Reducing heat under the bonnet

[DaveMack]

Anyone other than me who have thought about some sort of air duct in the bonnet to bleed hot air? (Or is it just the hot air I'm speaking? )

Dave

[99gti]

Hmmm - what ya got in mind Dave? If I see a wrx style scoop on your pogo I'm personally gonne jump on the next flight to brisvegas to amend it!

[Kai]

Turn your heater on full with the AC off and Outside air on.

[DaveMack]

Hmmm - what ya got in mind Dave? If I see a wrx style scoop on your pogo I'm personally gonne jump on the next flight to brisvegas to amend it!

No Neil ... nothin like that. Maybe one of those NACA ducts aircraft use (sillouette like the Concorde) ... V8 Supercars use em to get cold air into the car (centre, just above the windscreen).

Dave

[The_Hawk]

How about a mesh bonnet? Hell you can get a mesh everything else...

[Golfer]

You could try the wheel arch vents that Shaneth's polo is sporting behind the I/C, but on both sides? Perhaps that will increase airflow through the engine bay?

[Ben_GTI]

I've pondered this too. I though about cutting out some of the plastic in front of the windscreen with a dremmel. That way when at rest hot air should waft out from above the turbo.

A fair bit of heat comes out the front grill at standstill.

With cutting out the plastic, I've heard it is a high pressure area infront of the windscreen and so I think it may actually push cold air in the top of the motor once you're going at speed.

[h100vw]

No one has mentioned that VW has effectively sealed the bonnet to the scuttle panel with rubber, which then forces any air going into front of the car out underneath.

So I'd be inclined to leave it alone, after all they spend a lot of time developing stuff like that before releasing the car to the general public.

They also fit bigger radiators in cars shipped to hot climates.

Gavin

[Ben_GTI]

Well it is sealed to reduce engine noise.

My old car (mitsubishi Verada) has an extra row of rubber strips to make it quieter than a standard magna.

VW will want the cars quiet because it increases the appeal of the slow models. I mean imagine if you bought a Passat and it was noisy?

Just like my dads old xr6 hardly had any sealing around the bonnet... why I hear you ask? It is a standard Australian family car in the tight Australian car manufacturing scene. Save on cost and the standard buyer won't give a damn how noisy it is.

Edit: I would like more airflow across the firewall, it gets very warm infront..... mmmmm turbo.....

[BL33SU]

get an evo9 bonnet

[s1831559]

take the bonnet off...XD
dun think over heating is a problem for our pog. unless u r running a k04?

[DaveMack]

No ... I didn't say it was a problem ... it's just (I believe) the cooler it runs ... the better Kws it develops, am I right?

Dave

[rennenhaus]

I may have a solution for you Dave

http://forums.audiworld.com/tt/msgs/1574191.phtml

Have a look at the temp graphs, and the picture of the replacement gasket. Let me know what you think!

Cheers - ian

[DaveMack]

I may have a solution for you Dave

http://forums.audiworld.com/tt/msgs/1574191.phtml

Have a look at the temp graphs, and the picture of the replacement gasket. Let me know what you think!

Cheers - ian

Hmm ... that seems to suggest that the trim from the firewall could be reduced and allow more airflow through ... if I'm reading it right. Must check under the bonnet tomorrow.

Thanks for that, Ian.

Dave