400 whp on N/A VQ possible?

Chuck33079 · 05-15-2014, 07:11 AM

Quote:

Originally Posted by Elmo370z

Very interesting. @ Jm auto racing, its just something about a high revving all motor engine. Don't get me wrong boost is something magical. Thanks all for responding, guess 400 to the wheels will be upwards battle.

So, if you dropped 15-20k on a NA build to just barely hit 400whp to have a high-compression motor that needed higher octane than pump gas and had a very narrow powerband so you'd actually be slower in 95% of real world driving situations than a 330whp car with more area under the curve, you'd be happy with that? If you're really serious, go read Shamu's build thread. He'll probably be around 400whp, but he's now got a 4.0 dry sump motor that won't be on pump gas.

For 400whp, go buy a Stillen kit and be happy. 400whp NA isn't an uphill battle. A 400whp NA car is a fool's project. You'll end up with an undriveable mess. For power on this platform you need boost.

Shamu · 05-22-2014, 07:42 AM

Quote:

Originally Posted by Chuck33079

If you're really serious, go read Shamu's build thread. He'll probably be around 400whp, but he's now got a 4.0 dry sump motor that won't be on pump gas.

For 400whp, go buy a Stillen kit and be happy. 400whp NA isn't an uphill battle. A 400whp NA car is a fool's project. You'll end up with an undriveable mess. For power on this platform you need boost.

Yeah I started to look into building a 400 hp VQ. Way too many limitations with VQ heads. And stockish VQ internals aren't up to RPMs you'd need to turn to get to 400. No reasonable way to get there on pump gas in my opinion.

Not an easy road to 400 plus but the HR head race motors are mostly all cranking out over 400. Just takes a lot of work from internals, to cooling and oiling systems, to intakes, to exhaust and engine controls.

And ultimately that 400 hp NA isn't going to be too street friendly

Think low pressure forced induction is way to go for a street car.

Jordo! · 05-22-2014, 12:41 PM

Quote:

Originally Posted by Shamu

Yeah I started to look into building a 400 hp VQ. Way too many limitations with VQ heads. And stockish VQ internals aren't up to RPMs you'd need to turn to get to 400. No reasonable way to get there on pump gas in my opinion.

Not an easy road to 400 plus but the HR head race motors are mostly all cranking out over 400. Just takes a lot of work from internals, to cooling and oiling systems, to intakes, to exhaust and engine controls.

And ultimately that 400 hp NA isn't going to be too street friendly

Think low pressure forced induction is way to go for a street car.

On that note, did anyone ever develop a roots or twin-screw blower for this motor? I thought there was one for the G37, but I've never been able to track it down -- possibly a one off.

I know the lack of standard throttle plates is supposed to be the main problem, but I don't wee why a clutch type engagement wouldn't get around that.

Massive low speed torque off idle with a table top like curve and a somewhat more modest top end would make for a fantastic street friendly beast.