| motor pan removal [message #253830] |
Mon, 30 June 2014 12:04  |
skip2
Messages: 544
Registered: September 2011
Location: Winter Haven,FL (center o...
Karma: 3
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Senior Member |
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Forgive if this has been answered before. Is it possible to remove the pan of the 455 without pulling the motor? I fully understand that it probably requires removing final drive and tranny and also lifting up the motor some. I vaguely remember it being mention as a spin off of other discussions but don't remember a definitive answer. Anyone out there who has ever done it, helped or seen it done could give me their thoughts or experiences would be appreciated.
Skip Hartline
74 Canyon Lands, FiTech,
3.7 FD LSD, Manny Tranny,
Springfield Distributor,
2001 Chevy Tracker Ragtop Towd
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| Re: motor pan removal [message #253840 is a reply to message #253830] |
Mon, 30 June 2014 12:58  |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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skip2 wrote on Mon, 30 June 2014 10:04Forgive if this has been answered before. Is it possible to remove the pan of the 455 without pulling the motor? I fully understand that it probably requires removing final drive and tranny and also lifting up the motor some. I vaguely remember it being mention as a spin off of other discussions but don't remember a definitive answer. Anyone out there who has ever done it, helped or seen it done could give me their thoughts or experiences would be appreciated.
Skip Hartline
What you said and the starter motor.
Roy Keen
Minden,NV
76 X Glenbrook
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| Re: [GMCnet] motor pan removal [message #253846 is a reply to message #253830] |
Mon, 30 June 2014 14:39 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Skip,
You've got it right. The transmission MUST be removed. The final drive
can remain attached to the axles but you'll probably have to disconnect it
from the engine (I'm no longer positive that's necessary). The engine will
have to be raised a little at the front to remove the pan.
Why do you need to remove it?
HTH,
Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL,
Manny Brakes & 1-Ton, etc., etc.
www.gmcwipersetc.com
On Mon, Jun 30, 2014 at 1:04 PM, Skip Hartline
wrote:
> Forgive if this has been answered before. Is it possible to remove the pan
> of the 455 without pulling the motor? I fully understand that it probably
> requires removing final drive and tranny and also lifting up the motor
> some. I vaguely remember it being mention as a spin off of other
> discussions
> but don't remember a definitive answer. Anyone out there who has ever
> done it, helped or seen it done could give me their thoughts or experiences
> would be appreciated.
> Skip Hartline
>
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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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| Re: [GMCnet] motor pan removal [message #253851 is a reply to message #253846] |
Mon, 30 June 2014 15:36 |
skip2
Messages: 544
Registered: September 2011
Location: Winter Haven,FL (center o...
Karma: 3
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Senior Member |
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Got great oil pressure when first starting 45, but drops to about 25-30 when underway and down to 10 and lower at idle once warmed up. Since the beast set for 2 years before I got it and I have seen this in other motors that have set up to where sludge and other nasties are clogging the screen once it runs long enough to pull it off the bottom of the pan. I got a mechanical oil pressure gauge. No bad noises but just something you always have in the back of your mind. Can you think of a cleaner that won't run the risk of breaking something loose and doing more damage. My dad put STP in a beautiful 54 dodge pick up when I was a kid around 1972 and it ran about and hour and wiped out number 1 crank throw the local mechanic said it was because the truck had never had detergent oil and the stp broke something loose and got into the passages like throwing a clot.
Skip
74 Canyon Lands, FiTech,
3.7 FD LSD, Manny Tranny,
Springfield Distributor,
2001 Chevy Tracker Ragtop Towd
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| Re: [GMCnet] motor pan removal [message #253857 is a reply to message #253851] |
Mon, 30 June 2014 16:24 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Due to my severe neglect of it, my '91 S-10 4.3L got badly sludged up a few
years back. When I removed the rocker covers you could hardly see the
rockers and the oil that got to the top end mostly stayed there,
apparently. After cleaning all that crud out, I ran a quart of Marvel
Mystery Oil (MMO) with cheap 10W-30 through it for a few short run oil
changes. My engine builder friend predicted lower end problems from pickup
screen blockage. But it never happened; the engine's running just fine
10,000+ miles later, and I never had the sort of oil pressure variations
you're reporting.
That's not much of a trial, but a lot of people do swear by MMO. Certainly
pulling the pan is the "right" thing to do. But, Man, it's a lot of work
just for that! :-)
Ken H.
On Mon, Jun 30, 2014 at 4:36 PM, Skip Hartline
wrote:
> Got great oil pressure when first starting 45, but drops to about 25-30
> when underway and down to 10 and lower at idle once warmed up. Since the
> beast
> set for 2 years before I got it and I have seen this in other motors that
> have set up to where sludge and other nasties are clogging the screen once
> it runs long enough to pull it off the bottom of the pan. I got a
> mechanical oil pressure gauge. No bad noises but just something you
> always have in
> the back of your mind. Can you think of a cleaner that won't run the risk
> of breaking something loose and doing more damage. My dad put STP in a
> beautiful 54 dodge pick up when I was a kid around 1972 and it ran about
> and hour and wiped out number 1 crank throw the local mechanic said it was
> because the truck had never had detergent oil and the stp broke something
> loose and got into the passages like throwing a clot.
> Skip
> _______________________________________________
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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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| Re: [GMCnet] motor pan removal [message #253865 is a reply to message #253860] |
Mon, 30 June 2014 17:19 |
Kingsley Coach
Messages: 2691
Registered: March 2009
Location: Nova Scotia Canada
Karma: -34
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If you have 10 lbs, it's not good, but it isn't dead quite yet. You might
get many more thousands of miles yet.
Now to get that oil pump out without pulling anything...begin the
collective cringe now... you 'could' cut a 'flap' or hole in the pan and
reach in to do the job. When you are finished, you can weld up the hole you
cut after flushing out as much oil as possible.
It's a cannibal's method of doing something but you wanted to know !
No I didn't do it, but I've seen it done .
Mike in NS
On Mon, Jun 30, 2014 at 6:40 PM, Kelvin Dietz wrote:
> On 6/30/2014 1:36 PM, Skip Hartline wrote:
>> Got great oil pressure when first starting 45, but drops to about 25-30
> when underway and down to 10 and lower at idle once warmed up. Since the
> beast
>> set for 2 years before I got it and I have seen this in other motors
> that have set up to where sludge and other nasties are clogging the screen
> once
>> it runs long enough to pull it off the bottom of the pan. I got a
> mechanical oil pressure gauge. No bad noises but just something you always
> have in
>> the back of your mind. Can you think of a cleaner that won't run the
> risk of breaking something loose and doing more damage. My dad put STP in a
>> beautiful 54 dodge pick up when I was a kid around 1972 and it ran about
> and hour and wiped out number 1 crank throw the local mechanic said it was
>> because the truck had never had detergent oil and the stp broke
> something loose and got into the passages like throwing a clot.
>> Skip
>>
>
> I did a "refurb" on my motor a few years ago. I found this when I
> pulled the pan.
> http://www.gmcmhphotos.com/photos/455-r-amp-r-engine-work/p10860.html
>
> That's carbon crumbs that were packed into the oil pickup. Bit and
> pieces that had been baked onto the turkey tray above, made it past the
> cam and into the oil pan. Nice slurry of that in the pan. Carbon
> filtering is good for bourbon, not so much for oil.
>
> Oil pressure went up about 10psi after this. 40+ once warm and
> running. Can't say what at idle. It hasn't worried me and 10psi
> certainly would.
>
> Kelvin
> '73 23' in Eugene, OR
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--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS
* This is my second trip through the 60's; the first time the drugs were
better !
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| Re: [GMCnet] motor pan removal [message #253982 is a reply to message #253851] |
Tue, 01 July 2014 11:24 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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skip2 wrote on Mon, 30 June 2014 14:36Got great oil pressure when first starting 45, but drops to about 25-30 when underway and down to 10 and lower at idle once warmed up. Since the beast set for 2 years before I got it and I have seen this in other motors that have set up to where sludge and other nasties are clogging the screen once it runs long enough to pull it off the bottom of the pan. I got a mechanical oil pressure gauge. No bad noises but just something you always have in the back of your mind. Can you think of a cleaner that won't run the risk of breaking something loose and doing more damage. My dad put STP in a beautiful 54 dodge pick up when I was a kid around 1972 and it ran about and hour and wiped out number 1 crank throw the local mechanic said it was because the truck had never had detergent oil and the stp broke something loose and got into the passages like throwing a clot.
Skip
I'd be tempted to run a motor flush (you can get it a Walmart or Autozone)through it for a few hours and then drain and refill with some inexpensive oil and add a detergent additive and get some miles on it and drain it again.
Bob de Kruyff
78 Eleganza
Chandler, AZ
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