Most any engine builder assumes that the cold valve clearance is what operating valve clearance will be.
I believe that under more extreme situations, possibly max load or maybe even max closed loop load that it's quite possible for valve clearances to be very close to zero.
My theory is that under operation the average temp over the length of the valve could easily be a couple hundred Celsius above the average temp of the head. Calculating this out on a given head this alone eats up a good portion of valve clearance in CTE.
Fri Jul 03, 2015 5:04 pm
emma
Joined: 12 Dec 2013 Posts: 78
Hey:-), I am also looking for good automotive shop for valve clearance and got one. You must go there. They did wonderful job. I am really impressed with their work.
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