GT-4 Hoods and Rain Options

[Raine]

I feel pretty stupid asking this, but I tried searching and couldnt find any answers. Do you guys with GT-4 hoods drive in rain, and if so, do you do anything to stop rain from pouring into the grille on top of the hood? What would need to be protected inside the bay (5sfe)? The intake quickly comes to mind in order to prevent hydrolock.

[Defgeph]

Its usually so hot under the hood the heat evaporates the rain drops falling into the vent. You won't hydrolock your car by owning a GT4 hood. The vent is about a foot to a foot and a half away from where a short ram would sit.

[Drocay]

yup, rain doesnt effect anything.

[celiracer]

same on zyclone cf hood?? or washing the car? also was wondering same thing but this answered my question i think.

[lagos]

GT-4 Hoods and Rain/car wash = no problem at all

This post has been edited by lagos: Mar 19, 2006 - 11:49 PM

[Nampetch]

I feel pretty stupid asking this, but I tried searching and couldnt find any answers. Do you guys with GT-4 hoods drive in rain, and if so, do you do anything to stop rain from pouring into the grille on top of the hood? What would need to be protected inside the bay (5sfe)? The intake quickly comes to mind in order to prevent hydrolock.

Good question actually. From my experience with GT4 hood. I used to have a FRP sheet under the grille where some water, rain will be drained to fron of the engine. The reason this sheet is quiet improtant is it will help you avoid the water splashed too much to the dicharge, header and some area valve cover where spark plug and cable located.

If you can see the orginal GT4 hood, there will be a sheet protection under the grille like I told you....

[Raine]

I feel pretty stupid asking this, but I tried searching and couldnt find any answers. Do you guys with GT-4 hoods drive in rain, and if so, do you do anything to stop rain from pouring into the grille on top of the hood? What would need to be protected inside the bay (5sfe)? The intake quickly comes to mind in order to prevent hydrolock.

Good question actually. From my experience with GT4 hood. I used to have a FRP sheet under the grille where some water, rain will be drained to fron of the engine. The reason this sheet is quiet improtant is it will help you avoid the water splashed too much to the dicharge, header and some area valve cover where spark plug and cable located.

If you can see the orginal GT4 hood, there will be a sheet protection under the grille like I told you....

Yeah, I noticed that. On close-up shots of some people's hoods you can see a metal vent thing under the plastic grille. Is it a Toyota part, and if so, does anyone know the part number?

[Nampetch]

I feel pretty stupid asking this, but I tried searching and couldnt find any answers. Do you guys with GT-4 hoods drive in rain, and if so, do you do anything to stop rain from pouring into the grille on top of the hood? What would need to be protected inside the bay (5sfe)? The intake quickly comes to mind in order to prevent hydrolock.

Good question actually. From my experience with GT4 hood. I used to have a FRP sheet under the grille where some water, rain will be drained to fron of the engine. The reason this sheet is quiet improtant is it will help you avoid the water splashed too much to the dicharge, header and some area valve cover where spark plug and cable located.

If you can see the orginal GT4 hood, there will be a sheet protection under the grille like I told you....

Yeah, I noticed that. On close-up shots of some people's hoods you can see a metal vent thing under the plastic grille. Is it a Toyota part, and if so, does anyone know the part number?

I believed it is toyota part but I am forget the partnumber...
But be aware, some part from toyota that you may think it should not cost alot could be cost alot...

[urbandork]

I feel pretty stupid asking this, but I tried searching and couldnt find any answers. Do you guys with GT-4 hoods drive in rain, and if so, do you do anything to stop rain from pouring into the grille on top of the hood? What would need to be protected inside the bay (5sfe)? The intake quickly comes to mind in order to prevent hydrolock.

Good question actually. From my experience with GT4 hood. I used to have a FRP sheet under the grille where some water, rain will be drained to fron of the engine. The reason this sheet is quiet improtant is it will help you avoid the water splashed too much to the dicharge, header and some area valve cover where spark plug and cable located.

If you can see the orginal GT4 hood, there will be a sheet protection under the grille like I told you....

Yeah, I noticed that. On close-up shots of some people's hoods you can see a metal vent thing under the plastic grille. Is it a Toyota part, and if so, does anyone know the part number?

I believed it is toyota part but I am forget the partnumber...
But be aware, some part from toyota that you may think it should not cost alot could be cost alot...

its actually just a peice of plastic like material that acts as a rain gutter. It mounts to the hood via those plastic fire tab thingies.

ive seen the same thing on ebay but it was a single peice of sheet metal with vents cut into it.

[Mr_E]

If you can see the orginal GT4 hood, there will be a sheet protection under the grille like I told you....

Which is there for noise reasons and to also prevent the heat haze and steam when rain hits the manifold. This scares people a little.

I ripped it out. I want as much cooling as possible.

It rains a lot here, and I don't have a garage. No problems in the last 18 months.

[celicarus]

I also have a question similar to this. Those that have FMIC - is rain a big problem when driving?

[playr158]

FMIC + Rain = better cooling as the rain water will dissapate the heat off the intercooler

but my worry would be a manifold or sumthing cracking due to cold water/ hot manifold....?

[lagos]

FMIC + Rain = better cooling as the rain water will dissapate the heat off the intercooler

but my worry would be a manifold or sumthing cracking due to cold water/ hot manifold....?

there is no problem with the vent. nothing will crack because of it. it causes no problems to the motor at all.

[lilsteeg]

it wouldnt crack, inless you could get like half of the manifold to stay hot and the other half to be cooled way down, way down, this will make half of the manifld contract back to regular size with the other half expanded due to the high temp, and a crack would occour, but RAIN WILL NOT DO THIS not even forest gump's "big ol' fat rain"

[Drocay]

I also have a question similar to this. Those that have FMIC - is rain a big problem when driving?

That would suck if they did because point of having FMIC is for it to be as open as possible for maximum cooling.







ps. I havent had one of my friend yet complain about problems with there intercoolers in the rain.

[lilsteeg]

I also have a question similar to this. Those that have FMIC - is rain a big problem when driving?

That would suck if they did because point of having FMIC is for it to be as open as possible for maximum cooling.







ps. I havent had one of my friend yet complain about problems with there intercoolers in the rain.

no i believe that he wanted to know that since there is not hot intercooler in there, if the rain could get to the intake and cause hydrolock, i dont think that he was asking if rain on a fmic was bad

[scothaniel]

The stock heat sheild on the GT4 exhaust manifold would also pervent water from coming into direct contact with the manifold.

I was worried about the manifold cracking too, since I have a stainless tubular manifold that sits pretty close to the vent. Just last week it snowed here, and I could here the manifold sizzling after parking the car. So I just bent up and heat shield last night and will be installing it today. No more worries.

This post has been edited by scothaniel: Mar 27, 2006 - 2:04 PM

[MaX]

why would toyota put the vent on there if it's going to cause problems,

if you're putting an aftermarket GT4 scoop on, then you might consider getting a "gutter" for yours.....

but otherwise,

as everyone else said, there's no problems

[anubis0108]

it wouldnt crack, inless you could get like half of the manifold to stay hot and the other half to be cooled way down, way down, this will make half of the manifld contract back to regular size with the other half expanded due to the high temp, and a crack would occour, but RAIN WILL NOT DO THIS not even forest gump's "big ol' fat rain"

ya i thin you would definately have to drench your manifold in a very rapid rate to even begin to get it to crack it gets so hot that rain drops or even splashes would just evaporate. i think you would have to have water near freezing to do dmg.

[popstar]

Hey fella i asked the same question a year ago......

i put the gutter in for the winter, i think a load of snow at -20 will be a problem !!!!!

but rain and washing is not an issue

in fact it looks damn good when you get a nice heat haze in the summer

an a mate of mine was well impressed to see his turbo gloing after a long had drive