with an un cut 58 cc head, 10.6
and another tip,
the number written on the front of the case looks like the stock 2.2L bore size which is 3.445
that is only .015 above the stock slant six bore of 3.430
I used the 1.0 mm oversize 2.2L pistons. That gives a bore size of 3.484 which equates to a .054 overbore.
Gives a bit more bore to side of valve clearance to reduce valve shrouding when using OS valves.
