rocker arm nuts breaking
rocker arm nuts breaking just had a question on why ive had two comp cams rocker arm nuts break. two different occasions, just dont want it to break while im doing a pass and break something else.
I had the same problem my engine builder called me after he was finishing up the build and he wasnt even putting much force to set the preload and they snapped. This was on a used set of pro mag style poly locks. Bought a new set and never looked back. I have the rest if you need two just pay for the shipping.
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The first one I broke was on used rockers now this time on new rockers. Set the up by adjusting the nut then the set screw. Looking at getting some longer arp rocker studs and poly locks. Hopping this fixes it for good.
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I have broken at least three CC poly locks in the last year. The set screws were torqued to 25# IIRC and it appears they would just fail under normal driving. I got rid of them and went ARP perma-locks and have had no further issues but I did have to machine the tops of the perma-locks down to clear the composite valve covers.
