69z-28

well, twins, you can have one small and one big, so the small one will kick in real fast with almost no lag and the big one will give u top end, but nowadays turbo lag isnt raelly big, they fixed a lot of that with most turbos. single turbo is cool but twin turbo is cooler but either way i would rather have a blower.

red9450

Are you sure about the differnt sizes on turbos in a twin setup? that doesn't make any sense to me. It would be like having a twin plenum intake manifold that fed each bank of the engine, and spraying a 100shot of nitrous on one side, and 150 shot on the other, because there is no crossover pipe with a twin set-up. And granted that the torque that a V-8 makes and the fact that any decent turbo head unit these days is ball bearing does get rid of much of the lag, but there is less with a twin set-up because of the smaller turbine which needs less rpm to begin spooling.

69z-28

well you can have 2 of the same but its kinda smarter at least IMO to have a smaller and then a bigger for the reasons i mentioned. idk all that much but it makes more sense than 2 regular same sized turbos. like i said before id rather be blown.lol

red9450

No, as far as i know, it ISN'T POSSIBLE for the reasons I stated. Either one turbo that is approx. twice as large, or 2 turbos which would be half the size. I am curious however as to somewhere that i could find info on this set-up with 2 different sized turbos. You may be right, but to my knowledge it can't be done.

Lenny

archemedes

http://www.bankspower.com/twin-turbo-system.cfm
here's the people who would know

69z-28

this is just a quick link, but it explains basically what i said
http://auto.howstuffworks.com/turbo6.htm
its at the bottom of the page

archemedes

I've never seen 2 different sizes what banks does is the blades are variable pitch (they actually move inside the housing) he holds most speed records for turbo charged vehicles so I figure he knows what works best

Mike Jones

iTrader: (1)

To bank he spends all his time on trucks.

archemedes

now his first stuff was f bodies at bonneville (I still have the poster of his third gen firebird on my wall at my parents)

red9450

Yes, I have heard of this, but never 2 different sizes.

red9450

I never knew that. Do they use them in racing applications???

69z-28

idk. i dont know a whole lot about turbos or even superchargers. when i want to learn more and am maybe gonna get one ill learn more.lol

archemedes

it's how stuff works they don't tell you it is used just that it is possible (and have had things wrong before)