Recent Posts

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51
BMW Technical Q&A, Primarily R65 / Re: leaky flat top carb
« Last post by TomHoldom on April 14, 2026, 11:34:09 AM »
Is it possible to re-install my new floats without dismounting the carbs - bit tricky to get the float needle back in I imagine.....
52
BMW Technical Q&A, Primarily R65 / Re: Siebenrock 860
« Last post by Tiedie on April 14, 2026, 04:43:36 AM »
R65LS Siebenbrock and major maintenance: it was fired up he said it felt strong.Like @Kelvin and @dogshome said it's running lean so he's going to see if he's got some main jets at work. He's thinking a 142 main jet will be right but I told him to get both and see which one is better.
At $15.00 for the 142 and $5.00 for the 145 it's not that big of a deal.
Ran a quick Dyno last night and said 17 more HP.
Top graph blue line is stock r65 and red is now.
Told em I've been jonesing to ride. :laugh:
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BMW Technical Q&A, Primarily R65 / Re: BMW R65 `84 ignition coil connection problem
« Last post by cerkas on April 13, 2026, 07:24:25 AM »
Hello,
I am coming back with question related to cables connection to the coil.
I connected cables as showed on the picture, but motorcycle does not start.
The starter operates. Does anyone can explain whether cables are connected correct?
Also, what could be the problem?

p.s. The coil in the picture is Bosch 0 221 500 200.
54
Chit-Chat / Re: Online Guests
« Last post by Justin B. on April 12, 2026, 11:50:57 PM »
I figure most are bots and crawlers but that amount seems pretty high!
55
BMW Technical Q&A, Primarily R65 / Re: leaky flat top carb
« Last post by Bob_Roller on April 12, 2026, 02:15:12 PM »
I found an old float been sitting for years it weighs 13 grams .
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BMW Technical Q&A, Primarily R65 / Re: leaky flat top carb
« Last post by TomHoldom on April 12, 2026, 09:48:22 AM »
ok, thanks - probably worth changing both sets while I'm at it ?
I was looking at getting from UK's Motobins - they give this part number:  BMW: 13 11 1 254 766 . Is there any way to check this the right part. My carb ref is 64/32/2040
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BMW Technical Q&A, Primarily R65 / Re: leaky flat top carb
« Last post by donbmw on April 12, 2026, 09:18:33 AM »
Can?t tell you the weight of new floats. Just going by the age of your bike and the looks of the floats I would change them. I have changed mine multiple times on my bikes in the 40 plus years of owning them. The last time I I changed them I went with the alcohol safe floats from Bing. You have to call them for these floats to get the one like the stock floats.
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BMW Technical Q&A, Primarily R65 / leaky flat top carb
« Last post by TomHoldom on April 12, 2026, 02:53:42 AM »
Hi,
I have leaky carb. (1979 R65)
with the float bowel removed lifting the float to horizontal stops the flow, so does that mean my float may need replacing (I have flat tops). Does anyone know what they should weight - mine is around 18 or 19 g. I tried to test the float action by holding is in petrol but wasn't convinced this was a good technique.
Any help appreciated.
Tom
59
Trading Post / SOLD! 1980 BMW R65 FOR SALE
« Last post by Redbaron on April 11, 2026, 12:11:46 PM »
SOLD! 1980 BMW R65 ? 43,000 miles, 2nd owner, documented history, rebuilt front brake, new master cylinder, new stainless steel brake hoses, rebuilt front forks, new steering head bearing, new Dyna electronic ignition and coils, new wiring harnesses, new spark plugs and wires, original Bronco Brown paint, clean tank, new fuel petcock, new throttle cables, rebuilt Bing carbs, new fuel hoses and filter, new battery, new front tire, rear tire like new, BMW tool kit, original Krauser luggage and rear rack. NC Title. Very good original classic Beemer with great updates. Videos of bike running and riding available. Located in Stanfield NC. $4300 OBO
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BMW Technical Q&A, Primarily R65 / Re: disassembling the drive shaft
« Last post by Steve on April 09, 2026, 07:46:05 PM »
The stock snap ring is round in cross section but the groove in the retainer it fits into, in my case at least, is rectangular. I'm riding it now with the Harbor Freight snap ring.
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