Bonnet Vents

Post by **nekrum** » Tue Oct 27, 2009 2:02 pm

Done an initial enquiry with a firm that do road spec carbon bonnets (replication inside and out of original), for a group buy to avoid tooling costs we would be looking at £695+VAT for 5-10 or £595+VAT for 10+..

Post by **ecain63** » Tue Oct 27, 2009 2:55 pm

Daytona avant: Carbon bonnet (vented), Carbon Wrapped Roof, black optics, black tips and plus wheels. mmmmmmmm! Very dark!

Post by **ecain63** » Tue Oct 27, 2009 3:01 pm

MoRS6+ wrote:
Shoppinit wrote:You'd be pulling in hot air from the engine bay. Say goodbye to 50 horses!
Won't be doing that then!

I saw a conversion recently: B7 RS4 with RS6 engine. To get around the tight fit, in order to achieve proper induction a Subaru Legacy style vent was fitted to RS4's bonnet and two huge mushroom style filters fitted to the intakes and modifed so that they sat under underneath the vent. I think he had to have a modified carbon air box fitted which wouldnt be cheap. It was a bit Jap style (like you see on liners and supras) but it worked well apparently.

Post by **nekrum** » Tue Oct 27, 2009 4:10 pm

Pau1 wrote:Grizz was talking about getting some Bonnets made up a few months ago.

Would look good if they were pressed in like you used to get back in the day. Cool Louvre's was the name of the company back in my Nova days... lol http://www.coollouvres.com/

Found these on another forum, think this is what you mean?!.. Personally I think inward rather than the outward louvre's would look better - think the OE quattro look is the one to go for?!..

Getting back to my original question also, what would if any be the cooling benfit?!..

Post by **Shoppinit** » Tue Oct 27, 2009 4:28 pm

Much more discrete. I also would have thought they'd press the grooves in. Maybe having them that way helps extract the air from the engine bay, but the venturi effect should work either way.

Post by **ecain63** » Tue Oct 27, 2009 6:37 pm

From what we applied when doing the track 205:

Backward facing grooves over the rear of the bonnet will let out heat from engine, manifold etc. Forward facing grooves at the front will let cold air in over the intake and top of the radiator and will also force heat out from the rear.

205 vents from the top. Forward facing is front passenger side of bonnet. All others are rear facing

From the underside

And one of the car lol

Post by **ecain63** » Tue Oct 27, 2009 6:38 pm

Also, inward pressed louvres will let in more rain which is a point to be taken seriously IMO, as will forward facing ones when on the road i suppose.

Post by **tartan_rob** » Tue Oct 27, 2009 7:36 pm

Or for induction noise, much better cooling, more power, faster spool up (almost immediate at speed) and in making servicing easier, do this....

Post by **Shoppinit** » Tue Oct 27, 2009 7:38 pm

Where are the air filters? In the fat pipes?

Post by **ecain63** » Tue Oct 27, 2009 7:49 pm

Nice. Are those pipes flexible?

Post by **pete2144** » Tue Oct 27, 2009 8:06 pm

GregR1 wrote:Sure there's a guy on here that's vented his bonnet for hillclimbs...

Yeah I've got vents done by Cool louvers, a while ago now, looks good and the sound is awesome

.
Picture not very good was taken on my phone!

Post by **tartan_rob** » Wed Oct 28, 2009 3:36 pm

Shoppinit wrote: Where are the air filters? In the fat pipes?

High flow filters in the pipes. Flows lots of air, it uses modified widened scoops, to std accordion pipes into the carbon pipes which reduces into rubber 90deg bends straight onto the MAF's.

Post by **Shoppinit** » Wed Oct 28, 2009 3:57 pm

Insane! Love it!

Post by **Daveperc** » Wed Oct 28, 2009 4:29 pm

Hi Rob

Love the air system - done by MRC I think you said in an earlier post. As a matter of interest what do you reckon your beast with WI and the full bore Milltek is putting out? And how much roughly was the WI and the air intake mods??

Dave

Post by **andyt** » Wed Oct 28, 2009 6:07 pm

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Bonnet Vents

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