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Hey all wanting to put a 'reverse' bonnet scoop on my GQ to pull hot air out around the turbo not force air in. I have seen alot of 'air in' bonnet scoops but not ones that drag air out - would anyone have some pics of info on how they have done theirs?
Thanks all.
Not much response and guessing not many people have done it here mate.
I can say I did this on my old xf which had a 351 short block Cleveland in it and along with thermo fans it made a huge difference. Especially at the lights it ran extremely hot but after putting in the reverse scoop along with the thermos it held the temp very well on hot days.
Never done it in a GQ though.
I think that I posted something about this sort of thing somewhere before but can't remember where, why not try raising the hinge part by adding about a 5mm spacer on the bolts that hold the hinges onto the bonnet, that will create a sort of straight though air flow.
Got this info from one of the members of the WPC (RobsGQ) and he swears by it.
I have 2 bonnet scoops on mine and have no over heating issues, so have not tried this mod.
Yep, pack the back hinges on the bonnet and lift it up will sort out your problem.
I have read that a reverse scoop may have implications for Road worthy as they allow the vision to be impaired should you have an oil line break of any description.
Have done both, used to lift the hinges and remove the rear rubber seal above the firewall in summer to help.
Have now put two reverse bonnet vents in to remove the heat - much better than the hinge option - much much better. Fun playing with the angle grinder as well.
I mounted mine at the back of the bonnet, one above the extractors and the other same settup near the battery. Find you don't get the ridicolous heat buildup with aircon on a hot day in traffic.
That said, only jsut starting to get into summer so will ahve to see. Got the vents off ebay for about $40. Will try and get some photos up shortly.
B
Pretty sure they will ping you with a yellow sticker for the modified hinges. Something about in a frontal impact the bonnet can be forced up into the windscreen easily.. Or something along those lines... (makes sense)
I had a turbo XF falcon and I used two GU patrol scoops fitted reverse. Over heating stopped and it looked good from the front as they are fairly low line design..
My 2 cents worth.
~Allan~
Yeah cheers guys, i will hav a look at this more closely when i can walk around. Will try a few things and see how they react with the temps.
Problem with lifting the rear of the bonnet or reverse air scoops is that, at lower speeds anyway, all that hot air from the engine bay is heading straight into your air vents. Reverse scoops won't suck air in under about 60kmh, I believe, so probably not much good unless your driving is mostly at highway speeds (with or without the highway). Perhaps you could paint your bonnet matt black instead.;)
They tried reverse scoops on aussie motor racing moons ago (XC /Torana era)
They were banned due to as mentioned above,
Any excess oil/whatever blows straght to the windscreen
There are height restrictions regarding bonnet scoops as well
What about heat bandage for the pipe work,or ceramic coating the pipes ???
Thatll help with excess engine bay heat
Hey just an update, put a GU scoop on in reverse, and put a sonic performance turbo beany on. That has significantly helped the engine bay temps. GU scoop looks the part too. Almost factory looking...