Gen 6 502's bob madera cams morel lifters teague platinum rockers...has anyone seen this issue...
Looking for specs on cams cant find cards right now, this happened on both intakes and exhaust

motors have probably 200hrs...

One totally blew apart where pushrod goes in...both motors has this problem..boat has dry exhaust also

Do you know the valve spring retainer to guide clearance?

Why is there milky oil in there?Did You contact the manufacturer yet?I have had this happen to a name brand rocker and they replaced them for free,I was told it was from hammering on it before the aluminum came up to temp,I installed the new set and never had a problem again.

I never hammer them cold, and milky oil just because its cold and at the top of the motor, goes away after bringing up to temp

The bottom of the rocker where its cracked looks very close to hitting the guide plates.
How much spring pressure???

double ck for no coil bind in the springs, but other than that look to be junk...could be bad outsourcing ??

I don't like aluminum rocker arms. I've seen countless failures of different sorts with aluminum.

Get some crower or comp cams hi Tec units. You will not see them cracking.

Now, of the valve train geometry is not right, that's another issue.

The bottom of the rocker where its cracked looks very close to hitting the guide plates.

I replaced them with crane golds...