03-13-2010, 03:01 PM
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#1 (permalink)
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A True Z Fanatic
Join Date: May 2009
Location: E. Northport, NY
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Quote:
Originally Posted by Phimosis
Nearly stock torque #'s at low rpm is typical for centrifugal supercahrgers. The faster you spin them, the more boost they make. Positive displacement superchargers, on the other hand, reach maximum boost at roughly 1/3rd of maximum operating speed, meaning you have full boost at 2,500 engine rpm.
The torque curve that the GTM kit makes looks typical for a positive displacement supercharger and I'm amazed that they are getting that out of a centrifugal charger.
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Oh I'm aware of the TQ characteristics with a Centrifugal SC, but was just shocked to see such results from the GTM. Personally, I think the low end TQ would be more fun to have. I mean top end HP is great and all but when you are already at 400+ HP what's another 20 over some serious TQ 500-1000 RPM sooner in the powerband. Thats just my opinion though.
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