Performance cylinder kit

I started with a similar knock Minarelli kit from Aliexpress.
Bought 2.. still have one new in the box.
The piston ejected one of the ring locator pins after about 600 miles.
Wasn’t willing to try the second kit.

The ports needed filing and when I drilled the cylinder holes from 6 to 8 mm I had to hold back on the drill press. The first hole shot through with just the weight of the chuck and bit. They’re cast iron but soft cast iron.
It ran very hot…in the 275*-310*F range. Could have been the CDH head I was using.
All that said…it did run well when it ran.
 
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