i bought a 97 civic hatch with a gsr integra b18c1 swap.
i am not a basin of knowledge on cars so i just want to know if its possible
to run a twin turbo set up on that car with two different sized turbos so i can get boost at two different stages of my power band

 

or am i dumb

 

dang, i wonder too
that sounds like a good idea

it sounds possible to me, and would require a lot of custom fabrication.

although, then again it sounds almost too good to be true.

 

funny i just mentioned this yesterday in a thread trust took over. it's possible i suppose, i was actually thinking this would be better with a supercharger and turbocharger, rather than 2 turbos.

my theory is that the supercharger would deliver instant boost, with piping running close to the turbo piping, with the merging of the pipes having a "flap" type valve to seal off whichever charger's piping had less psi, which would(in low rpms) have the turbo's piping closed off. once the turbo was producing more psi than the supercharger(high rpms), the flap would close off the supercharger piping and the car would run like it had only a turbo. this could even be controlled mechanically by the car, with a switch in the cabin, or even electronically. there would need to be some sort of other device holding the valve all the way closed or the valve will just stay in the middle.

this is just an idea but i think it could work. i don't actually know but this might be the system the new VW is using, but i swear i thought of it before those damn germans

 

you could run two small sized turbos, first one hooked up normally, then the second one hooked up to the downpipe of the first turbo. Set the wastegate on teh first turbo to open at the RPMs/PSI where it gets it's maixmum power before it falls off at higher RPMs like many small turbos do. After the first turbo reaches it's prime, the wastegate would open and send the exhaust into the second turbo, which would be spool up quick since you'll be at like 4k/5k RPMs. Have them someone hooked up to a Y-Charge pipe so that all the air would go into the same piping, then througn the intercooler and then into the engine.

Actually im just brainstorming, but its an idea.

 

do you mean the dumptube of the wastegate or the actual downpipe. i was just researching while i was at work, and basically what i was describing was what they use in the golf GT. so it must work, or VW wouldn't use it. if you have like 7 grand to burn you can try it.

 

i wanna do it on less then 7.
i think it can be acomplished
i was also thinking about building my b18 block (or maybe a ls) into a stroker by adding an inch or so to the top of the block.
ive read and seen pictures of one like it someone did on a h22
A twin turbo system added to a stroked out b18 or ls would be insain.
im thinking about upgrading to a type R head after i port and polish it
idk if the gain would be worth it if i already have a gsr head

 

This has been over and over in I4 import land. Not worth it on so many levels. It is not worth it because you simply do not get the desired drivability that you think you would. On top of that you have to deal with tuning for 2 turbo's that are different sizes and inline with eachother and I dont know about you guys but I've been in the game for over 10 years and I could not do it. You going to pay for somebody to have to deal with such a complex setup and tune. Them this is the last thing I will say but it is often over looked. You are in a 2000 to 2500 pound front wheel drive car. Traction is not and never will be your strong point, these cars need that lag to situate theirselves for the onslot of tq that is about to be forced on the front wheels all the while the weight of the car is being transfered to the rear wheels. LSD's only make up for so much and tq steer suck donkey *****.

 

debbie downer

 

then in a realistic point of view what would be the best system?
and what about having a rear mounted turbo like this
http://www.chevyhiperformance.com/te...rbo/index.html
as well as an additional traditional front engine turbo