First off when adjusting the rockers it is not the rocker that bottom out on the stud, it’s the ball that bottoms out on the studs taper where it translations from 7/16 down to the fine thread area.
You need to understand this to understand the adjustment process.
Before you go buying new parts I would pull that apart exh rocker and ball off,
Look close at the flat side of the rocker ball for cracks emanating from the center out .
I have seen this take place on rocker balls that have been tighten down beyond the 20 ft spec, and once this takes place the valve adjustment done by means of the stock jam nut or a poly lock will not hold!
Also you may just need a new lifter.
Pull the motor down and remove that lifter and look at the exh lobe.
If the nose of the lobe looks like all the other good ones and the base circle looks like it is only showing ware on about one half the width of the base of the lobe as it should if it’s good.
Also look at the oil hole ends of the push rod.
They should be round and have no flat spots like they have not been spinning .
Then putting in a new lifter will get your back to being well again.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!
1) 1940s 100% silver 4 cup tea server set.
Two dry rotted 14 x 10 Micky Thompson slicks.
1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.
Education is what your left with once you forget things!
Last edited by steve25; 10-06-2021 at 10:25 AM.
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