Engine Trouble Got a replacement yd100... and it kinda sucks.

Have AF80 rod and 12mm pin on a 110cc engine but it has steel sleeve and is a piece of crap! Also, it has 52mm piston and I thought it would have lots of torque.
The 110 engines out of the box are absolute turds. They can be torque monsters with the right work and a clone pipe though. That was my attraction to them.
 
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