How much clearance is reccomended for spray in the cylinders? also the ring end gap clearance? Im running a Probe piston. any suggestions?

 

Talk to Probe and maybe also the ring manufacturer. Some pistons require different ring gaps than others also. I wouldn't ask a bunch of guys on the interweb

 

Yeah I know, I was just fishin'

 

The piston material will have a lot to do with it as will the amount of "spray" you're going to use? On my new engine my builder recommended Hellfire top ring gapped at .030-.035 and a Total Seal 2nd ring gapped at .030-.038 for my Mahle forged ft pistons.