Originally Posted by
Truckracer
Not sure about the head / compression differences but OS parts lists the same cylinder liner for the GGT 15, the ignition 15 and the glo 91FX.
Well that just about answers that question.No one here has the OS 15 Ignition ,so we can try this engine on GG.What about the piston.
BCCHI The snow is heading your way.We have it today ,tonight and tomorrow.Looks like flying is over for awhile. No more R&D at the model park for awhile.
BCCHI Happy Thanksgiving.