350z stock dyno sheet
#16
02-26-2003, 08:09 PM
Re: 350z stock dyno sheet
oh yea, now go throw in a k&n filter and see if you get another +6rwhp from it like that guy who did a k&n dyno did 
....i know in the 'stang i noticed 0 difference with a k&n, hope its different on here, i'd love +6rwhp from just a filter, heh
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....i know in the 'stang i noticed 0 difference with a k&n, hope its different on here, i'd love +6rwhp from just a filter, heh
www.ironpumping.com
^^Bodybuilding Made Simple
#17
02-26-2003, 08:16 PM
#18
02-26-2003, 09:55 PM
Re: 350z stock dyno sheet
um, call me stupid, but why are you dividing by .8?????? you should be multipling by .20-.25 (general accepted auto drivetrain loss)
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#19
02-27-2003, 12:22 AM
#20
02-27-2003, 01:40 AM
Re: 350z stock dyno sheet
your logic is confusing me 
you don't divide by 1- drivetrain loss %, you take the RWHP*drive train loss percentage- two different answeres
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you don't divide by 1- drivetrain loss %, you take the RWHP*drive train loss percentage- two different answeres
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#21
02-27-2003, 11:56 AM
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Re: 350z stock dyno sheet
99Alantic,
His formula is correct. You subtract the amount of drivetrain loss from the rated horsepower to arrive at brake horsepower. If you know brake horsepower then you divide by 1-drivetrain loss to arrive at rated horsepower.
Here is an example. The rated horsepower of the coupe is 280 and assuming a 20% driveline loss one would expect 224 brake horsepower [280 - (280*.20) = 224]
If you know that brake horsepower is 224 and assuming a 20% driveline loss you back into the rated horsepower using the formula as suggested [224 / (1-.20) = 280]
You can dispute the driveline loss but the formula is correct. In fact, if you believe the rated horsepower is correct then you can use the dyno numbers to calculate the driveline loss. The variables are the driveline loss and (supposedly the rated horsepower). No one knows how they achieved the rated horsepower rating (eg. no equipment attached to engine, ac compressor, etc. so it may not be comparable to your actual car).
His formula is correct. You subtract the amount of drivetrain loss from the rated horsepower to arrive at brake horsepower. If you know brake horsepower then you divide by 1-drivetrain loss to arrive at rated horsepower.
Here is an example. The rated horsepower of the coupe is 280 and assuming a 20% driveline loss one would expect 224 brake horsepower [280 - (280*.20) = 224]
If you know that brake horsepower is 224 and assuming a 20% driveline loss you back into the rated horsepower using the formula as suggested [224 / (1-.20) = 280]
You can dispute the driveline loss but the formula is correct. In fact, if you believe the rated horsepower is correct then you can use the dyno numbers to calculate the driveline loss. The variables are the driveline loss and (supposedly the rated horsepower). No one knows how they achieved the rated horsepower rating (eg. no equipment attached to engine, ac compressor, etc. so it may not be comparable to your actual car).
#22
02-27-2003, 12:21 PM
Re: 350z stock dyno sheet
Oooooh, i guess i've been doing it wrong all this time, hehe
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