Boxerworks.com

Have a look at the parts list section 31 and diagram #31_0362 item 2 which is the fork seal and there does seem to be what they list as a spacer ring.


https://shop.maxbmw.com/fiche/DiagramsM ... d=10232024

Thanks for your reply. 12.47 volts without the tender. As soon as I push the key in it drops to 12.11. Nothing happens when I push the starter- no buzz, no crank, no nothing! The fact that the voltage only dropped to 12.11 volts is an indication that the starter wasn't being connected to the batter...

Of more interest is the angle cut end of the tube. That concept only works for airflow across the tube, like the air tubes on the bottom of the carb slides. I don't see the benefit of an angle cut with airflow along the tube? The angle cut might induce turbulence to help mix the crankcase vapours w...

Boertjie wrote: ↑Mon Oct 14, 2024 5:01 am
However, the oil light stays on after cranking for 10 seconds.

Welcome back

Can't say I've ever timed it with a stop watch but it does seem to take at least 10 secs of cranking after an oil change for the light to go out and that's spinning the engine over with the plugs out.

I've only ever re-torqued the head once in 18 years and that was when I'd slackened them off to do the rocker arm clearance. They were checked again after 500 miles then left well alone. You hear stories of some engines having the studs pulled during manufacture at the factory and therefore supplied...

hi, I am rebuilding the heads on my R80/7 1980. i would like to change the valve seats so i can use unleaded. on the parts sites i can only find exhaust seat. For models listed with 38mm exhaust valves ( Suitable for unleaded fuel ) do i need to do the inlet seat also? Thanks Billy The mechanism th...

4 ohms is close enough to the 3.4 ohms rotors are supposed to be. Most multi meters are not that accurate at very low resistance readings and will typically over read by some fraction of an ohm. Try measuring the resistance when shorting the two probes together and then subtract that from your rotor...

If the battery has been hot enough to melt something I would be very cautious with it. At the very least it's lifespan has been compromised and if the heat wasn't caused by overcharging which would seem not to be the case, then the likely cause is some internal damage.

Airheads don't use shunt regulators. Instead the VR is in series with the rotor winding and varies the average current through rotor to maintain the required charging voltage which for a standard VR is 14 volts. As you have found, the measured charging voltage will vary depending on the state of cha...

Isn't it the case that pretty much all new rings can have end gaps that are bigger than BMW's own spec. If that's true new standard size rings may not help. Using rings the next size up after using a file to bring the gap into spec has been done many times, even as a matter of course by Airhead prof...