The Ford Barn

zoegrant · 09-19-2019, 09:09 PM

Spent a whole afternoon working to install a neoprene rear seal in my 272 engine which is still in the car.
Come hell or high water I could not install those side seals with the nails.
Just seems too tight. My plan was to install the two piece rear main gasket and then torque the cap down to 18lb. but with the cap torqued down, the side rubber seals would not slide in even with assembly lube . I had to remove the cap 1/2 way in order to start the seals in but they still would not fit in.
WHAT AM I DOING WRONG ? There must be a trick to it. I am using a fairly new billet aluminum cap
Can these side seals be left out and just filled with RTV in place of the rubber and nails ?

Daves55Sedan · 09-19-2019, 09:43 PM

I am sending text to your private message inbox that has major detail regarding application of grease and copper sealer and all sort of tricks you should read. Don't know if it will help in doing a right-side up seal installation though. Still, well worth reading.

darrell · 09-20-2019, 06:01 AM

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they can give you a run for it.i have used silicone instead.

09-19-2019, 09:09 PM	#1
zoegrant Senior Member Join Date: Jun 2010 Location: tolland CT Posts: 773	Another rear main seal issue Spent a whole afternoon working to install a neoprene rear seal in my 272 engine which is still in the car. Come hell or high water I could not install those side seals with the nails. Just seems too tight. My plan was to install the two piece rear main gasket and then torque the cap down to 18lb. but with the cap torqued down, the side rubber seals would not slide in even with assembly lube . I had to remove the cap 1/2 way in order to start the seals in but they still would not fit in. WHAT AM I DOING WRONG ? There must be a trick to it. I am using a fairly new billet aluminum cap Can these side seals be left out and just filled with RTV in place of the rubber and nails ? Last edited by zoegrant; 09-19-2019 at 09:38 PM.

09-19-2019, 09:43 PM	#2
Daves55Sedan Senior Member Join Date: May 2010 Location: Granite City, Illinois Posts: 3,008	Re: Another rear main seal issue I am sending text to your private message inbox that has major detail regarding application of grease and copper sealer and all sort of tricks you should read. Don't know if it will help in doing a right-side up seal installation though. Still, well worth reading.

09-20-2019, 06:01 AM	#3
darrell Senior Member Join Date: Dec 2010 Location: p.e.i. Posts: 1,060	Re: Another rear main seal issue Sponsored Links (Register now to hide all advertisements) they can give you a run for it.i have used silicone instead.