jmo .
I've never used a sealer on any intake since I took an engine apart early in my career, and found a soggy buncha goop, that had been used to seal an intake.
My mentor explained never use silicon near fuel .
Let the gasket do it's job.
If the mating surfaces are clean and true, why use goop.
I've discovered silicon caused just about as many problems as it cures.
When those printoseal gskts came out, they were/are great, the cork end gaskets are thinner than regular, for use with aluminum manifolds, and DO work great when held in place with 3m weatherstrip adhesive, or other good contact cement.
Printoseals also trim nicely with an exacto knife for porting.
The only time I use rtv (Right Stuff now) is a pea size dab where gaskets meet. (Also oil pans).
That's it, dozens and dozens of engines, all breeds, over 50 yrs.
I warrantied all our work, if it had ever leaked, I wouldn't keep doing it.
Hope it helps, cheers .
