What do you all suppose the absolute best you could expect from a streetable 92 octane-fed VQ35 would be? I'm talking the works... High compression pistons, itbs, equal-length headers... Whatever you can imagine. Just a ballpark estimate would suffice. Thanks.

 

300-325 RWHP. Maybe? That would be ***** to the wall I would think. I figured I would throw up a guess since noone else has.

 

I would bet that you might be able to get around 375+ rwhp out of a totally built VQ35 assuming the parts become available. The biggest thing would be good heads, but considering nobody makes aftermarket heads right now it is hard to make an estimate. For a 92 octane motor I probably wouldn't bump compression much over 11:1 so you wouldn't get much power there, but if pistons were designed to better take advantage of the combustion chamber (like Endyn Honda pistons) there might be some good gains to be made there. The other factor is how streetable do you want it to be - you could probably get awesome top end power if you were willing to sacrifice some low end and idle quality.

 

Well, the Nismo VQ35 crate motor pushes out 450hp at 13:1 compression, but at that high a compression you would always need racing fuel and you wouldn't be able to drive it on the street.

 

I don't think you could stand with individual throttle bodies on the street. Aren't they really a racing part?

That said, with agressive cams, high compression (11.5 or 12 depending on how crazy you are), all bolt ons... I would say 350 would be attainable.

Dan

 

Just so you know, Mine's already did a street tune 320ps.

That is with piston, cams, valve spring, then your IHE, and so on; Pretty much the works. The N/A ability of the VQ35 is promising, but it will never achieve the kind of power you can get with FI. And the cost of the Mine's package is already more then the ATI Procharger I think.

 

excluding new connecting rods and pistons...

**FICTIONAL GAINS/FREE'ING OF HP**
radical cam - $1400 - ~30hp
headers - $1200 - ~10hp
plenum - $400 - ~10hp
no cats - $230 - ~10hp
free exha. - $300 - ~5hp
UR pulleys - $400 - ~3hp freed
flywheel - $600 - ~5hp freed
intake - $200 - ~3hp

~$4,730 bucks in parts

~76hp gained/freed

287hp stock
vs. ~363hp modded
(16% drive-train loss)
~305 rwhp...

Damn guess it is conceivable to *maybe* get over 300 rwhp NA
. Of course my listing is only guesstimates. If you did increase the comp. ratio to 11:1 then you should definately go above 300 rwhp with these mods.

Anything excluded concerning the above list w/out re-doing internals other than cams???

 

Porsche gets 380 HP out of a 3.6L N/A engine, so I don't see why 350 - 375 hp would be out of the question for the VQ35, especially if you upgraded the internals and raised the redline by 1500 rpm or so.