Season over....
 

Had a miss the last week or two, pulled plugs last week, #8 was clean, had water in cylinder a little looked like, so I pulled intake and found a busted up pushrod, missing 2" of it, and the inner part of lifter was in valley along with rest of pushrod, missing the inner lifter retainer, assume that's in the pan too...

I am thinking since this was for exh. side, the intake poulled air in and it had nowhere to go, lifting head enough to let water into cylinder... gonna pull engine and go over everything... so guess I am don't for the season....I thionk I may upgrade to linked retrofit lifters now...still am not sure why it happened but maybe just bad luck... everything else checks out..

Go through them both and you will be ready for spring. Took the family out for dinner on the magnum time to winterize and put away for season. One last clam digger run! Good luck force

These are only 10 hours, just bad luck.... not doing thm this winter... I need one winter that I don't spend 10.000 on my boat or more lol

Are these blower motors? did you hear a popping back through the intake? if the exhaust valve wont open the cyl. pressure will exhaust through the intake when it opens, doubt it would lift the head unless you are running a lot of boost. how many RPM were you running?

HAd popping at times while I was trying to figure out what was up, not blower engines, not sure what was rpm at time of fail, just was down on power had a miss so I pulled plugs...

Sounds like you will be ok, I would replace the lifter and test it to confirm. lets hope it was just a bad lifter! FYI I run bone stock GM roller lifters to 6200 RPMs for 14 years on the same motors without a failure. Maybe the pushrod failed first!! Good Luck and let us know if you find anything that may have caused it to fail.

Wish I had screens in valley, I didn't build these motors but when I do they will have them, woulda saved me from pulling it...

Yes screens are a great idea!

Tim,,when you get the new lifters make sure the plunger is held in with a snapring and not that cheeze wire 4 corner one..if they dont or you cant find them call crower and see if they will sell you them...or have crower build a set of bullett proof lifters..

Yes the ones in there now are the 4 corner kind, never really thought of that being an issue I guess.... sucks...