The Ford Barn

V8guy · 06-25-2023, 12:49 PM

What is the advantage of using a Graphtite rear seal over the one supplied in my Felpro gasket set. Does it provide a better seal-?

THANKS Mike

Ronnieroadster · 06-25-2023, 02:21 PM

Both seal the same. Using the graphite the only advantage is there's less seal drag on the crankshaft compared to the rope version supplied in most gasket sets.
Ronnieroadster

glennpm · 06-25-2023, 02:35 PM

Good for a couple of HP Ronnie :-)

Glenn

Ronnieroadster · 06-25-2023, 07:29 PM

Quote:

Originally Posted by glennpm

Good for a couple of HP Ronnie :-)

Glenn

Graphite will help with some gain. Were using lip seals now there definitely better for HP gains.

Bored&Stroked · 06-26-2023, 07:27 AM

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Hey Ronnie - what modern "lip seal" are you using and did you have to do any special machine work in the stock "seal plates" (59x blocks). Also, have you done this for 39-48 engines or later? Thanks as always!

06-25-2023, 12:49 PM	#1
V8guy Member Join Date: Sep 2013 Location: Milwaukee Wi Posts: 67	Rear Main Oil Seals What is the advantage of using a Graphtite rear seal over the one supplied in my Felpro gasket set. Does it provide a better seal-? THANKS Mike

06-25-2023, 02:21 PM	#2
Ronnieroadster Senior Member Join Date: Dec 2010 Location: East Coast in CT Posts: 1,539	Re: Rear Main Oil Seals Both seal the same. Using the graphite the only advantage is there's less seal drag on the crankshaft compared to the rope version supplied in most gasket sets. Ronnieroadster __________________ I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH

06-25-2023, 02:35 PM	#3
glennpm Senior Member Join Date: Sep 2014 Location: Wiscasset, Maine Posts: 2,011	Re: Rear Main Oil Seals Good for a couple of HP Ronnie :-) Glenn

06-26-2023, 07:27 AM	#5
Bored&Stroked Senior Member Join Date: Jan 2011 Location: Central Ohio Posts: 5,097	Re: Rear Main Oil Seals Sponsored Links (Register now to hide all advertisements) Hey Ronnie - what modern "lip seal" are you using and did you have to do any special machine work in the stock "seal plates" (59x blocks). Also, have you done this for 39-48 engines or later? Thanks as always!