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Motor choice
Posted: Sat Mar 31, 2018 1:00 am
by pfleming29
If you had a choice between a super rat or a road toad motor. Which motor has the most potential for mx racing. If course modifying it.
Thank you
Re: Motor choice
Posted: Sat Mar 31, 2018 1:51 am
by Jack Elliott
interesting question.A late model (alumiferric) Super rat engine would surely be the best. If comparing cast iron 100cc cylinders would think Super rat would have a more MX peakier high exhaust port type set up but only guessing.Look forward to people that know chiming in on this
Re: Motor choice
Posted: Sat Mar 31, 2018 2:15 am
by BrianZ
Which Super Rat, the early cast iron cylinder or late aluminum cylinder?
Brian
Re: Motor choice
Posted: Sat Mar 31, 2018 2:35 am
by pfleming29
Alum.
Re: Motor choice
Posted: Sat Mar 31, 2018 2:46 am
by socalhodaka
Well I would think the fact the name Super Rat and not Road Rat would be the first clue. One bike was made for racing and the other was not.
Re: Motor choice
Posted: Sat Mar 31, 2018 4:22 am
by pfleming29
Thanks for the help.
Re: Motor choice
Posted: Sat Mar 31, 2018 6:08 am
by racerclam
the Rat engine would be best, the only cylinder difference is the rat has a 3mm higher exaust port , but the toad has mor flexability because of its stating point. But same potential . The toad has a wide ratio trans the rat close ratio. Toad has primary kick thst enables starting with clutch pullid in. BUT! has a weaker primary gears and no option to use cushion straight cut gears. Toad had needle bearings instead of the clutch steel bushing ( one plus ) . I would use the rat. THe early Rat iron cylinder does not have the same HP potential as the later also cooling is poor.
Rich