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Redline for a B20F? 140-160

posted by  Phil S. on  Wed Apr 27 08:37 CST 2005
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last visit: Fri Oct 24 13:18 CST 2014
[RELATED]

7000 RPM is about the safe limit for the stock rods in stock condition. Some racers using special rods and forged pistons run them up past 8500.

Peak power on a B20E/F is designed to be at 6000 (largely a function of the D cam), so I can definitely see shifting at 6500 so the next gear still lands you in a meaty part of the power curve.

There is something wrong with an engine -- or associated systems -- that feels like it's struggling at 4000, although it seems to be a common complaint.






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