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Dodgy dyno sheets

Posted: Thu Aug 16, 2012 8:10 am
by Stuart
This doesn't look right to me. For starters, I always thought that the torque curve and power curve were supposed to cross @ 5250rpm..........

Image

Any thoughts?

Posted: Thu Aug 16, 2012 9:17 am
by Rob S
That's what I thought, and assuming these people know what they're on about, this suggests the graph is wonky.

http://www.johnsonenginetechnology.com/ ... howto.html

Posted: Thu Aug 16, 2012 12:13 pm
by Danny@APT
Stuart wrote:This doesn't look right to me. For starters, I always thought that the torque curve and power curve were supposed to cross @ 5250rpm..........

Only if the power and torque axis are to the same scale (and using units of bhp and lb ft). ;)

Only had a quick look, but if you read up from approx 5252rpm along the bottom scale and check where it meets the power and torque curves, it seems about right- 150 bhp/150 lbft.