Nissan 370Z Forum - View Single Post

Jeffblue · 11-26-2011, 12:46 PM

you asked about an EVO or WRX getting 1000hp... and you said it that huge difference in HP from stock can't just be from the turbo... i hate to burst your bubble but that's exactly what its from. much of those upgraded engine components are there specifically for the purpose of being able to run higher boost. The big difference between a 500whp supra and a 1000 whp supra is how much boost they are running. a lot of these crazy HP/small displacement cars, while they do have upgraded cams, headers, valve jobs and every other upgrade in the book... they are also running like 30-40psi.

FI makes a much bigger difference then marginally increasing the displacement of an engine.

all those old muscle cars you mention, and how they made 330hp stock just like the 370z... well the reason they could easily make that extra hp when you put work into them was because there was a lot of headroom in those cars. The 370z was tuned and designed very well to eek out almost every hp there was from the stock motor. Nissan didn't leave an extra 150 horsepower on tap... they squeezed almost everything they could out of the vq37hr. that's why gains from bolt ons are so minimal.

To try and figure out a realistic gain from what you are talking about we should compare the stock 300zx with a VG30DE (non turbo) to a full bolt on 370z with full bolt ons. The difference in displacement between these two engines is roughly the difference between the 3.7 and your hypothetical 4.5L stroker motor. and we'll give you the benefit of the doubt and say that what you would do to this engine would be the equivalent of 15-20 years of Nissan engineering.

1. STOCK 300zx NA = 222bhp (188whp)
2. STOCK 370z = 332 bhp (290whp)
3. FBO/Tune 370z = 380bhp (330whp) (this is based on the supposed whp numbers people getting from FBO and TUNE... which IMO are pretty exaggerated but if anything it helps your argument.)

4. Net gain in WHP from adding .7L, a lot of advanced engineering, full bolt ons and a tune = ~158bhp (142whp)

so what you are saying is you want to get a 330bhp motor to the 500WHP mark (which is ~590bhp) that is a gain of almost 260bhp or 210whp. Nissan only managed to get 158bhp out of adding .7 liters and a lot of advancement in engineering WITH everyone's aftermarket bolt ons... so how could you possibly expect to get 260bhp out of adding .8 liters? (even with all the upgraded engine components you mention.)

11-26-2011, 12:46 PM	#21 (permalink)
Jeffblue A True Z Fanatic Join Date: Dec 2009 Location: NY Age: 36 Posts: 9,192 Drives: Z32TT & 335xi Coupe Rep Power: 38	you asked about an EVO or WRX getting 1000hp... and you said it that huge difference in HP from stock can't just be from the turbo... i hate to burst your bubble but that's exactly what its from. much of those upgraded engine components are there specifically for the purpose of being able to run higher boost. The big difference between a 500whp supra and a 1000 whp supra is how much boost they are running. a lot of these crazy HP/small displacement cars, while they do have upgraded cams, headers, valve jobs and every other upgrade in the book... they are also running like 30-40psi. FI makes a much bigger difference then marginally increasing the displacement of an engine. all those old muscle cars you mention, and how they made 330hp stock just like the 370z... well the reason they could easily make that extra hp when you put work into them was because there was a lot of headroom in those cars. The 370z was tuned and designed very well to eek out almost every hp there was from the stock motor. Nissan didn't leave an extra 150 horsepower on tap... they squeezed almost everything they could out of the vq37hr. that's why gains from bolt ons are so minimal. To try and figure out a realistic gain from what you are talking about we should compare the stock 300zx with a VG30DE (non turbo) to a full bolt on 370z with full bolt ons. The difference in displacement between these two engines is roughly the difference between the 3.7 and your hypothetical 4.5L stroker motor. and we'll give you the benefit of the doubt and say that what you would do to this engine would be the equivalent of 15-20 years of Nissan engineering. 1. STOCK 300zx NA = 222bhp (188whp) 2. STOCK 370z = 332 bhp (290whp) 3. FBO/Tune 370z = 380bhp (330whp) (this is based on the supposed whp numbers people getting from FBO and TUNE... which IMO are pretty exaggerated but if anything it helps your argument.) 4. Net gain in WHP from adding .7L, a lot of advanced engineering, full bolt ons and a tune = ~158bhp (142whp) so what you are saying is you want to get a 330bhp motor to the 500WHP mark (which is ~590bhp) that is a gain of almost 260bhp or 210whp. Nissan only managed to get 158bhp out of adding .7 liters and a lot of advancement in engineering WITH everyone's aftermarket bolt ons... so how could you possibly expect to get 260bhp out of adding .8 liters? (even with all the upgraded engine components you mention.)