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Restoration & Repair Tips Board

Making Gaskets

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Paul_NJ

07-27-2004 18:06:45




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I'd appreciate hearing experience in sealing the oil pan to the block with black RTV instead of using a cork gasket. Also, what do you guys recommend for installing regular gaskets - do you put them on dry or use gasket cement?

I'm putting my Farmall Cub back together and I like to hear from those who avoid leaks.

Thanks




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George

07-28-2004 10:38:13




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 Re: Making Gaskets in reply to Paul_NJ, 07-27-2004 18:06:45  
Personally I do not like RTV gas materials for the reasons listed earlier. If you do use it, the surfaces have to be absolutely free of any traces of oil. Clean with fresh solvent and clean paper towels, then clean again -- the surfaces can't be too clean.

As for gasket cement, I've always have had good luck with Permatex #2 or #3, depending on the application.



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Ron

07-28-2004 03:34:26




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 Re: Making Gaskets in reply to Paul_NJ, 07-27-2004 18:06:45  
Cork makes for lousy gaskets as it hardens over the years. If a composition or better yet rubber gasket is available, that's always my first choice.

Glue the gasket to the sheet metal part with Hylomar. Just a little bit does it. Then coat the casting side of the gasket with a light coat of moly grease. Not only will it not leak, you now have a lifetime gasket... you can take the pan off many times without damaging it. Just reapply grease for each reinstallation.

Be sure to properly torque the oil pan bolts. This is especially true with cork gaskets but any gasket can be destroyed by over-torquing the bolts.

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george md

07-28-2004 22:38:22




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 Re: Re: Making Gaskets in reply to Ron, 07-28-2004 03:34:26  
Ron ,

where have you been for the last 25 or 30 years ? plain cork went out of style way back, now all the cork is ground and added to an elastomer to make the sheets. And it is one of the best sealing materials.

PDI man says you been making trouble on the garden tractor board too.

george



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buickanddeere

07-31-2004 14:46:11




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 Re: Re: Re: Making Gaskets in reply to george md, 07-28-2004 22:38:22  
Buzz off George!



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HEY RON

07-31-2004 20:41:14




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 Re: Re: Re: Making Gaskets in reply to buickanddeere, 07-31-2004 14:46:11  
Hey Ron, Why did you post this as "buickanddeere"
If you will look to the left margin, your IP address is the same as your post above. Very unethical.
Van



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george md

07-31-2004 22:42:57




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 Re: Re: Re: Making Gaskets in reply to HEY RON, 07-31-2004 20:41:14  
thought that was out of character for
band deere



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Ron

07-31-2004 05:56:21




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 Re: Re: Re: Making Gaskets in reply to george md, 07-28-2004 22:38:22  
Wrong again!

Many OEM and NOS cork gaskets are still used in old engines. The ones you are refering to are called "cork/rubber compostite gaskets" which I already explained.

pdi monkey tells me you are causing trouble again!



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TDK

07-27-2004 21:29:06




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 Re: Making Gaskets in reply to Paul_NJ, 07-27-2004 18:06:45  
This is what works for me, Paul. I always use a gasket, although it's said RTV alone works well. I glue gasket to the oil pan, valve cover,etc. with cement(3M Plastic & Emblem Adhesive). Then when dry I use a little RTV on the gasket surface and bolt on. If valve cover,etc. ever has to be removed later, it'll usually come off without sticking to both surfaces and tearing it in two. Part can be reinsalled with RTV, reusing the gasket with good results. This is only my opinion, and you know what they say about opinions!

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george md

07-27-2004 21:25:25




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 Re: Making Gaskets in reply to Paul_NJ, 07-27-2004 18:06:45  
Paul, Having been in the engine rebuild business for
the last 25 years we have tried many things , the
best one seems to be K&W copper coat , NOT permatex as that has almost no sticky . Spray
the K&W on , put on the metal face and the mating face of the gasket, let dry for 3 or 4 minutes ,
assemble . RTV is a great plumbers tool ( tub and tile sealer). We all use it some in engines ,but after
disassembling many engine failures and finding
RTV in places you wouldn't think it could get in,
about the only place I use it is the 4 corners of
V8 intakes (one drop) and the 4 corners of (short
skirt blocks) oil pans (one drop). If you use it and it hangs out from a gasket on
the out side , you can bet it is hanging out on the inside . It will break off and get in oil
coolers , piston cooler nozzles, oil passages to the crank and many more.

george

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