Dual Turbo

98_M3_droptop · #1 (**permalink**) 09-29-2002, 02:20 PM

I was curious if anyone knows a place to get one custom made? I know they dont do kits for dual turbos. Ive seen a pic of a custom job once that ran about 15k. I was thinking of doing the same thing to my lovely car.

98_M3_droptop · #2 (**permalink**) 09-29-2002, 05:41 PM

I mean Twin Turbo. Does anyone know? Please.

Popester23 · #3 (**permalink**) 10-02-2002, 06:28 PM

ya, ask E36turbo about it, he has done it to his, and he is about to drop that alpina engine in it(which is very clean).

Popester23 · #4 (**permalink**) 10-02-2002, 06:32 PM

no his thing is E36biturbo, my bad

postmaster · #5 (**permalink**) 10-06-2002, 06:42 AM

whats a biturbo

muggo · #6 (**permalink**) 10-06-2002, 07:12 AM

Quote:

Originally posted by postmaster
whats a biturbo

Turbo works 0->10k RPM?
All range, i mean..

joe325 · #7 (**permalink**) 10-06-2002, 07:35 AM

biturbo means 2 turbos...
turbos dont work in all RPM ranges, they need time to spool up becuase they are powered by exhaust pressure.
what people usually do if they have the $$$$$$$$
have a smaller turbo and a larger tubro...
the smaller turbo spools up faster and reduces time of having no boost. then when the bigger one spools up the smaller one stops providing boost ( i think) and the larger one provides more boost for ya.

98_M3_droptop · #8 (**permalink**) 10-06-2002, 07:37 AM

Isnt it a smaller supercharger then a turbocharger?

joe325 · #9 (**permalink**) 10-06-2002, 08:56 AM

size wise i have no idea... but they work totally diffrent.
supers use pulleys and are powered by the crank.. you have no lag and supers are for off the line really..
turbos need to spool up and work better in the top end.

98_M3_droptop · #10 (**permalink**) 10-06-2002, 09:25 AM

Has anyone done a Hypercharger setup? Thats the super for low end boost then the turbo for high end.

Bmw330is · #11 (**permalink**) 10-06-2002, 02:39 PM

I'm not sure if superchargers are for off the line since you dont get max boost until close to redline where as with a turbocharger you get max boost at about 3500rpm.

joe325 · #12 (**permalink**) 10-06-2002, 02:45 PM

supers are for off the line... theres no turbo lag becuase its powered directly by the engine, as far as the boost increasing as engine speed i dont know, but i do know once you are going quick, the super wont help you out much unless you downshift becuase of how it works

98_M3_droptop · #13 (**permalink**) 10-06-2002, 02:48 PM

So using a combo super/hyper would work for boost all the way through?

BLOWN3 · #14 (**permalink**) 10-06-2002, 06:52 PM

Quote:

Originally posted by 98_M3_droptop
So using a combo super/hyper would work for boost all the way through?

It's not feasible doing a dual setup unless you are aiming for a HUGE peak power figure (and so the big turbo will be lagging badly).

Check out the Turbo M-Coupe and Turbo M3 here
Only 1 turbo. Both make 500bhp easily.

98_M3_droptop · #15 (**permalink**) 10-06-2002, 07:29 PM

Thanks man.