12-13-2014, 04:11 PM
The Z1 has 63000 miles on it. It had a rebore with .5mm o/size pistons before I retired it to the shed 20 years ago. I dropped the cylinders in for a light hone and reused the pistons and rings. all the inlet valves had to be replaced due to stem wear and all the guides and seals were replaced. Had 2 valve seats replaced, new cam chain and idlers, and a new neutral switch. Everything else inside the engine was ok but it may need some new clutch plates down the track. All the carbs were stripped cleaned and adjusted. I had some issues when I first assembled the motor which made no sense. No2 carb was puffing back from the engine and when the engine was revved it would stay at about 3000 rpm and not return to idle. Turned out the timing chain was one tooth out on the cams. Now it starts and runs perfectly just like new...no engine noises at all. I would have liked to put the K87 gold seal Dunlops back on it but they are no longer available here in Oz so I had to go with the K81/TT100 tyres.