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Engine Oil Seepage/Cleanup
With the body off and the frame about done, I want to clean up the engine before installing it. It’s a NOM 283 that was rebuilt in 97, and maybe driven 10,000 miles since. Based on the photos below, what gaskets/seals would you suggest replacing while I have it on the stand? I am resurfacing the flywheel and installing a new clutch set. Any other areas I should focus on? It has a Muncie 4-Speed. Thanks for your input! https://cimg1.ibsrv.net/gimg/www.cor...6ed5169dc.jpeg https://cimg2.ibsrv.net/gimg/www.cor...7349c3c7e.jpeg |
Nothing, use some Gunk engine cleaner or Gunk foamy engine brite and a high pressure garden hose. Tape off the intake and exh and dizzly holes and avoid high pressure on those areas.
Doug |
I'd use some simple engine degreaser...a pressure washer and some new paint.
JIM |
That dirt looks more like road grim and belt material than it does leaky oil.
But... when it was used last would be more important as to what gaskets to change. How long has it been since it ran? |
Originally Posted by SledgeHammer 2.0
(Post 1598043110)
That dirt looks more like road grim and belt material than it does leaky oil.
But... when it was used last would be more important as to what gaskets to change. How long has it been since it ran? |
Originally Posted by Hermn59
(Post 1598043174)
It has been driven every summer except this one. I drove it in December before tearing it down. I would ride with it then. If it's been sitting for a long time seals dry out, but if it's been run, I would keep running it. |
I respectfully disagree with the previous posts. Since you already have the engine out, I would certainly clean and degrease the engine, but I would also buy a new gasket set and replace the oil pan, valve covers, timing chain, intake and exhaust gaskets. Then if needed, repaint the block. |
Originally Posted by warrenmj
(Post 1598045044)
I respectfully disagree with the previous posts. Since you already have the engine out, I would certainly clean and degrease the engine, but I would also buy a new gasket set and replace the oil pan, valve covers, timing chain, intake and exhaust gaskets. Then if needed, repaint the block. |
Originally Posted by leif.anderson93
(Post 1598046851)
What exhaust gaskets are you referring??
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Originally Posted by warrenmj
(Post 1598045044)
I respectfully disagree with the previous posts. Since you already have the engine out, I would certainly clean and degrease the engine, but I would also buy a new gasket set and replace the oil pan, valve covers, timing chain, intake and exhaust gaskets. Then if needed, repaint the block. |
If it aint broke dont fix it.
-Changing an oil pan gasket that is already sealed well is just inviting a leak -NO! NO! exhaust manifold gaskets! Pick your favorite high temp sealant (I use Hondabond) and thats it. -Not a fan of pressure washers in inexperienced hands. If the engine is out of the car just use a good detergent or sudsy degreaser anda mild 3M scrubby pad and rinse carefully with low flow from the hose. As already mentioned sealoff all engine entry points. -After it has dried well touch up the orange where needed. |
It doesn’t look like an oil leak to me. The fan blows all kinds of road grime, fan belt dust, and other junk onto the front of the engine. Take your finger and reach behind the balancer and give it a good wipe. Is it wet with oil or dry and dirty? The balancer oil seal is the only dynamic seal on the front of the engine.That said, I am of the opinion that as long as the engine is out reseal it unless it was done recently. |
Originally Posted by Hermn59
(Post 1598043057)
With the body off and the frame about done, I want to clean up the engine before installing it. It’s a NOM 283 that was rebuilt in 97, and maybe driven 10,000 miles since. Based on the photos below, what gaskets/seals would you suggest replacing while I have it on the stand? I am resurfacing the flywheel and installing a new clutch set. Any other areas I should focus on? It has a Muncie 4-Speed. Thanks for your input! If it was mine, I would leave it alone because it's not leaking , mistakes happen and you could cause a leak. I do understand the guys who say reseal it. It's really just up to you. |
My experience with the small blocks is the valve cover gaskets and rear main seal causing leaks....and those can be changed with the engine in the car without undue difficulty. But - do what you think is best...
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easy too do now if its a C1 car a new water pump would be wise
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Thanks for all of the input. Most of it was dry grime as described, so I think I will leave it sealed. After removing the pulleys I noticed quite a trail from the weep hole, so I am replacing the water pump. Here it is after cleaning, so I will scuff it up, spray it, and get it bolted back in. https://cimg0.ibsrv.net/gimg/www.cor...aba491f2b.jpeg https://cimg3.ibsrv.net/gimg/www.cor...01e19e7a2.jpeg |
Looks great, good decision! |
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