Heat Barrier Intake Manifold Gasket
#32
Evolving Member
Join Date: Sep 2007
Location: Saint Louis, MO. USA
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Erik, "If you build it, they will come", especially Milspec products.... Evo owners are funny like that, always looking for a way to make more HP. Keep us updated.
#34
Evolving Member
Join Date: Sep 2007
Location: Saint Louis, MO. USA
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Erik, do you feel the benifits for the mid level modified car will justify the expense? There are a lot of ways to make more power on these cars, will this one be cost effective enough to justify the R&D and the final cost of the product? I am interested!!
#36
Former Sponsor
iTrader: (94)
Personally, I don't do a lot of $$$ to hp benefit measurements. I mean, of course that is taken into account, but for the most part MIL.SPEC sets out to build the best parts possible. Oftentimes, the phrase "You pay for what you get" is true. If I were just looking to make a buck, I wouldn't do half the stuff I do LOL
We do not have any ready at the moment. I was distracted with other MIL.SPEC projects, and need to get back on our vendor who was supposed to get me samples but didn't. Way too many people are in business who drop the ball. lol Why is that?
We do not have any ready at the moment. I was distracted with other MIL.SPEC projects, and need to get back on our vendor who was supposed to get me samples but didn't. Way too many people are in business who drop the ball. lol Why is that?
#38
Evolving Member
iTrader: (2)
I had some made for my EVO after testing similar, heat barrier gaskets on DSM's. They are a little thick at a bit over 3/8 of an inch. But the temp diff of the plenum alone is over 25 degrees at idle. On the dyno, with the intake runners now effectively longer, saw 5-6 hp gain. Hard to say how much is due to the cooler intake. We repeatedly used the heat gun and took readings of three back to back runs before the gasket and after. You have to look around a bit to find some quality material to use for a phenolic spacer, "gasket". When I had them water cut, the owner asked where the hell I got such a big sheet and what it costs. Guess he had done similar items for some road racing teams.
#39
Evolved Member
iTrader: (49)
I have one of these gaskets plus a black thermal dispersant coating on my intake manifold (MAP Rev.3 manifold) and even after a hard autocross run I can pop my hood and the intake manifold is cool to the touch. Before the coating and barrier gasket it was burning hot and near impossible to hold your hand on it for more than a split second. I've had them both for about 11k miles now.
#41
Evolved Member
I've tried this and it was leaking by runner 2 and 3. Don't know about temp drop or power gain because I replaced it with OEM gasket.
#42
Evolved Member
iTrader: (38)
Still holing up with over 100k miles on the gasket and what like 10 years now. No leaks
It works as you couldn't put your hand on the IM with OEM gasket and can with the barrier piece. What it means for performance??? But the fact that the IM does not heat up as it does without it was a no brainer for me
It works as you couldn't put your hand on the IM with OEM gasket and can with the barrier piece. What it means for performance??? But the fact that the IM does not heat up as it does without it was a no brainer for me
#43
EvoM Guru
iTrader: (4)
Consider this: At WOT, your turbo is moving a lot of air through the intake manifold, and that air is moving very quickly. There isn't much opportunity for a hot intake manifold to transfer much heat to that air in the first place because the surface area is so low. Your intercooler, on the other hand, has a ton of surface area inside to maximize heat transfer between the air and metal.
So yes, keeping the last few inches of your intake manifold a few degrees cooler could theoretically reduce your intake charge temperature by a tiny amount, but the difference is so small that I doubt you'd find any appreciable performance differences.
Now on the other hand if you're going speed density and want to keep your IAT sensor from heat soaking at idle with little airflow through the intake manifold, one of these thermal barriers could be helpful.