Thoughts on whether gaskets must be used on the front timing cover? It's two machined surfaces so I used silicone, now starting to second guess myself. If it was solid axle truck I wouldn't have a problem with silicone, but IFS is a real pain in the **** if it leaks after putting motor back in.

Thanks.

 

I don't think it's absolutely necessary just as long as you used some high quality gasket maker. When I did cylinder head gasket and timing chain on my 92 22RE 3.5 years ago, I did use the timing cover gaskets coated with Permatex High Tack on both sides. No leaks so far.

 

As I understand the set up, the "gasket" for the front cover is just a thin piece of paper. I would personally use a good RTV type gasket materiel.
That's just my opinion, though.

Pat☺

 

I've seen silicone used many times with out problems

 

Same here ,used thin coat of Rtv,tighten top bolt down through head first ,then the rest

 

Technic is important when using rtv for gaskets

 

I like using the factory paper gaskets with GasketCinch, But that's just my preference.
I think sealant should work fine as long as the surface is properly cleaned.

 

i just did the timing chain on my 20r and used the paper gasket with toyota fipg on either side.

 

That's reassuring, thanks for replies. Never had an issue with silicone but thought I would ask.