floyd946

well i been thinkin if i built my d16y7 does anyone think i can push around 30psi of boost or cant i do it so just let me know

Tom-Guy

30 psi with compatible T04E compressor whould net you in the 400 (probably plus) whp range, maybe a bit more or a bit less depending on what you've done with the engine. This is, of course, on racegas and something other than stock camshaft. Head porting I dunno, since I neither know a lot about Y7 head, nor do I know anyone whose tried for big power with a Y7 head. Stock Z6 heads have seen 400-425 at 30 psi, which is what I'm basing all this on.

tractiondeprived

sure, 30psi wont be a problem on a turbo bout this size


saying boost pressures and not horsepower estimates owns u

W O T

30 psi would be ------- insane

I can butt-feel the difference going from 10psi - 15psi on my built a6, going from 15psi - 30 psi would just be ------- crazy

I dont think I would be able to control it

To be honest, I think if youre going to spend that much money, your probably better off going with a b series motor.

Im a hardcore d16 guy, but when going that big, id probably switch over

Tom-Guy

Flow through a tiny D-port won't give as big a gains as you're thinking they will, WOT. Past 250-275, it's law of diminishing returns played out on a disheartening level.

You ever see how Terry (Boostfed) on HT got a HUGE jump in power/psi going from 2.5 to 3" charge pipe in the 550-750 whp operating range? It's that all over again, on a smaller scale. Until you start hogging out ports until the car feels like total *** off boost, it's not that big a difference.

Tom-Guy

Not that 400-425 whp is anything to sneeze at.

FooK

whats the big deal? I remember a local guy over here pushing 30 on his d16y5. big 16g turbo, srp pistons, eagle rods, methanol injection...

it was good for an 11.3 on a pegleg l3 tranny and 130mph traps.

Tom-Guy

On an HX?

I need to talk to this guy... I have a guy with HX/GX oddball wierdfuk setup asking me a few Q's that I'm not wholly equipped to answer... thanks to Bone for siccing him on me.

FooK

Uhh, I am not so sure he has the setup anymore, they change swaps and stuff more than they change their underwear. I'm not really sure how you could contact him, but I know most of what he did with the setup, it was pretty simple. Didn't even do much tuning to it really, I just based him out and set him up with an ostrich and crome. We ran the VTEC xover for the 4th valve action at 2500 rpm and tossed like 14 degrees of timing at it. Like I said, not much tuning...