93 R1

isn't 35-40 lbs of air a little low for the numbers you want? Shouldn't it be in the 60lb range?

rx7tt95

I was led to believe that a ported motor flows between 35 and 40lbs min. for a two rotor.



I hear what you're saying Tony, but rebuild costs man, rebuild costs...I'm thinking a regular GT40 will still provide better boost response than my current turbo sans the BB center section. I have no doubt the BB version GT40R will have a steeper boost curve. You've seen my logs and how late my current setup comes on boost.



So the question is, which of the compressors would best suit a rotary engine on the street with the previously listed parameters? Which exhaust housing?



Performance is never free (nor cheap!) but if I can simply replace my current turbo and spend about $1000 doing it versus $4500 for a brand new BB turbo kit, makes good sense to me!

Badog

The 88mm wheel. While I think the smaller wheel has an advantage, I think it goes away too soon. There is about a 2% difference from the 82mm peak to where the same point maps to on the 88mm wheel.



Michel, what RPM did you get that CFM quote for? Or are you talking per a rotor?



Tony

jspecracer7

sounds like your in my situation. with my HKS T-45S, I build boost slowly...then at appx 5k rpms...hold the F#CK ON....all the way to 9k(and more...it still wants to pull).

93 R1

Sounds like you boys need a half bridge

j9fd3s

yeah that might be it

rx7tt95

Someone on the other list gave me that flow number.

jspecracer7

don't tempt me

vosko

you won't go full bridge!

jspecracer7

nope. Half bridge with the rotor housing cut will give me more flow than a full bridge. I think I'll bridge the primary's instead of the secondaries.