6311 - Full Mod G320RC Top End (Replacement for engine 6300) and full mod long rods

and full mod long rods 7-7

FG F-1 Competition

We do all of the same porting as our full mods as well as additional piston modifications

</p> <p>We have left the porting open on this top end

To start we machine the cylinder for the 2mm stroker and for a proper squish clearance with out stacking gaskets

6311 - Full Mod G320RC Top End (Replacement for engine 6300) and full mod long rodsPorting not shown in picture! Full mod G320RC top end. Can be installed onto a stock G320RC engine or is a replacement top end for full mod engine 6300. View engine description for modifications done to top end. https: oneillbrothers. com products 6300 7 7hp full mod zenoah g320rc 31 8cc engine?_pos=1&_sid=6be5a34a3&_ss=r Top end comes complete with: Ported cylinder Modified piston piston ring Cylinder gasket Transfer port skavenging covers Wrist pin