vacuum questions on a supercoupe and blower questions

blown96bird

Registered User
I am running a AED supercharger system on my 4.6 v8. What rpm is the blower turning on a stock supercoupe at 5800 engine rpm's? Mine is turning 15100 rpm at a engine rpm at 5800. How much increase in air charge temp above ambient after the intercooler? I normaly see a rise in tempeture of about 45 degrees above ambient while on boost. The manifold pressure is 7.5 psi.

On vacuum with after market cams I make 14 inches of vacuum at idle. I measured after the intercooler and before the blower. I measured 18 inches of vacuum at idle behind the throttlebody but before the blower. Could it be that I need a wat to enlarge the supercharger bypass valve and tube? Have you guys noticed the same thing on supercoupes? If so how much is the diffrencence of before and after the supercharger at idle?
 
blown96bird said:
What rpm is the blower turning on a stock supercoupe at 5800 engine rpm's?
14,500. Our superchargers are overdriven 250% from the factory. That's for the '89 - '93 Supercoupes.

If you add a +10% pulley the supercharge (@ 5800 engine rpm) would be be running 15,950 rpm.

68COUGAR
 
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