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4G93 racing cam, need help here
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maddriver
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Jan 19 2007, 12:17 AM
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QUOTE(spoon2272 @ Jan 19 2007, 12:20 AM) i just change my original cam to piper cam with 288 degree.after finish transplant the cam,i think it's not well tuned bcoz my car is less power then original one n the sound went smoother during high rpm.can someone help me plZ?? with that kind of overlap, u can expect the power to come from between 4500rpm to 7500rpm. u might lose some power on the low end, but gain gila on the higher end of the rev range. what's the lift like? the 288 is the duration only.
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maddriver
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Jan 20 2007, 12:07 AM
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QUOTE(spoon2272 @ Jan 19 2007, 02:20 PM) yeah u're rite i can fell my car accelerate during high rpm.anyway i didnt know this is half raise,full raise or whatever.this is the cam specs INLET EXHAUST total duration-288 -288 max camshaft-6.30mm -6.25mm max valve lift-10.10mm -9.98mm valve opens-38 BTDC -68 BBDC valve closes-70 ABDC -40 ATDC i dun understand what these means.anyway tx for helping!  try using 272 degree cams for the exhaust. that might help
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