When I got my R27/LS200 from Germany, it came with an old BMW tankbag. I have put a photo album titled "Tub's Singles" in the Photos section. Other than damage...
Upon further inspection of my 2 rods and pistons I found a couple of things. Both rods have the same part # cast on the side. The 18mm wrist pin rod has a...
Hello John, I think that in all the r25 series the crank and conrod are the same, ie they are interchangeable. The cylinders differed slightly. The r25/3...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the bmw-mono-club group. File : /BMW1...
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Dec 2, 2003 11:36 am
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My R27's old home was at 4400ft, but its new home is at sea level. Any recommendations for jetting changes? The bike will be hauling a Steib LS200 sidecar. ...
... I upped my R27's main jet from the 120 that Bing rebuilt the carb with, to a 125 just because I wanted something richer and cooler. I have been very happy...
... Assuming it runs well at 4400 ft., you could also try raising the needle. Make sure you remember the current position if it doesn't work properly. Try the...
Both of my R25/3 engines don't have a timming chain tensioners. Some of my books show them as having them. Are they to be there or should I add one? Both...
Hi John, That's normal, as R 25/3 didn't have any chain tensioner. It was first originally mounted on the R 27. But, good news, you can add a chain tensioner...
John, ... They originally didn't have one. ... You can add one without any problem. Originally they were only mounted in the R27 engine, but can be used on...
... Hello, Yes, the chains were different lengths to compensate for manufacturing tolerances. I never had to fit one. I always fit a standard chain and...
Thanks everyone, I will be adding a tensioner w/new chain. Probably standard length but I'll check for paint dots. There is a paint dot on the cam, don't...
John, ... That's what we're here for... :-) ... Many advise to discard of the slinger and put in a new one, they're quite cheap. The reasoning behind this is...
PA3GYU <pa3gyu@a...> wrote: << Many advise to discard of the slinger and put in a new one, they're quite cheap. The reasoning behind this is that they are very...
Back to the timing chain issue. According to my factory service manual, blue = short, red = medium, green = long. The paragraph below that info says to use the...
I strongly recommend to change the slinger each time you open the engine and have to remove it, exactly for the reasons Allan gives. I found my R 27's slinger...
You're on the right track! And what you say is also correct. It's strongly recommended to add the groove and the second hole, as it helps to cool the skirt and...
Does anyone have pictures of such a modified piston/cylinder? I would like to know where to put my saw and drill bit..... Ser ... Does anyone have pictures of...
I hope i don't overload anyone with this - my apology in advance if i do - here are some pics and some measurements (not exact but close) -- Bob Harper ...
Re: [bmw-mono-club] timing chains 'n piston skirtsHowdy, In a multi bike deal I ended up with some of a R25/3. I have a frame with front forks, most of a motor...
The first that I heard of the extra lubrication and cooling for the r25 series was on the Huggett forum some time ago. I just did a search for that information...
The first that I heard of the extra lubrication and cooling for the r25 series was on the Huggett forum some time ago. I just did a search for that information...
... Here is some of that thread in digital form: The single cylinder BMWs constantly received a power increase with every model from 12hp with the R24 to 18hp...
... Different part numbers aside, the inserts appear identical and so are no doubt interchangeable. The difference is probably in their resistance. I have old...
After I posted my original question, I noticed my damper unit is labelled Boge R26. So there must be some differences, probably in the damping rate as Allan...
