Vintage BMW Motorcycle Owners

Something for consideration... On my /7, I replaced the original top end with a kit from Siebenrock. The stock compression went up from around 9.0:1 to about 9.5:1 with the kit. I was a little uncomfortable with that high of a compression ratio...I didn't want to consider dual plugging, etc. The sup...

If your pan is steel, the magnets will simply latch on to the pan. As for Kieth Patchett's suggestions, I personally would not do the ride keeping the engine at 5000 RPM...or whatever RPM you wanted. The engine and components are all very mechanical and they will have vibration interactions with eac...

I don't think the strainer is going to get all that clogged. I don't remember but I guess I pulled the pan off at least once, maybe at 500 miles. I would fit a number of super magnets in the bottom of the pan to collect any of the ferrous bits that show up.

Welcome to the forum and enjoy the ride! Generally, the BMW manual is good info. I suppose if you ask 5 owners how to break in an engine, you'll get 7 different answers!! My thoughts are: - the first engine start after rebuild is probably the most critical. Once the oil begins to glaze up on the cyl...

On my R69S rebuild I used 0.5mm gaskets.

The small donut departed my R25/2 shaft a number of years ago. I bought a replacement, but haven't gotten around to putting it on...technically, it has to be pressed on once the shaft is disassembled. I decided to try a small plastic ring from a juice container...cut a slit and slipped it over. Prob...

Be sure and use the search boxes Snowbum has all over the tech page. I put in "speedometer" and the page in question is the second one in the list.

Snowbum's table on this page suggests it's for a R90/6 in the mid 1970s. Should be paired with a 34/11 final drive.

https://bmwmotorcycletech.info/ringgears.htm

Check out this post by Vech in the recent past: https://vintagebmw.org/forum/viewtopic.php?p=84990#p84990 I have had this problem for a while...I have a fairing on so not so easy to get to the headlight shell to check things out. What I do is when I'm close to my driveway and the end of the ride, I ...

My R69S seems to be harder to start warm like after a gas stop. What I do is to leave the petcock off and open the throttle wide open. I then kick the lever 5-6 times to clear the combustion chamber. Finally, leaving the petcock off, and hand off the throttle, I push the key down and then kick the s...