Oh man, I built my 30cc hot rod that's in my Giles years ago. Don't really remember all the specs. I know I have them written down somewhere...

Found them (in another post from 4 years ago):

Homelite 30cc
Weight with muffler - 2 lbs. 14 oz. (More cutting/grinding on this one than my Homey 25cc)
Muffler - Stock, square, gutted, with two brass 1/2" i.d. outlets added.
Carb - 11mm Walbro, manifold ported to match, external pulse line.
Ignition - CH Ignitions electronic set at about 26 degrees presently.
Cylinder - Quench or Squish band removed, cylinder to head clearance set at .020"
Port timing - Exhaust 165 degrees, Intake 148 degrees, Transfers 120 degrees (22 degrees blowdown)
Rings - Frank Bowman
Crankcase- stuffed to .020" crankpin clearance
RPM - APC 16 x 8 = 9400 (Possibly more with tuning and more run time. Also, with this port timing, a tuned pipe would probably give 800 to 1000 more.)
Test conditions - 4200 feet altitude, temperature 78 degrees, barometric pressure 29.75"

It's a fun little engine and I like it. I get similar performance at a lighter weight from my Echo engines, but I like this one just the same.

AV8TOR