will it need fly cutting
#4
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i was told by vengeance racing that on an otherwise stock motor their vindicator cam only had .030 PTV clearance on the intake valve, and that was at .604 lift. in my opinion even .030 was way to close. any more lift than that is way to much without flycutting.
Wayne
Wayne
#7
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both affect PTV clearance. when in doubt, build the motor and clay it. if it's too close, time to flycut. .100 is nice, but i personally wouldn't go less than .80. everybody has a different answer, it's all up to you how close you consider too close.
Wayne
Wayne
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I would think that duration on a 112 would fit. It is however, a big cam. No way I would run it without checking PTV first. Then you have to decide what you are comfortable with.
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well the reason i ask is because i dont have the cam and i dont wanna buy it if it wont fit ive seen people fitting slightly bigger cams with not as much lift
#11
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Originally Posted by bluenyghthawk
well what ive understood before lift doesnt effect your ptv but duration does. but i could be wrong.
both affect PTV clearance. when in doubt, build the motor and clay it. if it's too close, time to flycut. .100 is nice, but i personally wouldn't go less than .80. everybody has a different answer, it's all up to you how close you consider too close.
Wayne
Wayne
i was told by vengeance racing that on an otherwise stock motor their vindicator cam only had .030 PTV clearance on the intake valve, and that was at .604 lift. in my opinion even .030 was way to close. any more lift than that is way to much without flycutting.
Wayne
Wayne
.080/.100 (int/exht) are the accepted "safe" norms and that is not even on a hydraulic setup.