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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Convertion from Wheels Power to Engine



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      01-13-2008, 10:18 AM   #1
ThomasMartin
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Convertion from Wheels Power to Engine

Hey

Does anyone know the round about conversion from power on the wheels to engine output for the 335?

Thanks
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      01-13-2008, 10:20 AM   #2
Serjames
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12.8 % for manual

15 % for auto

Seems to give the right figures - SJ
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      01-13-2008, 10:25 AM   #3
ThomasMartin
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Quote:
Originally Posted by Serjames View Post
12.8 % for manual

15 % for auto

Seems to give the right figures - SJ
Thanks
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      01-13-2008, 10:28 AM   #4
ThomasMartin
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one more question

How would i convert WHP to KW.
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      01-13-2008, 10:33 AM   #5
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http://www.wentec.com/unipower/calculators/kw_hp.asp

not sure if that is imperial, metric, new HP or old, but it'll do for pub talk

SJ

p.s. keep you eye's peeled for dad's new db9, he's been poncing it around santon apparently, lol
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      01-13-2008, 11:21 AM   #6
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Don't forget to add another 10% or so for altitude losses.
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      01-13-2008, 11:24 AM   #7
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Quote:
Originally Posted by Serjames View Post
http://www.wentec.com/unipower/calculators/kw_hp.asp

not sure if that is imperial, metric, new HP or old, but it'll do for pub talk
Heh. Just to clarify, as a measure of work over time, horsepower is horsepower. There is no new and old for the units themselves (unlike things like USgallons vs imperial gallons), but rather the testing and reporting methods. Read more about it here: http://en.wikipedia.org/wiki/Horsepo...ower_.28bhp.29

But once you have a value of horsepower, you can convert to kW by multiplying by 0.746.
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      01-13-2008, 11:33 AM   #8
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1 kilowatt=1.341022 HP
1HP=.7456999 kilowatt
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