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I dont take credit for this, TTony wrote this up, I just copied and pasted it in. I am tired of hearing AND seeing Supras getting all the publicity and hype. HYPE thats exactly it is, Dont for one minute believe that our Z's are inferior in anyway to the Toyota Supra MK IV(im not going to trash talk about the appearance or anything i am just stating thr facts!!)
I dont need to give anyone the history about these two rivals.. it is well documented and old news. What i will say is before your mind starts pondering all kinds of thoughts let me just assure you. The VG30DETT is a stronger MOTOR than the 2JG-GTE period!!!
I know i know your probably thinking im full of it huh?
How could a V-6 be stronger than an inline 6? Well being Extremely familiar with both the Dyno and internals of both engines i have no doubt. See in simple terms just try to think logically here ok?
VG30- BORE/STROKE 3.43 X 3.27(Tip-1995 Bore a bit bigger)
2JG- BORE/STROKE 3.39 X 3.39
Alot of people dont know that our bore is larger!
and as you know that equals TORQUE
Where the Toyota loses bore and torque it makes it up in its inline design which is known to have more torque than the V configuration.
Now the design of the Intake Plenum should give you a hint of the superior thinking and design of Nissan.
Yes the Toyota is an inline-6 and cant have a dual plenum but that is the price you pay for being "The Japanese Copycat" and trying not to look to much like the Z.Toyota had to have a different engine just to separate itself from the Nissan which was designed and released in 1990 vs. 1993 and a half.(the half year was because the engineers had to go back to the drawing board due to the original design planned for 1993, that was scrapped and redesigned at the last minute to have better performance numbers than the Z.) Having the dual plenum is part of the dual inline 3 design.
(if you notice the Z is full of symetry from the engine down to the interior.) This benefits the engine greatly on the top-end rpm's as well as being very effecient.
This when combined with seperate dual turbos and true dual exaust demonstrates the powerband to great degree.
the Z is rated at 300@6400rpm(230 rwhp)283@3600rpm(95 model 245rwhp!)
The Supra 320@5600 315@4000.
Which powerband do you logically think is more of a top-end design? one that has its rated peak at 5600rpm or 6400rpm?
I know you read that the Supra is ALOT stronger by all magazines that are for the general public(Road and Track/MotorTrend/Car and Driver). They want you to believe that the Supra runs 0-60 4.6 and 1/4 mile 13.5@106.5mph.
And that the Z ONLY runs 0-60 5.5 1/4 mile 13.9@102mph? Now how do you figure a vehicle that has a Powerband that starts at 4000rpm with alot of lag and is geared with a 3.27 rear-end out accelerate a powerband that starts at 3600rpm with a quicker spool up and is geared with a deeper 3.69 rear end.
I know your saying but the Toyota has more boost 11.0psi vs 9.0psi and has 20more h.p.
Dont be so sure about these times..... Those of us who have been at the track can testify that even the 6spd models do not run NEAR those times and are really inconsistent.
As we have seen the Supra runs on the avg around 13.8-14.2@102-104mph.This is with 320hp and 11.0psi! The Z's run around the same times with ONLY 300 and 9.0psi Why?
Because the VG30 does not rely on so much boost due to the more effecient design(better inhailing and exhailing)and stronger motor. When modified you will notice that the Supra needs around 18psi of boost to achieve the same hp the Z does at 15-16psi.The only and i mean only reason the Supra has higher dyno numbers is simple its because of the stock 550cc injectors, which have more capacity than the 370cc Z injectors.They dont need very much to be strong all they need to do is crank the boost no fuel problems. The Z runs out of fuel capacity at around 350rwhp(420)This causes the Supra to surpass us sooner thats all. Dont be alarmed because all the Z owner needs to do(and should be considered mandatory)is upgrade those Damn injectors to 555cc. Then it is level playing ground no advantages!(the Toyota Turbos are not Significantly larger to overtake the Nissan engine design.)This is where The hype stops and the Facts are brought to light!!!
See for yourself take a 300ZX with all the basic mods and 555cc at 19psi . Now take a "BPU" Supra with 22psi and witness the theory in reality. The Z will run higher trap speeds with the stock turbos than will the Supra with stock turbos and 22psi.It has been proven time and time again!!! If you still dont believe me just take it from the Former Chief Editor for Motor Trend "In 1993 Toyota had been sending cheater samples to the media to get better performance numbers". I hope this shed some light on this matter that is long overdue. If you have any doubts the only way to prove them wrong is to sacrifice (1000-1500 dollars on 555cc injectors)
and prove to the media and racing scene that the Z has to be respected!! : I just wanted to know, why most supra's are faster then most Z, even w/ upgrades, supra's seem to go faster. : 2 RIP
My CarPuter Headquarters:
[ ashleypowers.com ]
agpowers@bellsouth.net |
16:57:19 10/12/01
