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Joined: Dec 2004
Posts: 419
vcel523
Senior Member
vcel523 Jan 8, 9:04am - #368400 

Senior Member
2003 Toyota Celica GT

Joined: Dec 2004
Posts: 419
Los Angeles, California
whp vs. bhp

I know bhp is brake horsepower (or so I've read) but what is whp that everyone keeps using, and whats the difference?
Joined: Oct 2004
Posts: 32
tristie04
Member
tristie04 Jan 8, 9:43am - #368401 
2004 yellow Toyota Celica GT
Member
2004 Toyota Celica GT

Joined: Oct 2004
Posts: 32
San Fransico
wheel horse power
Joined: Sep 2003
Posts: 986
BReakinDrifTs
Senior Member
BReakinDrifTs Jan 8, 9:47am - #368402 
Senior Member

Joined: Sep 2003
Posts: 986
Valencia, CA
BHP= The amount of power your engine is making, before going through the parasitic process of going to the wheels, when car specs come from the factory, it's always BHP.

WHP= The true amount of horses that actually get to the wheels, this is rated after the power has gone from the engine and through the transmission.

For example Celica GTS comes from the factory with 180 BHP, the amount of hp that actually goes to the wheels is around 166 WHP (not sure on the number just an example.)
Joined: Jan 2004
Posts: 1,612
eric_h
2low2slow
eric_h Jan 8, 6:26pm - #368403 

2low2slow
2002 Toyota Celica GT

Joined: Jan 2004
Posts: 1,612
St.George, UT
good definition

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SLVCELI
Specialist
SLVCELI Jan 8, 6:44pm - #368404 
2002 Liquid Silver Metall Toyota Celica GT
Specialist
2002 Toyota Celica GT

Joined: Feb 2003
Posts: 1,304
West Chester, Ohio
Yeah automatic transmissions typically lose 20% thru drivetrain loss and manuals 15%. On the celica, (possibly cause of low torque??) the automatic appears to lose just over 20%.

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Posts: 6,372
Speed4TheNeed
Caleb
Speed4TheNeed Jan 8, 7:09pm - #368405 

Caleb
2000 Toyota Celica

Joined: Aug 2003
Posts: 6,372
New Orleans, LA
whp is much more important than bhp.

just as simplified version of what was already explained by breakindrifts:

bhp = horsepower at the flywheel (nothing attached to it such as the transmission).

whp = horsepower you are left with after everything is attached in a real-world scenario. what your engine actually puts out in your cars actual setup.

for instance, if you have two factory rated cars that are rated at 200 bhp and 180 bhp respextively you would think that 20 horses is a pretty big difference and may sway your buying power. however, if you put them both on the same dyno and they both registerred 160 whp, then they are actually equal (by power standings anyway).

the example i used is typical of the celica gts and acura rsx-s. powerwise they are both the same with none holding more than a 3 whp advantage usually. what makes the difference is weight (celica wins), 'lift' or 'v-tec starting engagement (rsx-s wins), and redline (rsx-s wins).
Joined: Dec 2004
Posts: 419
vcel523
Senior Member
vcel523 Jan 9, 1:44am - #368406 

Senior Member
2003 Toyota Celica GT

Joined: Dec 2004
Posts: 419
Los Angeles, California
Now that makes sense, I knew that even though my GT is rated at 140 bhp, that they don't put out that much. I thought it was just variations in engines, but now I know the real reason. man I love this site.
Joined: Aug 2003
Posts: 6,372
Speed4TheNeed
Caleb
Speed4TheNeed Jan 9, 5:35am - #368407 

Caleb
2000 Toyota Celica

Joined: Aug 2003
Posts: 6,372
New Orleans, LA
glad we could help wink thumbsup
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