Home » Public Forums » GMCnet » [GMCnet] Radiator Fan Woes
| [GMCnet] Radiator Fan Woes [message #269447] |
Mon, 12 January 2015 08:54  |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
|
Senior Member |
|
|
When I installed the Cad500, I designed and built a custom front mounting
bracket to use the Olds motor mount instead of using the conventional 68-72
Cad bracket and motor mount. That may have raised the engine as much as
1/2", causing the fan to no longer be centered in its shroud.
Consequently, I've had trouble with the fan hitting the shroud at the top
when I "get on it". To alleviate some of the problem, I adjusted the
shroud up so far that it actually touches the aluminum frame of the engine
hatch.
Still, I had to feather the throttle to prevent fan racket. Finally, I
figured out that one of the transmission mounts must be bad, allowing the
engine to rotate too much. Raising the hatch and accelerating in gear with
the brakes locked almost proved that theory -- except that the front mount
was the weak one.
After debating whether to cast a new mount from urethane, I decided against
trying to learn a new skill at my advanced age. JimK sent me one of his
large inventory of new mounts. Even installing that proved a bit of a
challenge: The new mount had threaded sockets for the bolt up through the
crossmember. But the one that was installed had studs protruding down thru
the crossmember. With the tight vertical clearance above my center-mounted
A/C compressor, the mount would not come out. Figuring the studs were
threaded into the old mount, I tried securing the nuts on them with red
Locktite. Even after setting overnight, the nuts came off easily. Then I
tried JBWeld. Again, the nuts came off. I finally used my reciprocating
saw to cut between the crossmember and the loosened mount; that worked, at
the cost of damaging the powder coating on the crossmember. The new mount
then went in easily.
With the new mount in place, I can "get on it" with only the screeching and
smoke from the tires -- no more fan interference.
With that problem "solved", I decided it was time to order John Biwersi's
new fan and did so about 10 days ago. He shipped me the last one he had in
stock and it arrived last Tuesday. On Thursday, I tried to install it and
discovered a problem: It hit the fan shroud. It turns out that the fan
I've been running is about 1/2" smaller in OD than the 19" of John's new
fan and I don't have that much clearance at the top -- due to the way I
mounted the Cad500.
Besides the new one, I have 3 fans to fit this engine. The smallest is
about 1" smaller than the new one, another about 1/2" smaller, and the
other about 1/4" smaller. I've always run the 1/2" smaller. After the new
one didn't fit, I installed the smallest, which is a "flex fan", though I
believe it came from the factory on a GM engine. I'd never tried it
before, because of the flex feature which I don't generally endorse.
A short test drive proved that the fan clears and seems to be quieter than
the one I was running. I'm going to run it for a while, including next
week's trip to Florida, before deciding what to do next. My options
include using the 68-72 Cad front bracket (probably modified to use my new
Olds mount), continuing with the flex fan, or ordering a custom, smaller
diameter, fan from John. He's checked with the manufacturer and that is an
option. At the moment, that seems to me the best option because I'm very
favorably impressed with the design and construction of the new fan. But
if I can lower the engine 1/2" or so, I can get the benefit of the full 19"
diameter fan. Decisions, decisions -- I'm getting too old for all these
decisions!
In the meantime, I'll be offering the new Biwersi Fan for sale at Lazy Days
next week, or Patterson in March (unless I figure out by then how to use
it). Not because I don't like it, but because I've got too many spares
laying around already. :-)
Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL,
Manny Brakes & 1-Ton, etc., etc.
www.gmcwipersetc.com
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
|
|
|
|
| Re: [GMCnet] Radiator Fan Woes [message #269451 is a reply to message #269447] |
Mon, 12 January 2015 09:33  |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
|
Senior Member |
|
|
Or you can modify your upper fan shroud. I can make you an aluminum piece that would replace the upper lip portion that is hitting the fan.
OR, you MIGHT be able to reshape the shroud with a heat gun. Make a wooden form with the correct radius and about 2" wide, remove the lower shroud and fan, put a jack under the wooden form and exert a little pressure on the outer lip of the top shroud (the area where the fan hits), then apply the heat gun. I'm not sure how the particular plastic of the shroud reacts to heat but a lot of similar feeling plastic would get soft, move, and then get hard in the new position as it cooled.
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
|
|
|
|
| Re: [GMCnet] Radiator Fan Woes [message #269455 is a reply to message #269451] |
Mon, 12 January 2015 10:32 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
|
Senior Member |
|
|
On Monday, January 12, 2015, Kerry Pinkerton wrote:
Or put back a 455 or A deisel
Or you can modify your upper fan shroud. I can make you an aluminum piece
> that would replace the upper lip portion that is hitting the fan.
>
> OR, you MIGHT be able to reshape the shroud with a heat gun. Make a
> wooden form with the correct radius and about 2" wide, remove the lower
> shroud
> and fan, put a jack under the wooden form and exert a little pressure on
> the outer lip of the top shroud (the area where the fan hits), then apply
> the
> heat gun. I'm not sure how the particular plastic of the shroud reacts to
> heat but a lot of similar feeling plastic would get soft, move, and then
> get hard in the new position as it cooled.
>
> --
> Kerry Pinkerton
>
> North Alabama, near Huntsville,
>
> 77 Eleganza II, "The Lady", 403CI, Manny Brakes, 1 ton, tranny also a 76
> Eleganza to be re-bodied as an Art Deco car hauler
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
|
|
| Re: [GMCnet] Radiator Fan Woes [message #269470 is a reply to message #269451] |
Mon, 12 January 2015 12:04 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
|
Senior Member |
|
|
The fan shroud is a Frank Jenkins fiberglass one. The only possibly
beneficial modification would be to cut away the very top of the shroud,
where it's now hitting the aluminum frame of the engine hatch. Doing that
would gain no more than 3/8", probably 1/4" or less.
One other option I do have is that the shroud rises just forward of where
the fan now rides. I have a 2-1/2" fan spacer which I could install. That
would move the fan into an area with plenty of tip clearance, yet still 2+"
from the radiator. It would also completely negate the "wing-tip vortices"
attenuation that shroud is intended to provide -- the fan would be buried
2" inside the shroud. There'd also arise the possibility of instability
because of the long moment arm on the WP shaft. Any imbalance, whether
from weight or adverse loading (remember that the fan's no longer centered
in the shroud), would have a lot of effect on the WP bearings.
I appreciate your offer of sheet metal work -- that may become a possibilty
-- maybe a more shallow shroud with the annular ring moved forward to match
the extended fan? Lots of possibilities. :-)
Ken H.
On Mon, Jan 12, 2015 at 10:33 AM, Kerry Pinkerton
wrote:
> Or you can modify your upper fan shroud. I can make you an aluminum piece
> that would replace the upper lip portion that is hitting the fan.
>
> OR, you MIGHT be able to reshape the shroud with a heat gun. Make a
> wooden form with the correct radius and about 2" wide, remove the lower
> shroud
> and fan, put a jack under the wooden form and exert a little pressure on
> the outer lip of the top shroud (the area where the fan hits), then apply
> the
> heat gun. I'm not sure how the particular plastic of the shroud reacts to
> heat but a lot of similar feeling plastic would get soft, move, and then
> get hard in the new position as it cooled.
>
> --
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
|
|
|
|
|
|
| Re: [GMCnet] Radiator Fan Woes [message #269487 is a reply to message #269471] |
Mon, 12 January 2015 13:25 |
Bullitthead
Messages: 1411
Registered: November 2013
Karma: 5
|
Senior Member |
|
|
Maybe you could raise the body with some newer,thicker pads to gain a little more clearance for your shroud and A/C compressor. The consensus seems to indicate that it's easy to replace the body pads, but I have not done mine yet and I don't look forward to doing the rear ones. The front two look easy, but I don't need to replace those...but it might help your situation.
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
|
|
|
|
| Re: [GMCnet] Radiator Fan Woes [message #269496 is a reply to message #269470] |
Mon, 12 January 2015 14:36 |
Kosier
Messages: 834
Registered: February 2008
Karma: 1
|
Senior Member |
|
|
Darn, it would've been so easy to have used the stock Cadillac mount.
Drill two new holes in the front crossmember and bolt it up. But now,
drilling those two holes will be tough with the motor in the way.
By the way, I tried to figure a way to use the Olds mount with the
Cadillac brackets. I don't think that will work out.
Trying to compensate for one little problem seems to have a domino
effect. It might be best to go back and figure out how to correct the
original problem. Would it be possible to rework your original bracket
to gain the necessary reduction in motor height? Or, as another idea,
could you utilize an angle head drill to put in the holes for the Cad
mounts? There is no easy solution. I've got mounts, if that helps.
Gary Kosier
77 PB w/500 Cad
Newark, Oh
-----Original Message-----
From: Ken Henderson
Sent: Monday, January 12, 2015 1:04 PM
To: gmclist
Subject: Re: [GMCnet] Radiator Fan Woes
The fan shroud is a Frank Jenkins fiberglass one. The only possibly
beneficial modification would be to cut away the very top of the shroud,
where it's now hitting the aluminum frame of the engine hatch. Doing that
would gain no more than 3/8", probably 1/4" or less.
One other option I do have is that the shroud rises just forward of where
the fan now rides. I have a 2-1/2" fan spacer which I could install. That
would move the fan into an area with plenty of tip clearance, yet still 2+"
from the radiator. It would also completely negate the "wing-tip vortices"
attenuation that shroud is intended to provide -- the fan would be buried
2" inside the shroud. There'd also arise the possibility of instability
because of the long moment arm on the WP shaft. Any imbalance, whether
from weight or adverse loading (remember that the fan's no longer centered
in the shroud), would have a lot of effect on the WP bearings.
I appreciate your offer of sheet metal work -- that may become a possibilty
-- maybe a more shallow shroud with the annular ring moved forward to match
the extended fan? Lots of possibilities. :-)
Ken H.
On Mon, Jan 12, 2015 at 10:33 AM, Kerry Pinkerton
wrote:
> Or you can modify your upper fan shroud. I can make you an aluminum piece
> that would replace the upper lip portion that is hitting the fan.
>
> OR, you MIGHT be able to reshape the shroud with a heat gun. Make a
> wooden form with the correct radius and about 2" wide, remove the lower
> shroud
> and fan, put a jack under the wooden form and exert a little pressure on
> the outer lip of the top shroud (the area where the fan hits), then apply
> the
> heat gun. I'm not sure how the particular plastic of the shroud reacts to
> heat but a lot of similar feeling plastic would get soft, move, and then
> get hard in the new position as it cooled.
>
> --
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
|
|
| Re: [GMCnet] Radiator Fan Woes [message #269517 is a reply to message #269496] |
Mon, 12 January 2015 18:23 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
|
Senior Member |
|
|
Gary,
No one should get too focused on my custom front bracket. When I made it I
was very conscious of the necessity to keep the engine down, so if it's ANY
higher than the 68-72, it's not much. I have a 68-72, so if I can find an
accurate way to compare it to my drawings and jig, I may be able to put
that to rest -- for myself. If the clearance wasn't so tight, it wouldn't
be an issue at all.
If the fan I've got on there now keeps the engine cool when July rolls
around, I may not do anything! :-)
Ken H.
On Mon, Jan 12, 2015 at 3:36 PM, Kosier wrote:
> Darn, it would've been so easy to have used the stock Cadillac mount.
> Drill two new holes in the front crossmember and bolt it up. But now,
> drilling those two holes will be tough with the motor in the way.
> By the way, I tried to figure a way to use the Olds mount with the
> Cadillac brackets. I don't think that will work out.
> Trying to compensate for one little problem seems to have a domino
> effect. It might be best to go back and figure out how to correct the
> original problem. Would it be possible to rework your original bracket
> to gain the necessary reduction in motor height? Or, as another idea,
> could you utilize an angle head drill to put in the holes for the Cad
> mounts? There is no easy solution. I've got mounts, if that helps.
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
|
|
|
|
| Re: [GMCnet] Radiator Fan Woes [message #269518 is a reply to message #269498] |
Mon, 12 January 2015 18:36 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
|
Senior Member |
|
|
Hal,
No, my two-serpentine belt setup does not require a reverse-flow fan. That
was one of the reasons I chose that version.
You definitely need to check the clearance before ordering a custom fan.
Ken H.
On Mon, Jan 12, 2015 at 4:48 PM, Hal Kading wrote:
> Ken,
>
> Don't you need a reverse rotation fan with your serpentine belt? Jim K is
> looking into getting me one for the 502. Guess I'd better measure the
> diameter of mine before ordering.
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
|
|
|
|
| Re: [GMCnet] Radiator Fan Woes [message #269521 is a reply to message #269487] |
Mon, 12 January 2015 18:41 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
|
Senior Member |
|
|
Terry,
Thanks for reminding me of pads. While I've had thicker frame pads for
several years, I haven't checked their current state. Nor did I ever
install thicker donuts, which is where I might be able to help the
clearance situation. I wish now I'd chosen a different reference for this
measurement:
http://www.gmcmhphotos.com/photos/front-body-isolators/p17560.html
Since then I've replaced the HVAC completely, so I can no longer measure
the distance from the radiator to the HVAC. :-( Not that it too much
matters -- just need to increase it, not worry much about what it WAS. :-)
Ken H.
On Mon, Jan 12, 2015 at 2:25 PM, Terry wrote:
> Maybe you could raise the body with some newer,thicker pads to gain a
> little more clearance for your shroud and A/C compressor. The consensus
> seems to
>
> indicate that it's easy to replace the body pads, but I have not done mine
> yet and I don't look forward to doing the rear ones. The front two look
>
> easy, but I don't need to replace those...but it might help your situation.
> --
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
|
|
|
|
| Re: [GMCnet] Radiator Fan Woes [message #269529 is a reply to message #269517] |
Mon, 12 January 2015 18:26 |
Dolph Santorine
Messages: 1236
Registered: April 2011
Location: Wheeling, WV
Karma: -41
|
Senior Member |
|
|
This just “sorta” related, but the position of the engine in the bay seems to me to be a bit tilted to the side.
Is it an illusion, or is that correct?
Everything lines up for me, I’m just curious if anyone else noticed this.
All the parts line up, so I’m not concerned.
Dolph Santorine
dolph@dolphsantorine.com
134 Falls Road
Wheeling, WV 26003
Phone: 304-219-3100
FAX: 304-232-3075
> On Jan 12, 2015, at 7:23 PM, Ken Henderson wrote:
>
> Gary,
>
> No one should get too focused on my custom front bracket. When I made it I
> was very conscious of the necessity to keep the engine down, so if it's ANY
> higher than the 68-72, it's not much. I have a 68-72, so if I can find an
> accurate way to compare it to my drawings and jig, I may be able to put
> that to rest -- for myself. If the clearance wasn't so tight, it wouldn't
> be an issue at all.
>
> If the fan I've got on there now keeps the engine cool when July rolls
> around, I may not do anything! :-)
>
> Ken H.
>
>
> On Mon, Jan 12, 2015 at 3:36 PM, Kosier wrote:
>
>> Darn, it would've been so easy to have used the stock Cadillac mount.
>> Drill two new holes in the front crossmember and bolt it up. But now,
>> drilling those two holes will be tough with the motor in the way.
>> By the way, I tried to figure a way to use the Olds mount with the
>> Cadillac brackets. I don't think that will work out.
>> Trying to compensate for one little problem seems to have a domino
>> effect. It might be best to go back and figure out how to correct the
>> original problem. Would it be possible to rework your original bracket
>> to gain the necessary reduction in motor height? Or, as another idea,
>> could you utilize an angle head drill to put in the holes for the Cad
>> mounts? There is no easy solution. I've got mounts, if that helps.
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
| Re: [GMCnet] Radiator Fan Woes [message #269530 is a reply to message #269517] |
Mon, 12 January 2015 20:25 |
Kosier
Messages: 834
Registered: February 2008
Karma: 1
|
Senior Member |
|
|
Ken,
I have a '72 motor sitting on it's original mount on a little dolly. I can
take any measurement you need. Let me know what you need.
Gary Kosier
77 PB w/500 Cad.
Newark, Oh
-----Original Message-----
From: Ken Henderson
Sent: Monday, January 12, 2015 7:23 PM
To: gmclist
Subject: Re: [GMCnet] Radiator Fan Woes
Gary,
No one should get too focused on my custom front bracket. When I made it I
was very conscious of the necessity to keep the engine down, so if it's ANY
higher than the 68-72, it's not much. I have a 68-72, so if I can find an
accurate way to compare it to my drawings and jig, I may be able to put
that to rest -- for myself. If the clearance wasn't so tight, it wouldn't
be an issue at all.
If the fan I've got on there now keeps the engine cool when July rolls
around, I may not do anything! :-)
Ken H.
On Mon, Jan 12, 2015 at 3:36 PM, Kosier wrote:
> Darn, it would've been so easy to have used the stock Cadillac mount.
> Drill two new holes in the front crossmember and bolt it up. But now,
> drilling those two holes will be tough with the motor in the way.
> By the way, I tried to figure a way to use the Olds mount with the
> Cadillac brackets. I don't think that will work out.
> Trying to compensate for one little problem seems to have a domino
> effect. It might be best to go back and figure out how to correct the
> original problem. Would it be possible to rework your original bracket
> to gain the necessary reduction in motor height? Or, as another idea,
> could you utilize an angle head drill to put in the holes for the Cad
> mounts? There is no easy solution. I've got mounts, if that helps.
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
| Re: [GMCnet] Radiator Fan Woes [message #269539 is a reply to message #269530] |
Mon, 12 January 2015 21:48 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
|
Senior Member |
|
|
Gary,
It would be great -- save me a trip to the farm to mount the bracket on a
spare Cad -- if you'd check just one dimension: That from the horizontal
centerline of the two lower block mounting bolts (shown as 12-3/16" apart
in the photo below), to the bottom of the bracket (the surface where the
mount is bolted). If that dimension is more than 5-1/2" (the 5-1/4" shown
plus the 1/4" plate to which my Olds mount is bolted), then my engine's
that much higher than the Cad bracket would position it.
http://www.gmcmhphotos.com/photos/cad-500/p32484-020-cad-front-mount-jig-for-welding.html
Thanks a bunch.
Ken
On Mon, Jan 12, 2015 at 9:25 PM, Kosier wrote:
> Ken,
>
> I have a '72 motor sitting on it's original mount on a little dolly. I can
> take any measurement you need. Let me know what you need.
>
> Gary Kosier
> 77 PB w/500 Cad.
> Newark, Oh
>
> -----Original Message----- From: Ken Henderson Sent: Monday, January 12,
> 2015 7:23 PM To: gmclist Subject: Re: [GMCnet] Radiator Fan Woes
> Gary,
>
> No one should get too focused on my custom front bracket. When I made it I
> was very conscious of the necessity to keep the engine down, so if it's ANY
> higher than the 68-72, it's not much. I have a 68-72, so if I can find an
> accurate way to compare it to my drawings and jig, I may be able to put
> that to rest -- for myself. If the clearance wasn't so tight, it wouldn't
> be an issue at all.
>
> If the fan I've got on there now keeps the engine cool when July rolls
> around, I may not do anything! :-)
>
> Ken H.
>
>
> On Mon, Jan 12, 2015 at 3:36 PM, Kosier wrote:
>
> Darn, it would've been so easy to have used the stock Cadillac mount.
>> Drill two new holes in the front crossmember and bolt it up. But now,
>> drilling those two holes will be tough with the motor in the way.
>> By the way, I tried to figure a way to use the Olds mount with the
>> Cadillac brackets. I don't think that will work out.
>> Trying to compensate for one little problem seems to have a domino
>> effect. It might be best to go back and figure out how to correct the
>> original problem. Would it be possible to rework your original bracket
>> to gain the necessary reduction in motor height? Or, as another idea,
>> could you utilize an angle head drill to put in the holes for the Cad
>> mounts? There is no easy solution. I've got mounts, if that helps.
>>
>> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
|
|
|
|
| Re: [GMCnet] Radiator Fan Woes [message #269541 is a reply to message #269539] |
Mon, 12 January 2015 22:47 |
Kosier
Messages: 834
Registered: February 2008
Karma: 1
|
Senior Member |
|
|
Ken,
I trust you do understand that there is eight minutes left in the national
championship football game and my team is ahead. In the morning.
Gary K
-----Original Message-----
From: Ken Henderson
Sent: Monday, January 12, 2015 10:48 PM
To: gmclist
Subject: Re: [GMCnet] Radiator Fan Woes
Gary,
It would be great -- save me a trip to the farm to mount the bracket on a
spare Cad -- if you'd check just one dimension: That from the horizontal
centerline of the two lower block mounting bolts (shown as 12-3/16" apart
in the photo below), to the bottom of the bracket (the surface where the
mount is bolted). If that dimension is more than 5-1/2" (the 5-1/4" shown
plus the 1/4" plate to which my Olds mount is bolted), then my engine's
that much higher than the Cad bracket would position it.
http://www.gmcmhphotos.com/photos/cad-500/p32484-020-cad-front-mount-jig-for-welding.html
Thanks a bunch.
Ken
On Mon, Jan 12, 2015 at 9:25 PM, Kosier wrote:
> Ken,
>
> I have a '72 motor sitting on it's original mount on a little dolly. I
> can
> take any measurement you need. Let me know what you need.
>
> Gary Kosier
> 77 PB w/500 Cad.
> Newark, Oh
>
> -----Original Message----- From: Ken Henderson Sent: Monday, January 12,
> 2015 7:23 PM To: gmclist Subject: Re: [GMCnet] Radiator Fan Woes
> Gary,
>
> No one should get too focused on my custom front bracket. When I made it
> I
> was very conscious of the necessity to keep the engine down, so if it's
> ANY
> higher than the 68-72, it's not much. I have a 68-72, so if I can find an
> accurate way to compare it to my drawings and jig, I may be able to put
> that to rest -- for myself. If the clearance wasn't so tight, it wouldn't
> be an issue at all.
>
> If the fan I've got on there now keeps the engine cool when July rolls
> around, I may not do anything! :-)
>
> Ken H.
>
>
> On Mon, Jan 12, 2015 at 3:36 PM, Kosier wrote:
>
> Darn, it would've been so easy to have used the stock Cadillac mount.
>> Drill two new holes in the front crossmember and bolt it up. But now,
>> drilling those two holes will be tough with the motor in the way.
>> By the way, I tried to figure a way to use the Olds mount with the
>> Cadillac brackets. I don't think that will work out.
>> Trying to compensate for one little problem seems to have a domino
>> effect. It might be best to go back and figure out how to correct the
>> original problem. Would it be possible to rework your original bracket
>> to gain the necessary reduction in motor height? Or, as another idea,
>> could you utilize an angle head drill to put in the holes for the Cad
>> mounts? There is no easy solution. I've got mounts, if that helps.
>>
>> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
| Re: [GMCnet] Radiator Fan Woes [message #269543 is a reply to message #269541] |
Mon, 12 January 2015 22:50 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
|
Senior Member |
|
|
Sure! I wouldn't ask even you to go out in that cold weather for that --
nev er mind the silly bunch of jocks out running into each other! :-)
Ken H.
On Mon, Jan 12, 2015 at 11:47 PM, Kosier wrote:
> Ken,
>
> I trust you do understand that there is eight minutes left in the national
> championship football game and my team is ahead. In the morning.
>
> Gary K
>
> -----Original Message----- From: Ken Henderson
> Sent: Monday, January 12, 2015 10:48 PM
>
> To: gmclist
> Subject: Re: [GMCnet] Radiator Fan Woes
>
> Gary,
>
> It would be great -- save me a trip to the farm to mount the bracket on a
> spare Cad -- if you'd check just one dimension: That from the horizontal
> centerline of the two lower block mounting bolts (shown as 12-3/16" apart
> in the photo below), to the bottom of the bracket (the surface where the
> mount is bolted). If that dimension is more than 5-1/2" (the 5-1/4" shown
> plus the 1/4" plate to which my Olds mount is bolted), then my engine's
> that much higher than the Cad bracket would position it.
>
> http://www.gmcmhphotos.com/photos/cad-500/p32484-020-cad-
> front-mount-jig-for-welding.html
>
> Thanks a bunch.
>
> Ken
>
>
>
> On Mon, Jan 12, 2015 at 9:25 PM, Kosier wrote:
>
> Ken,
>>
>> I have a '72 motor sitting on it's original mount on a little dolly. I
>> can
>> take any measurement you need. Let me know what you need.
>>
>> Gary Kosier
>> 77 PB w/500 Cad.
>> Newark, Oh
>>
>> -----Original Message----- From: Ken Henderson Sent: Monday, January 12,
>> 2015 7:23 PM To: gmclist Subject: Re: [GMCnet] Radiator Fan Woes
>> Gary,
>>
>> No one should get too focused on my custom front bracket. When I made it
>> I
>> was very conscious of the necessity to keep the engine down, so if it's
>> ANY
>> higher than the 68-72, it's not much. I have a 68-72, so if I can find an
>> accurate way to compare it to my drawings and jig, I may be able to put
>> that to rest -- for myself. If the clearance wasn't so tight, it wouldn't
>> be an issue at all.
>>
>> If the fan I've got on there now keeps the engine cool when July rolls
>> around, I may not do anything! :-)
>>
>> Ken H.
>>
>>
>> On Mon, Jan 12, 2015 at 3:36 PM, Kosier wrote:
>>
>> Darn, it would've been so easy to have used the stock Cadillac mount.
>>
>>> Drill two new holes in the front crossmember and bolt it up. But now,
>>> drilling those two holes will be tough with the motor in the way.
>>> By the way, I tried to figure a way to use the Olds mount with the
>>> Cadillac brackets. I don't think that will work out.
>>> Trying to compensate for one little problem seems to have a domino
>>> effect. It might be best to go back and figure out how to correct the
>>> original problem. Would it be possible to rework your original bracket
>>> to gain the necessary reduction in motor height? Or, as another idea,
>>> could you utilize an angle head drill to put in the holes for the Cad
>>> mounts? There is no easy solution. I've got mounts, if that helps.
>>>
>>> _______________________________________________
>>>
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
>> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
|
|
|
|
|
|
| Re: [GMCnet] Radiator Fan Woes [message #269546 is a reply to message #269545] |
Mon, 12 January 2015 23:17 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
|
Senior Member |
|
|
Oh! Now I understand -- though, frankly, seems to me they've already made
their case.
Guess I'd better change the subject before I hurt some misguided soul's
feelings. :-(
Ken H.
On Mon, Jan 12, 2015 at 11:57 PM, Robert Mueller
wrote:
> Jeez Ken,
>
> That's important work for the jocks; they're gathering evidence to sue for
> concussions when they retire! ;-)
>
> Regards,
> Rob M.
>
> -----Original Message-----
> From: Ken Henderson
>
> Sure! I wouldn't ask even you to go out in that cold weather for that --
> nev er mind the silly bunch of jocks out running into each other! :-)
>
> Ken H.
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
|
|
|
|
| Re: [GMCnet] Radiator Fan Woes [message #269577 is a reply to message #269539] |
Tue, 13 January 2015 12:00 |
Kosier
Messages: 834
Registered: February 2008
Karma: 1
|
Senior Member |
|
|
Ken,
Things don't seem to add up here, so let me explain my procedure.
I picked up the front of the motor and removed the LH lower mount bolt.
I put a long 3/8" bolt in that hole,extending forward. Then I placed a
tri-square scale under the motor mount at an angle, so it was under
the bolt. Sat the motor down. measured from the top of the scale
to the center of the bolt. It measured 6 & 3/8". WTF! This would a
mean your motor is 1 & 1/8" low. This can't be right.
Looking for more info, I shifted the scale over to center and measured
up to the center of the crank. 6 & 1/4". Then I went over to my
meager supply of Oldsmobile parts and measured from the bottom
of the motor mount to the center of the crank. six inches. This
tells me the Cad crank is 1/4" higher than the Olds in front.
A neglibile amount. That's everything I know, now it's your turn.
Gary Kosier
-----Original Message-----
From: Ken Henderson
Sent: Monday, January 12, 2015 10:48 PM
To: gmclist
Subject: Re: [GMCnet] Radiator Fan Woes
Gary,
It would be great -- save me a trip to the farm to mount the bracket on a
spare Cad -- if you'd check just one dimension: That from the horizontal
centerline of the two lower block mounting bolts (shown as 12-3/16" apart
in the photo below), to the bottom of the bracket (the surface where the
mount is bolted). If that dimension is more than 5-1/2" (the 5-1/4" shown
plus the 1/4" plate to which my Olds mount is bolted), then my engine's
that much higher than the Cad bracket would position it.
http://www.gmcmhphotos.com/photos/cad-500/p32484-020-cad-front-mount-jig-for-welding.html
Thanks a bunch.
Ken
On Mon, Jan 12, 2015 at 9:25 PM, Kosier wrote:
> Ken,
>
> I have a '72 motor sitting on it's original mount on a little dolly. I
> can
> take any measurement you need. Let me know what you need.
>
> Gary Kosier
> 77 PB w/500 Cad.
> Newark, Oh
>
> -----Original Message----- From: Ken Henderson Sent: Monday, January 12,
> 2015 7:23 PM To: gmclist Subject: Re: [GMCnet] Radiator Fan Woes
> Gary,
>
> No one should get too focused on my custom front bracket. When I made it
> I
> was very conscious of the necessity to keep the engine down, so if it's
> ANY
> higher than the 68-72, it's not much. I have a 68-72, so if I can find an
> accurate way to compare it to my drawings and jig, I may be able to put
> that to rest -- for myself. If the clearance wasn't so tight, it wouldn't
> be an issue at all.
>
> If the fan I've got on there now keeps the engine cool when July rolls
> around, I may not do anything! :-)
>
> Ken H.
>
>
> On Mon, Jan 12, 2015 at 3:36 PM, Kosier wrote:
>
> Darn, it would've been so easy to have used the stock Cadillac mount.
>> Drill two new holes in the front crossmember and bolt it up. But now,
>> drilling those two holes will be tough with the motor in the way.
>> By the way, I tried to figure a way to use the Olds mount with the
>> Cadillac brackets. I don't think that will work out.
>> Trying to compensate for one little problem seems to have a domino
>> effect. It might be best to go back and figure out how to correct the
>> original problem. Would it be possible to rework your original bracket
>> to gain the necessary reduction in motor height? Or, as another idea,
>> could you utilize an angle head drill to put in the holes for the Cad
>> mounts? There is no easy solution. I've got mounts, if that helps.
>>
>> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
|
|
|
|
Goto Forum:
Current Time: Sat Sep 28 12:30:46 CDT 2024
Total time taken to generate the page: 0.00846 seconds
|
GMCforum
Search
Help
Register
Login
Home
