Valve adjustment Help
#11
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Join Date: Dec 2005
Location: alberta,canada
Posts: 166
Originally Posted by sg1586
Here's the only way valves in a race motor should be adjusted:
When the exhaust valve is almost all the way open then adjust the intake on that cyd......
When the intake has fully opened and is about 1/2 way closed then adjust the exhaust on that cyd..
This is the way I have been doing it for years and never had a problem..
Good luck.. 8)
When the exhaust valve is almost all the way open then adjust the intake on that cyd......
When the intake has fully opened and is about 1/2 way closed then adjust the exhaust on that cyd..
This is the way I have been doing it for years and never had a problem..
Good luck.. 8)
#13
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Join Date: Sep 2007
Location: Montvale, VA
Posts: 1,431
Maybe I'm over-simplifying it,but,when I set my valves I just simply bump the motor over til the valve I want closes and comes all the way up :? I know there is movement that the naked eye can't detect but the valve stays shut for some time during operatoin and I don't think that the window of opportunity to adjust the valve is all that narrow.If it's up,turn it a tad and if still no movement SET IT!!! :?: Maybe it's not as simple as I thought
#14
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Join Date: Dec 2005
Location: alberta,canada
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Nobody has told me why it is the best way and the way i explained is the wrong way..i am getting opinions is all............i am going to the dyno on friday and i am going to try both ways to see what the diffrence is
#16
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Join Date: May 2006
Posts: 2,044
Originally Posted by sg1586
Here's the only way valves in a race motor should be adjusted:
When the exhaust valve is almost all the way open then adjust the intake on that cyd......
When the intake has fully opened and is about 1/2 way closed then adjust the exhaust on that cyd..
This is the way I have been doing it for years and never had a problem..
Good luck.. 8)
When the exhaust valve is almost all the way open then adjust the intake on that cyd......
When the intake has fully opened and is about 1/2 way closed then adjust the exhaust on that cyd..
This is the way I have been doing it for years and never had a problem..
Good luck.. 8)
Another thing I always do is install a remote starter switch on the firewall so I can bump the motor over while adjusting the valves, just makes it easier.
Charles
#17
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Join Date: Sep 2007
Posts: 4,137
Originally Posted by Tod74
Originally Posted by fishman1
With the engine in the #1 firing position, following valves can be adjusted
exhaust 1,3,4,8
intake 1,2,5,7
turn engine over 360 degrees adjust following valves
exhaust 2,5,6,7
intake 3,4,6,8
exhaust 1,3,4,8
intake 1,2,5,7
turn engine over 360 degrees adjust following valves
exhaust 2,5,6,7
intake 3,4,6,8
Unless "1 2 3 4 " doesn't neccesarily mean cylinder number "1 2 3 4 " but rather the cylinder that fires 1st Then the cylinder that fires 2nd etc
What am I not understanding?
I do it the "eoic" way
#18
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Join Date: Apr 2008
Posts: 1
Setting valves
I set valves the same way as fishman, I have read the replies from the guys that insist on the individual cylinder method, but they still have not answered fishmans question, why is your way correct. Opinions are not proof without some facts. I think fishmans point is at least his method is consistant every time, not, I think that valve is about 1/2 way down! With his method, you can simply change your valve lash ( with solid lifter cams) to experiment because the method itself never changes.
#19
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Join Date: Dec 2003
Posts: 185
Go ahead and adjust the valves the way fishman said then rotate the crank back and forth a little at a time wile checking lash at every movement and you will see on "SOME" cyd buy doing it this way you won't be on the base circle of the cam all the time. Some may get tighter and some may be looser and some may be fine. It will have a lot to do with the duration of the cam.
Like I stated this is the way I do it and if I was working on your engine I would do it the same way and this way works for "any" engine..
Also If any of you go to a National Event go in the pits and you will see all the pro teams from Pro Stock to top fuel all do it the way I do ....
Like I stated this is the way I do it and if I was working on your engine I would do it the same way and this way works for "any" engine..
Also If any of you go to a National Event go in the pits and you will see all the pro teams from Pro Stock to top fuel all do it the way I do ....
#20
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Join Date: Oct 2003
Posts: 144
I was taught, this sequence by a very big engine builder.
intake vlave on its travel up to close, adjust exhaust on same cylinder.
when exhaust just drops, adjust intake on same cylinder. I have checked the adjustment at any other location say TDC and they always come up correct.
been doing it for 7 years that way
intake vlave on its travel up to close, adjust exhaust on same cylinder.
when exhaust just drops, adjust intake on same cylinder. I have checked the adjustment at any other location say TDC and they always come up correct.
been doing it for 7 years that way