Thread: Big Numbers On SR22VE 20V

Big fan of this car.

Awesome.........

I beg to differ.

However after looking at the compressor map (I think it is the right one) I see you're already well past the best efficiency range, so I retracted my statement.

Again, I will disagree. I'm not saying more would be better. 9.0:1 is a perfect choice. I'm just saying that as far as efficiency is concerned, if I'm comparing it to a setup I know well (9.5:1 compression and 13.9 WHP per psi from 0-11 psi or 27.5 WHP from vacuum-11 psi) you're down a little on compression so it would be a little harder to get the numbers all else being equal. If you disagree, that's fine. We don't need to get into it if you don't want.

I didn't do that math. I wouldn't begin to guess what the engine would make N/A so I couldn't. Provided those numbers for N/A are close, you're doing much better than I even thought before. 21.5 WHP per psi from 0-10 psi is amazing, and even adjusted to the equivalent for a 2.0L engine (19.35 WHP per psi) those are amazing numbers. Maybe the best I've seen on an SR engine. Clearly the 20V head and your attention to detail/efficiency is showing its value here.

Sure. Lots of things getting in the way, although mainly it looks like you're headed off the efficiency of the compressor map at those power levels. The exhaust and intake will help for sure. I just think maybe you're main cause of efficiency loss is the compressor. Obviously much more expensive to address I know.

An admirable goal for sure. It looks like it's working very well for you so far, and I like where you're going with the exhaust and the intake. I don't doubt you'll accomplish what you're after. I was just attempting to compare this setup to another efficient setup and give encouragement and praise.

Dre, in all what does a setup like this cost and I wonder how this would go in a 4WD application, say a GTiR with some ITB's to make the response even dare I say 'better'?

BenFenner dont just pick out small pcs and make statements on them. You do this and it changes the meaning of what is being said.

ITBs on a turbo setup like this is not going to make the response better.

If you want the best response for a specific setup get the smallest turbo that can satisfy your WHP gaols.

An AWD setup with a motor like this would be insain.

agreed, 4WD and this would be amazing, and tuning for efficiency is win in my book

but then why would nissan use throttle bodies on the gtir, gtr, if it doesnt increase response?

Steve

Like I said Godzilla will be released... My Pulsar will have a motor similiar to this soon.

Well as long as my block doesnt have a sleeve issue from Mazworx

like a couple others have had.



Chris

A setup like is crazy on an AWD car is crazy..

Here's my awd car on 20psi with a 6765..

http://www.youtube.com/watch?v=v51CH7m8RZ4

Dyno numbers coming soon...

VE of the engine affects the flow rate of the turbo based on the pressure ratio and adiabatric efficiency. Without going much further into detail, I can tell you for certain that WHP/PSI will change based on the engines compression ratio, just as it does with different cams. Though cams increase flow and dynamic compression, rather than the thermal efficiency.