Tell me about superchargers
#1
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Tell me about superchargers
I recently bought a 96 SSEi and this is the first car I have owned with a */c. I work on an ambulance with a turbo diesel and have some understanding of turbos, and I thought that the only difference in the two was that the */c is belt driven off the motor, and the turbo is air driven off the exhaust. But I am finding that my boost gauge shows negative to no pressure when I am driving casually and only goes to positive pressure when I get on the gas hard. Also why does the boost "step up" as the tranny up shifts and actually drops RPM'*. I am used to a turbo where you have more boost with higher revs, and it drops boost as you up shift.
#7
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I think 7 to 9 psi is norm on a Series II. You don't get any SC benefit when it'* under vacuum. It'* a function of the wastegate. Without it, you'd have boost at all times which would be murder on a gasoline engine'* MPGs.
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Originally Posted by dillcc
Anybody remember that animation that shows the supercharger and its wastegate operating under different engine loads?
http://www.bonnevilleclub.com/forum/...ght=cobalt+gen
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07-19-2007 11:59 AM