View Single Post
Old 07-09-2021, 12:48 PM   #22
alphasaur
friendly
 
Join Date: Oct 2018
Drives: 17' 86
Location: Dutchess County, NY
Posts: 725
Thanks: 1,461
Thanked 477 Times in 289 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by BrahmaBull1990 View Post
My peak TQ is 220 at 4926RPM and my WHP is 246 at 6687 RPM on the dyno

So the calculation for HP is (TQxRPM)/5252.

(220*4926)/5252= 206hp...seems odd, no? Maybe I am calculating this wrong haha
If you look at your chart, your car is making ~206hp at ~5k rpm. Torque and horsepower are related based on RPM.

I.e you can make 300lb ft at 3000rpm which comes out to 172hp at 3000rpm, then have timing/fueling/boost (for turbo) taper off and make 185lb/ft at 7500rpm and power will be 265whp. If you carry 300lb ft to 7500rpm HP will be 428hp. Do you see how they are related now?

For engine longevity it's generally rule of thumb to keep torque lower and flat in order to make power at higher RPMs. As stated, 185lb ft to 7500rpm is 265hp. Could you make way more torque down low? Sure, at the risk of your engine.

Some engines make obscene torque down low (my mazdaspeeds were ~380lb ft and ~320whp) but this is down to tuning and turbo size.
__________________
Seek comfort in discomfort.

Last edited by alphasaur; 07-09-2021 at 01:00 PM.
alphasaur is offline   Reply With Quote
The Following 2 Users Say Thank You to alphasaur For This Useful Post:
BrahmaBull1990 (07-09-2021), x808drifter (07-09-2021)