What would you rather have on your daily driver a turbo that makes full boost by 3k rpm or a cent. supercharger(vortech) that makes full boost at redline?

 

do a supercharged turbo setup...

 

This is going to be a long thread.


Superchargers have linear power curves, simple as that - that's the difference. For a small engine the parasitic loss you will take on with a blower probably won't be worth it, this is why 99% of fast imports on the 1/4 use turbos.

It all depends on the engine, for me turbo is less reliable and more expensive. If you are running a larger high compression engine, its probably better to simply bolt on a lower boost blower.

 

If you go with a turbo you can manually adjust the pressure and tune it to run easier as a daily.. then hit a light at night and turn it up (safely). Also, you can choose how to drive it and keep some decent fuel mileage.

 

quick turbo spin-up depends a lot on the diameter of your downpipe and exhaust system.

Normally aspirated engines need a certain amount of back pressure to function fully. Forced induction just wants to get rid of it as soon as possible.

Lower back pressure means that the engine isn't working as hard, which gives better mileage. It also means that the turbo spins up faster, which means quicker boost. By the nature of the turbo, there is going to be *some* amount of lag, whether you measure by fractions of a second, but you can get around that by pre-revving the engine before a start if you feel that is important.

A smaller turbo will spin up quickly, giving you boost at low rpms, but will loose effectiveness at high rpms. A larger turbo will take longer to spin up, but will give you insane power once you're in the power band. Some cars use sequential turbos...a smaller one spins up at low rpm, and a larger one takes over as the engine revs higher.

 

There is *SOME* truth in what you are saying. To get a turbo to spool quicker you could clip the turbine spool, and use the correct size D.P. and exhaust to give it enough backpressure. With smaller turbos and 2 1/2" exhaust is good for about 13-15 psi and around (ballpark guess) 300-400 CFM. It is true that F.I. needs a larger exhuast, but until you get into a huge turbo then the exhuast needs to be slightly restrictive to keep power and quik spools.

BTW: I hope this helps you out on your decision.

 

turbo!!!!!!!!!!!!!

 

Depends on the type of supercharger DomesticRice. The JR superchargers for the RSX and Civic SI hatchback are very efficient. It just depends on the car and type of supercharger.