Back in to work now and wanted to fill everyone in on the fun happenings in the Warthog Hidey Hole. The order for the Stage 1 kit for the mini bike's Predator 212 engine arrived and was pretty simple to install. I started by pulling the motor mostly out and installing the new 18lb (8kg) valve springs:
I used my compression tester hooked up to 30 psi (2 bar) air to keep from dropping the valves in the engine. Note to file, when doing this on a 4, 6, or 8 cylinder the other cylinders keep the engine from turning over. well on a single cylinder engine that is not the case and you can run an engine on air pressure alone and gets very exciting for a couple seconds. I used a wrench as backup to keep that from happening twice.
Next up was a new jet in the carb, and onto fitting the exhaust. The kit was not universal enough and the pipe had to be cut, shortened, and rotated, then welded back together:
While I was in there I redid the throttle cable mounting and sadly it changed the throttle to where there isn't much movement at all between closed throttle and wide open. It takes a very delicate touch but is controllable for the most part.
All back together and ready to test drive:
It sounds much meaner now, and is way more responsive, it will also wheelie like crazy so I'm considering an extended swingarm or wheelie bar. I have no photos of me driving it but this one is of a friend on it:
Oh and the new top speed is 43 mph (69 kph).
I was also able to get out a few times to go deer hunting on opening weekend and got this nice (for me) 8 pointer:
More to come,
JB