warning! - lurker coming out of the shadows... I have been hanging out here for about a year (with one post under my belt!) and trying to talk myself into asking some questions of the collective wisdom regarding crankshaft repair.
A couple of years ago on a beautiful North Carolina fall day i went for a ride on my '73 roadster (for ever referred to as the "Thanksgiving Day Incident") and managed to get about 3 miles before oil stopped making its way to the engine. Why that happened is the subject of many other threads (can you say "anti-wetsump valve").
The drive side connecting rod seized up, and I am fortunate I was not going very fast and was able to pull in the clutch and stop.
After stripping the engine down, the drive side connecting rod has a small crack at the base, and the drive side journal has bearing smeared all over it. I have another set of rods, but my concern is about the crank.
1. unless there is additional damage i cannot see, can this crank be saved?
2. if it can be saved, what needs to be done to it? (just have the journal cleaned?, turned down if scored?, magnefluxed?)
3. can any competent automotive machinist handle this type of problem? (we do have some capable engine builders in NC, at least i keep hearing about something called NASCAR?)
This is not a race bike, but a well used rider - definitely not a show bike! I am fortunate that i have another '73 (an Interstate) to keep my Norton needs in check, but with the 2011 INOA rally in NY my brother (swooshdave) is hoping to come out to NC and ride up the coast with me. I would love to have 2 Nortons runnning for the trip...
A couple of years ago on a beautiful North Carolina fall day i went for a ride on my '73 roadster (for ever referred to as the "Thanksgiving Day Incident") and managed to get about 3 miles before oil stopped making its way to the engine. Why that happened is the subject of many other threads (can you say "anti-wetsump valve").
The drive side connecting rod seized up, and I am fortunate I was not going very fast and was able to pull in the clutch and stop.
After stripping the engine down, the drive side connecting rod has a small crack at the base, and the drive side journal has bearing smeared all over it. I have another set of rods, but my concern is about the crank.
1. unless there is additional damage i cannot see, can this crank be saved?
2. if it can be saved, what needs to be done to it? (just have the journal cleaned?, turned down if scored?, magnefluxed?)
3. can any competent automotive machinist handle this type of problem? (we do have some capable engine builders in NC, at least i keep hearing about something called NASCAR?)
This is not a race bike, but a well used rider - definitely not a show bike! I am fortunate that i have another '73 (an Interstate) to keep my Norton needs in check, but with the 2011 INOA rally in NY my brother (swooshdave) is hoping to come out to NC and ride up the coast with me. I would love to have 2 Nortons runnning for the trip...