I have an Aerogear predator hood (looks like the abflud hood for supras) and it has vents that are right on top of the exhaust manifold. I've been driving with that hood for more than 2 years now and i have crap pace setter headers, so far there has been no signs of cracks or anything on the manifold and i know water falls on them as a simple fact. Question is once my turbo setup is in will water affect the mani/turbo housing? I don't want something small like water to **** up my setup.. but i also don't wanna sell the hood after i paid a lot of $$$ to buy and paint it... doesn't seem worth it to me to sell it and lose a few hundred bucks, then another few hundred on a new carbon fiber hood. But if it comes down to it and needs to be done i suppose i might as well.

Main question : Crap Pacesetter header did not crack, would turbo housing or love fab manifold crack?

 

the water would simply be boiled to vapor as soon as it make contact with the manifold, let me tell you this, the damn turbine housing is fu-king hot and my finger can tell you some story too =I

how much water is getting under the hood?
the vent is perfect to get rid of all the crazy hot gas tho'

 

3 pretty big vents, RIGHT on top of manifold. I just heard from a lotof people that water would crack the manifold... and like i said it left my pacesetter header alone. Also thinking about water getting on the wastegate etc. I'd post a pic, but my car is wayyyy too rice for Honda Tech.

 

lol

 

I wouldn't worry about the wastegate getting wet. The exhaust housing is pretty thick so I don't think the thermal change will affect it that much. The manifold on the other would worry me. You can always get the manifold covered with exhaust wrap or get a nice heat shield made for it.

 

If it's a cast iron turbo manifold, it'll hold up to cool water hitting it, a lot better than a tubular steel manifold, that is. I don't think it'll be a problem, as long as you don't dump like a bucket of water straight on it when it's hot.... (ie: don't hose down your car when washing it, right after a long drive...)

Also, remember that turbos/turbo manifolds will get hotter than standard headers. Maybe you could put some type of heat shield over the manifold, that will also protect it from getting water straight on it from above?

 

yea the heat sheild is a great idea. I was thinking of block off the vents sumhow.. but the heatsheild sounds more feasable. I am planning to go tubular but for now a cast iron log style manifold. I'll definetly check out some place i can bolt up a heat shield. Thanks for the info.

I obviously won't dump buckets of water, but this is my daily driver in florida weather. (Maddd rain)