After receiving a new cylinder head from Minidragbike and a bigger cam from DynoCams, I thought it would be good to tear down my motor, clean it up, install some new piston rings and put it back together. Many people have emailed me with questions about engine assembly, so I thought I would put together a step by step video. To keep the file size down and still allow me to explain the details I opted to use stills. At the end of the video is a test fire of that same motor after mounting it back onto my kart.
The video explains everything I did to assemble the motor. I know that all of you have your own way of doing things that are just as good and in your opinion better than my process. I am not here to teach old dogs new tricks, simply to provide insight into how I do it. If you are new to engine building, then this video will explain a lot of good tips for you. If you have been building engines for a long time, or at least pretending on 4cycle.com like you have been at it for a long time, please spare me your comments unless they are to build upon what was explained in a positive attitude.
And don’t forget to put in your pushrods, I know I forgot to mention them in the video. In this motor I used the shorter pushrods available from Burris.
For the test fire I am running alcohol which is supplied from a bottle hanging above the motor. I did this so I would not have to run gas through the whole system after the test fire, just through the carb and motor. I can’t wait for some good weather so I can track test this motor.
Feel free to comment in the box below with your thoughts, experience or additional tips you might have.