Originally Posted by
Maximo
take the gold engine...put a 8 mm insert in the carb... drop out 0.2 mm head shim..basically take out the brass shim and leave the 2 aluminum shims.. grab a #6 or #7 glowplug..... add a 9886/41001 or a 9853/41001 and you will have a monster of a engine that will run like a raped ape !!!!
Bumping this thread. Doing this exactly. 9886/41001 is next purchase. Have the 8mm insert and #6 glow plug (comes stock). Pulling brass shim whenever my longer set of precision flathead screwdrivers come in. Going to run on 25% VP PowerMaster fuel. Should be a nice little engine for my Serpent Truggy!