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What's the difference between... #89447 Jan 23, 7:33pm Jan 23, 7:33pm
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What's the difference between...
HP and WHP?


Re: What's the difference between... [Re: beans] #89448 Jan 23, 7:36pm Jan 23, 7:36pm
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hp= horsepower to the crank/flywheel

whp= wheel horsepower, power directly from the wheels. there is a loss in power due to drivetrain.


rip celi...
95 240sx
Re: What's the difference between... [Re: element_celica] #89449 Jan 23, 8:55pm Jan 23, 8:55pm
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Originally Posted by element_celica
hp= horsepower to the crank/flywheel

whp= wheel horsepower, power directly from the wheels. there is a loss in power due to drivetrain.


yep...

whp is what you want to look at for best readings on the actual hp.


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Re: What's the difference between... [Re: element_celica] #89450 Jan 23, 9:50pm Jan 23, 9:50pm
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Originally Posted by element_celica
hp= horsepower to the crank/flywheel

whp= wheel horsepower, power directly from the wheels. there is a loss in power due to drivetrain.

Re: What's the difference between... [Re: element_celica] #89451 Jan 23, 9:52pm Jan 23, 9:52pm
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Originally Posted by element_celica
hp= horsepower to the crank/flywheel

whp= wheel horsepower, power directly from the wheels. there is a loss in power due to drivetrain.


true that


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Re: What's the difference between... [Re: element_celica] #89452 Jan 24, 12:12am Jan 24, 12:12am
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blackcel
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Originally Posted by element_celica
hp= horsepower to the crank/flywheel

whp= wheel horsepower, power directly from the wheels. there is a loss in power due to drivetrain.


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Re: What's the difference between... [Re: beans] #89453 Jan 24, 2:28am Jan 24, 2:28am
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as explained by the previous posters.
hp numbers are more while whp are less
for example celica gts hp is 180hp and approx 161whp

a good way to explain this is by comparing it with a price tag. lets say you find a shirt that says 19.95$ on it, but when you buy it you end up paying 22.32$ or whatever. the shirt is 19.95$ but actually you paid more than that. same with hp, its 180hp but actually the power you getting is 161whp

bad example but you should get the point by now

Re: What's the difference between... [Re: VSGTS14] #89454 Jan 24, 5:41am Jan 24, 5:41am
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Originally Posted by VSGTS14
Originally Posted by element_celica
hp= horsepower to the crank/flywheel

whp= wheel horsepower, power directly from the wheels. there is a loss in power due to drivetrain.


yep...

whp is what you want to look at for best readings on the actual hp.


ditto. you should definately pay more attention to whp than bhp.

and example would be the celica gts and the acura rsx-s. i've said this plenty of times already but i'll say it again:

factory rated horsepower (they use bhp, naturally) for the gts is 180 bhp. for the rsx-s, they get 200 bhp. so just by comparing these #'s you can assume the the rsx-s does a lot better than the gts because it has '20 more horses'. (just for the record, the rsx-s does put up VERY slightly better #'s than the gts, except in 0-100--which the celica is better.)

but anyway, when you dyno a car (dynos rate whp), you can see some dynos for the rsx-s will come out to 163 whp. dyno a celica gts and your average output will be about 160 whp.

so now, that '20 horsepower' is really only 3 horsepower--NOT a big difference.

bhp is what the engine is capable of producing without the friction of the drivetrain, etc.

whp is what's left after all that lost power is subtracted. hence, it is the better number to go with because it's actually what you get to drive around with. thumbsup

Re: What's the difference between... [Re: Speed4TheNeed] #89455 Jan 25, 1:20pm Jan 25, 1:20pm
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what's bhp?

Re: What's the difference between... [Re: beans] #89456 Jan 25, 1:38pm Jan 25, 1:38pm
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Originally Posted by beans
what's bhp?


as stated above. bhp is "horsepower at the crank". it's horsepower that the engine produces before friction of the drivetrain takes it toll and decreases this value to whp. thumbsup

Re: What's the difference between... [Re: beans] #89457 Jan 25, 2:20pm Jan 25, 2:20pm
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Now on to the PS...

Re: What's the difference between... [Re: Donegan] #89458 Jan 25, 4:29pm Jan 25, 4:29pm
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How do you find a place that runs dyno tests on your car in your town?

How much do they usually cost . . . so I don't get taken for a fool

sir that dyno test will cost you your left ball.

Re: What's the difference between... [Re: Donegan] #89459 Jan 25, 4:31pm Jan 25, 4:31pm
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Originally Posted by Donegan
Now on to the PS...


PS is what hp is over seas...idk how to convert it though.


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Re: What's the difference between... [Re: Donegan] #89460 Jan 25, 7:29pm Jan 25, 7:29pm
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Originally Posted by Donegan
Now on to the PS...


are you refering to psi??


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Re: What's the difference between... [Re: Xer0GT] #89461 Jan 25, 7:31pm Jan 25, 7:31pm
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Originally Posted by Xer0GT
Originally Posted by Donegan
Now on to the PS...


are you refering to psi??


no, ps is different from psi.

Re: What's the difference between... [Re: Speed4TheNeed] #89462 Jan 25, 7:33pm Jan 25, 7:33pm
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what's the b in bhp stand furr?

Re: What's the difference between... [Re: VSGTS14] #89463 Jan 25, 7:34pm Jan 25, 7:34pm
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Originally Posted by VSGTS14
Originally Posted by Donegan
Now on to the PS...


PS is what hp is over seas...idk how to convert it though.


PS to HP: online converter


1 PS = 0.986 HP thumbsup

Re: What's the difference between... [Re: beans] #89464 Jan 25, 7:36pm Jan 25, 7:36pm
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Originally Posted by beans
what's the b in bhp stand furr?


bhp = brake horsepower

Re: What's the difference between... [Re: Xer0GT] #89465 Jan 25, 9:22pm Jan 25, 9:22pm
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Originally Posted by Xer0GT

are you refering to psi??


No...

Re: What's the difference between... [Re: beans] #89466 Jan 25, 10:20pm Jan 25, 10:20pm
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Originally Posted by beans
what's the b in bhp stand furr?

BHP - Brake horsepower. A measurement standard used by manufacturers to help consumers compare engines. NOTE: BHP is measured at the maximum operating RPM of the engine, which may not be the RPM level at which your engine will provide maximum life and consistent performance.

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