02-07-2017, 11:52 PM
Further info,
- to convert to a kart motor the intake manifold will have to be replaced with a kart intake manifold. use only early kart manifolds. the newer versions made for mc9-91 series motors are longer and won't fit up easily or work well if made to fit.
- the stuffer will also need to be replaced a super series motor stuffer will fit nicely.
- often the points are difficult to find. several pointless ignitions have been fitted with good success.
- either the original saw piston may be used (it was the early mc10 piston) or a thin ring mc10 kart piston can be used instead. if you want a low buck alternative to replacing the piston you can de-temper the low ring and carefully cut a thin relief slot into the top ring to simulate two thin rings stacked with a spacer.the reduced drag will be nearly as good as a kart thin ring piston.
- replace the older style con rod #55009 with a newer mc91 style rod #47903. the later rod is considerably more reliable.
- any super series stamped tin block/head cover will fit up to the motor. the same applies for the side cover standard super series side covers fit up nicely though will look incorrect on a mc10.it is possible to skip buying a d44 and use the head found with the saw motor if you happen to have these parts or another point you can modify the saw head cover to do the same job with some removal of excess cast metal.
- the motor can be nine ported and exhaust opened if desired that will add serious horse power if done correctly. RESEARCH the subject before doing anything.just randomly trying to "improve " porting without knowledge is the best way to ruin a good motor.
Dave L.