Zombiechopper
Addicted to ArboristSite
Well, I got her all done today! Ported my MS460. I had previously smeared the OEM piston and cylinder and had put on an NWP big bore kit to get me through the summer work I needed to do. So today I cleaned the Mahle jug and gave her a basic woods port and decked the jug. I just widened the intake and exhaust as much as the skirts would allow and opened the upper transfers towards the intake as much as the ring pins would allow. I took about .020 off the bottom of the jug with emery paper on a glass slab and used the oem gasket (cannot buy any Dirko/Yamabond/Hondabond anywhere in a 100mile radius of here...). Squish is at .025 so I might run a popcan gasket if I feel like it later. Compression is only at 150 but that was after 5 minutes of run time when hot. I gave it a proper hone with a 3 stone brake hone and it has caber rings and a Meteor piston. It was too late to work her so I only cut a few cookies and tuned her up but she sure has some snap now! Very glad I finally got the balls to grind!