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Old 01-18-2006, 10:46 AM   #625
Grinder
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Quote:
Originally Posted by Ivan Dickson
Hey grinder,
I was wonder what is the difference in RPM or horsepower, stock vs modified cause I have a stock one. I interesting getting a modified one to race with.
I have not dyno tested the stock vs mod. I will soon. I can tell you the mod os is much faster than the stock one throughout the powerband.

aGeS1272....The mod TZ is almost as fast as the mod Novarossi engines. I notice the most difference at the end of a long straight. The Nova's seem to have more power higher in the rpm range, with similar bottom and midrange power. The Sirio has the most power up top. A short conical header really wakes the TZ up. I will have some dyno results with some hard figures sometime after Winternats in February.
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