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| RPM limit https://vintagedirtbikeforums.alp-sys.com/viewtopic.php?f=21&t=1403 |
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| Author: | expat [ Wed Apr 04, 2007 1:20 am ] |
| Post subject: | RPM limit |
What is the max safe RPM limit for the '75 CR250 bottom end and piston? I am building a race engine and wonder to what safe max rpm to port time the engine to. |
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| Author: | Dave [ Wed Apr 04, 2007 7:15 am ] |
| Post subject: | |
these engines can turn 8500-9000 rpm stock.I would ask sam427 as he has been experimenting with a 75 model cr250M1 |
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