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440 Rear Main Seal- which is best #853418 11/14/10 02:42 PM 11/14/10 02:42 PM
Joined: Mar 2004 Posts: 267 Arizona jsully OP enthusiast
jsully OP enthusiast Joined: Mar 2004 Posts: 267 Arizona	I have searched this extensively here on moparts, but have not gotten much feedback on this...Which 440 Rear Main Seal works best (brand and configuration-rubber sides or fiber sides...)? I understand they will all seal if applied correctly--but is there one that is better (maybe easier to do while engine is in the car) than the others? Thanks

Re: 440 Rear Main Seal- which is best [Re: jsully] #853419 11/14/10 02:51 PM 11/14/10 02:51 PM
Joined: Nov 2007 Posts: 21,844 Kirkland, Washington Pacnorthcuda Too Many Posts
Pacnorthcuda Too Many Posts Joined: Nov 2007 Posts: 21,844 Kirkland, Washington	The Viton seals seem to be the best. Get the kit with the Viton rubber side seals too, the old method of silicone sealing the retainer sides to the block sucks!

Re: 440 Rear Main Seal- which is best [Re: jsully] #853420 11/14/10 03:07 PM 11/14/10 03:07 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Quote: Which 440 Rear Main Seal works best (brand and configuration-rubber sides or fiber sides. the one guy on here used strings from an old style mop and packed them into the sides & said sealed perfect/not a drop live every 24 hour block of time like it's your last day on earth

Re: 440 Rear Main Seal- which is best [Re: Pacnorthcuda] #853421 11/14/10 03:07 PM 11/14/10 03:07 PM
Joined: Mar 2004 Posts: 267 Arizona jsully OP enthusiast
jsully OP enthusiast Joined: Mar 2004 Posts: 267 Arizona	Thank you much! I assume these are available at Napa or Carquest?

Re: 440 Rear Main Seal- which is best [Re: jsully] #853422 11/14/10 03:38 PM 11/14/10 03:38 PM
Joined: Jan 2003 Posts: 4,588 St. John's Newfoundland 440newport master
440newport master Joined: Jan 2003 Posts: 4,588 St. John's Newfoundland	The last fel-pro seal I bought didn't come with any seals for the sides, just a tube of RTV and 2 pipe cleaners. The instructions said to fill up the sides with RTV and then wet the pipe cleaners and stuff them down in there. I thought it was kind of but it worked and doesn't leak. I did need more RTV than they give you though. The only thing I don't like is the RTV squeezes out the sides pretty good leaving big blobs of it behind the #5 main cap.

Re: 440 Rear Main Seal- which is best [Re: Pacnorthcuda] #853423 11/21/10 02:44 PM 11/21/10 02:44 PM
Joined: Mar 2004 Posts: 267 Arizona jsully OP enthusiast
jsully OP enthusiast Joined: Mar 2004 Posts: 267 Arizona	Quote: The Viton seals seem to be the best. Get the kit with the Viton rubber side seals too, the old method of silicone sealing the retainer sides to the block sucks! I ordered a set of viton side and lip seals from 440Source yesterday. I will keep you posted...

Re: 440 Rear Main Seal- which is best [Re: jsully] #853424 11/22/10 03:00 PM 11/22/10 03:00 PM
Joined: Feb 2006 Posts: 187 good ole USA M moparlifer member
moparlifer member M Joined: Feb 2006 Posts: 187 good ole USA	Super Performance makes the best viton rear main seal including rear side seals. you can get them from Mike at Chenowethspeedandnachine.com or call 309-266-8084. I run them in my car.

Re: 440 Rear Main Seal- which is best [Re: jsully] #853425 11/22/10 03:13 PM 11/22/10 03:13 PM
Joined: Jan 2009 Posts: 627 IN B BIG BEAR mopar
BIG BEAR mopar B Joined: Jan 2009 Posts: 627 IN	Best Machine makes a pretty sweet rear main that you may want to consider. Last edited by BIG BEAR; 11/22/10 03:14 PM.

Re: 440 Rear Main Seal- which is best [Re: jsully] #853426 11/22/10 03:14 PM 11/22/10 03:14 PM
Joined: Apr 2003 Posts: 12,245 Looking for a way out of Middl... IMGTX I Live Here
IMGTX I Live Here Joined: Apr 2003 Posts: 12,245 Looking for a way out of Middl...	How smooth is the sealing surface? I prefer a rope seal if the factory cross hatch isn't worn smooth myself. It isn't usually a problem now because almost all these cranks have 50 bazillion miles and have been worn smooth long ago.

Re: 440 Rear Main Seal- which is best [Re: moparlifer] #853427 11/23/10 07:11 PM 11/23/10 07:11 PM
Joined: Mar 2004 Posts: 267 Arizona jsully OP enthusiast
jsully OP enthusiast Joined: Mar 2004 Posts: 267 Arizona	Quote: Super Performance makes the best viton rear main seal including rear side seals. you can get them from Mike at Chenowethspeedandnachine.com or call 309-266-8084. I run them in my car. Dang, where were you at the beginning of this thread.....

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