and some boating time

who's name is on those rockers?
what else did it damage?

I looks like it might be a "Scorpion" brand roller rocker arm. I have always seen them with the BLUE annodizing color.

What caused it would be my question. I doubt it just failed on it's own. It looks like something caused significant force. Did a valve hang up somehow? What's the pushrod look like?

Don't know the brand. Damage was extensive. Don't know what caused it. This was the second one to go! First time it was caught early, second was the killer!!

Did it bend the pushrod? Looks just like a cheap imported cast rocker failure.

Go domestic investment cast, or billet.

My new engine will have shaft mount rockers. Both to get away from the guide plates and the stupid valve train geometry of BB Engines!!

Clear, purple, and a few othewr colors. This does not look like a Scorpion rocker to me, but hard to tell fromk pic.


Pure Energy - you didn't find out what kind when first broke and replaced ? Or even after this one ?

There's a reason why it broke - either POS e-bay crap or something is set up wrong. You need to find out. 2 rockers to break without a reason.

If your going to stay with a stud mounted rocker, I would use the Crane "GOLD" race series. Or go to a Jesel shaft system.

Scorpion rockers have a scorpion stamped into the top of each rocker.