head gasket

igobill

New User
I'm building a 9N engine. It looks like it had a felt type head gasket with metal surrounds for penetrations. However I purchased a gasket set and it has a metal gasket. What are the tradeoffs and should I buy a felt gasket since it already had one?

Second question: What type of form a gasket material is best for the pan and other covers? I hear that a red RTV type is best, but I have no experience with any.

Thanks for your advice.
 

The metal gasket will work OK it needs a sealer line permatex aviation sealer.


https://www.permatex.com/products/g...x-aviation-form-a-gasket-no-3-sealant-liquid/

Use it on the head bolt threads and freeze plugs..

Most prefer a fel-pro head gasket no sealer needed but you will still need a sealer on the head bolts.

RTV is used on the corners of the gaskets were that end are were the bottom of the timing corners meat the pan gasket as a gap filler. I use a very light coat on the timing cover to block gasket on both sides and on the governor to cover gasket on both sides.

https://www.permatex.com/products/g...igid-high-torque-rtv-silicone-gasket-maker-2/

I use Ultra copper on the exhaust gasket both sides just a thin coat. If you are fugal you could use it in place of the ultra grey RTV.

https://www.permatex.com/products/g...aximum-temperature-rtv-silicone-gasket-maker/

I glue the valve cover gasket to the cover with 3M 8001 weatherstrip.



http://www.autozone.com/sealants-gl...-weatherstrip-and-gasket-adhesive/196147_0_0/
 

Nuttin sticky about it other than the un-experienced make up excuses to there like'N...

The last N engine I did leaked rat were I have my finger.. The cover had to come off I sealed it with RTV... It will not happen again cuzz the gasket will not go on DRY.... I am lucky to be able to find those leaks before I run the engine.

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Red isn't the best. Hobo has good info for you. I can't add anything except when I use metal head gaskets, which I prefer, I make sure the head and the deck are flat.
 

ASEguy is correct. Doesn't matter what it is, (oil pan, block decks, cylinder heads, valve covers, timing covers, manifolds) and on what type of engine, a lot of hassle with trying to solve leaks can be remedied with making sure both surfaces are flat.

Obviously there are times when certain bolts and gaskets need to be sealed with a specific sealant because they go into water jackets or due to the heat like exhaust manifolds, but making sure the surfaces are flat will solve a lot of headache surrounding leaks and make the type of sealant use LESS important.
 

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