Is it possible to install a twin turbo system on my '92 Teg? Even if I did, would I have to replace anything due such a dramatic HP and torque increase?

 

This has been covered before...do a search. There's not really a good reason to put any sort of twin-turbo system on most inline-four motors because of the added complexity and little performance benefit over a single turbo. The motor doesn't flow enough to spool two turbos running in parallel and a sequential setup would require so many vacuum lines and regulators and be way too much of a pain to get running properly.

 

OK, 1st of all it is possbile to make it twin turbo. But it would not only be slower, and more expencive, but im pretty sure that it just wouldnt run right. Sure you could have a manifold made to have 2 cyls running a smaller 14b size turbos. But your retarded if you do. One big t3/t4 would give you more power, more boost, longer boost, and less turbo lag. The lag that you would have with a twin turbo setup on a 4cyl would be like 4500 rpms. LoL.
You wouldnt even get a half as much hp if you had 1 big turbo. It could be done, but you would have to use so small of a turbo to even get it to spool up w/in your rev limiter, lol

 

it's possible to install a twin turbo on an inline engine but for a 4 cylinder it's probably over kill or useless. The first turbo would have to be very small to prevent/reduce lag. You'd be better off with a 25 or 30shot to bring the boost up and use a single larger turbo.

 

You don't really need a spool-up shot of nitrous unless you're running a huge turbo. Any reasonably-sized one will spool up plenty quick.

 

im curious on how you plan to do this. would you make a new intake manifold that forced air from each turbo into two separate cylinders? or would you merge the flow into the stock manifold?

 

yeah I know that's why I said a larger turbo, which would be required for making big hp

 

Twin turbos are nice for having power throughout the power band, but for raw horsepower they are very limiting. If you're building up an RX7 or a Supra TT the first thing you'll do it get a larger single turbo to replace the dual turbos. A twin turbo uses the smaller turbo which has a small rotational mass and spools up quicker to sping the second turbo up. The problem is that smaller turbo then limits you overall horsepower. It allows you to keep a nice torquey bottom end.

-Tim

 

I know a lot of guys that went from TT setups to single on Supras for better performance overall - why go backwards?

 

Even though most of the TT Supra guys go to single turbo to get about 900rwhp, the most powerful setup is the HKS 2835 (sp?) to get the most hp.