Quote:
Originally Posted by spooph
This is the correct position to measure Cylinder 1 intake, to measure the exhaust side I would turn it clockwise another 1/4 turn so that the lobe faces away from the bucket on the exhaust side.
Keep in mind, you only measure 2 valves at a time. So, in this case, you're set up to measure cylinder 1, intake 1 and 2.
Then you turn the engine so that the exhaust side is properly lined up and measure cylinder 1, exhaust 1 and 2.
Then you turn the engine so that the intake on cylinder 2 is properly lined up, measure cylinder 2, intake 1 and 2.
Turn the engine so that cylinder 2's exhaust valves are properly lined up and measure Cylinder 2, exhaust 1 and 2.
Then you have accurate measurements. Put the crank at the 2T mark and remove the cam cap covers.
Measure the shims inside, do the math to figure out which shims the need to be replaced with (make sure you do it in the right direction), replace shims.
Put the cam cap covers back on and go through the same process to measure all of them and verify they are correct.
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Mmmm...not quite. If the piston is approaching, at, or just past TDC on the compression stroke, all 4 valves will be closed and can be measured. Pretty much the entire compression stroke they can all 4 be measured, depending on cam lobe location (as long as the lobe isn't on the bucket or follower). You only need to measure from the base circle.
Even the manual tells you to measure all 4 at once. This is the correct position to measure all 4 valves on cylinder 1 as the lobes are all pointing away from the buckets.