351 M oil pan gasket question
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Senior User
Joined: Feb 2008
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From: League City Texas
351 M oil pan gasket question
Hello, I had a question about installing an oil pan gasket and the best way to keep it from leaking. After looking through many parts stores I have determined that a single piece gasket is not available for the 351 Modified motor. Knowing this, my only option is installing a 4 piece cork/rubber gasket which I am not a big fan of. A couple of months ago I installed a 4 piece gasket and started leaking just a few days later. Does anyone have any advise on how to install the 4 piece gasket and avoid leakage? Do I install the rubber ends on the motor first? It seems like I can put rtd on the cork ends and attach it to the oil pan but the rubber ends seem like they will move as I try to intall the pan back on the motor. Any advise is greatly appreciated. I dont feel like doing this a third time so I want to get it right. Thanks
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Joined: Mar 2004
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Yes put the rubber ends on first with plenty of silicone. I use the 4 end studs and a few pan rail studs on each side from a Milodon pan stud kit to put the cork up and hold it in place. Once I have enough bolts started I remove the studs and put the bolts back in. Draw it up slowly and evenly.
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Joined: Feb 2009
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From: northwest,WA
what I did was flip it on the engine stand (I hope yours is out its so much nicer to do this)
then apply rtv all around rubber and cork
then put on gasket, then another layer of rtv then put the pan on
then tork them at 3 intervals starting at the center 4 bolts in a cross pattern outword (sort of the same pattern as the recommended intake torq sequence)
its been 250 miles on the engine and not one drip
then apply rtv all around rubber and cork
then put on gasket, then another layer of rtv then put the pan on
then tork them at 3 intervals starting at the center 4 bolts in a cross pattern outword (sort of the same pattern as the recommended intake torq sequence)
its been 250 miles on the engine and not one drip
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Senior User
Joined: Feb 2008
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From: League City Texas
Mark a. will rtv work or does it have to be silione? Also, are you saying put the silicone on the rubber gaskets and apply to motor side the apply the cork gasket to oil pan and install? And spud gunman, my motor is on the truck. Are you saying apply the rtv on the cork and rubber gaskets and apply to motor end then apply more rtv to oil pan and install?
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