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I'm starting to build up a new motor for my G1 track bike. I have gathered a clean core motor (28k, almost all highway commuter miles, great compression), G1 kit intake cam, and a few other items. I tore the motor down yesterday to send the head out for a clean/beadblast/mill/port/rebuild and I noticed a few things.
1. the cam chain is nice and smooth, no kinks, and the adjuster was in the middle of its range. I will replace this chain and add a manual tensioner
2. the cylinders have great hatch but the tops of the bores have darkened areas where the rings change direction. There is no perceptible ridge in this area. Should I be concerned?
3. I will be replacing the oil pickup and the clutch as I noticed quite a bit of fiber/steel sludge in the sump.
4. I will inspect the generator. This is an 04 motor.
Is there anything else I should examine? Should I consider re-ringing the pistons? I did perform a leakdown test on this prior to tear-down and didn't have much on the rings, just on the valve seals which is to be expected at this mileage.
1. the cam chain is nice and smooth, no kinks, and the adjuster was in the middle of its range. I will replace this chain and add a manual tensioner
2. the cylinders have great hatch but the tops of the bores have darkened areas where the rings change direction. There is no perceptible ridge in this area. Should I be concerned?
3. I will be replacing the oil pickup and the clutch as I noticed quite a bit of fiber/steel sludge in the sump.
4. I will inspect the generator. This is an 04 motor.
Is there anything else I should examine? Should I consider re-ringing the pistons? I did perform a leakdown test on this prior to tear-down and didn't have much on the rings, just on the valve seals which is to be expected at this mileage.
