Vintage BMW Motorcycle Owners

Hello,
What generic compressor tool are you using? And where do you buy it?
I know that not everyone out there will fit our heads with the valves hanging at an angle.
Nylon staffed sockets does not work for me, either.
Thanks.

Sorry no.
Too late for that and the workshop guy does not remember.

I hope this information will help all people in the future. I learned this the hard way, it turns out others did too https://vintagebmw.org/forum/viewtopic.php?f=7&t=18309 . When I brought my engine heads to the workshop, with all the assemblies shiny new (valves, springs, guides, etc.), I didn'...

Where can I find the factory instructions for this data? I would like to get my hands on such a chart regarding tolerances of reaming new guides for a bike that lives in a warm climate. Is this information available at all, or does a workshop perform the reaming according to some personal knowledge?...

Thanks Tommy. Well, I already hurried and asked Jan from Salis BMW and this is his interesting answer: Hello Michael, I understand what you are saying and theoretically you are right, but you are looking for a problem that was never considered a problem by BMW. - the cylinder heads for a R51/3 and R...

Thanks a lot guys. I will jump into it as soon as possible. Lots of good info and ideas. The pistons aren't new. I don't have a reducing piece on the carb's flange, just a typical thick heat insulator (some pressed fabric, maybe micarta?). Should I get them? Where are they available? Can't see them ...

Thanks, I have no idea what main jets are there. Are they stamped? How can I know? I use Bing's 1/24/159 and 1/24/160 bought new from Huggett ca. 10 years ago. Another question: By changing these jets - is your intention to run the engine with a leaner mixture? And if indeed so - isn't there a dange...

I'm near Tel Aviv, at sea level.

I came back to update: it seems that the problem was indeed a lack of fuel volume. I filled the tank and went for a ride on the highway, leaving the in-line fuel filters in place. At 100 km/h I stopped turning the throttle... Thank you all for your responsiveness and willingness and help. Appreciate...

I ask because right now the tank is almost empty, and it is easier to empty it in favor of disassembling the fuel tap. If there's a chance that's the reason, I'll fill up the tank and go for a test drive. If the chance is slim, I'll drain it and start disassembling that tap and filters that sit on t...