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More parasitic loss in supercharging and turbochargers put alot more stress on your motor. That's a single argument about the two and i could rant on, but i'm not. GL on whatever you decide.
Right. They don't put any stress if you're not within boost. Once you're in boost, since they are much more efficient and produce more power than a s/c, the stress from a turbocharger vs. supercharger is much greater.
Right. They don't put any stress if you're not within boost. Once you're in boost, since they are much more efficient and produce more power than a s/c, the stress from a turbocharger vs. supercharger is much greater.
Say what ? 10psi from a supercharger is the same as 10psi from a turbo.
If anything the stress of an over tightened blower belt on a motor can put undue stress on the crank bearings at the snout and can also cause crank walk.
Some people have done both. That was done way, way back in semis and airplanes. Its called twin charging. Its not as efficient as you might think and it adds unessecary cost and complexity to a project.
Turbo-- easier to change boost... no fuss with pulleys. Let see... use power from the crank just to make more power or scavenge exhaust gas to build power which otherwise would have just went out the tailpipes.
superchargers are ok but they're too limited as far as boost. all you can do is change the pulley to get more.
turbo's are way better imo. plus the top end hit of a turbo is much more satisfying than the linear pull of a supercharger. i like turbo lag.... of course if you're lagging, then you're in the wrong gear. proper gear selection will give you instant boost as easily as a supercharger.
I agree with everything you said except the linear pull thing. I just love that freight train pull feeling that a supercharger gives VS the rubber band slingshot feel of the turbo.
I've been kicking around the idea of using 2x 14B turbos from Eagle Talons (4g63), its the stock turbo, plentifull and cheap, these will boost all day long (and at low RPM) to 8-9psi, You would have to fab up piping, intercoolers, fual mangement, etc... but should provide enough boost for this application . 4G63 (2.0L 4cyl) GS400 4.0L V8 sounds good to me. I haven't looked but you may even be able to put in the Talon SMIC one behind each fog light.
I haven't bit the bullet, but it wouold be a cheap, cheap option if it worked.
I had a supercharged GS400, and now have a twin turbo GS 400......Turbo all the way. I have also had many turbo cars, 2 single turbo Supras, twin turbo 300zx, eclipse turbo, Hayabusa turbo.......there is no substitute for turbos.
The GS I had SC'd was fine for an average modded car, but they are limited in what you can do with them. With a turbo, the sky is the limit....depending on the supporting cast of course. I glanced through this thread quickly, someone mentioned turbo lag........not an issue if the right turbo set up is chosen to begin with.
I had a supercharged GS400, and now have a twin turbo GS 400......Turbo all the way. I have also had many turbo cars, 2 single turbo Supras, twin turbo 300zx, eclipse turbo, Hayabusa turbo.......there is no substitute for turbos.
The GS I had SC'd was fine for an average modded car, but they are limited in what you can do with them. With a turbo, the sky is the limit....depending on the supporting cast of course. I glanced through this thread quickly, someone mentioned turbo lag........not an issue if the right turbo set up is chosen to begin with.
what type of internal work did you have to do for the turbo application? I'm interested in doing this, but I don't want to do major internal work to my engine. What will a stock GS400 motor hold(ie how much boost?) I know the trans is a weak point, but I've already rebuilt mine! I have modest goals. Would like to be about 425-475 rwhp......what are your suggestions to get there???????
Last edited by kevs98GS4; Jun 16, 2008 at 02:27 PM.
I like the turbo cause it uses wasted exhaust gases coming from the engine. So it doesn't take away from your motor. As the supercharger requires the crank in order to make boost and takes away power to create it at the same time. Besides the fact that my life revolves around turbo's lol