Bent Push Rob Saga
it's highly unlikely that the timing chaing skipped. shearing a crank or cam key would be more likely-- unless it's a nylon toothed sprocket, then all bets are off.
that cam isn't ridiculous in the slightest, but i always check P/V clearance above .450 and if your pistons are positive deck to achieve that 10:1 static it is very possible they hit.
as an aside, what kind of rockers are you running?
see that mark? that's galling. it's indicative of the valve stem rubbing the guide, which means the valve is bent.
so you have multiple touch ups on the piston crowns, which means you've obviously got piston to valve clearance issue. this would lead me to believe that one (or more) of the following is going down: the timing set was installed improperly, the cam lift is not what is on the card, the pistons are positive deck with a very thin head gasket, rockers are 1.6:1
another, albeit distant possibility, is that the guides are too tight. this can hang up the valve and allow for contact and then congrats: bent valves!
last order of business: yes, you can clean up the pistons in the block. knock down any high spots, dress any sharp edges, clean it up real good and ship it.
it's highly unlikely that the timing chaing skipped. shearing a crank or cam key would be more likely-- unless it's a nylon toothed sprocket, then all bets are off.
that cam isn't ridiculous in the slightest, but i always check P/V clearance above .450 and if your pistons are positive deck to achieve that 10:1 static it is very possible they hit.
as an aside, what kind of rockers are you running?
see that mark? that's galling. it's indicative of the valve stem rubbing the guide, which means the valve is bent.
so you have multiple touch ups on the piston crowns, which means you've obviously got piston to valve clearance issue. this would lead me to believe that one (or more) of the following is going down: the timing set was installed improperly, the cam lift is not what is on the card, the pistons are positive deck with a very thin head gasket, rockers are 1.6:1
another, albeit distant possibility, is that the guides are too tight. this can hang up the valve and allow for contact and then congrats: bent valves!
last order of business: yes, you can clean up the pistons in the block. knock down any high spots, dress any sharp edges, clean it up real good and ship it.