How much vacuum is your car making at idle especially with cams?
Dec 21, 2010, 04:25 AM
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How much vacuum is your car making at idle especially with cams?
I might buy a car with HKS 272 cams in a 2.0 and during the test drive I noticed what seemed to have low vacuum, I'm new to camming out imports but even with a nice size cam in one of my v8's I had higher vacuum....although I know its like comparing apples to oranges also.
I know it depends on cam timing, ignition timing, stroke, the tune itself and the healthyness of the engine but what's everybody vacuum at idle and what rpm does your idle at?? This car I believed was idling around 1,100 I assume to help prevent it from stalling/loping/weak brakes with the low vacuum, etc...but curious on what everybody else's vacuum is at and at what rpm...
I know it depends on cam timing, ignition timing, stroke, the tune itself and the healthyness of the engine but what's everybody vacuum at idle and what rpm does your idle at?? This car I believed was idling around 1,100 I assume to help prevent it from stalling/loping/weak brakes with the low vacuum, etc...but curious on what everybody else's vacuum is at and at what rpm...
Dec 21, 2010, 05:11 AM
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Mine with Cosworth M2 cams is pulling right at 11 in/hg at 900 rpm. Feel free to PM me if you have any questions. Those cams shouldn't need to be idling that high. I had my HKS 272's idling at stock RPM with no problems.
Josh
Josh
