Just NOW a WOW. WTF, Just NOW 4 YEARS later. WTF, just now. No one noitced before this????

At this point in time, several years after the first post, I can state that silicone sealant is far superior to anything else, EXCEPT for any buggars that break off and plug up something. So if one is very careful and does not do anything that could result in a silicone buggar breaking off and plupping up something, one has a better sealed engine. Its just that bugger that is still the problem.

Silicone is the perfact gasket. Get preformed silicone gaskets, sans price, they are the best, period.

Form it your self silicone gaskets are up to the gods of gaskets. Do it right and you are GOD, do it wrong and you are the Devil. If you can do it without unwanted buggers forming, do it, otherwise use preformed gaskets.

RTV silicone is my least favorite sealant. In most applications in a 911 engine it is just plain wrong.

Some have other opinions.

Here's one guy who loves it. An expert ? some think so.

http://forums.pelicanparts.com/uploa...1172554830.jpg http://forums.pelicanparts.com/uploa...1172554847.jpg http://forums.pelicanparts.com/uploa...1172554859.jpg http://forums.pelicanparts.com/uploa...1172554872.jpg http://forums.pelicanparts.com/uploa...1172554886.jpg

too funny

(If you can do it without unwanted buggers forming,) I think you meant boogers LOL . Buggering has to do with something different than things that look like something from your nose

But couldn't one USE boogers as a proper sealant, provided of course, consistent thickness was maintained?

Seriously, I understand the silicone pre-formed gaskets to be superior under low torque, moderate heat, reusable applications (I am ordering some for under my valve covers). But I think I also understand that this material really has limited uses in the practical sealing up of a 911 engine. I would think the combination of heat and prolonged contact with petroleum products decidedly shortens the life span of the material (Not to mention it looks like crap smeared all over such elegantly designed mating surfaces such that you find on one of these engines).

I could be wrong though.

Henry has shown a perfact example of Moors Law. If a little is good, More is better. Done properly, you cannot tell what was used to seal the case, unless you tear it down. Silicone will last longer than any stock Porsche gasket. But whats the point? All Porsches leave their "mark", ie leak. Some a little, some a lot.

Let me be clear, what Henry posted is just plain nasty, even a vw or chevy guy would not do anything that bad. Must be a MM job.

Not MM. At least one member of this forum considers him an expert Porsche engine builder.
Perhaps Wanye would like to guess who built this mess.