The reason I ask is because if I am going to do some mods to my S2 Exige, like having the forcefed turbo system I would like to know that I have some more airflow pushing the heat out of the engine bay.
I have a standard Exige and know that the airway through the roof is currently blocked and would need clearing for everything to work.
I don’t see how the airscoop on the Exige S can be that effective as it is. Or an I wrong on that.
With anything except the Lotus SC (which uses the roof intake for the intercooler) it is best to leave closed due to the negative effect on the airflow from the engine bay. Lotus did tests and found that the open engine cover allows the hot air to be pulled out into the low pressure behind the car. Opening the roof scoop just disrupts this
Mine is open but of little use. The heat in our kit (Bemani) is all around the SC and manifold. As they are tightly fitted between engine and frame. Increasing cooling in that area would not be a bad thing especially when you read about some of the issues with Honda powered cars and their chassis getting exposed to excess heat.
One day I would like to remove the oil coolers from the front and re fit them in the boot with gearbox oil cooler. Could use the roof to feed them and get a bit more air passing over the manifold and SC too.
If you were interested in the FF turbo kit and making the most of the roof scoop you could move the intercooler from the side pod and put it in the boot with a feed from the scoop. But you would have to lengthen the piping and this might have an effect on lag.
The extended roof scoop does create a bit of drag so you would need to make use of the feed. All the S1 boys are keen on them because the S1 have crap cooling when compared to the S2.
issues with Honda powered cars and their chassis getting exposed to excess heat.
But have you seen any evidence of problems with our set-up?
One day I would like to remove the oil coolers from the front and re fit them in the boot with gearbox oil cooler. Could use the roof to feed them and get a bit more air passing over the manifold and SC too.
Well, if you think the heat could be an issue… at the mo I’m working on the principle “If it ain’t broke, etc.” though maybe that’s also interpretable as “Head in the sand”!
The extended roof scoop does create a bit of drag so you would need to make use of the feed. All the S1 boys are keen on them because the S1 have crap cooling when compared to the S2.
Yep, more drag and more weight (not much but at the very top thus maximum worsening C of G). I would only go for it if it was really necessary � does look cool though!
Our setup definitely produces more heat (and power ) than any other Yota car and our set up looses the heat shielding on the manifold - the hottest part of the zaust if there were a problem it would be there.