Whp vs. Engine hp?

SeattleLion · 05-11-2011, 03:27 PM

Aside from the dyno itself, isn't whp affected by the tires? The tires have to transmit the energy to the dyno, so if the tires have a super high coeficient of friction, then the dyno will read higher whp than from a tire that is less slippery. Some of the bhp is lost as heat as the tires flex and slip.

Cmike2780 · 05-11-2011, 03:39 PM

Quote:

Originally Posted by SeattleLion

Aside from the dyno itself, isn't whp affected by the tires? The tires have to transmit the energy to the dyno, so if the tires have a super high coeficient of friction, then the dyno will read higher whp than from a tire that is less slippery. Some of the bhp is lost as heat as the tires flex and slip.

That's exacly why you have to have vehicle specific baseline readings. There are too many variables to do an dead-on accurate gains between two cars. The equation I posted are just approximations based on available data. We don't know for sure, for example, if the 350bhp is an accurate baseline @ the crank. Basically, we need at least three known values specific to the vehicle in question. For arguement sake, those values give you a rough idea.
....my brain hurts know.
Also, I think I just added to the stereotype about Asians being good at math.

Dizon248 · 05-11-2011, 03:47 PM

Quote:

Originally Posted by Cmike2780

That's exacly why you have to have vehicle specific baseline readings. There are too many variables to do an dead-on accurate gains between two cars. The equation I posted are just approximations based on available data. We don't know for sure, for example, if the 350bhp is an accurate baseline @ the crank. Basically, we need at least three known values specific to the vehicle in question. For arguement sake, those values give you a rough idea.

....my brain hurts know.

Also, did I think I just added to the stereotype about Asians being good at math.

Haha, I'm Asian too. Funny eh?

b1adesofcha0s · 05-11-2011, 04:05 PM

Quote:

Originally Posted by Dizon248

Haha, I'm Asian too. Funny eh?

+1 for the Asian crew, but I'm south Asian. Got here late to the math party

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05-11-2011, 03:27 PM	#1 (permalink)
SeattleLion Base Member Join Date: Sep 2010 Location: Seattle WA Posts: 226 Drives: '13 Mustang GT Prem. Rep Power: 234	Aside from the dyno itself, isn't whp affected by the tires? The tires have to transmit the energy to the dyno, so if the tires have a super high coeficient of friction, then the dyno will read higher whp than from a tire that is less slippery. Some of the bhp is lost as heat as the tires flex and slip.