I'm fairly new to the forums, so please don't be pissed when asking this question, did a search but didn't really find anything, maybe i'm not really sure how to search for this.

One thing I've always noticed was the hood vents on the EVO 8's. the hood vent is right on top of the exhaust manifold where water can get through. When you're running you're evo pretty hard (track, autoCross etc...) and it's raining would it be a good idea for water to be seaping through right ON TO the turbo and manifold when it's running that hot?

 

It has louvres that minimize the water seepage while allowing maximum heat dissipation. Unfortunately, some people remove the louvres thinkint that it looks cool and end up allowing water to get into the engine bay unabated. That, as you said, is not a good idea. I take out my louvres when at the drag strip, auto-x, or road course, then put it right back in. It requires no tools and takes just 3-4mins or so...

 

If the water gets in there anyway, what difference does it make?

 

Volume. There's a big difference between it seeping in slowly and gushing in unabated.

 

so keep it on when its raining and strip when its hot

 

I dont think so.

Fancy vocabulary aside, water is going to get in there either way.

If you're car is at a standstill in a downpour alot of water is going to get in there, vent in place or not.

 

ya that's exactly what i was thinking... and also another thing i was thinking was, if you get something like the AMS tubular manifold, that sucker would probably be glowing red after a good highway run or something, and with tons of water pouring on it when it's glowing like that, can't be good... thanks for the answer though

 

Man you know dick about physics. The only way to change the volume of flow, is to store it somewhere. Last I checked, there is no reservoir on there. The same amount of water flows through per minute whether the louvers are there or not. The only reason they are there is to hide the "ugly" engine.

 

What kind of rainstorm are you going to be in with "tons of water" to be pouring in? Are you going to be making hard runs in something like that?

A little rain on a red hot manifold is going to evaporate so fast it will have no effect. Any actual accounts of damage from rain on the mainfolds here?

 

unTake it easy killer. The manifold can crack from cooling too quickly... as in when a whole sh!tload of water is dumped on it. Thats physics too. Its called thermodynamics.

 

Oh well sure, if you go and pour a bucket of water over it. But even the heaviest rain storm isn't going to put that much water into that size hole. Again, any actual testimony? I've never heard any.

 

true.

 

true. but it could happen...

 

i'm not stating that it happened, if you read my first post, i am ASKING if i can happen. sure i've never heard of it happening, but i haven't been on the these forums long enough to know...


thanks for the input though.

 

doesn't take hard runs to get the turbo pretty red hot, just do a couple highway pulls and it'll probably get there.

i live in seattle, not tons of rain at a time, but we do get a lot of rain as everyone knows.