update to high crankcase pressure

So finally had a chance to start tearing down the motor to see what happen with the leak down test after pulling the head on the number 1 side I find that the #1 piston and head have some damage it looks like a small screw or a piece of plug broke off. But I always check my plugs and would have seen that it was broken. Here are the pictures if anyone has any ideas what might have happen I still need to pull the piston out of the block but didn’t see any scoring.

Looks like someone had a valve stem keeper disappear.

Carb screw?

I'd say a screw or air bleed out of the carb, and you've pinched some rings lands on that piston.

Hope this helps,

Charlie

Screw from throttle shaft???????

It swallowed a screw from somewhere.

ROAD RAGE wrote:Screw from throttle shaft???????

X2 or maybe a bleedp

Looks like a small FUSE from the fuse box

Ok checked the carb and didn't see anything that was missing on it so have no idea what got in the motor,
how bad does the head look and should I send it out for repair. If so its not looking good to make any races for the near furture, I still need to check the piston ring lands for damage.

A cleanup cut on the head and be sure the valves aren't bent.

well still cant figure out what screw got in there
all just have to fix it and carry on.
thanks for the help guys