8cm cam

[52merc]

what are the valve settings for this cam thanks

[rotorwrench]

The book says .010" to .012" for intakes and .014" to .016" for exhaust but if you have the rotator valve assemblies from later in 1951 they have more clearance. Soome folks set them tight and some set them loose. I usually go right in the middle. The valve seats hammer in before the valve stem has time to wear so the clearance can get a little tighter right off the bat. If the motor is between overhauls with some time on it, I go toward the middle to tight side. This is just my own way of doing it. Others may do it differently.

Kerby

[52merc]

thanks kirby i read somewhere 14and 18 but didnt seem right trev

[Mike51Merc]

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.015 on both sides served me well.