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Calculating HP at the crank

Im just curious about whether there is any reason why this method isn't accurate. Let's say you do a baseline dyno and get 270 at the wheels. The crank hp

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		Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain
Calculating HP at the crank

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04-12-2012, 10:09 PM	#1 (permalink)
babbagandu Enthusiast Member Join Date: Mar 2011 Location: US Posts: 349 Drives: 09 Nismo Rep Power: 14	Calculating HP at the crank Im just curious about whether there is any reason why this method isn't accurate. Let's say you do a baseline dyno and get 270 at the wheels. The crank hp that Nissan claims for the Z is 332. So that means the crankhp/whp ratio for your car is 332/270 = 1.23 Then after all your mods let's say you dyno at 310. Would it then be accurate to assume your new crank hp is 310x1.23 = 381.3 ?

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