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Old 06-08-2013, 10:42 AM
Snake2998 Snake2998 is offline
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Join Date: Oct 2007
Location: Cape Town, WC
Cobra Make, Engine: Shamrock
Posts: 418
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Default Lifting the hood for speed runs and track use - a good or bad thing?

I have wondered whether it is advantageous to lift the rear of the hood (Bonnet) on the Cobra to relieve under bonnet temperatures and pressure and hence draw cooler air into the carb and reduce nose lifting at speed.

Older threads on here discussed it but never really came to any conclusion - I quiet like the look if not lifted more than 2" and have noticed a huge amount of hot air coming out of there at lowish speeds (under 50 mph) but wonder if anybody has done any before and after testing at high speed.

Would think it would get the forward facing scoop working better as well as reduce the high pressure area in front of the windscreen and possibly improve air flow over it and also keep engine temp down and help reduce heat soak at end of laps helping you pull a lot more heat out of the whole system on the cool down lap.

With all these potential benefits why don't more people do this very simple mod on track days?
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