Whats the fastest. A 300zx? A GTO or a Supra twin turbo. Or the top skyline. Also why do you guys think the 300zx is better than supras, GTO's ect ect. I really just prefer the look of the Z myself. It really does look powerful, where as a supra looks cheep looking and the GTO well Im just not keen on that. And skylines and Evo's and scoobies simply look like famliy cars gone. So come on explain to me why the 300zx is the best out of the big jab supercars?

I hear this quoted many times about the Supra being reliable. Will this not be down too (even in part) being newer. Therefore less wear and tear!.

 

Staight 6 is a less complicated lump so less to go wrong, but because its such a long high lump thats why the supra is so ugly. + Also same apply's to the skyline. Though the R34 isn't too bad looking for a huge saloon car ( easily as long as a BMW 7series)

The zed has a much more efficient engine than the supra. Boost for boost the zed will push much higher bhp. At 9psi with 370cc injetors you get 300bhp from a zed. At 12psi with 550 injectors you get 320bhp from the supra.

Put 550's and raise the boost to 12psi on a zed and your looking at around 350bhp at fly.

The zed has a much more efficient engine than the supra. Boost for boost the zed will push much higher bhp. At 9psi with 370cc injetors you get 300bhp from a zed. At 12psi with 550 injectors you get 320bhp from the supra.

Put 550's and raise the boost to 12psi on a zed and your looking at around 350bhp at fly.

 

I'm afraid that's not true. Standard Z's make 280 HP, and only the later US market cars made around 300 horses.

 

As for the boost issue, US spec supras are known to make 300 rwhp (360 HP flywheel) standard, and have the dynos and performance figures to back it up. They tend to run very rich at WOT so they tend to lose power. The 2JZ is a very powerful engine that responds so well to mods if they are tuned right.

Whats the fastest. A 300zx? A GTO or a Supra twin turbo. Or the top skyline.

 

Supra TT

I'm afraid that's not true. Standard Z's make 280 HP, and only the later US market cars made around 300 horses.

 

As for the boost issue, US spec supras are known to make 300 rwhp (360 HP flywheel) standard, and have the dynos and performance figures to back it up. They tend to run very rich at WOT so they tend to lose power. The 2JZ is a very powerful engine that responds so well to mods if they are tuned right.

 

Standard zeds make 300bhp take a look at the specs http://www.scuderiaciriani.com/rx7/magazine_articles/Motor_Trend_article01.html

Jap supraTT make 280bhp at fly.

I have never seen the dyno reports to back up your claimed "360bhp" for the UK spec supra, can you find them out for me? Sounds like another myth.

Standard zeds make 300bhp take a look at the specs http://www.scuderiaciriani.com/rx7/magazine_articles/Motor_Trend_article01.html

Jap supraTT make 280bhp at fly.

I have never seen the dyno reports to back up your claimed "360bhp" for the UK spec supra, can you find them out for me? Sounds like another myth.

 

I think he said US Spec...but then we all know about inflated american power claims.

If speed is all you want, put a rocket engine in a Daihatsu and beat everybody. But if you want to cruise around with a bit of comfort and style (and a good amount of power) - the Z wins every time.

 

Out here is Australia, the young guns have all gone WRX and GTR crazy just like over there. As far as I am concerned, it all adds to the mystique and exclusivity of the Z, and the discerning few who are privileged to drive them.

 

Another strange trend over here for the pre-pubescent brigade is to lower the drivers seat so they can drive around looking through the steering wheel rather than over it. Why they prefer that is a mystery to me, especially when the police can (and do) issue a negligent driving charge and attach a defect notice to the car if they catch you.

 

B

Standard zeds make 300bhp take a look at the specs http://www.scuderiaciriani.com/rx7/magazine_articles/Motor_Trend_article01.html

Jap supraTT make 280bhp at fly.

I have never seen the dyno reports to back up your claimed "360bhp" for the UK spec supra, can you find them out for me? Sounds like another myth.

 

Only the US market ZX's made 300 Horsepower, the early ones made 280, and performed like it too. I have seen 4 different road tests for the ZX from 1990 - 1995 and there is a difference in performance.

 

The UK ZX road tests I have read, (and I posted the figures in another thread here) are very close to the early 280 hp 1990-1993 models.

 

The US spec Supras easily make 300 rwhp standard, it is well established and you can easily access the dynos from supraforums. Take a look at the acceleration times and 1/4 trap speeds of the US spec supras and they well prove over the years that they make more than the rated power.

 

This isn't really a suprise, as standard boost is 11.5 psi, the combined flow of the toyota turbos is marginally superior to the garretts on the 300zx. There is no significant gap in "effiecy" between the 2 engines. People are just confused with the misleading horsepower ratings released by the manufacturer.

Dynos do vary and US ones tend to be more 'generous' IMHO.

I think he said US Spec...but then we all know about inflated american power claims.

 

That's a bit ignorant. The SAE standard of rating horsepower is more stringent than the euro DIN. That means what is rated 300 hp here, is actually 295 in SAE.

 

A few real life examples:

 

The BMW M3 DIN: 340 PS, US is 333 HP

Ferrari 360 Modena: 400 HP, US is 395 HP

Porsche 996 Turbo: 420 HP, US is 415 HP

Dynos do vary and US ones tend to be more 'generous' IMHO.

 

Read my previous posts, the American hp rating system are more stringent. I don't know where you come up with the assumption that they exagerate HP ratings.

 

I think here in the UK we are the most guilty of that. Too many 400 HP Scoobies and Cossies with standard turbos flying around.

Looks like the beginning of a fight! And you all seem to be overlooking the importance of colour. Black being the most powerfull, followed by red.

Read my previous posts, the American hp rating system are more stringent. I don't know where you come up with the assumption that they exagerate HP ratings.

 

I think here in the UK we are the most guilty of that. Too many 400 HP Scoobies and Cossies with standard turbos flying around.

 

My work sees me using lots and lots of dynos. The same vehicle will record different figures on all of them even when compensated for conditions.

American ones do seem to be more generous.

Anyway back to the original question "Whats the fastest. A 300zx? A GTO or a Supra twin turbo. Or the top skyline" Click here for the answer http://www.junauto.co.jp/democar/jb-z32/index.html?en

That's a bit ignorant. The SAE standard of rating horsepower is more stringent than the euro DIN. That means what is rated 300 hp here, is actually 295 in SAE.

 

A few real life examples:

 

The BMW M3 DIN: 340 PS, US is 333 HP

Ferrari 360 Modena: 400 HP, US is 395 HP

Porsche 996 Turbo: 420 HP, US is 415 HP

 

The "inflated" american HP claims quote was becuase all to often we see two similar spec modified Zed's on each side of the pond claiming very differnet power outputs. Like 800bhp in the U.S....600bhp here.

My work sees me using lots and lots of dynos. The same vehicle will record different figures on all of them even when compensated for conditions.

American ones do seem to be more generous.

 

How can they be more generious if it was SAE corrected? When you correct a dyno rear-wheel hp (not est flywheel, and not hub hp) figure to SAE standards, the figure goes down not up.

 

The only scenerio where a SAE corrected figure is higher than an un-corrected one is if ambient temperatures were say 95+ degrees F and ran well above sea level, which can often happen in America. SAE is around 76 degrees F.

The "inflated" american HP claims quote was becuase all to often we see two similar spec modified Zed's on each side of the pond claiming very differnet power outputs. Like 800bhp in the U.S....600bhp here.

 

a lot of this is down to the US guys using Race fuel when dynoing to hit peak figures. You'll find their 'pump' fuel figures are very similar to ours.

wether or not US spec Supra's put out 360 at the fly or not is of no concern, as we only get Uk and Jap spec here and that is what we are comparing.

The "inflated" american HP claims quote was becuase all to often we see two similar spec modified Zed's on each side of the pond claiming very differnet power outputs. Like 800bhp in the U.S....600bhp here.

 

Again, you make speculation and assumptions without considering the facts. No 2 cars are alike, even if they use the similar upgrades. You have not accounted for the differences in climate, testing conditions, HELD boost levels, A/F ratios, fueling, and ignition timing.

 

Most american zx's and supras are run on the strip, they usually have the trap speeds and acceleration figures to justify the power. How many UK cars ever done that, apart from the standard "well I beat Audi TT's easily" kill story?

 

This is drifting off subject. The VG30DETT is not a more "efficient" engine than the 2JZ. Comparing manufacturer rated HP vs boost is just stupid.

wether or not US spec Supra's put out 360 at the fly or not is of no concern, as we only get Uk and Jap spec here and that is what we are comparing.

 

The UK models can easily emulate the power of the US spec cars, it just varies between car to car. It's all in the fueling, it makes a massive difference in output even at the same boost. Some stock models fuel just right, many run pig rich.

 

There's no superior efficiency to it between any engine, it's just the Toyota ECU's conservative way of protecting the engine at WOT.

The UK models can easily emulate the power of the US spec cars, it just varies between car to car. It's all in the fueling, it makes a massive difference in output even at the same boost. Some stock models fuel just right, many run pig rich.

 

There's no superior efficiency to it between any engine, it's just the Toyota ECU's conservative way of protecting the engine at WOT.

 

I'm still waiting for these dyno graphs that a standard US spec supra produces "360 HP flywheel"

I'm still waiting for these dyno graphs that a standard US spec supra produces "360 HP flywheel"

 

Visit supraforums.com and use the search facility. I can't remember if you need to register or not, but there are a raft of baseline dynos in there.

How can they be more generious if it was SAE corrected? When you correct a dyno rear-wheel hp (not est flywheel, and not hub hp) figure to SAE standards, the figure goes down not up.

 

The only scenerio where a SAE corrected figure is higher than an un-corrected one is if ambient temperatures were say 95+ degrees F and ran well above sea level, which can often happen in America. SAE is around 76 degrees F.

 

I don't know why they're different but they are.

One dyno operator told me plenty of others make theirs read high as people like a high result.

Here is one so far... more to come

 

http://www.i2x.net/temp/dyno.jpg

I don't know why they're different but they are.

One dyno operator told me plenty of others make theirs read high as people like a high result.

 

I think he mean's for a flywheel HP estimate. The UK Scooby tuning scene is notorious of that. I have seen some dyno operators estimate 30-50% at through the transmission ... yeah-right-reckon.

 

99% of the power runs in the US are measured and printed at the rear wheels. But the best one would be un-corrected so what you see is what you get. This could mean you have more HP or less HP, just depends on the ambient temps and elevation.