ms4z28

hey i blew my engine and now im trying to take the last valve spring off the number 7 cylinder and the piston isnt holding compression. so does anyone have any suggestions about how to take it off withou pulling the head?

BriancWS6

iTrader: (18)

Top dead center method. Rotate the crankshaft til the piston is at TDC, then you won't have to worry about the valve dropping too far.

ms4z28

i bent the connecting rod also so i cant turn the engine. im putting the engine back to stock cuz it is still under warranty so im going to have chevrolet put in a new engine

DeadLifter

iTrader: (1)

Break a spark plug and hollow out the threaded part and braize an air hose attachment too it, put it in the spark plug hole and hook up compressor. I think you can actually buy a part that will do this check parts store. I just made my own though.

BriancWS6

iTrader: (18)

I would have recommended him to use the air compressor fitting, but when he said it wouldnt hold compression, I assumed it was bleeding off the air, thus why this method wouldn't work.

Siwel

True, but as logn as it isnt a complete and total loss, having the cylinder see a constant flow of pressurized air may be enough. It really just depends on how bad the piston/cylinder is damaged.

y2k_ta

iTrader: (80)

Take the plug out for the #7 cylinder, and stick something in the plug hole to see where the piston is stopped. If it's close to TDC, then you should be ok. Hopefully for you, it's close to TDC.

BriancWS6

iTrader: (18)

I agree. In his first post it seemed that he couldn't get this method to work, by stating:

ms4z28

hey thanks but i think im just goin to have to pull the head off but if u can figure some thing out the post it. thanks again