[Jimbobeast]

Could the Comp Cams 1.65 roller tip rockers somehow be binding somewhere? The valves are perfect, the spring tension is perfect, new guides/seals/keeper, new cam and lifters and pushrods. The only thing that stayed the same were the rockers, with the same reselt - broken pushrods and always at the rocker end.

[65 Lamnas]

Originally Posted by Jimbobeast

Could the Comp Cams 1.65 roller tip rockers somehow be binding somewhere? The valves are perfect, the spring tension is perfect, new guides/seals/keeper, new cam and lifters and pushrods. The only thing that stayed the same were the rockers, with the same reselt - broken pushrods and always at the rocker end.

You have some type of mechanical interference going on. Doesn't matter if the parts are "new" or not, or were used the last time or not.

I think you're approaching the troubleshooting and diagnosis incorrectly by comparing what's different this time vs. last time. None of that really matters if there's contact between parts where there shouldn't be.

It's not a static situation, it's dynamic so parts are moving around during operation. If you're unable to duplicate the movement of the valve train components to observe what's happening, then you're going to have to disassemble things and look for witness marks and wear patterns for signs of contact. It's ALREADY been suggested that you look at the rockers and the slots and the studs. Seems like a good place to start, along with the rocker bodies contacting the retainers.