Wow...that's a rich history! Did it really pay to spend that much for a new engine verses just buying another used bike?I am pleased with my bike, but it has not all been a bed of roses. First, my bike is a 1993 "beta bike" (#168 off the line). BMW made a number of changes to the bikes as they produced and learned about how they were functioning in the real world.
It came with the 1st year "noisy in neutral" transmission (which, btw, was perfectly reliable for the 40k miles I put on it). I was offered, and took advantage of, the "silent recall" BMW had on the 1st year trannies, but the 2nd generation trannies had real problems. Mine would pop out of 1st under power hard enough to go right on into 2nd. So I got another free transmission, which was solid for 110k miles (about 160k miles total). At that point, it started slipping briefly in 2nd gear under power, and so I bought a refurb transmission, which now has over 60k miles on it.
The engine was always good and only gave me surging symptoms when the TBs were out of sync, usually shortly before a scheduled service, if at all. As I mentioned, it has always delivered high 30s to low 40s gas mileage. The bike has never been babied and I have been to a number of track classes with it. At about 150k miles, the front U joint on the driveshaft blew up.
In 2002, with a bit over 160k on the odo, I shipped the bike to Germany, where I keep it today at a friend's place. At 182k miles, while I was cruising down the Autobahn at about 110mph/6,000rpm, one of the pistons broke a skirt, cocked in the bore and in the process destroyed both conrods. Everything underneath the heads was pretty much trashed, but I was able to buy and have installed a 1997 R1100RT engine with 30k kms (~18k miles) on it for about $2500.
So, that engine now has almost 60k miles on it. It runs fine and smooth. And it gets high 30s to low 40s mpg.