98000 miles on 103" Stage II finally have a problem, leaking main crank shaft seal into primary but not that bad yet might last few more thousands miles. It's been ridden like I stole it .Any body with 107" engine have a reliability like that then I might be interested in upgrading to 107" on my next motor.

 

That's pretty good. So far most I've heard on a 107 is 44,000.

 

I have 2 years and ~ 12k miles on an S&S 106" BB kit and 551 cams. Bike never misses a beat. Stump puller.

Thinking about S&S 89 cc heads this winter.

 

I did my 107" build in 2011, at this time I have over 30K miles on this build. When riding this summer it was going through a qt. of oil every 700 miles or so. That's really not that bad, the MOCO probably wouldn't warranty it on a new bike, but I like to do better than that. I have purchased a 117" motor that I got a good deal on from Frank Drago, so this winter that will be going in the RG. The only thing I am apprehensive about is fuel mileage. The 107" got between 40 and 45 mpg on a regular basis. I don't know if a 117" will come close to that. I am planning on freshening the 107" and putting it up for sale.