Discussion Starter · #1 ·
here it is folks. This is one of 2 Puma motors out there right now....... should be done very soon...
i was wanting to know what the gain would be compared to other big bore engines?So what is the difference in this cylinder compared to a pro-x style cylinder?
The 137 will prolly be the rod to use, as far as a Puma crank being cheaper then a saber crank, i highly doubt it........i do think it will need to be balanced though, i expect it to shake..... i would think a Puma on gas will make 70's, but using a non programable ignition and a std 250r pipe may be a stretch????? we will know very soon though!the 137.5 mm rod will be a much better option than the KTM rod. Alot stronger and will provide a better rod/stroke ratio than the shorter options, especially on stroked cranks. I am waiting for some of the results on these motors before building one. I will balance the crank on mine for sure and even after this, the crank will be much cheaper than the sabertooth crank. I will be interested in the HP but I would assume a 4 mil stroker on gas with a tame state of tune should make mid 70's HP and tons of torque. I and am assuming this with a current 250r style pipe with a larger end stinger applied to it and a standard CR250 ignition. The perfect all around dune motor.