skiddusmarkus
Active Member
Or some louvres on behind the sparrow slicer on the hump.
Phil (Bracpan) fibreglass bonnet question
- Thread starter MarkTurbo
- Start date
Makaveli_se7en
Member
For me the other issue is the distance beween the radiator and the block/exhaust manifold. In an ideal world the scoop would draw the warm air from the radiator/intercooler out of the engine bay before it reaches the turbo. Unfortunately in our engine bays there is not enough room for this. So as result the scoop ends up drawing air over the manifold/turbo, effectively cooling them and reducing the energy in the exhaust gas; increasing lag and decreasing power. Lagging/coating of teh turbine housing and manifold can help to some extent but the turbo and manifold also interupt the air flow out of the engine bay. This is where MR/RWD owners seem to have it much easier.
skiddusmarkus
Active Member
I made this up from fibre glass, chicken wire and some domestic ducting, forces the air drawn into it right over my air filter instead of the manifold.
Outline of the bonnet has to stay the same, I get away with a smooth scoop as the side view is unaltered. I then have run it either blocked or I now feed air over to the air filter. (simular to the idea above) I also run my small vents with a lot more flow than the standard ones.
Den who runs in Mod Prod runs a normal sunny flat bonnet that I made as his rules alow this....to be honest we are getting off the point which is they are not going to blow open if you have it held by 2 bonnet pins...Simples.
Den who runs in Mod Prod runs a normal sunny flat bonnet that I made as his rules alow this....to be honest we are getting off the point which is they are not going to blow open if you have it held by 2 bonnet pins...Simples.
Last edited:
Thats something i'm looking at doing. At the moment my air filter is boxed off and fed from the inner wing but feeding it from the bonnet vent would give it maximum cool air.
skiddusmarkus
Active Member
They sure do, mine might look crap and not a patch on stuff people like Phil can make, but it works brilliantly and the filter is actually cold when you pop the bonnet after a run and feel it.Other peoples get really hot.
Dosen't matter what it looks like, i'd go for function over looks any day.
vss irvine
Well-Known Member
it basically comes down to, if its not lifted, your not driving fast enough.
topdoggtir
New Member
My cus has a custom grp bonnet, flaps a bit as well on the motorway at speeds of only 80mph +, got to 130mph once and backed off. The thought of it pulling up and smashing into the windscreen is scarey.
As you can see it has vents cut at front and rear.
Another option.
As you can see it has vents cut at front and rear.
Another option.
Last edited:
skiddusmarkus
Active Member
Phil does yous go into a cold air box or just onto the filter?I used to have it feeding a box but no room for it now so cardboard is filling in for now until I cba to make a better job of it.
That's the one Geoff has got... I think. - It goes in to the original bonnet, but scoops back instead of forward; that's why I was thinking you might be able to get away with it and still comply with tight class rules.
Makaveli_se7en
Member
STR bought his wings through RHD Japan.