Leaderboard

Just returned from Colorado with my 2017 cub 750. I was very concerned since my last 3 sxs were Polaris. Overall things went well. Excluding any altitude over 11500 ft. Removed the screen at 10000 ft and the tube to the intake at 11250. From there on up could not get over 4k or 18mph. Rode and handled great. Other than cracking the cheap excuse of an exhaust system the machine did excellently. Did 100 miles the first day out.

@Travis Thanks. The piston comes with the bore info per pic. Looks like bore needs to be 76.50mm or .050mm larger than piston diameter.

Finished the cracked hood / cowl repair. I roughed up the plastic surface with a wire wheel, cut a piece of metal much larger than the crack, roughed up the metal surfase with a cut off wheel then bonded the two together with Bondo's Bumper Repair Kit from Amazon. Looks good but only time will tell if it will hold up.

No I do not have any specs. I ordered the manuals and they are due tomorrow.

On further inspection of the cylinder walls after dingleberry honing (which worked really great by the way) I saw one cylinder wall has some distress most likely caused by water sitting in the cylinder of a year or more. It was difficult to see withou tmagnification but it was there and it was significant. So I will receive one .020" oversize piston tomorrow then run the new piston and block up to Millenium Technologies in Plymouth, WI to overbore the bad cylinder. I'm sure this is where the oil burning was coming from. Regarding the 295psi compression test the only area of heavy carbon deposits or any deposits in the cylinder for that matter was in the dimples of the exhaust valves. They were complete filled in. Now that they are cleaned out and I am anxious to take another reading. I used this down time to clean and coat the inside of the gas tank, bleed brakes, install new tires and repaint. Looks like the engine will go back together the first week of Sep and I should be back on the road by mid Sep. Will install a windshield and roof top too. Thanks for the follow up. Mike