late 50's Y-block rocker arms

Daves55Sedan

Daves55Sedan

Well-known member
I have late 50's rocker arms with the resistance fit threads and a few of the rocker arms have worn thread so the screw backs off after the engine is warmed up ruining a perfectly good valve lash adjustment.
Does anyone make a shallow locknut that will fit on those adjustment screws?
 
I just had the same trouble I ended up purchasing a sent of used rockers with the lock nut and changed all the self lockers with the lock nut. I made a couple of calls to see if there was a "fix" but none that were permanent. Gerry
 
You can buy replacement rocker adjustment screws from Macs Auto Parts, Concours Parts and Tee-Bird Products.
It is not unusual for the screws to come loose over time.
Regards
 
Some suggested a while ago on some forum I read that just take a hammer and slightly bugger the threads in one area to provide a fit that won't loosen.
 
Most of the time it is the threads on the screws that get worn. The rocker arms may be OK. But I could be all wrong LOL. Bill
 
Dave Have you got the self lockers worked out? If you are interested I can send you the ones I took out of my car there were plenty of tight ones? Pay the mail postage and they are yours, If you want I can find a couple of tight ones and just send what you need? Gerry in HOT AS HELL Southern Ca
 
Dave got your payment today, You didn't have to do that but THANKS. You are a stand up guy... Thanks and hope you get the Y running soon. Gerry
 
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