well i lost a pushrod from a failed retainer in the lifer.
shown here

Pushrod link

i went ahead and upgraded the rockers and rods
fired it up and quickly came a metal grinding noise.
like spur gears eating themselves, or metal in a pump.
so i shut it down. once cooled i decided to rock the crank back and forth.
this was its result.



ur honest guess. i haven't opened it up yet because its end of season. no money no funny.
and i don't like to leave blocks open for long periods with no pan/oil at least canadian winters are dry.

if its spun bearing, think i can get away without work on the crank?
if its end cap/stretched bolt yay?

i dont think its above the bearings as theres no knock or tick while running.
ie wrist pin or bent connecting rod. but sounds like valve train chatter from too advanced timing..

here is a vid of the top end put back together. you cant really hear it.



my guess the bent pushrod was from float/kissing or the pushup.
psi on oil never goes past 60 but i am running royal purple 20w60
no zinc or additives, about 700 miles on the build.

i guess whom ever guesses what it is and i do actually open it gets bragging rights?