Polini 112

[t5vinny]

Hopefully buying a primmy 125 but the engine fitted is a 50 special with a polini 112 4 speed. The guy tells me that it will be quicker than a standard primmy 125 engine. Being a total novice to smallframes i was wondering what to expect from it. I will look for a 125 engine later to build something a bit more special.

[me]

very odd. A 125 block downed to a 50/112 - a good set up 112 would almost be as quick as a well set up standard 125.

To convert the 112 back to a 125 really would only involve a crank swap and maybe primaries.

All 125s and 50's were fitted with the same gearbox (4 speed).

[gav]

It's a small up grade to make a 50 a bit quicker you can upgrade that engine to a 130 quite cheap

[t5vinny]

Thanks so no worries really. Hopefully get some more pics today and buy it.

[t5vinny]

Sorry just re read your replies. I meant it had a 50 engine fitted with a 112 kit.
Are the 50 casing the same just crank.gearing and cc different.

[gav]

Yes just swap the bits over
Item number272452809442 eBay

[t5vinny]

Thanks gav