500hp in a roadster you would have a hell of a time getting it to the ground
-----Original Message-----
From: sidney raper [mailto:spl310@hotmail.com]
Sent: Tuesday, June 05, 2001 11:02 AM
To: csp311@telia.com; DemonTSi@aol.com; datsun-roadsters@autox.team.net
Subject: Re: FJ20 conversion?
Hmmmmm.....Interesting. I guess that the old addage comes to mind in this
instance "There's no replacement for displacement" Stuff a big block in
there (I dunno the numbers for GMs and Mopars) like a Ford 427 side oiler
with a brace of 4 weber IDAs, full race cam, headers into side pipes and you
can beat the 500 hp number. Of course, the frame will twist into a pretzle
after you dump the clutch a few times....
Sid
>From: Thomas - Sweden <csp311@telia.com>
>Reply-To: Thomas - Sweden <csp311@telia.com>
>To: DemonTSi@aol.com, datsun-roadsters@autox.team.net
>Subject: Re: FJ20 conversion?
>Date: Tue, 05 Jun 2001 13:16:59 +0200
>
>A few things to check if it's riceboy power or
>accurate figures. Most numbers are rounded off.
>
>500 hp at the wheels would require an airflow
>about 2000 kg/hr. of air into the engine.
>
>500 hp at the wheels would require minimum
>of four 650 cc injectors.
>
>500 hp at the wheels would require a Garret T04BB
>with T76 trim running at ~30 psi or any other turbo
>with equal flow capacity for 75% efficiency.
>
>500 hp at the wheels at 6500 rpm is 540 Nm at the
>same rpm. SR20DET peak torque with bolt-on
>aftermarket parts is somewhere around 4000 rpm
>where 2/3 of max. hp is reasonable to expect
>for a daily driven car. 340 hp/4000 rpm is 598 Nm.
>
>So I searched for engines with similar power
>output.
>
>Nissan R390 GT1 have a 3495 cc V8 with twin
>turbos. 550 hp/6800 rpm and 637 Nm/4400 rpm
>Let's say the drivetrain use 10% of the flywheel
>power. That give us 495 hp and 573 Nm at the
>wheels. This is the car Nissan built for the 24 hour
>LeMans race 1998-99. 0-60 mph in 3.9 seconds
>and 1/4 mile 11.9 seconds.
>
>An SR20DE (non-turbo) touring car racing engine
>makes 320 hp/8500 rpm. This engine can not
>be driven on the street as it will die below 4000 rpm.
>
>Last example. Nissan Skyline GT-R Blitz racing car.
>2750 cc inline six. 850 hp/9300 rpm and 961 Nm
>at 7500 rpm. Let's say the drivetrain use 10% of
>the flywheel power on this too. That give us 765 hp
>and 865 Nm at the wheels. I dont think this one can
>be used as a daily driver by looking at the rpm where
>the power is available.
>
>Porsche 911 RS-2, 3600 cc with 462 hp/5700 rpm
>and 620 Nm/3500 rpm with 28 psi boost pressure
>is not close enough. Reduce the power with 10%
>to compare with the others. 416 hp & 558 Nm.
>So it's back to the drawing board for Porsche.
>
>Thomas
>
>
>DemonTSi@aol.com wrote:
>
> > In a message dated 06/04/2001 6:29:48 PM Pacific Daylight Time,
> > adfox@iprimus.com.au writes:
> >
> > > Although not
> > > quite as capable of being worked for outright power, the SR20det would
>be a
> > >
> >
> > Hmm, I'd have to argue with that point.. I've got a few friends putting
>out
> > near 400hp to the wheels on their turbocharged SR20DEs (mind you, these
> > started out as high-compression, non-turbo motors!!). This is with
>completely
> > stock internals, and just bolt on upgrades. Folks with mildly-built
>(i.e.
> > forged pistons, but everything else stock) SR20s are putting out around
>500hp
> > to the wheels. These are all daily driven cars too...still boggles my
>mind.
> >
> > \/ /\ /\/
> > www.sr20parts.com - updated 5.28.01
> > Ares Engineering - coming soon(er or later)
>
>
>
>--
><><><><><><><><><><><>
> Thomas in Sweden
> Nissan Silvia #319
> Nissan Silvia #293
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