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post #1 of 3 (permalink) Old 04-03-09, 05:58 PM Thread Starter
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confused side-oiler leak

I'm glad I found this site, glad to be here and thanks. I have a 66' 427so. I am pretty sure the rear main is leaking(surprise). Is there a better seal out there than the rope ? If so what brand and part # would you suggest ? Also can I do this w/o engine removal ?
Thanks sparks65

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post #2 of 3 (permalink) Old 04-10-09, 05:38 AM
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Re: side-oiler leak

Fel-pro might do one. Motor out though I think.
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post #3 of 3 (permalink) Old 04-10-09, 08:45 AM
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Re: side-oiler leak

You just have to shop around....but if you do it while the engine is in the vehicle you may have a hard time removing the rear main cap.

**Remember - not only will you have to change the main seal there are two side seals, one on each side, and they are a b---- to install.
Pull all the caps and with the crank hanging from the flywheel and timing chain, turn the engine to let the upper seal half roll out. Install the same way, but don't make it evenly flush, countersink one side so that the other side is showing about 1/32nd -1/16th of an inch and do the opposite with the opposing seal. Then carefully install the side seals, large side to the block, and very carefully insert the needles in the groove on the cap side. reinstall reaining caps, make sure to torque them properly.

I believe you can get the gaskets at your local NAPA, or speed shop if you have one in your area.
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