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domtoni -> RE: New Supercharger for H3 - Wheel to Wheel Powertrain (10/11/2007 6:18:07 AM)
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Dr Olds, Thanks for your comments. I don’t claim to be an expert in supercharging or engine design, and my comments are how I see the application. The GM I5 3.5 and 3.7 liter motors, as applied in the H3, are a bit anemic (not my words) in standard form and the vehicle needs more umph to make it attractive. The idea behind supercharging an H3 is to make the car more driveable on a daily basis. The motor will work less, and fuel economy should (if driven without much boost) improve. To meet the new emissions requirements modern engines all have sophisticated engine management systems with knock sensors. Improved fuels also make for cleaner running and better combustion. Actually the supercharger does not make the engine more polluting . I understand your compression ratio comments for the I5 motor. But to clarify, Corvettes have been supercharged and they use 10.5 compression ratios. Wheel to Wheel have an excellent reputation and I believe their kit is very well engineered and executed. Only the supercharger has moving parts, so reliability of the kit should not suffer. I know some SC kits have been less than perfectly engineered, but look at the people behind the job. Hope that helps. Best Regards Dom
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