fastest supra - Toyota Nation Forum : Toyota Car and Truck Forums

madmax3208 · 08-12-2004, 02:09 PM

does anybody know what the fastest stock supra is jdm or usdm

BlitzNuRspec · 08-13-2004, 07:45 AM

jdm. By far. The Uk and US spec Supras were quite girly compared to the Jap spec RZ.

Jeeves · 08-23-2004, 01:23 PM

Actually, I would disagree.

The 2001 RZ (Uk Spec) was spec'd at: 272hp, and ~330ft-lbs of torque.
Compared to:
The 1998 US Spec MkIV at ~330hp, and ~330ft-lbs of torque.

Now, torque is the primary factor, but at the same time, the RZ was detuned slightly. While I've not done any reseach into it, I'd believe the VVTi in part to blame for the power loss. There has to be a reason no one wants VVTi motors to make power from, my guess? They're a pain in the azz to tune.

BlitzNuRspec · 08-23-2004, 04:26 PM

Quote:

Originally posted by Jeeves
Actually, I would disagree.

The 2001 RZ (Uk Spec) was spec'd at: 272hp, and ~330ft-lbs of torque.
Compared to:
The 1998 US Spec MkIV at ~330hp, and ~330ft-lbs of torque.

Now, torque is the primary factor, but at the same time, the RZ was detuned slightly. While I've not done any reseach into it, I'd believe the VVTi in part to blame for the power loss. There has to be a reason no one wants VVTi motors to make power from, my guess? They're a pain in the azz to tune.

There was no UK spec RZ. The RZ = Japanese spec Twin Turbo, 326bhp, 315lbs-ft of torque. The US spec was the same as the UK spec. The VVTi motor is actually 0.1 second quicker to 60, and 0.1 second quicker over the 1/4 mile. As for a pain to tune, the fastest Supra in the UK is a VVTi at 800bhp and 10.6 seconds.

Jeeves · 08-23-2004, 04:44 PM

Well, That's why I own a Mk3 and not a 4.

But, even then, that's not all that much... at least not enough to justify "The Uk and US spec Supras were quite girly compared to the Jap spec RZ."

Quote:

the fastest Supra in the UK is a VVTi at 800bhp and 10.6 seconds.

That's it?

BlitzNuRspec · 08-24-2004, 07:19 AM

Youre forgetting, Import tuning is a relatively new concept over here. The fastest cars are Skylines that run 9s, and Supras that should be running 8s/9s but cant get traction.

And I stand by my original statement. The US and UK specs are quite girly compared to the Jap spec RZ. 272bhp compared with 326bhp. Not to mention 60 in the late 5s early 6s compared with late 4s early 5s.

Jeeves · 08-24-2004, 10:58 AM

What are you saying came with only 272bhp? The USDM MkIV came with well over 300.

BlitzNuRspec · 08-24-2004, 11:45 AM

Actually, you stated the UK spec came with 272bhp. Considering the UK and US spec are exactly the same, I took your numbers.

Jeeves · 08-24-2004, 11:56 AM

I mean the other spec, I figured this :UK == RZ == JDM. I've been informed that this is incorrect by a friend who knows the Mk4's MUCH better than myself.

The USDM (Includes the UK appearantly) got 550cc injectors, steel turbos good to 450+hp, and a 'smarter' ECU while JDM cars had 440's and ceramic turbos.

[I got real numbers now]
USDM Mk4's debuted in 1993.5 with 325hp, while the JDM's debuted with 276hp.

So, by official numbers:
Rz = 276hp
US = 325hp

Yeah, the RZ (JDM) is definately stronger... sure...

As for high HP Mk4's, here's one... how does 1132rwhp sound? 1132rwhp MK4.

Jeeves · 08-27-2004, 02:09 AM

...?

BlitzNuRspec · 08-27-2004, 05:35 AM

Ben talking to a lot of guys at the MKIV owners club (including professional Supra tuners), they say the same as me. USDm and UKDM are the same car, with the exception that the UK got headlight washers and a bonnet scoop. The JDM is the most powerful, and the turbos are good for 1.2 bar.

Jeeves · 08-27-2004, 11:26 AM

Yes, I stated this. The UK is the same as the USDM. However, the RZ is not a UK Spec vehicle, it is JDM.

Also, the USDM specs were above that of the RZ by official documentation and unofficial. I'm waiting for you to post something other than "well, this guy says".

As for the turbos, 1.2 bar @ sea level ain't squat. I'm at 5280ft elevation and we've got several Mk4 TT'ers here, each hitting ~1.47bar.