Re: Replacing broken valve stem
Let me guess, stock valves and revving over 5500? Was it valve bouncing at the time too? These are good insurance things to keep in mind to avoid busting parts.
Wouldn't removing the head be 100 times easier than removing the sump and piston in the car?
I'd be pulling the head and just inspect the top of the piston - if its OK, then just do the valve. Did the valve drop into the cylinder and mash the piston, or did the valve stem seal hold it up?
Are you sure its a busted valve and not the locks or retainers failing?
So, remove the head........
With the valve stem broken, the retainer would have fallen off the top of the spring with the 2 locks lying around too (you'll see this with the rocker cover removed). This negates the requirement for a valve spring removal tool for the strip down.
Not sure if you'll need some cutting compound to seat the valve into the seat? Bueller?
Give it a thorough parts clean, insert valve, valve stem seal, spring and retainer. Squash it all down with a spring compressor tool and the insert the 2 valve locks and then release the compressor tool slowly. Refit head.
393 Tremec TKO 9"