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MY buddy was setting the lash on his race car yesterday and we all use the traditional IC-EO method but he encountered a perplexing issue. When he set all his lash at the required .020 cold, he would then roll the motor around and when he would encounter say an exhaust valve at max lift he would check the lash on the intake and it would be at .024 lash.
He would do this same thing on other valves and find the exact same issue. Now I know this has to have been addressed by some engine builders in the past but I couldn't find any articles on line so my question is this.
If the valve lash is set at .020 cold and it is done with the lifter on the base cirle then is there any other point in the rotation of the lifter where it would have more than the .020 lash that was set?
We have been setting valve lash for many years so it is not a matter of not knowing what we are doing it is just that we have nevered checked it at any other point in the rotation before.
He would do this same thing on other valves and find the exact same issue. Now I know this has to have been addressed by some engine builders in the past but I couldn't find any articles on line so my question is this.
If the valve lash is set at .020 cold and it is done with the lifter on the base cirle then is there any other point in the rotation of the lifter where it would have more than the .020 lash that was set?
We have been setting valve lash for many years so it is not a matter of not knowing what we are doing it is just that we have nevered checked it at any other point in the rotation before.