Bike Quit At Work

[montmil]

The only part I can't find, is the spring clip, there is a hole for oil to drain back into the sump, right under the area where the chain was doubled over on itself on the right side by a rub block. 

I also had that "little fish" jump down the honey hole during a cam chain replacement on the '81 R65. Used an extension magnet thingy which must have been the correct bait as I caught it. I don't think they can swim too far in that sump oil.

From that point on, I jammed paper toweling into every orifice.

[Bob_Roller]

I've got a small ' magnet on a stick ' at work, going in tomorrow to get it, currently on vacation, finishing up week three of six .

[Bob_Roller]

The parts are now in Los Angeles,  being processed by the US Postal Service .

[Bob_Roller]

Parts showed up at 1515 today .
I'll get started on reassembling tomorrow .
Weather is cooperating, 72 F,  22 C , this afternoon .
A neighbor was present, when I opened the package up and made the comment on the rubber tubes that go between the carb and head and the intake tube to air box, he said next time, just get a radiator hose the correct I D size and make your own .
never thought of that before .

[Barry]

...just get a radiator hose the correct I D size and make your own .never thought of that before .  

It's a nice idea but I wonder if the type of rubber would stand up to modern fuel.

Worth a try.

[mrclubike]

...just get a radiator hose the correct I D size and make your own .never thought of that before .  

It's a nice idea but I wonder if the type of rubber would stand up to modern fuel.

Worth a try.

It would work in a pinch but it may  get soft and swell up

[Tony Smith]

...just get a radiator hose the correct I D size and make your own .never thought of that before .  

It's a nice idea but I wonder if the type of rubber would stand up to modern fuel.

Worth a try.

It would work in a pinch but it may  get soft and swell up

If the ones fitted to the wife's r80 start doing that I'll let you know. Had my money's worth though, been there since 1987.

[montmil]

During an "Airhead" Volkswagen engine rebuild, I stopped in at NAPA and bought large diameter, reinforced rubber hose that connects the carb manifold to the aluminum intake assembly on the cylinder heads. Actually did that on both the VDub engines I built. Never a problem and more economical than OEM bits.

As the fuel, be it mogas -or in my case, avgas, is atomized as it moves through the intake tract, there is very little chance of 'soaking' the rubber hose and causing any distortion or deterioration.

That said, I did buy OEM BMW connector hoses for one of the BMW Airheads. Neatly cutting that large diameter hose is a PITA. I ended up using a fine toothed blade in a bandsaw.

[Bob_Roller]

The rubber tubes that I got from Moto-bins, are not OEM parts, the OEM part is  thick with multiple layers of fabric, these look like they are cut from radiator hose material thin and one layer of fabric .
But they do have Conti on them, I assume Continental was the manufacturer .
There is a part number on these parts and they are BMW numbers, they come up in the parts catalog, so BMW has changed this part from what it has been since I got this bike .

[suecanada]

I have just read this thread as LRB is at that same age now that these breakdowns can happen to him while on one of my extended journeys. I want to learn as much as possible about what things can go wrong that brings one to a complete halt at the side of the road. This one was a biggy and a show stopper. Some are easy fixes; some are not  :'(obviously. The philosophy I need to grasp in a case like this on the road far from home would be I guess  :-?..."I get to meet some new people and maybe they'll become lifelong friends".

Another thought comes to mind too: Maybe having a IPad or superphone on board  would be good because I could contact you all on the forum when on the road! That is a comforting thought!

[Bob_Roller]

Sue, if you not a member of BMWMOA, or Airheads, you may want to look into them, the BMWMOA has a book that comes out every year that has a list of members that are willing to assist a rider broke down in their area .
At least in the western part of the US, there are large areas that do not have mobile phone service outside of heavily travelled roads .

[Bob_Roller]

Got the bike 95% reassembled yesterday, messed up my lower back in the process, took today off, I should finish it up and start the engine tomorrow afternoon .
I tried my method, of using an old master link installed from the front side to get the chain lined up, then putting the new master link in from the back side, had the link installed and the retainer clip on in about 2 minutes .
If you lay down in front of the engine it makes getting the timing marks lined up quite easily, very visible this way  .
I also found a suitable substitute for a piston ring compressor, I forgot that the ring compressor I had, wouldn't work on this type of engine .
I found a coupling for drain pipes at a local home improvement store, it's a very fine corrugated sheet metal band with two worm gear hose clamps riveted to it .
If I can get a picture to post, I'll get one up, but I'm having issues with photos .

[montmil]

I found a coupling for drain pipes at a local home improvement store, it's a very fine corrugated sheet metal band with two worm gear hose clamps riveted to it.

Timely info, Bob.

I'll soon be replacing the original rings in my '81 R65 so I'll pick up the Big Box Beemer Ring Compressor before I begin. After doing a pushrod tube seal job on the bike, the scars on my fingers are a reminder of the difficulty in compressing those buggers by hand.

And yes, I should have done the rings, "while I was in there."

Any ideas on cleaning the ring lands? Some hard carbon build up in the lands will need to be carefully removed.

[Ed Miller]

Bob, is that the plumbing device that would use a length of rubber hose inside the metal for sealing leaks?  

Neither do I like bleeding all over my rings and pistons.  I can't remember what compressor I bought but it worked.  One that comes apart so you can fit it around the rod.  

[Tony Smith]

Any ideas on cleaning the ring lands? Some hard carbon build up in the lands will need to be carefully removed.

A hand cleaning product called "Simple Green" worked for me - just lather it all over the carbon encrusted bit of the pistons, put in a sealed baggie over night and the next day rinse off under hot water. What carbon remains is easily removed using plastic paint scrapers/glue applicators.

The other alternative is to soda blast them as the baking soda will not harm alloy, but takes the carbon straight off. Simple green is less fussing about and you do not get wife/neighbours complaining about the white dust that get is everywhere.