Gasket Assembly Question

[dipren443]

I am going to be installing my new timing cover tonight, then moving on with the rest of the engine assembly. I have a question for everyone. I am installing a Fel Pro 2335 timing cover gasket. It is rubber with a steel core and is a flat profile gasket. It didn't come with any instructions. Do I use any sort of silicone to assemble it? What about hylomar instead?

Curious to hear everyone's opinion. Thanks in advance!

68602

[Josh]

You can get 20 different opinions here. If you do not use RTV or similar to start with, you will have wished you did if it leaks.

[cornfedbill]

Have you checked the Felpro website?

With not other information, I would have to go with Josh. Use RTV now, or you will probably wish you did.

[Johnny Blaze]

I've always heard rubber should not get a sealer.

[nicks67camaro]

Hylomar is used in application where the gasket will see fuel. For a timing cover if you want to retain the use of the gasket you can use a gasket dressing like Ultra rubber gasket sealant and dressing. If you want to lose the gasket i would use Ultra black or the Right Stuff gasket maker (more expensive).


http://www.permatex.com/products/product-categories/gasketing/gasket-sealants/permatex-ultra-rubber-gasket-sealant-dressing-detail

http://www.permatex.com/products/product-categories/gasketing/gasket-makers/permatex--ultra-black--maximum-oil-resistance-rtv-silicone-gasket-maker-detail

http://www.permatex.com/products/product-categories/gasketing/gasket-makers/permatex--the-right-stuff--gasket-maker-detail

[dipren443]

Hylomar is used in application where the gasket will see fuel. For a timing cover if you want to retain the use of the gasket you can use a gasket dressing like Ultra rubber gasket sealant and dressing. If you want to lose the gasket i would use Ultra black or the Right Stuff gasket maker (more expensive).


http://www.permatex.com/products/product-categories/gasketing/gasket-sealants/permatex-ultra-rubber-gasket-sealant-dressing-detail

http://www.permatex.com/products/product-categories/gasketing/gasket-makers/permatex--ultra-black--maximum-oil-resistance-rtv-silicone-gasket-maker-detail

http://www.permatex.com/products/product-categories/gasketing/gasket-makers/permatex--the-right-stuff--gasket-maker-detail


Hylomar isn't as limited as you might think:

Hylomar Universal Blue can be used to seal joint faces or threaded parts. It is effective for sealing metal to metal and plastic to plastic. Typical applications include water & oil pumps, instrument inspection covers, cylinder heads, oil sumps, intake manifolds, timing case covers, gearbox & transmission housings and as a coating for pre-formed gaskets

[dipren443]

And I appreciate all of the replies. They are as diverse here as I have found searching the interwebz :doh:

[nicks67camaro]

Hylomar isn't as limited as you might think:

Hylomar Universal Blue can be used to seal joint faces or threaded parts. It is effective for sealing metal to metal and plastic to plastic. Typical applications include water & oil pumps, instrument inspection covers, cylinder heads, oil sumps, intake manifolds, timing case covers, gearbox & transmission housings and as a coating for pre-formed gaskets

I didn't mean limited I just meant to say it has some application specific properties vs a silicone gasket maker. A silicone based gasket maker is not formulated to see applications with fuel where as Hylomar is. If you're using a gasket you can use it with either the Hylomar or the gasket dressing. Or you can use the silicone gasket maker on its own. I bet you'll have equal success. One last comment would be since mixing and matching other companies parts i have found some irregularities with the surfaces where a RTV gasket maker on its own would help fill the gaps.