SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: KonaCole on November 15, 2008, 10:27:01 AM

Title: rubber vs cork
Post by: KonaCole on November 15, 2008, 10:27:01 AM
I am fixing an intake oil leak and was wondering weather I should use rubber or cork end gaskets to go across the valley?  Is one better than the other?
Title: Re: rubber vs cork
Post by: crewchief22 on November 15, 2008, 11:09:15 AM
I've had real good luck using a thick bead of grey RTV at each end and not using the gaskets at all.
Title: Re: rubber vs cork
Post by: beerjet on November 15, 2008, 12:46:18 PM
I've had real good luck using a thick bead of grey RTV at each end and not using the gaskets at all.

(https://www.socaljetboats.com/cpg/albums/userpics/10034/exactly.gif)

-beerjet-
Title: Re: rubber vs cork
Post by: HDriderTH on November 15, 2008, 01:07:07 PM
shitcan 'em both, GM dont even use 'em any more.
Title: Re: rubber vs cork
Post by: The Chaz on November 15, 2008, 01:18:36 PM
I agree also.  With an aluminum intake (Edlebrock) they tell you to just use silicone.  I tried rubber and it worked for a few trips and blew out a little (leak).  Now I just use a THICK bead of the grey, sit the intake on it and hand tight.  Then after about 20-30 minutes tighen a bit more and finally torque after about an hour.  Has worked for me so far (On a Ford) >:D
Title: Re: rubber vs cork
Post by: 76 Southwind on November 15, 2008, 01:21:32 PM
Another vote for a thick bead of RTV, after having my block decked, the amount of material removed eliminated both the cork and rubber. I put a real thick RTV bead on and then carefully lowered the tunnelram on the block. Cranked it down and for the first time NO LEAKS! I was so tired of blowin' oil all over the transom.  ;)
Title: Re: rubber vs cork
Post by: HDriderTH on November 15, 2008, 01:23:08 PM
not too thick 1/4 inch, looks tacky as Fuc w/ that shit hangin out all over the place
Title: Re: rubber vs cork
Post by: beerjet on November 15, 2008, 02:35:04 PM
not too thick 1/4 inch, looks tacky as Fuc w/ that shit hangin out all over the place
Razor blades arent just for threatening hookers and cutting cocaine anymore Terry . Your right though , 1/4 inch should do ya .

-beerjet-
Title: Re: rubber vs cork
Post by: LakesOnly on November 15, 2008, 06:05:27 PM
...was wondering weather I should use rubber or cork....
Using a rubber always seems to retain the lube for me; on the other hand, no matter how many times I put a cork her mouth somehow she manages to keep bitching....

LO
Title: Re: rubber vs cork
Post by: beerjet on November 15, 2008, 07:07:28 PM
Using a rubber always seems to retain the lube for me; on the other hand, no matter how many times I put a cork her mouth somehow she manages to keep bitching....

LO

Use the skin cork Paul !  :D

-beerjet-
Title: Re: rubber vs cork
Post by: jet boat performance on November 15, 2008, 07:26:44 PM
Trash the end seals, "peen" the end seal ares of the block and manifold lightly with a punch and small hammer then use a bead of "right stuff" (sealant)
on the ends ,the stuff "vulcanizes" and will not leak been using it for years and lots of motors never found a better product .. my 02

re rubbers and cork , CORK is my weapon of choice  ;D
Title: Re: rubber vs cork
Post by: wizard612 on November 15, 2008, 07:51:47 PM
Carefull on the RTV guys. I agree on the elimination of the gaskets but don't let the backyard hackers out there use an entire tube of wonder goop. Use it to fill the gap not the valley.  If you end up with enough to have to trim off on the outside with a blade you may have enough buldging into the inside that could get into the oiling system.  Be moderate in all you do when using silicon. Go nuts on the race course.
Title: Re: rubber vs cork
Post by: HDriderTH on November 15, 2008, 08:04:08 PM
Right, what you got hangin out you got hangin in. So save the blades for blow. I use black RTV and just enough to get a nice little bead sticking out that you can see. I bumped the bead comming down with the manifold one time and it had a little whoopty in the bead so the guy I was working for told me that was ametureish, very ametureish. So I told him Fuc you I quit. It was a big ole cast iron tri-power 409 manifold, shit happens.
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