I show how to DIY motor swap a Harbor Freight Predator 212cc engine into a mini bike, dirt bike, motorcycle. This bike is surprisingly fast with the 6.5hp/ 7HP hemi engine and CVT TAV 30 series torque converter transmission in it! This motor swap is a common upgrade for go karts but is easy to install on a motorcycle too. I have even seen this swapped into trucks and cars. This is a simple project that can easily be done over a weekend with a welder and angle grinder. There’s also a xr100 with a BBR big bore kit motor swapped cr80 in this video. In part 2 I pull the governor out of the engine and I installed a stage 1 kit into the predator motor, and even do a little spring adjustment to the CVT.
Here’s some links to Amazon if your looking for some of these parts. CVT torque converter
CVT torque converter
Both of these Torque converters fit 3/4″ engine output shafts (predator 212cc engines have 3/4″ shafts) and both kits come with the 40 pitch sprocket (this was the same size sprocket i modified to fit my chain pitch. I hope this helps you guys out.
Here’s the jet and air filter kit
Here’s the Tachometer
Here’s the curved tube I used for the intake runner 9
