I Went To The Dyno Today And Thay Just Gave Me The Rwhp Can Someone Tale Me How To Get The Fwhp And Fwtq I Dynoed At 257.2hp And 300.5 Tq Thanks

 

You would have had to ask them for it, I think most places charge extra to do both.

 

its something like you multiply hp and torque at the wheels by 1.1 to get flywheel horsepower. this is just a rough estimate as all engines are the same. so your would be:

282.92 hp
330.55 tq

i read it in this book that seemed fairly professional but again each car is different. i also saw some website that said something like X1.3 to get flywheel but that seems a little much to me. if anything i'll just ask my instructor in class tomorrow.

 

I REALLY dont think that is accurate, because it doesnt account for slippage, etc. It may have been a decent average, but i do not see how that is at all accurate.

 

Standard rule of thumb is approx. 20% loss @ the rear wheels with an auto, and approx. 15% loss with a manual.

These will vary depending on which tranny, which gears, wheels, tires, brakes, etc.

Those numbers are just a good general starting point. The only way to get truly accurate fly wheel numbers is to pull the motor and put it on an engine dyno.....not worth it if you ask me.

- Justin