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105 miles now - Second oil change and checked and adjusted the valve clearances again, they were just SLIGHTLY out.
If you are wondering why I did an oil change so soon? Well, if you have ever done a hard break in, one key thing with the process is frequent oil changes, not just to flush as much metal particulate as possible, but also because new engines tend to have a bit more blowby until the rings seat, and this blowby saturates the oil with fuel. Fuel in oil makes the oil less lubricating.
At 105 miles, I could start to smell hints of fuel/hydrocarbon saturation in the oil on the dipstick. I was going to change it anyway, but it is just one of many reasons why.
That said, took it out for a quick little 5 mile run, and it's always amazing how good fresh oil feels.
In other news, bike has picked up a LOT more torque and power since day 1. I am going to do a compression test on my next day off and compare it to the numbers I had after the break in run.
On the carb side of things, as the motor breaks in more I have noticed that at light steady throttle at lower speeds I get a little hesitation with the engine hot. Plug chop during this condition revealed it is a little lean. I am going to pick up a 32.5 and 35 pilot jet and try those out. So far the 110 main with middle needle is spot on, but with a larger pilot I may need to move the needle down.
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