Vented Bonnet (hood)

[apmitchell74]

Hi Guys,

I am looking at putting some form of vent in my bonnet, I am not sure what to do so i was hoping everyone could give me some idea's..
I want to use the car on the track more and i don't wont to cook or bbq everything under the bonnet...

http://www.bildon.com/catalog/SubCat/body/images/G5K_CFK_Hood.jpg

http://www.bildon.com/catalog/SubCat/body/images/G5K_CFK_Nose.jpg

This Bildon one is good but very expensive..

 

[Frenchie]

Looks the part for performance...

What about HPA.? didn't they have some type of Hood.?

Don't mind the CFK fenders....mean

 

[just_quietly]

I don't mind that at all.....I will give it the thumbs up. :thumbsup:

 

[funny]

What about straight panel beater job instead of prefab?

 

[amrjon]

You'd loose the sleeper factor!
How much difference to under bonnet temps would it actually make? do they make any claims?
If you thinking of it for actual ventilation vs. looks, I'd want to find out how effective it was first if possible.

 

[apmitchell74]

You'd loose the sleeper factor!
How much difference to under bonnet temps would it actually make? do they make any claims?
If you thinking of it for actual ventilation vs. looks, I'd want to find out how effective it was first if possible.

I am thinking of just having my bonnet modified and have a vent right above the turbo, they say that it will drop temps by 20% while driving.
I am not worried about the daily driving it's the track thrashing that's a killer on any car...

 

[Hilton_K]

Try these...

http://www.seiboncarbon.com/
http://www.seiboncarbon.com/pdut_detail_pic.asp?ItemID=703

or

http://www.osirdesign.com/

 

[James G]

Apparently seibon is awefull fittament, OSIR however i can vouch for, excellent quality products

 

[G-rig]

This Bildon one is good but very expensive..

I don't mind the look of that either, pretty tough :thumbsup:
(Almost looks like the myfast character from that angle).

 

[johno]

go for it. everyone knows the white devil ain't no sleeper.

 

[Maverick]

I am thinking of just having my bonnet modified and have a vent right above the turbo, they say that it will drop temps by 20% while driving.
I am not worried about the daily driving it's the track thrashing that's a killer on any car...

I can't find the link but I remember seeing something on lifting the back of the bonnet and the problems that it caused being an increase in under bonnet temperature, fumes sucked in through the air intake, and hot spots and it had something to do with the engine bay being designed to dump all the air out under the car and out the back.

Would an intake be better from that point of view rather than a vent? That way you have cold air coming in over the turbo and out under the car with the rest??

 

[gmc]

Any vent near the windscreen or lifting the rear of the bonnet will have negative effects due to the high pressure area where the windscreen joins the cowl. Extraction vents are usually located to the sides or in front of the 1/2 way point of the bonnet.

 

[G-rig]

Maybe a set of gills on the sides..

Doesn't look to be much room for a cold air intake with that HPA kit.

 

[Paul_OH]

Any vent near the windscreen or lifting the rear of the bonnet will have negative effects due to the high pressure area where the windscreen joins the cowl. Extraction vents are usually located to the sides or in front of the 1/2 way point of the bonnet.

Quoted for truth, these types of scoops were so effective as they relied on the high pressure area at the base of the windscreen (please excuse source material :biggrin

 

[Purg]

Go for a DIY job.