Thread: SC Cam Question
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Flieger Flieger is offline
Max Sluiter
 
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Join Date: Mar 2006
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In a bit of a tangent, not specifically applied to Turbos:

What is the "lobe center"? Is "lobe center" the time that the valve is at maxiumum lift?

I hear that early 911S, RS, RSR, etc cams with high overlap and lift have "narrow lobe centers".

If a cam has a lot of lift, would this mean that the valve needs to start opening earlier and spends more of its time off the seat? Are high overlap S and RSR cams stressing the valves thermally by not allowing as much cool down time per combustion cycle?
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1971 chassis, 2.7RS spec MFI engine, suspension mods, lightened

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Old 07-20-2008, 07:30 PM
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