Originally Posted by
rigelkent09
Hi guys, I’m wanting to convert my 28-8 engine roto to bumpstart but don’t know if it’s possible and if there specific backplate for it, if anyone here had done it before please need help here, thanks.
You need a different crank shaft, 15803 (or cut off the extra piece that comes past the rod), and you need the 13802 back plate
