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New One Ton Frontend [message #115739] Sat, 19 February 2011 18:00 Go to next message
WD0AFQ is currently offline  WD0AFQ   United States
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Location: Dexter, Mo.
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Maybe in all of our troubles I have neglected to say much about the new frontend we had Jim K. install. It is great and I would do it again and again if I were to have two other coaches, which I won't. I read Jim Bounds' pose weekly and see what he says about the original stuff under our frontends. He is pretty much right on. We had 30k on our bearings, with grease fittings. It was time for something. So, I got to thinking how much this "something" might cost, since I can't or won't do it myself. I like doing my own work but these things are just too much, and I owned a bearing tool. I wanted to be able to handle the frontend myself so that figured into the equasion. I hated carrying those 300 dollar Lenzi Timkens around tying up my money. That's a good bit of fuel. We also had a set of Steve Ferguson's rebuilt lower control arms that got traded to Jim.
Bottom line, I can stop anywhere now and either get a bad bearing replaced or do it myself after leaving a parts store with the hub and bearing for way under 200 bux. My main helper and I should now be able to forget about a front bearing going bad and now be concerned more about our engines dying out in the middle of nowhere. We would like to use this coach for as long as we can. One of these days some of us "younger guys" might outlive the parts availability for these old frontends. And, I already know Timken is not what Timken used to be. And, many of our group can perform this mod on their own. I watched it being done. With the right tools you can do it yourself. There are members here that have installed the kit or built their own setup. Lots of valuable knowlege is free from those guys and from the owner of the kits, Jimmy K. So, if you are 88 years old, forget it. If you are 60, think about it.
Have I said we have brakes?
dan


3 In Stainless Exhaust Headers One Ton All Discs/Reaction Arm 355 FD/Quad Bag/Alum Radiator Manny Tran/New eng. Holley EFI/10 Tire Air Monitoring System Solarized Coach/Upgraded Windows Satelite TV/On Demand Hot Water/3Way Refer
Re: New One Ton Frontend [message #115750 is a reply to message #115739] Sat, 19 February 2011 19:09 Go to previous messageGo to next message
RF_Burns is currently offline  RF_Burns   Canada
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Dan,
Great to hear the front end is everything you hoped.

I've emailed JimK about the Hubler and also changing to disks on the rear. I can't go the whole way to the reaction arm this year, but I was hoping to get the disks too... but I just got told to send the Feds another 12K for NEXT years taxes, let alone the accountant hasn't told me how much more for this past year!!

Now I'm worried about my new engine based on your experience. Mine was a new rad 600 miles before the bearings went out and they flushed it when the rebuilt engine was installed, but was it enough... or am I just worrying too much.





Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
Re: New One Ton Frontend [message #115751 is a reply to message #115750] Sat, 19 February 2011 19:18 Go to previous messageGo to next message
WD0AFQ is currently offline  WD0AFQ   United States
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Bruce, you and I have chatted about the frontend. You are going to like it and the rear discs.
Now, I can not answer your question about the radiator cooler. I guess if I was worried then I would unhook it and put on an external cooler. I have an aluminum radiator. I really hate not using the internal cooler but will not take a chance after what we have been through. I have no way to know if a dirty cooler caused our problem but I do know it could cause another engine to fail now. There is a place here in Tucson that will clean our's but I am not taking any chances. Maybe someday I can afford a new aluminum radiator and put things back.
Dan


3 In Stainless Exhaust Headers One Ton All Discs/Reaction Arm 355 FD/Quad Bag/Alum Radiator Manny Tran/New eng. Holley EFI/10 Tire Air Monitoring System Solarized Coach/Upgraded Windows Satelite TV/On Demand Hot Water/3Way Refer
Re: New One Ton Frontend [message #115753 is a reply to message #115751] Sat, 19 February 2011 19:33 Go to previous messageGo to next message
armandminnie is currently offline  armandminnie   United States
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Dan,
I think that if you got that cooler cleaned out with the right kind of machine there would be no problem. I know I have told you this before but for the benefit of others - when my engine went out in Jackson Hole I was towed to Rexburg, Idaho where a Chevy dealer's truck shop replaced the engine. On Jim K's advice I asked about cleaning the oil cooler and was told that oil coolers were real common on trucks and they have a machine that is specifically for cleaning them out. I have about 30k miles on that engine and - knock on wood - so far so good.


Armand Minnie
Marana, AZ
'76 Eleganza II TZE166V103202
visit my gmc blog
click here to visit gmcws.org
Re: [GMCnet] New One Ton Frontend [message #115755 is a reply to message #115753] Sat, 19 February 2011 20:04 Go to previous messageGo to next message
jimk is currently offline  jimk   United States
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Armand,
I'll need to run over to some truck shops and see whatthey have,
I know we send ours to Southern CA and they do it for us with the
aircraft coolers.

On Sat, Feb 19, 2011 at 5:33 PM, Armand Minnie <armand@minniebiz.com> wrote:
>
>
> Dan,
> I think that if you got that cooler cleaned out with the right kind of machine there would be no problem.  I know I have told you this before but for the benefit of others - when my engine went out in Jackson Hole I was towed to Rexburg, Idaho where a Chevy dealer's truck shop replaced the engine.  On Jim K's advice I asked about cleaning the oil cooler and was told that oil coolers were real common on trucks and they have a machine that is specifically for cleaning them out.  I have about 30k miles on that engine and - knock on wood - so far so good.
> --
> Armand Minnie
> Marana, AZ
> '76 Eleganza II
> TZE166V103202
> http://www.minniebiz.com
> _______________________________________________
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Re: New One Ton Frontend [message #115756 is a reply to message #115750] Sat, 19 February 2011 20:44 Go to previous messageGo to next message
roy1 is currently offline  roy1   United States
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Bruce if it would ease your mind when you replace your old oil filter put it in a vice and cut the can open with a sharp knife or wood chisel look close at the paper filter. If there are shiny copper colored metal flakes on I would say you are passing old bearing debree if not you should be ok.
Roy


Roy Keen Minden,NV 76 X Glenbrook
Re: [GMCnet] New One Ton Frontend [message #115757 is a reply to message #115750] Sat, 19 February 2011 20:42 Go to previous messageGo to next message
Ken Henderson is currently offline  Ken Henderson   United States
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Registered: March 2004
Location: Americus, GA
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The day after I bought the GMC on 30 April 98, the engine self-destructed
after 875 of the 950 miles home from Kerville, TX.

I did flush the oil cooler, but not with any great care, and the engine I
personally rebuild and installed has logged about 80,000 miles since then
with no problems. So, I'll admit to being a little skeptical about the
emphasis on cooler cleaning.

But, I've been thinking about it more: The bottom end of the engine wasn't
affected. The perfect crank I took out of it was about the only part I kept
-- I gave the rest to an old guy with a truck load of junk who was willing
to wait for the salvage yard to open -- I wasn't.

I suppose, as far as the cooler was concerned, I got lucky; the #4 piston,
busted all to pieces by the swallowed intake valve, didn't scatter fine
particles like a slowly disintegrating bearing shell.

When the bearing went after <50 miles in the "new" front clip I installed, I
again cleaned the cooler, with considerably more care than before. When the
re-rebuilt engine began to worry me with a "knock-like" noise, I was looking
for an excuse to install the Cad500, so I did. I haven't yet torn the 455
down; in fact, it moved into the shop yesterday. Now I'm getting curious so
I'll probably tear it down pretty soon. And maybe hope that it cleaned out
the cooler over the 15,000 miles it ran, without getting a chance to mess it
up again for the 500 which only has 4-5,000 on it now.

No real contribution -- just thinking out loud. :-)

Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI+ & EBL
www.gmcwipersetc.com



On Sat, Feb 19, 2011 at 8:09 PM, Bruce Hislop wrote:

> ...Now I'm worried about my new engine based on your experience. Mine was
> a new rad 600 miles before the bearings went out and they flushed it when
> the rebuilt engine was installed, but was it enough... or am I just worrying
> too much.
>
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
Re: New One Ton Frontend [message #115760 is a reply to message #115751] Sat, 19 February 2011 20:58 Go to previous messageGo to next message
roy1 is currently offline  roy1   United States
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Registered: July 2004
Location: Minden nevada
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Dan if you have a decent sized cooler I wouldn't worry about using the radiator type. I found the one in the Aluminum radiator wasn't enough for my coach (probibly because it is located near the upper part of the radiator). I added another air over cooler in series with it to lower the engine oil temperature. As I mentioned earlier my front timing cover seal got hard from hot oil so I found a better seal and added the 2nd cooler to get the oil where I wanted it. This was only a problem in the mountins in summer towing.
Roy


Roy Keen Minden,NV 76 X Glenbrook
Re: [GMCnet] New One Ton Frontend [message #115777 is a reply to message #115757] Sun, 20 February 2011 01:52 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
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Registered: January 2004
Location: Hebron, Indiana
Karma: 10
Senior Member
Ken Henderson wrote on Sat, 19 February 2011 20:42

The day after I bought the GMC on 30 April 98, the engine self-destructed
after 875 of the 950 miles home from Kerville, TX.

I did flush the oil cooler, but not with any great care, and the engine I
personally rebuild and installed has logged about 80,000 miles since then
with no problems. So, I'll admit to being a little skeptical about the
emphasis on cooler cleaning.

But, I've been thinking about it more: The bottom end of the engine wasn't
affected. The perfect crank I took out of it was about the only part I kept
-- I gave the rest to an old guy with a truck load of junk who was willing
to wait for the salvage yard to open -- I wasn't.

I suppose, as far as the cooler was concerned, I got lucky; the #4 piston,
busted all to pieces by the swallowed intake valve, didn't scatter fine
particles like a slowly disintegrating bearing shell.

When the bearing went after <50 miles in the "new" front clip I installed, I
again cleaned the cooler, with considerably more care than before. When the
re-rebuilt engine began to worry me with a "knock-like" noise, I was looking
for an excuse to install the Cad500, so I did. I haven't yet torn the 455
down; in fact, it moved into the shop yesterday. Now I'm getting curious so
I'll probably tear it down pretty soon. And maybe hope that it cleaned out
the cooler over the 15,000 miles it ran, without getting a chance to mess it
up again for the 500 which only has 4-5,000 on it now.

No real contribution -- just thinking out loud. Smile

Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI+ & EBL
www.gmcwipersetc.com



On Sat, Feb 19, 2011 at 8:09 PM, Bruce Hislop wrote:

> ...Now I'm worried about my new engine based on your experience. Mine was
> a new rad 600 miles before the bearings went out and they flushed it when
> the rebuilt engine was installed, but was it enough... or am I just worrying
> too much.





I am also having a problem with all of these oil cooler worries.

As was stated before, the oil is filtered AFTER it leaves the cooler so what is the problem?

Also what about the oil cooler lines? Are you going to replace the lines or use them or reuse them?

Someone mentioned that oil can get bypassed when it is cold. That same bypassed oil also bypasses the cooler. So bypassing has would have no effect if stuff were trapped in the cooler.

This engine went 7000 miles before failure and had no indication of oil pressure problems. This sure does not sound line crap circulating around in the oil from the previous engine problem to me.

Why is everyone suspecting the cooler when the engine has not even been taken apart to see what the problem is? I can think of a lot of other things that could have failed including a sloppy engine rebuild. Blaming the cooler would be very low on the list.

It would not take much to build a flushing machine out of a pump a few fittings and a high quality filter. Hook it up and let it run in a recirculation mode for a couple of hours. Then hook it up reversed and run it again for another few hours.



Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
Re: [GMCnet] New One Ton Frontend [message #115793 is a reply to message #115777] Sun, 20 February 2011 08:14 Go to previous messageGo to next message
Ken Henderson is currently offline  Ken Henderson   United States
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Registered: March 2004
Location: Americus, GA
Karma: 9
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I don't necessarily disagree with any of the theories, but the whole thing's
got my cat brain working. Rob's curiosity is also aroused since he too has
never personally seen the inside of our oil coolers. So he's given me
permission to disassemble the radiator he left here last summer.

During the Pre-FMCA rally, when I hope to have a photographer on hand, we'll
pull and cut open at least the engine oil cooler and show everyone it's
innards. It won't settle the arguments any better than my recommending
brand X tires would, but at least I'll quell my curiosity.

Stay tuned.

Oh yeah: How do I get the tank off? It won't screw off -- will my propane
torch be enough to de-solder the tank seam? Don't really want to take the
"GMC Tool" or a cutting wheel to it.

Ken H.

On Sun, Feb 20, 2011 at 2:52 AM, Ken Burton wrote:

>
> I am also having a problem with all of these oil cooler worries.
> ...
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
Re: [GMCnet] New One Ton Frontend [message #115797 is a reply to message #115793] Sun, 20 February 2011 08:38 Go to previous messageGo to next message
fred v is currently offline  fred v   United States
Messages: 999
Registered: April 2006
Location: pensacola, fl.
Karma: 0
Senior Member
Ken Henderson wrote on Sun, 20 February 2011 08:14

I don't necessarily disagree with any of the theories, but the whole thing's
got my cat brain working. Rob's curiosity is also aroused since he too has
never personally seen the inside of our oil coolers. So he's given me
permission to disassemble the radiator he left here last summer.

During the Pre-FMCA rally, when I hope to have a photographer on hand, we'll
pull and cut open at least the engine oil cooler and show everyone it's
innards. It won't settle the arguments any better than my recommending
brand X tires would, but at least I'll quell my curiosity.

Stay tuned.

Oh yeah: How do I get the tank off? It won't screw off -- will my propane
torch be enough to de-solder the tank seam? Don't really want to take the
"GMC Tool" or a cutting wheel to it.

Ken H.

On Sun, Feb 20, 2011 at 2:52 AM, Ken Burton wrote:

>
> I am also having a problem with all of these oil cooler worries.
> ...
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i think i've seen a pic of that cooler in the photo site already.

propane torch should work to take the tank off. thin brass and soft solder. hold the seam vertical so the solder runs off.


Fred V
'77 Royale RB 455
P'cola, Fl
Re: [GMCnet] New One Ton Frontend [message #115802 is a reply to message #115797] Sun, 20 February 2011 09:04 Go to previous messageGo to next message
Ken Henderson is currently offline  Ken Henderson   United States
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Location: Americus, GA
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Fred,

If someone can find those photos, which I don't remember having seen, maybe
we can abort the planned exercise.

Thanks for "vertical"; I'd probably have forgotten to do that.

Ken H.

On Sun, Feb 20, 2011 at 9:38 AM, fred veenschoten <fredntoni@cox.net> wrote:

>
> i think i've seen a pic of that cooler in the photo site already.
>
> propane torch should work to take the tank off. thin brass and soft solder.
> hold the seam vertical so the solder runs off.
>
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
Re: [GMCnet] New One Ton Frontend [message #115810 is a reply to message #115797] Sun, 20 February 2011 10:10 Go to previous messageGo to next message
James Hupy is currently offline  James Hupy   United States
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Registered: May 2010
Karma: -62
Senior Member
Fred, what I have done to remove soldered tanks, etc is to heat with a mapp
gas type propane torch or a very small oxy/ace torch tip. When the solder
looks wet and fluid, take an air hose nozzle and blow it off. Don't do this
near anything that you would not like solder splatters on. I would use a
driveway or dirt patch free of combustible materials. Follow up with a
stainless steel wire brush, and you will have a non contaminated solder
seam. Another heating method would be a large soldering copper heated with a
blow torch. ( Yes, I still have a couple of them around, left over from my
pre bondo days.)
Jim Hupy
Salem, Or
78 GMC Royale 403
On Sun, Feb 20, 2011 at 6:38 AM, fred veenschoten <fredntoni@cox.net> wrote:

>
>
> Ken Henderson wrote on Sun, 20 February 2011 08:14
> > I don't necessarily disagree with any of the theories, but the whole
> thing's
> > got my cat brain working. Rob's curiosity is also aroused since he too
> has
> > never personally seen the inside of our oil coolers. So he's given me
> > permission to disassemble the radiator he left here last summer.
> >
> > During the Pre-FMCA rally, when I hope to have a photographer on hand,
> we'll
> > pull and cut open at least the engine oil cooler and show everyone it's
> > innards. It won't settle the arguments any better than my recommending
> > brand X tires would, but at least I'll quell my curiosity.
> >
> > Stay tuned.
> >
> > Oh yeah: How do I get the tank off? It won't screw off -- will my
> propane
> > torch be enough to de-solder the tank seam? Don't really want to take
> the
> > "GMC Tool" or a cutting wheel to it.
> >
> > Ken H.
> >
> > On Sun, Feb 20, 2011 at 2:52 AM, Ken Burton wrote:
> >
> > >
> > > I am also having a problem with all of these oil cooler worries.
> > > ...
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> i think i've seen a pic of that cooler in the photo site already.
>
> propane torch should work to take the tank off. thin brass and soft solder.
> hold the seam vertical so the solder runs off.
>
> --
> Fred V
> '77 Royale RB 455
> P'cola, Fl
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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>
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Re: [GMCnet] New One Ton Frontend [message #115812 is a reply to message #115810] Sun, 20 February 2011 10:38 Go to previous messageGo to next message
WD0AFQ is currently offline  WD0AFQ   United States
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Hey, this thread was about my new frontend, what happened? Nobody interested in the positive things going on in my life?
Yall are depressing me. Start your own thread. Very Happy
Ok, so I have been sucked in too: I am not so sure an oil cooler had anything to do with this, in fact I doubt that it did. What I am doing is making sure it is eliminated and will not cause a problem in the future. If I could afford it I would buy a new alum. radiator and donate this one to Bean Station for a tear down. It does not look like we will make Perry Ga. I just can not come to grips with coming up with 800 smackers for a new one. Jim K. is sending us a good cooler to mount external. I have discussed this with Jim and with John, the builder here. I watched his face when I mentioned cleaning this cooler. Remember he will be backing up this engine. We are going with a new cooler, even though he might have cleaned this one I could see he liked the new cooler idea much more.
I hope no one has jumped to any real conclusions as to why we had 2 bearings fail. I just can't. One of those things that happens. If John comes up with more I will post it. He seems to be a very thorough guy. Thrust bearing was tight. One thing might be that the two rod bearings were a bit too tight. That is hard to figure out. I know I took the best care of the engine that I knew how. I hotrod my 2 hotrod cars but I do not hotrod the GMC, ask Teri.
Have a great Sunday.
Heading to church services where I can think about more important things than why I am stuck here.
Daytona 500 is today too.
I might just start a new thread on my 1 ton frontend. I like it.
Dan


3 In Stainless Exhaust Headers One Ton All Discs/Reaction Arm 355 FD/Quad Bag/Alum Radiator Manny Tran/New eng. Holley EFI/10 Tire Air Monitoring System Solarized Coach/Upgraded Windows Satelite TV/On Demand Hot Water/3Way Refer
Re: New One Ton Frontend [message #115813 is a reply to message #115739] Sun, 20 February 2011 11:10 Go to previous messageGo to next message
g.winger is currently offline  g.winger   United States
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Location: Warrenton,Missouri
Karma: 0
Senior Member
Dan, if you plan on changing the bearing hubs yourself while on the road. You'll need a 15mm socket to remove the hub to knuckle bolts. Also a 10mm socket to remove the 3 6mm bolts thet hold on the dust/splash shield. Just my 2 cents,,,,,PL
Re: [GMCnet] New One Ton Frontend [message #115827 is a reply to message #115812] Sun, 20 February 2011 12:22 Go to previous messageGo to next message
Larry is currently offline  Larry   United States
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Location: Menomonie, WI
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Senior Member
WD0AFQ wrote on Sun, 20 February 2011 10:38

Hey, this thread was about my new frontend, what happened? Nobody interested in the positive things going on in my life?
Yall are depressing me. Start your own thread. Very Happy
Ok, so I have been sucked in too: I am not so sure an oil cooler had anything to do with this, in fact I doubt that it did. What I am doing is making sure it is eliminated and will not cause a problem in the future. If I could afford it I would buy a new alum. radiator and donate this one to Bean Station for a tear down. It does not look like we will make Perry Ga. I just can not come to grips with coming up with 800 smackers for a new one. Jim K. is sending us a good cooler to mount external. I have discussed this with Jim and with John, the builder here. I watched his face when I mentioned cleaning this cooler. Remember he will be backing up this engine. We are going with a new cooler, even though he might have cleaned this one I could see he liked the new cooler idea much more.
I hope no one has jumped to any real conclusions as to why we had 2 bearings fail. I just can't. One of those things that happens. If John comes up with more I will post it. He seems to be a very thorough guy. Thrust bearing was tight. One thing might be that the two rod bearings were a bit too tight. That is hard to figure out. I know I took the best care of the engine that I knew how. I hotrod my 2 hotrod cars but I do not hotrod the GMC, ask Teri.
Have a great Sunday.
Heading to church services where I can think about more important things than why I am stuck here.
Daytona 500 is today too.
I might just start a new thread on my 1 ton frontend. I like it.
Dan

Oil cooler huh...FWIW, look at this:

http://www.gmcmhphotos.com/photos/showgallery.php?cat=4190

I took mine out, in favor of the Aluminum radiator engine cooler....but I'm going back to this cooler when I get home. JFWIW


Larry Smile
78 Royale w/500 Caddy
Menomonie, WI.
Re: New One Ton Frontend [message #115833 is a reply to message #115813] Sun, 20 February 2011 12:55 Go to previous messageGo to next message
Craig Lechowicz is currently offline  Craig Lechowicz   United States
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Location: Waterford, MI
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g.winger wrote on Sun, 20 February 2011 12:10

Dan, if you plan on changing the bearing hubs yourself while on the road. You'll need a 15mm socket to remove the hub to knuckle bolts. Also a 10mm socket to remove the 3 6mm bolts thet hold on the dust/splash shield. Just my 2 cents,,,,,PL



Blame Canada!, and the other 100 or so countries around the world that went with that new-fangled metric system for that one!


Craig Lechowicz
'77 Kingsley, Waterford, MI
Re: [GMCnet] New One Ton Frontend [message #115893 is a reply to message #115793] Sun, 20 February 2011 17:49 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
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Location: Sydney, Australia
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Senior Member
Ken,

You're funny!

The radiator fails because of something stupid I did.

You're kind enough to help me replace it.

It takes a week so Helen and I break the Ben Franklin rule about guests
("Guests and fish begin to stink after three days.")

I think I asked you if you wanted me to get rid of it but can't remember.

I then come up with more work for you by suggesting that you cut it open and
see what it looks like inside. At least I was smart enough to do that OFF
NET!

After all this you say "So he's given me permission to disassemble the
radiator he left here last summer."

This whole situation demonstrates to me the epitome of "Southern
Hospitality." Plus you have the patience of Job!

Regards,
Rob M.
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426


-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Ken Henderson
Sent: Monday, February 21, 2011 1:15 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] New One Ton Frontend

I don't necessarily disagree with any of the theories, but the whole thing's
got my cat brain working. Rob's curiosity is also aroused since he too has
never personally seen the inside of our oil coolers. So he's given me
permission to disassemble the radiator he left here last summer.

During the Pre-FMCA rally, when I hope to have a photographer on hand, we'll
pull and cut open at least the engine oil cooler and show everyone it's
innards. It won't settle the arguments any better than my recommending
brand X tires would, but at least I'll quell my curiosity.

Stay tuned.

Oh yeah: How do I get the tank off? It won't screw off -- will my propane
torch be enough to de-solder the tank seam? Don't really want to take the
"GMC Tool" or a cutting wheel to it.

Ken H.

On Sun, Feb 20, 2011 at 2:52 AM, Ken Burton wrote:

>
> I am also having a problem with all of these oil cooler worries.
> ...
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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
Re: [GMCnet] New One Ton Frontend [message #115894 is a reply to message #115777] Sun, 20 February 2011 18:00 Go to previous messageGo to next message
jimk is currently offline  jimk   United States
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
Senior Member
When the ol is cold, it will not flow much through the filer, so they
have the relief for that and for high RPM.


On Sat, Feb 19, 2011 at 11:52 PM, Ken Burton <n9cv@comcast.net> wrote:
>
>
> Ken Henderson wrote on Sat, 19 February 2011 20:42
>> The day after I bought the GMC on 30 April 98, the engine self-destructed
>> after 875 of the 950 miles home from Kerville, TX.
>>
>> I did flush the oil cooler, but not with any great care, and the engine I
>> personally rebuild and installed has logged about 80,000 miles since then
>> with no problems.  So, I'll admit to being a little skeptical about the
>> emphasis on cooler cleaning.
>>
>> But, I've been thinking about it more:  The bottom end of the engine wasn't
>> affected.  The perfect crank I took out of it was about the only part I kept
>> -- I gave the rest to an old guy with a truck load of junk who was willing
>> to wait for the salvage yard to open -- I wasn't.
>>
>> I suppose, as far as the cooler was concerned, I got lucky; the #4 piston,
>> busted all to pieces by the swallowed intake valve, didn't scatter fine
>> particles like a slowly disintegrating bearing shell.
>>
>> When the bearing went after <50 miles in the "new" front clip I installed, I
>> again cleaned the cooler, with considerably more care than before.  When the
>> re-rebuilt engine began to worry me with a "knock-like" noise, I was looking
>> for an excuse to install the Cad500, so I did.  I haven't yet torn the 455
>> down; in fact, it moved into the shop yesterday.  Now I'm getting curious so
>> I'll probably tear it down pretty soon.   And maybe hope that it cleaned out
>> the cooler over the 15,000 miles it ran, without getting a chance to mess it
>> up again for the 500 which only has 4-5,000 on it now.
>>
>> No real contribution -- just thinking out loud. :)
>>
>> Ken H.
>> Americus, GA
>> '76 X-Birchaven w/Cad500/Howell EFI+ & EBL
>> www.gmcwipersetc.com
>>
>>
>>
>> On Sat, Feb 19, 2011 at 8:09 PM, Bruce Hislop wrote:
>>
>> > ...Now I'm worried about my new engine based on your experience.  Mine was
>> > a new rad 600 miles before the bearings went out and they flushed it when
>> > the rebuilt engine was installed, but was it enough... or am I just worrying
>> > too much.
>
>
> I am also having a problem with all of these oil cooler worries.
>
> As was stated before, the oil is filtered AFTER it leaves the cooler so what is the problem?
>
> Also what about the oil cooler lines?   Are you going to replace the lines or use them or reuse them?
>
> Someone mentioned that oil can get bypassed when it is cold.  That same bypassed oil also bypasses the cooler.  So bypassing has would have no effect if stuff were trapped in the cooler.
>
> This engine went 7000 miles before failure and had no indication of oil pressure problems.  This sure does not sound line crap circulating around in the oil from the previous engine problem to me.
>
> Why is everyone suspecting the cooler when the engine has not even been taken apart to see what the problem is?   I can think of a lot of other things that could have failed including a sloppy engine rebuild.  Blaming the cooler would be very low on the list.
>
> It would not take much to build a flushing machine out of a pump a few fittings and a high quality filter.  Hook it up and let it run in a recirculation mode for a couple of hours.  Then hook it up reversed and run it again for another few hours.
>
>
> --
> Ken Burton - N9KB
> 76 Palm Beach
> Hebron, Indiana
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--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
Re: [GMCnet] New One Ton Frontend [message #115901 is a reply to message #115893] Sun, 20 February 2011 18:20 Go to previous message
Ken Henderson is currently offline  Ken Henderson   United States
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
Senior Member
Just goes to show you, CRS does have its advantages. And that my curiosity
overrides everything else. :-)

Ken H.

On Sun, Feb 20, 2011 at 6:49 PM, Rob Mueller <robmueller@iinet.net.au>wrote:

> Ken,
>
> You're funny!
> ...
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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