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Old 04-14-2007, 09:21 PM
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351W Rear main seal...

I have an engine rebuild kit for a 1987 351W.

In the kit there is a one piece rear main seal with a valley on one side and flat on the other. I assume the valley goes towards the engine and the flat side towards the tranny. Can anyone confirm this. I have never swaped out a rear main seal before.

Also, the package came with about 12-16 of this little round rubber things. Never seen them before. Can anyone tell me what they are used for?

Thanks!

Dave

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Old 04-15-2007, 05:45 AM
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Quote:
Originally Posted by 301Customs

I have an engine rebuild kit for a 1987 351W.

In the kit there is a one piece rear main seal with a valley on one side and flat on the other. I assume the valley goes towards the engine and the flat side towards the tranny. Can anyone confirm this. I have never swaped out a rear main seal before.
Yes. If one has a spring in it also, the spring will go towards the lubricant. There is a special service tool that makes installation of these much more precise.

Quote:
Also, the package came with about 12-16 of this little round rubber things. Never seen them before. Can anyone tell me what they are used for?
Valve stem seals?
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Old 04-16-2007, 02:20 PM
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Thanks...

Thanks for the input.

Actually it slid right on, no problem.

I thought the valley should face the block. Just wanted to make sure.

You were right about the other rubber pieces.

Thanks again!

Dave
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Old 04-16-2007, 02:48 PM
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They may just be keepers or 'bungs' to keep the gasket in place - keep it from moving around on the pan lip? My guess.
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