Flywheel Bhp

[Chris.S]

Anyone know what my cars BHP is at the flywheel, just approx

[necromax]

Gord should have a rought idea having had his recently dyno'd

[TonyGoose]

Anyone know what my cars BHP is at the flywheel, just approx

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Should be a little over 200... 210 if you're lucky :)

[Chris.S]

210 at the flywheel

[TonyGoose]

210 at the flywheel

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affirmative B)

[Gord]

Anyone know what my cars BHP is at the flywheel, just approx

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chris mine has 214.2bhp at flywheel and thats 177 at the wheels, thats what it said on the print-out from the rolling road, this was taken from 3 runs. hope this has helped you.

[ColinBarber]

Official figure is 204 for a standard IS200 with just the SC

[Gord]

duncan had his done at 220bhp chris, but he has had the pre-cats removed, standard tte air box to. :P thats 2 now, over the standard 204 bhp, that i know of. :D :D anymore

[Bazza]

172.3 at the wheels :D

with standard airbox

[Dave-Ellen]

280 @ flywheel

380 with NOS

hopefully and soon....................need some money !!

[Bazza]

i would like to know how everyone has got the flywheel figures :o

as this is an almost impossible figure to accurately measure, without taking the engine out

i would suggest most figures are guessed !

so i guess mine is about 500bhp then :P

[ColinBarber]

dynos will just estimate the flywheel figure based on the power at the wheels minus the estimated drivetrain loss. More accurate for manual transmission than autos.

Also there is no guarantee that the dyno is actually calibrated to give correct at the wheel power in the first place.

[Bazza]

dynos will just estimate the flywheel figure based on the power at the wheels minus the estimated drivetrain loss. More accurate for manual transmission than autos.

Also there is no guarantee that the dyno is actually calibrated to give correct at the wheel power in the first place.

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how do they "estimate" the losses , surely must differ on each vehicle, and being front or rear wheel drive must make a difference

i was told that even tyre pressure will make a difference, and after a few runs the pressure changes due to the heat building up in them , obviously not on hub mounted dynos though

[Chris.S]

So with whats been done at mine, what you reckon it will be

[Gord]

So with whats been done at mine, what you reckon it will be

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i would say from 205bhp to 215bhp, have you still got the pre-cats in chris ? as i got 214bhp with them still in.

[Dave-Ellen]

It all depends,as barrie mentioned, on the air temp on the day,the dyno operator,cars condition............

[Chris.S]

No precats Gord

[Dave-Ellen]

would be more with my performance cat...........shuffles off !

[Gord]

No precats Gord

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well as the others say, depends on temp and all that, but i would think the top end chris, why dont you come with me when i have mine done again ? i think that most of the s/c will be pushing 210+bhp with the mods that you and i have, duncan got 220bhp, i got 214bhp not the same place or same day dont know the temp when duncan had his done, but it wasnt that cold when i had mine done, and i still have the cats in mine for the min. next mod i think :D

[Chris.S]

Dont want to dyno mine, dont want to risk blownin another engine

[aido]

Didn't think a dyno put any more stress on the engine than normal road use?

[Gord]

Didn't think a dyno put any more stress on the engine than normal road use?

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yep your right aido, they only do 3 or 4 runs, and they get the readings from 3rd or 4th gear.

[Bazza]

Didn't think a dyno put any more stress on the engine than normal road use?

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yeah but they take it over 50mph

[jasestu]

Didn't think a dyno put any more stress on the engine than normal road use?

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The main risk is from overheating isn't it? A couple of fans bowing on the front of the car don't always push as much air though as you'd be getting in reality at 180 km/h, so the engine can bake really quickly...