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FE Power Forums => FE Technical Forum => Topic started by: Joey120373 on June 04, 2020, 04:06:00 PM

Title: 351c front seal question
Post by: Joey120373 on June 04, 2020, 04:06:00 PM

I have Jays timing cover, and I plan on using a 351c seal.

I bought a brand new steal balancer spacer, and reading the instructions for the cover it says to machine the sealing surface out towards the balancer, by ~ .625 (? IIRC ) .

I gave the spacer to a co worker who has a lathe, but I wanted to double check before he started cutting on it. There is a short step from the large diameter ( balancer end ) to the back, and he wants to make sure he doesn’t cut to the wrong dimension.
I figured one of the experts here would know off the top of their heads what diameter to cut it to.

Thanks!

Title: Re: 351c front seal question
Post by: Joey120373 on June 04, 2020, 05:24:31 PM

I forgot to mention I did look it up on the inter web, and I got a seal inner diameter of 1.874, with the sealing surface of the spacer at 1.875.

I am assuming this is correct but I trust the folks here way more that the internet ;D 8)

Title: Re: 351c front seal question
Post by: jayb on June 04, 2020, 06:32:22 PM

Joe, you just need to extend the sealing surface of the sleeve back towards the front of the crank.  That step you mention needs to move back 5/8" closer to the balancer.  The outside diameter of the sealing surface should remain the same as the original.  The seal you have should work fine - Jay