bonnet vents
Author
Discussion

l4jor

Original Poster:

210 posts

224 months

Thursday 9th October 2008
quotequote all
Are there any kits out there that take cold air from the bonnet vents and duct it straight into the air box/filter for that Ram Air effect?
Last winter my engine bay was filthy with road grime and salt!!! I will block the vents up this year in case they are the culprit.
Another question ...will a Pontiac GTO exhaust fit a Monaro? its the center section that interests me if its a straight through pipe that is..from the cats back but keep the rear silencers..

ringram

14,701 posts

271 months

Thursday 9th October 2008
quotequote all
Yeah cat back should be the same.

jimb0

318 posts

252 months

Friday 10th October 2008
quotequote all
Thought the vents were in a low pressure area, so ram air couldn't be achieved from there. I'm sure there's stuff about it on ls1gto.com

L2VXR

1,005 posts

236 months

Friday 10th October 2008
quotequote all
Im not saying that they work but the bonnet vents a supposed to extract hot air from under the bonnet

S600VXR

5,877 posts

223 months

Friday 10th October 2008
quotequote all
How can they extract when they are forward facing.... rolleyes

The extra vents I have had stamped in draw air out as they are rear facing and I know they actually work. cool

Island boy HSV

726 posts

262 months

Friday 10th October 2008
quotequote all
What temperature differences are you seeing?

L2VXR

1,005 posts

236 months

Friday 10th October 2008
quotequote all
L2VXR said:
Im not saying that they work


As i said im not saying that they work but that they are called extractors so assume that they let out hot air when the car is stationary instead of letting it build up under the bonnet

racebreed

216 posts

211 months

Friday 10th October 2008
quotequote all
L2VXR said:
L2VXR said:
Im not saying that they work


As i said im not saying that they work but that they are called extractors so assume that they let out hot air when the car is stationary instead of letting it build up under the bonnet


hot air will rise within the engine bay and becuase the volume of air rushing past outside when at speed the inside air is likely to be at a lower pressure essentially heat transfer will take place

S600VXR

5,877 posts

223 months

Friday 10th October 2008
quotequote all
Original vents (nostels) will only allow heat out when stationary and even then not alot. Ive ripped out the plastic grills and now have smooth straight path into the engine (note the INTO bit not extraction!). The other vents I had put in will "extract" the air when stationary and more so when moving due to the pressure differences. As for how well they work... not measured the difference but the fans hardly cut in now and the oil pressure stays static all the time now regardless of how hard you drive it (think Ring driving!) where as before the engine was getting hot, fans were going and pressure dropped a little.

They look good to BTW. smokin

the muppet

669 posts

214 months

Friday 10th October 2008
quotequote all
S600VXR said:
Original vents (nostels) will only allow heat out when stationary and even then not alot. Ive ripped out the plastic grills and now have smooth straight path into the engine (note the INTO bit not extraction!). The other vents I had put in will "extract" the air when stationary and more so when moving due to the pressure differences. As for how well they work... not measured the difference but the fans hardly cut in now and the oil pressure stays static all the time now regardless of how hard you drive it (think Ring driving!) where as before the engine was getting hot, fans were going and pressure dropped a little.

They look good to BTW. smokin
Dumb question, but where are the pics of your vents please?

S600VXR

5,877 posts

223 months

Friday 10th October 2008
quotequote all
have a look at page 7 here. Cant remember where the other ones are of it. Black bonneted car.http://www.pistonheads.com/gassing/topic.asp?h=0&f=69&t=534167&i=120

global-i

368 posts

239 months

Friday 10th October 2008
quotequote all
S600VXR said:
have a look at page 7 here. Cant remember where the other ones are of it. Black bonneted car.www.pistonheads.com/gassing/topic.asp?h=0&f=69&t=534167&i=120

Nice Who did them for you?

S600VXR

5,877 posts

223 months

Friday 10th October 2008
quotequote all
Cool Louvers... they were situated in the middle of a huge Turkey farm of all places! Looked like a chop shop but the guy who did it is seriously talented with metal fabrication!

Afroman

155 posts

213 months

Saturday 11th October 2008
quotequote all
The hood scoops on my 06 GTO with the plugs out only let a little heat out, and the only real thing it does is make my engine bay filthy dirty. The have shaker hoods that are functional for the GTO/Monaro/Lumina SS. Yes the catbacks will swap.

tim the pool man

5,864 posts

240 months

Saturday 11th October 2008
quotequote all
l4jor said:
...will a Pontiac GTO exhaust fit a Monaro? its the center section that interests me if its a straight through pipe that is..from the cats back but keep the rear silencers..
Won't that depend on which model Monaro? If you have a V2 a twin system from a VZ won't fit, will it?

Magic919

14,165 posts

224 months

Saturday 11th October 2008
quotequote all
tim the pool man said:
l4jor said:
...will a Pontiac GTO exhaust fit a Monaro? its the center section that interests me if it's a straight through pipe that is..from the cats back but keep the rear silencers..
Won't that depend on which model Monaro? If you have a V2 a twin system from a VZ won't fit, will it?
OP mentioned notrils. In the UK we can generally assume that bonnet scoops means twin pipes too. Not foolproof, but pretty good rule of thumb.


tim the pool man

5,864 posts

240 months

Saturday 11th October 2008
quotequote all
Magic919 said:
tim the pool man said:
l4jor said:
...will a Pontiac GTO exhaust fit a Monaro? its the center section that interests me if it's a straight through pipe that is..from the cats back but keep the rear silencers..
Won't that depend on which model Monaro? If you have a V2 a twin system from a VZ won't fit, will it?
OP mentioned notrils. In the UK we can generally assume that bonnet scoops means twin pipes too. Not foolproof, but pretty good rule of thumb.
Ah yeah, missed that :doh!: