Highest recorded BHP for a Jap production car

[R1 GTR]

Gave this a bit of thought , in my eyes the Japenease seem to be the leaders in big BHP machines.
I'll start off: Top Secret Nissan Skyline, about 1200BHP
This isnt the exact car but very similar

[wadeski]

Japanese are wayyyy behind the Americans im afraid...no replacement for displacement.

(i.e. the japanese start off with a 3L engine with a HUGE turbo...the Americans start off with an 8 litre engine with same turbo).

Check out the 1-2000 rwhp tuner Vipers and Vettes around...not to mention the big block custom cars....

[R1 GTR]

Well it seems i was wrong for the first time in my life... oh wait thats wrong

[R1 GTR]

Anyway how about it then? 1200 to beat for Japenease

[Turbo T]

This is Ryan Woons Supra. Apparently it's RWHP.




There are higher rated Supras than this now in the US.

Edited by Turbo T on Wednesday 30th August 08:24

[Turbo T]

There you go

[_Batty_]

nothing until 6 finished @ 8.
and how big is that turbo
and how in fcuks name do they strap them down? or is it a hub RR?

[Mr E]

Jesus that car looks nasty to drive.

[Turbo T]

there is apparently a Supra that Dyno'd 1520 rwhp, but I don't have a dyno sheet, and without them I am wary of huge claims ( I am wary with them LOL). We all know people who claim to have 500+ on stock Supra turbo's or 400 from a Cossie with a n air filter & exhaust

[turbo-tastic]

Yeah there's a white "street legal" Supra running circa 1500bhp. No idea whether thats atw or atf but its s shed load of power, and it goes ike a rocket.

It was on ebay.com too a while back

[DazGTR]

R1 GTR said:

Gave this a bit of thought , in my eyes the Japenease seem to be the leaders in big BHP machines.
I'll start off: Top Secret Nissan Skyline, about 1200BHP
This isnt the exact car but very similar

I know the owner of that car ... and it's currently up for sale.

[vixpy1]

Any dynojet rwhp figure, take it as flywheel..

the overread horiffically

[vixpy1]

Gazboy said:

vixpy1 said:

Any dynojet rwhp figure, take it as flywheel..

the overread horiffically

I always thought this when people mention 500-700bhp Hyabusa's....

its generally why american figs are so much higher..

they all use dynojets

[Turbo T]

absolutely. The US RWHP figures generally equate to our flywheel (as do certain UK hub dyno's). I proved this to myself about 5 years ago when I had a supra engine on a proper engine dyno. The engine made almost exactly the same at the flywheel as a friend in the US with identical spec made at the wheels ( 690 @ 25 psi)

BTW, for all you guys hankering after huge power, the thing made almost 600ft/lb torque, and would light the wheels in 4th @ 100mph. Totally unusable. So next time you see and advert for an 800bhp Supra take it with a pinch of salt

[Turbo T]

yeah deffo, but they must be engineered. The TRD diff is a great help.

[slinky]

www.exvitermini.com

he he he

[zevans]

Gazboy said:

There must be a way of overcoming the traction issues- if Merc can do it with 700lbs/ft....

But the Merc is reined in to "only"" 700lbs/ft, partly because of those issues (and pinging bits of the gearbox through the floor I imagine.)

Should think that as part of that they've diddled the throttle map so you only get the full whack when the car knows you have grip.

Without all that trickery (for instance, in a 300ZX with a badly set up AVC, just to pick an example totally at random ) it's very easy to hit boost a bit earlier than you expect, whilst still unwinding lock on the way out, and very suddenly you're winding a lot of lock on... the other way.

Even the good ol' Audi R10 had a little power oversteer "moment" in practice, I notice, and that has race-spec traction control. I watched it 5 or 6 times on Sky+ and it was defintely a classic case of too much too soon on the way out of the chicane. Think it was Pirro driving at the time.

[GravelBen]

Traction control = gentle right foot



I imagine the foot would have to be extremely gentle when you have 400 more horsepower arriving over the course of about 200 revs though, like I've seen on some big-turbo dyno printouts

Edited by GravelBen on Tuesday 5th September 16:06

[MeLLoN Stu]

does this 4000bhp integra count? not quite original though but still 4 cylinders

www.turbomagazine.com/tech/0202tur_norwoods_racing_funnycar_integra/

Edited by MeLLoN Stu on Wednesday 6th September 03:33

[Turbo T]

Gazboy said:

That's my point- these hi-po jap cars are mapped to have the full moo in 1st, 2nd and 3rd- hell there is a video of a 900bhp Supra on drag tyres lighting up in 4th at 120mph on a Freeway- hell even a Fiat coupe is mapped to run less boost in 1st and 2nd straight from the crate. Can this not actually be done with £1500-2000 worth of stand alone Motec/AEM's/HKS EMS or is it horrendously/prohibitively expensive to do so?

yeah if your boost solenoid is controlled directly via the ecu you can select different amounts of boost in each gear as long as you have set the speeds up correctly. Also, if you use the Blitz SBC-ID & Performance Meter, you can use the speed map to alter the amount of boost in each gear. I think a few companies offer different solutions to this.