Replacing oil pan gasket and rear main seal 394
#1
Replacing oil pan gasket and rear main seal 394
Removed engine to replace the rear main seal and deal with some transmission issues, but wanted to gather information before proceeding.
It recommends in the service manual to use cement #557621 and on the rear main bearing cap and cement # 557622 to bottom side of new fiber gaskets on oil pan and exposed surfaces of seals front and rear.
In your best recommendation what works best in todays technology to ensure that the oil pan gasket and front seal and rear main seal will not leak?
Application is a 1963 394...
It recommends in the service manual to use cement #557621 and on the rear main bearing cap and cement # 557622 to bottom side of new fiber gaskets on oil pan and exposed surfaces of seals front and rear.
In your best recommendation what works best in todays technology to ensure that the oil pan gasket and front seal and rear main seal will not leak?
Application is a 1963 394...
#2
Trackz, sealers have come so far since 1963 that I think any good current gasket cement would work fine in your application. I tend to shy away from RTV sealers on oil-related components, but Permatex black or copper should work fine.
I'm looking at a rear main job on my green one, and I honestly think I'm going to farm it out. I have neither time nor energy to tackle a big job like that anymore. Trouble is the mechanic I had intended to use split from his wife and left for parts unknown. Guess better now than halfway thru my rear main job, eh?
I'm looking at a rear main job on my green one, and I honestly think I'm going to farm it out. I have neither time nor energy to tackle a big job like that anymore. Trouble is the mechanic I had intended to use split from his wife and left for parts unknown. Guess better now than halfway thru my rear main job, eh?
#3
You want to use an anaerobic flange sealant for the machined surfaces.
http://www.permatex.com/products/aut..._Sealant_a.htm
Or if you search Ebay maybe someone has a nice 48 year old NOS tube of GM sealant. LOL
http://www.permatex.com/products/aut..._Sealant_a.htm
Or if you search Ebay maybe someone has a nice 48 year old NOS tube of GM sealant. LOL
#4
#5
You want to use an anaerobic flange sealant for the machined surfaces.
http://www.permatex.com/products/aut..._Sealant_a.htm
http://www.permatex.com/products/aut..._Sealant_a.htm
I looked at the website and it looks like that is what I will go with. I ordered the pan gasket and rear main seal-Not sure if it will be cork or rubber for the pan gasket, but will use permatex high tack spray to hold onto the pan then bolt up the pan. Thanks for the advise..
#7
Just put a neoprene rear main in my 394...the old rope one was a pain in the *** to get all out from under the crank...had to lift the crank up to get it all out and I wouldn't want to stuff another rope one back in there, although I'm sure it would work, the neoprene ones come formed in the horseshoe shape and slipped right back in nice and easy. Only had it running for maybe 2-3 hours now, but no signs of leak from back there and I have gone under to check after each run so far.
#8
62starfire63-
Just painted the top portion and heads the same Dupli-color as your engine. Going to put on aluminum valve covers and painted exhaust manifolds tonight- underhood black the front brackets and p/s pump- going to tackle the rear main and oil pan Thursday-parts should be in by then. Thanks for all the advise....
Just painted the top portion and heads the same Dupli-color as your engine. Going to put on aluminum valve covers and painted exhaust manifolds tonight- underhood black the front brackets and p/s pump- going to tackle the rear main and oil pan Thursday-parts should be in by then. Thanks for all the advise....
#10
#12
got it through ebay in an complete engine gasket set...think u can fin them sold seperately through "fel-pro" or "best gaskets"
http://cgi.ebay.com/ebaymotors/Oldsm...Q5fAccessories
i think this is the kit i ordered....
http://cgi.ebay.com/ebaymotors/1961-...item588b66149f
just search ebay it was cheaper then my local parts guys could get it, easier to find and shipped to my door
http://cgi.ebay.com/ebaymotors/Oldsm...Q5fAccessories
i think this is the kit i ordered....
http://cgi.ebay.com/ebaymotors/1961-...item588b66149f
just search ebay it was cheaper then my local parts guys could get it, easier to find and shipped to my door
#13
got it through ebay in an complete engine gasket set...think u can fin them sold seperately through "fel-pro" or "best gaskets"
http://cgi.ebay.com/ebaymotors/Oldsm...Q5fAccessories
i think this is the kit i ordered....
http://cgi.ebay.com/ebaymotors/1961-...item588b66149f
just search ebay it was cheaper then my local parts guys could get it, easier to find and shipped to my door
http://cgi.ebay.com/ebaymotors/Oldsm...Q5fAccessories
i think this is the kit i ordered....
http://cgi.ebay.com/ebaymotors/1961-...item588b66149f
just search ebay it was cheaper then my local parts guys could get it, easier to find and shipped to my door
Just ordered one- Thanks again- Any particular sealants that you used when you installed the neoprene seal- Step by step...
#15
It sure makes a difference to the misses when the garage floor is oil free
#16
It seals very well (In my experience better than plain cork) and does not stick the the parts as easily.
Works good for valve covers and such that may need to be removed and reinstalled once in a while ie valve covers if you have adjustable rockers.
#17
I've heard that if you go to the neoprene seal, you have to pollish the serations(oil grooves) off of the crank surface. Other wise, they will chew up the new neoprene seal.
I just put a Best Gasket graphtite rope seal in my 78 TA's pontiac 400. A little over 200 miles now with no leaks. I'm in the process of replacing the rear main in the 455 on my 442 with the same seal.
I just put a Best Gasket graphtite rope seal in my 78 TA's pontiac 400. A little over 200 miles now with no leaks. I'm in the process of replacing the rear main in the 455 on my 442 with the same seal.
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dallasite21
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June 20th, 2010 05:37 AM