Join Date: May 2007
Location: Pflugerville, TX, USA
Re: Major teardown
My mistake. Yes, complete engine rebuild although I am reusing most of the parts.
Reason: long story... I burned a piston (#2) through improper fuel map (2000 ecu with 05 engine) OR vacuum leak. Jury is still out on why. So basically bought a new piston and all the seals and gaskets. Changing out the ECU and putting an 05 exhaust on it too.
One thing I am doing is making sure all the pistons are exactly the same weight. Why you ask? Well, it turns out BMW has two pistons you can buy. They are based on their size, either A or B. But, they also have pistons designated by weight (+ or -). Problem is, there is no way to order a + or -. You get whatever comes.
Well, as luck would have it, my engine has + weight pistons and the one the dealer sent me was a -. I am going to weigh them all and shave a little off the heavy ones to make them all match.
I was thinking about doing a port job on the head while I had it apart but I figured I have enough work to do already with trying to get the bike back together for my upcoming trip.
Pace (Pawkee) Bonner
2000 K1200LT (hybrid)