Piston to valve clearance with CP 11:1 and skunk2 stage2 cams (pic inside)
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From: northeast, tn, usa
heres the slight dome on my cp's, 11:1, .5mm overbore, about the same as ITR pistons.

I have a set of sk2 st2's that arrived today. I'm running stock replacement ferrea valves, NOT oversized(and supertech springs/retainers). can someone with experience tell me if i'll have any sort of problems, without me having to clay the motor. I have sk2 adjustable cam gears, and i'm afraid of, while i'm at the dyno,that while advancing one and retarding the other, i don't want to run into any interference, or both valves be open enough to hit each other.
the spec sheet says:
INTAKE: duration@1mm: 266 deg................ LIFT@0" lash: .485" (12.3mm
Opening @1mm :........................................ 37deg BTDC
Closing @1mm :.......................................... 49deg ABDC
EXHAUST: duration@1mm :262deg............... LIFT@0" lash: .466" (11.8mm)
Opening @1mm : .........................................61deg BBDC
Closing @1mm :.......................................... 21deg ATDC
UPDATE!!! INSTALLED AND RUNNING AT 0,0 ...NO PROBLEMS, IDLES PERFECT! they say "fair/good streetability" PERFECT!


notice warning on box:
thanks. db
Modified by darrinbrewer at 1:23 AM 3/29/2005

I have a set of sk2 st2's that arrived today. I'm running stock replacement ferrea valves, NOT oversized(and supertech springs/retainers). can someone with experience tell me if i'll have any sort of problems, without me having to clay the motor. I have sk2 adjustable cam gears, and i'm afraid of, while i'm at the dyno,that while advancing one and retarding the other, i don't want to run into any interference, or both valves be open enough to hit each other.
the spec sheet says:
INTAKE: duration@1mm: 266 deg................ LIFT@0" lash: .485" (12.3mm
Opening @1mm :........................................ 37deg BTDC
Closing @1mm :.......................................... 49deg ABDC
EXHAUST: duration@1mm :262deg............... LIFT@0" lash: .466" (11.8mm)
Opening @1mm : .........................................61deg BBDC
Closing @1mm :.......................................... 21deg ATDC
UPDATE!!! INSTALLED AND RUNNING AT 0,0 ...NO PROBLEMS, IDLES PERFECT! they say "fair/good streetability" PERFECT!


notice warning on box:

thanks. db
Modified by darrinbrewer at 1:23 AM 3/29/2005
I'm going to say clay the motor anyways.
But if it makes you feel more comfortable, a buddy of mine running PCT's and JUN 3's was drunk when assembling the motor and accidentally advanced the intake cam 2 teeth and retarded the exhaust cam 1 tooth and didn't have clearance issues.
But if it makes you feel more comfortable, a buddy of mine running PCT's and JUN 3's was drunk when assembling the motor and accidentally advanced the intake cam 2 teeth and retarded the exhaust cam 1 tooth and didn't have clearance issues.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kendall »</TD></TR><TR><TD CLASS="quote">
But if it makes you feel more comfortable, a buddy of mine running PCT's and JUN 3's was drunk when assembling the motor and accidentally advanced the intake cam 2 teeth and retarded the exhaust cam 1 tooth and didn't have clearance issues.</TD></TR></TABLE>
Thats awesome haha
But if it makes you feel more comfortable, a buddy of mine running PCT's and JUN 3's was drunk when assembling the motor and accidentally advanced the intake cam 2 teeth and retarded the exhaust cam 1 tooth and didn't have clearance issues.</TD></TR></TABLE>
Thats awesome haha
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kendall »</TD></TR><TR><TD CLASS="quote">I'm going to say clay the motor anyways.
But if it makes you feel more comfortable, a buddy of mine running PCT's and JUN 3's was drunk when assembling the motor and accidentally advanced the intake cam 2 teeth and retarded the exhaust cam 1 tooth and didn't have clearance issues.</TD></TR></TABLE>
well i guess you shouln't have a problem then
But if it makes you feel more comfortable, a buddy of mine running PCT's and JUN 3's was drunk when assembling the motor and accidentally advanced the intake cam 2 teeth and retarded the exhaust cam 1 tooth and didn't have clearance issues.</TD></TR></TABLE>
well i guess you shouln't have a problem then
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From: northeast, tn, usa
says:
"it is the responsibility of the engine builder / end user to check all clearnaces when using high lift cams (stage 2s or 3s) end use should check to make sure the valvesprings will NOT coil bind.
"it is the responsibility of the engine builder / end user to check all clearnaces when using high lift cams (stage 2s or 3s) end use should check to make sure the valvesprings will NOT coil bind.
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