That's where 1/4 mile results settle all HP quote wars.
Try this gem. It's pretty accurate.
Horsepower = (Trap speed in mph, squared), (divided by ET in seconds), (times car weight in pounds), (divided by 1000), (divided by 9.1).
As an example, a 2100 lb. car which runs a 14.0 ET at 100 mph.
100 X 100 = 10000
10000 / 14 = 714.2.
714.2 X 2100 = 150000.
150000 / 1000 = 1500
1500 / 9.1 = 165 hp.
Horsepower is more related to trap speed than ET, try it.
If you drop the clutch at say 5000rpm at the line, you'll only post a marginally better trap speed than if you roll of the line, because you only loose a few metres.......sure your time will suck, but it's not as effective is you're trying to estimate power.
Also, if you test the car on a dyno at a 1:1 gear (usually 4th) you only loose approx 10-15 % power. It is crazy to hear people quote 200 hp at wheels = 250 hp at flywheel.
food for thought..........
dunc.
>From: "Pooley, Trevor" <[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED]
>To: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]>
>Subject: RE: Heath
>Date: Fri, 19 Oct 2001 14:28:00 +0930
>
>I agree Andy my 80kw L20B has beaten 150+Kw Z, FJ and SR turbos at winton.
>
>Cheers
>Trev
>
>-----Original Message-----
>From: Andy Nielsen [mailto:[EMAIL PROTECTED]]
>Sent: Friday, 19 October 2001 15:06
>To: [EMAIL PROTECTED]
>Subject: Re: Heath
>
>
>Horsepower is useless if you can't get it down.
>That's why times mean a shitload more than some dyno figure.
>My car did a 14.5 with an open diff and the cheapest tyres
>I could find for the roadworthy.
>My friend got his 1600 done on the same dyno just before me
>and registered 15 more rear wheel horsepower than me.
>He does consistent mid 12's. (With a locker and old slicks.)
>I'm more than happy with where I got my car dyno'd.
>But from now on I will be quoting times not hp.
>
>Andy
>
>
>
> >From: "Cleary Signs" <[EMAIL PROTECTED]>
> >Reply-To: [EMAIL PROTECTED]
> >To: <[EMAIL PROTECTED]>
> >Subject: Re: datto spotting - adelaide
> >Date: Fri, 19 Oct 2001 12:19:23 +1000
> >
> >not being rude Andy, but when are going to get it dynoed on a new
> >(accurate)
> >dyno?
> >all dyno dynamic dyno's in Aus are accurate australia wide
> >my mates old gemini had single SU turbo setup, motor made 220hp (flywheel),
> >he used to run 13.7s
> >
> >Heath
> >
> >----- Original Message -----
> >From: Andy Nielsen <[EMAIL PROTECTED]>
> >To: <[EMAIL PROTECTED]>
> >Sent: Friday, October 19, 2001 9:55 AM
> >Subject: Re: datto spotting - adelaide
> >
> >
> > > Justin,
> > >
> > > I'd say it is possible. I've nearly got that power out of my L20 and
> >I'm
> > > only running 6psi.
> > >
> > > Andy.
> > >
> > >
> > > >From: Justin Friedrichs <[EMAIL PROTECTED]>
> > > >Reply-To: [EMAIL PROTECTED]
> > > >To: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]>
> > > >Subject: datto spotting - adelaide
> > > >Date: Fri, 19 Oct 2001 08:53:22 +0930
> > > >
> > > >
> > > > I went to a blokes house in Morphettville last night and he had a
> > > >schmik 1600, tiger mica colour (commo style). It has a L20 with T3
> >turbo
> > > >sucking through a 50mm Weber. He reckons it had over 210KW at
> >flywheel!!!,
> > > >doubtfull but it was nice. Apparently he went to birdwood too. Only 17
> > > >years
> > > >old too!
> > > > Anyone know him, Zac possibly ????
> > > >
> > >
> > >
> > > _________________________________________________________________
> > > Get your FREE download of MSN Explorer at
> >http://explorer.msn.com/intl.asp
> > >
> >
>
>
>_________________________________________________________________
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