I just bought an 09 XT with 25,000 miles. Amazingly clean bike. Seller said it stopped running on him during a ride. He took it to the shop and it has no compression in the rear cylinder.
I scoped it when I brought it home and it looks like the exhaust valve in the rear cylinder kissed the piston. Edge of the valve is curled enough to prevent it from seating. So that would explain the lack of compression. I slowly turned it over and noticed I was not getting any movement on any of the valves.
I asked a friend of mine who is more knowledgeable about Buell / Harley land. He said it’s been 17 years since he was a tech so he might be fuzzy, but it sounds to him like a possible broken pinion shaft which caused the valves to hang which resulted in the contact.
I realize at this point I’m going to have to drop the engine and pull theads and check everything out, but I’m not familiar with this pinion shaft situation. If there’s a problem with the shaft, how much of a PITA is the repair?
I have a spare ‘09 engine from the salvage 12R, but if the engine repair on the XT isn’t too disasterous I’d rather repair it.
I scoped it when I brought it home and it looks like the exhaust valve in the rear cylinder kissed the piston. Edge of the valve is curled enough to prevent it from seating. So that would explain the lack of compression. I slowly turned it over and noticed I was not getting any movement on any of the valves.
I asked a friend of mine who is more knowledgeable about Buell / Harley land. He said it’s been 17 years since he was a tech so he might be fuzzy, but it sounds to him like a possible broken pinion shaft which caused the valves to hang which resulted in the contact.
I realize at this point I’m going to have to drop the engine and pull theads and check everything out, but I’m not familiar with this pinion shaft situation. If there’s a problem with the shaft, how much of a PITA is the repair?
I have a spare ‘09 engine from the salvage 12R, but if the engine repair on the XT isn’t too disasterous I’d rather repair it.
