I want to see this for our cars...
- Thread starter eMKay
- Start date
K
Keith@FP
An inefficient Roots blower? Why not a twin screw or something a little more modern? 
Keith
Keith
Keith@FM said:An inefficient Roots blower? Why not a twin screw or something a little more modern?
Keith
Ok, an inexpensive, compact, and efficient supercharger that is easy to install. You get the idea right? I don't want huge power gains, I want something that will be reliable and inexpensive.
K
Keith@FP
Well, retail on that is $2700 and includes a chip - easy to do on a VW, not so easy on the Protege. It's good for about 20-30 hp according to dyno runs. It's a big investment to create a full intake manifold like that - we're doing it for the Miata at the moment.
The biggest problem is that there's no upgrade path. You'll never be able to cool the intake charge, so you're limited to how much boost you run. There's no way to tune the car for different fuel (94 octane east coast, 91 octane west coast) or to take advantage of different exhausts or cams.
I'll put it this way. The Miata crowd has the Jackson Racing SC that fits the same niche and has many of the same problems. And boost is an addictive substance. I've personally removed three JR SCs from Miatas to install turbos. It's always good to consider your end goal.
Keith
The biggest problem is that there's no upgrade path. You'll never be able to cool the intake charge, so you're limited to how much boost you run. There's no way to tune the car for different fuel (94 octane east coast, 91 octane west coast) or to take advantage of different exhausts or cams.
I'll put it this way. The Miata crowd has the Jackson Racing SC that fits the same niche and has many of the same problems. And boost is an addictive substance. I've personally removed three JR SCs from Miatas to install turbos. It's always good to consider your end goal.
Keith
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70
Keith@FM said:
Fun!!
(yes it is painfully slow at work, and I have nothing to do...and no place to go, until 11:00 pm (2300 MST) at which point I can go home and do this)
K
Keith@FP
It refers to the design of the supercharger and the lobes of the compressor. It's not a terribly efficient design but has been highly developed by Eaton and is very reliable as a result.
Keith
Keith
DooMer_MP3
Member
Yeah, are there any good pages on the difference between SC types (centrifugal, roots, twin screw)? I was hoping howstuffworks had something, but they didn't last time I checked, and I never got too far with a google search.
Chris
Chris
K
Keith@FP
Corky Bell has written a very good book on the subject, called "Supercharged!".
Keith
Keith
