It gets silly hot in the engine bay when tracking the car. The only problem I got with it, so far, is that the throttle bodies starts to jam a little after long stints. But I got a feeling that things will break down sooner or later.
It looks like this is a standard problem and I have found many option on how to fix it. Extended roof scoop, side intake scoops, diffuser spacers, cut large holes where the numberplate is …
Any opinions on what is the easiest way to get the temperature down?
i think i would start with a service / new t bodie.
you could always try some nifty plumbing with an air duct, like a direct air feed to the area concerned. you can drill holes also behind the reversing and fog light. small scoops under the car pushing air into engine bay? may cause a parachute effect though.
diffuser spacers are cheap, simple to fit and reversible…
Most tracked S1 Exiges have cut away the number plate area or drilled holes in that area - you can see many different approaches - but it does reduce considerably the temperature as the hot air is sucked out.
Also diffuser spacers and cutting the false vents open - or putting holes in them also helps to have hot air sucked out.
I’ve always maintained that the correct way to deal with this is get the hot air OUT and it will then be replaced with cooler air from all directions.
I have fitted extractor vents to the engine cover.
[image]http://farm1.static.flickr.com/69/201026855_541d3c9725.jpg[/image]
These ‘suck’ hot air out of the engine bay when the car is moving (but make no difference when stuck in traffic). They certainly seem to help and no rain water gets in. I also have holes in the kamtail behind the number plate and reverse/rear fog lights.
cutting the false vents open
Been thinking about this. Does it help a lot?
Mike could you elaborate on the engine cover scoops.
Looks a very neat job.
Difuser spacers easily made with Broom handle slices approx 15 mm long .drilled and painted black/silver to choice…extra long s/s bolts from local fastener retailer.
Jobs done
Mike could you elaborate on the engine cover scoops.
Looks a very neat job.
http://www.demon-tweeks.co.uk/products/ProductDetail.asp?cls=MSPORT&pcode=ISA6902-0
Yes, Rob’s right. The vents are from Demon Tweaks. They are polycarbonate just like the cover so they ‘look’ about right… You simply cut 2 x 4" holes in the engine cover and then glue/screw the vents over the hole.I used clear bath sealant at the join.
I found that the ‘holes’ I cut out of the kam made perfect washers for diffuser spacers…
Rear number plate has to be the easiest.
Plate off, pipe cutter holes and then either put the plate back on with spacers (so the air can get out of the holes), or (like I did) attach the plate with velco so it’s easily off&on-able.
I can feel the difference in the cockpit with the plate off and engine is happier too.
Ian
Many opinions on this subject, looks like I’m not the only one
Open the fake vents and cut some holes behind the number plate sounds easy, and maybe some spacers for the diffuser.
Funny none has mentioned the roof-vent. The intake on the roof is placed on the middle of the roof, a place that on most cars is a low pressure zone. My layman aerodynamics knowledge tells me that extending the scoop all the way to the windscreen will make a very big difference on how much air is pushed in.
Holes on the rear of the car should, since its a low pressure zone there as well, help sucking out air from the engine bay.
![http://farm1.static.flickr.com/69/201026855_541d3c9725.jpg[/image]](http://farm1.static.flickr.com/69/201026855_541d3c9725.jpg%5B/image%5D){kind=link}