looks like that one was too loose...appeared may have been hammering the rocker before the pushrod gave up...also what push rods ? did you ck for proper lenth ? Rob

You say you set them at zero lash then 1/2 turn. How do you difine zero lash? It takes a light touch with new lifters to find this spot.

i got them from my local speed shop. i told him what lifters i had and rocker setup and he ordered them. do you think i have the incorrect length pushrods. and what is the best way to find out what size i need?

I would seriously consider pulling the head(s) to check the valves. Way cheaper to do that now than lose the valve later into the engine. I would also suggest having a pro set the lash. Little mistakes cost so much. I would not gamble an engine at this point. Take it to an engine builder to get your setup right. I use Ateco even though I know how to do this stuff. I have spent too much money fixing broken engines because I was trying to do it myself. Hi-performance parts go bad on little mistakes. That is why now I only use experts for my two strokes and four strokes go fast stuff. I was rebuilding these things when i was kid with success with stock parts and stock engines. Hi-perf is a all new game.

Don't get depressed. Figure out what went wrong and fix it. Learn from your mistakes and move on. If you don't think you can handle it, find somone local that you trust to help you. Good Luck!!

they would have no way of knowing for sure what lenth would be correct, they sell a test rocker arm and a adj push rod to check for the correct lenth...Rob

Good advice!

Start by removing a rocker from one intake and one exhaust valve. Clean the end of the valves with thinner. Sharpy marker the end of each valve and reinstall the rockers and adjust properly. Turn the engine over 2 or 3 revolutions. Remove the rockers and look for a bowtie shape approximately centered on the valves in the marker. If you have that, you pushrod are the right length.

engine noise
 

Bring it to Loto You do drywall I fix boat :drink:
Thumper

well i would at least leak it down.... something sure as hell bottomed hard...