With the moco statement that no valve adjustment required for the life of the engine leads me to conclude that there is no lash control for each individual valve - only the control from the hydraulic lifter on a single pushrod that operates two valves. The rocker arms have to control two valves and they better be very precisely made else the valves may not be totally synchronized due to slight differences in spring pressure, stack tolerances, etc. Hopefully the moco has addressed this potential problem and has designed and manufactured it to such tolerances that it will not be a problem. Time will tell.
It looks like beehive springs are used now. It also looks like the standard spring retainer, stem and lock system.
That being said, if you have a common one piece rocker arm with two pads, one for each valve, how do you make sure they BOTH have the same preload on the valve stem?
If one is touching, that means the other rocker pad is not under the same preload. Unless both stem heights are exactly the same height. When you grind valves on the M-8, the stem length I'm sure is going to have to be "adjusted" so that both are in contact with the common rocker shaft with the dual pads.
This seems very complicated and not a good long term way to do it. I could see if one of the rocker pads were to be adjustable on each rocker. Then you could zero the fixed one and then adjust the other to meet that same zero. But without some way to adjust between the two pads and valve stem lengths, how is this going to be done?
I don't see any stem end caps like used on overhead cams that could do this type of sync between the two valves/rocker pads.
What am I missing?
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Topic: Milwaukee-Eight (Read 61121 times)