adjusting valves 0n big solid roller cams
#1
Senior Member
MASTER BUILDER
Thread Starter
Join Date: Mar 2008
Posts: 173
adjusting valves 0n big solid roller cams
I adjust my valves the EO_IC way with no problem. an engine builder friend, who has never set valves with engine in car at track says it is wrong way. he is still in the past with his ways. he puts each cylinder on
my friend is an engine builder machine shop operator who says the right way to set valves(big solid roller cams) is doing each cylinder at exactly TDC and setting the two valves and moving to next in firing order and moving to next cylinder in firing order and doing same until all cylinders are adjusted. from what i gather this is completely wwrong and will only work with hydraulic cams and real small solid cams. I use the EO_IC method and it works great,
, especially when you cant see the harmonic balancer to get TDC(not that you even need it)I was told that if you wanted to use the TDC way you get #1 on TDC(firing cycle) and adjust 4 valves (none of them even being #1, rotate 180 degrees, adjust 4 more, rotate 180 degrees more and do next 4 valves, and rotate another 180 and do last four valves, this way you are doing a full 720 degrees cycle interestingly enough , the number one intake and exhaust valve are not even being adjusted o; when #1 cylinder was at TDC. could one of you guys that really understand this stuff chime in and let me know if i am right, and why i am right, or if i am wrong, please explain the proper way to adjust the valves on big roller cams. thanks chevy art
TDC
my friend is an engine builder machine shop operator who says the right way to set valves(big solid roller cams) is doing each cylinder at exactly TDC and setting the two valves and moving to next in firing order and moving to next cylinder in firing order and doing same until all cylinders are adjusted. from what i gather this is completely wwrong and will only work with hydraulic cams and real small solid cams. I use the EO_IC method and it works great,
, especially when you cant see the harmonic balancer to get TDC(not that you even need it)I was told that if you wanted to use the TDC way you get #1 on TDC(firing cycle) and adjust 4 valves (none of them even being #1, rotate 180 degrees, adjust 4 more, rotate 180 degrees more and do next 4 valves, and rotate another 180 and do last four valves, this way you are doing a full 720 degrees cycle interestingly enough , the number one intake and exhaust valve are not even being adjusted o; when #1 cylinder was at TDC. could one of you guys that really understand this stuff chime in and let me know if i am right, and why i am right, or if i am wrong, please explain the proper way to adjust the valves on big roller cams. thanks chevy art
TDC
#4
Senior Member
RACING JUNKIE
Join Date: Jul 2007
Location: Independence, Missouri
Posts: 1,181
I do it this way; When the lifter corresponding to the valve I am adjusting, is on the base circle of the cam, I adjust that valve. I follow this procedure, whether the engine is in the car, or not.
#5
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RACING JUNKIE
Join Date: May 2003
Location: Coldwater, MI
Posts: 2,998
Originally Posted by mudracer35
THE BEST WAY I HAVE FOUND IS WHEN THE EXH IS GOING DOWN SET THE INT. WHEN INT IS COMING UP SET THE EXH. VERY EASY.
#6
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Join Date: May 2005
Location: Dexter, New Mexico
Posts: 69
I beliieve you will find that cams w/ BIG overlap and wide seperation angles one or both of the lifters will not be on the base circle @ TDC, even if only off by a few thou. I'm sticking with EO/IC........it's not that hard. 8) JB
#7
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Thread Starter
Join Date: Mar 2008
Posts: 173
adjusting valves
hey sc4405you explained it the way i thought it should be, but just was not sure. bottom line at TDC the #1 valve adjustment has already left the building(elvis talk) thanks for the info chevy art