Quote:
Originally Posted by lwein
I have also felt the hot air that comes over the windscreen,it is from the heat of the radiators in the nose,and it is suprisingly hot.
I looked into fans a while ago,and the tiny fans that would fit don't come close to pulling enough air,pushing is not a good idea,either. the only place where fans might help on this car is when it is in traffic,but how much horsepower do you need in traffic? I am still thinking that a scoop on the drivers side "sail" panel(opp side of the fuel filler door)--or a NACA duct ---run into the stock air duct along with the roof might be the answer. It could be replaced with another gas filler door(screwed shut)if desired should the need arise. If you wanted to remove the top,you would still get air into the IC from the top scoop on the clam and the new sail panel air inlet. All of this is just mental masturbation on my part until somebody gets temps and meaningful data. Where is Jim Hall (Chaparral) when we need him?
|
I ordered 2 small motorcycle fans from SPAL to be mounted push inside the shroud. Just going to use a simple on off switch routed through the fire wall somewhere in the cock pit. I think the pre-IC shroud location provides a good vacuum seal aiding fan efficiency as opposed to fans in the open trying to pull air through. At idle standstill in street, or slow speed hairpins on track, this should help.
I know there are concerns that it would block airflow but in this case and it's just my own guess, since the bottleneck at the rear clam opening is so great, the fans can only help. At speeds, (cup roof) air rams through but is choked at the fettle location, my theory is the fans help pull that stream and push through the IC.
The fans I chose, if mount the way I want them to, on both sides will still leave a small open unobstructed IC space in the middle. Im no pressure engineer but imagine there's some turbulance on eighther side of the shroud, and the fans for the IC (for the exige config) can only help. I'm hoping innovate will come with the IAT parameter update soon so I can log this. I have some thermo couple but don't want to put these direct in the charge stream if dont have to...
On a seperate note, I wonder how much timing changes from the ecu are a result of IAT and how much are result of other parameters like ECT... ?