valve lash check with PMA installed(no timing marks)

5twins said:

what are you going to do, pray tell, if you ever need to check the timing? That's not set at TDC but rather something like 15° BTDC. You'll need to make proper timing marks for that. I really don't understand this but it seems to happen all the time - guys install PMA's and don't make new timing marks. It's crazy. It seems all the clowns have left the circus and are now running around loose, buying 650's and installing PMA's on them with no timing marks, lol.

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mike in idaho said:

Roll the engine over until you see one exhaust valve go all the way down(maximum lift), now adjust the opposite exhaust valve(it will be closed, on the base circle of the lobe). Now turn the engine again until that valve is all the way down and adjust the other exhaust valve. Now repeat the process on the intake side.
That's how us old Triumph riders did it, "we don't need no stinking timing marks".

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arcticXS said:

If it is not rephased, it is simple. Both pistons are at TDC at the same time. You want to adjust the side that has just completed the compression stroke. Just look for the intake valve starting to open and the exhaust valve starting to close on the other cylinder. Then rotate 360 degrees, anddo the other one.

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arcticXS said:

If it is not rephased, it is simple. Both pistons are at TDC at the same time. You want to adjust the side that has just completed the compression stroke. Just look for the intake valve starting to open and the exhaust valve starting to close on the other cylinder. Then rotate 360 degrees, anddo the other one.

Click to expand...