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Bonnet Vents Help

SXCSKY

By SXCSKY,
in Exterior & Interior Styling

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Duncan Grand Master

Duncan

Posted
Posted

If you are looking for better cooling, check out this Autospeed article first:

http://www.autospeed.com/A_2159/cms/article.html

most bonnent vents will *increase* underbonnet temps.

Also for those raising the back of the bonnet that also does not assist cooling, check out this article:

http://www.autospeed.com/cms/A_1044/article.html

Properly designed kits placed in properly designed positions can improve things, but cutting a couple of holes in your bonnet will not help

  • 2 weeks later...
inark Grand Master

inark

Posted
Posted

true carbon fibre shatters on high impacts and is less likely to harm anyone u hit than fibre glass...

personally i think they would look gay... i would just get a glass one and paint it... should only cost about 250 to paint a bonnet not including the inside (no need to).

jaik Mentor

jaik

Posted
Posted

Heres 2 pics of the dodgy bonnet I did.

- http://www.innaloo.net/~jai/silvia/bonnet.jpg

- http://dgenr8.iinet.net.au/silvia/battle_bonnet.jpg

Basically it was illegal and I did consult the pits in WA about it. I did cut out part of the bonnet support, so the bonnet was a bit floppy. And they said the size of that vent would have been fine IF i ducted the vent soley to the radiator core. The Radiator cap and hoses could not be visible from the top of the vent, so it would have had to be totally sealed. But despite the main support being cut out, if I had strengthened around the vent to give it more rigidity it would have also been ok. The guys at the Pits discussed this with collegues for over an hour!

Also I will note, that from testing using the standard plastic intercooler plumbing on the CA18 Motor, with the vented bonnet the plastic was very cool, if not cold compared to the other intercooler plumbing in the car. With a normal bonnet on it was stinking hot. And yes, you could see a shitload of hot air escaping out of it.

I made the vent with an angle grinder and alot of glass and bog. It was a weekend job. Not sure if my Cefi is going to see the same treatment though :)

JK

  • 4 years later...
GTR-N1 Grand Master

GTR-N1

Posted
Posted

AN EXACT REPLICA OF THE R34 GT-R V-Spec II NACA Duct is AVAILABLE FROM

www.kenlowe.com.au in Qld> Raceglass composites > Bodies,Scoops > Scroll down to NACA Ducts 3"

This is an easy company to deal with.

It sits directly over the turbo and no bonnet-reinforcement needs to be cut away.

Mesh made by SAAS can be easily obtained from Autobarn etc.

GTR-N1 Grand Master

GTR-N1

Posted
Posted

^^^

I wonder what the Nissan R&D findings are, with regard to the single NACA Duct on the R34 GT-R VS II and the pair on the R35.

By the way, I am in the Cosmetic and Styling Mods section aren't I?

Oh yes.... yes I am!

GTR-N1 Grand Master

GTR-N1

Posted
Posted

^^^ hehe... Yep :P

The F/G one costs $45 + GST + Post = $62 to your door.

It can then be fitted from below the bonnet where it'll be moulded and where the hole is cut via a template.

It's OK to PM me with your E-mail for pics of the finished product!

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