Been looking all over and am trying to find 11 to 11.5 compression pistons. Everything I have seen are 9.5 to 1 or 13.5 to 1. The pistons are going with a 60cc combustion chamber. Trying not to special order anything. Thanks
Google TRW 2216 IIRC and you can use those. Are they the lightest piston out there? No, but they aren't as bad as most think. You should be able to find them in any oversize up to .060 if that's what you need.
With those Pistons you can set your combustion chamber volume and then mill the dome down to get the CR you want.
Also you'll need to stick the piston deck .045-.050 OUT OF THE BORE to use the least dome you can and get some quench.
Use an .039 gasket and only mill the heads far enough to get .050 or so piston to head clearance (you can squeeze it to .040 but you gain nothing and you'll still have some room to mill the heads later if you need to). You should be able to get what you want with a dome of .150-.200 and get the CR you want.
