I will tell the story later, but here is a 1985 Kawasaki KX80 with a Honda XR100 engine. Built by John Cartwright of Cartwright’s Conversions back in 1992. I’m going to fix her up…
🤔 That’s a great idea …KXR! I have the 1984 SR125 Ward rode in my mind too.LOVE stuff like that. Makes the days of hot rodded flatheads seem like not-so ancient history. We're gonna need some sound bytes when you're done. You're gonna make up an alternate "KXR100" lettered seat for this based on that box too, right?
Edit: The more I look the more I dig the atmosphere of these pics. That's one trick stand you've got the bike resting on!
The plug is not stock, it was required after the stock cam journals were hogged out. The roll pin you see may serve dual purposes, but is absolutely there to stop lateral movement of the cam. Might serve up some oil will look closer. It’s a trick setup. I was hanging around John’s shop at the time he was building these bike, he was always doing cool stuff!Damn. I need to get some line boring tools. Is that plug there stock or is that an artifact of machining out the bearing journal? And does that little bump on the closest journal feed oil Into the ball bearing on that side?!
Thank you.Had a quick google for ya
It seems you might be in luck finding a piston
Can’t be 100% sure if this is the right one
High Performance Top End. Qty: 1 Set Of 2. May Fit Others. CB500K2A MOTORCYCLE, JPN, VIN# CB500-2100001. CB500K1A MOTORCYCLE, JPN, VIN# CB500-2000001. CB500A MOTORCYCLE, JPN, VIN# CB500-1000001.www.ebay.com.au
also found this
NEW complete 114cc BIG BORE KIT FOR ALL HONDA TRX90's. Aluminum cylinder with 56mm big bore. 53mm piston kit. PART STARTING 54MM ABOVE WILL NEED TO BORE THE CRANKCASE FOR FITTING IT. This kit is comparable quality to "Genuine Honda" parts.www.ebay.com.au
Got no issues with that. Any recommendations for where to source?if you’re comfortable adjusting end gap you could totally just get blanks for ~the right size bore.