Quote:

+1 what Mag10 said. Just get an "x-acto" knife and run it along the edges of the dome and valve pockets, its part of the "engine build" not part of the "piston manufacturing". Don't cut into it, just scrape it, IE: keep the blade perpendicular to the edge. If you have your ignition advanced, and the higher comp. ratio, pre-ignition (pinging) could be a problem, especially if you get some bad gas.



Thanks for clarifying. You can't see it in the pics but that already been done before I got them. I can run my finger over all the "edges" and not feel any sharp edges and in some places can see that the edge has been taken down or de-burred.

SOLD: 07 Black BA, 39mm FCRs, TPUSA stage 1 head, TPUSA 813 cams, TPUSA 10.8:1 pistons, TTP #3 igniter, Specialty Spares Long Cannons, Tsukayu Hard Bags. 82HP/55tq NEW: 19 Goldwing Tour DCT