SrTelemaster150

No, as a matter of fact, I do not have machine shop capabilities but a lot of the work can be accomplished with "Bubba" machining With files, Dremel tools, drill presses etc.

Reducing compression height to increase the CR is NOT one of those "Bubba" capable operations. I do have the knowledge to operate machines, just no machines. The easiest (cheapest for me as I have to pay for the procedure) way in most cases is to mill the case deck, not the cylinder base. Either way would work however.

For or a good example of what "Bubba" machine work & farmed out machine work that might be involved READ THUS THREAD.

In that adventure I was exploring the possibilities of increasing compression. I would never go that route again to build a high compression FA-180. It would be far easier and cheaper to mill .035" from the deck of an existing FA-180' or mill .015" & utilize the .020" taller FG-57 or FG-84 piston.

A good upgrade to an FA-150 W/a clapped out top end would to use the FA-180 cylinder, piston, ring, valves & the 180 connecting rod bushed down to the 8mm FA-150 rod journal size. The would achieve a 12:1 CR FA-171. The only machine work required would be the counterbore in the case. Valve pocket & piston skirt relief is easy to do W/a drum sander in a Dremel tool in the case of the valve pocket & a half round file for the piston skirt relief. There would be no need for additional rid clearance in the case as the at role would remain the same.

BTW, the DA-180 is not a 1.8 cu in engine at all, it is 1.77 cu in.