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Re: R90s won’t idle after carburetor rebuild
Hi Scott,
When you say that you made a “minor rebuild”, what did that involve? Did you remove or replace the jets for instance. Please elaborate a little.
I take it that the slides were removed, perhaps that throttle stop screws as well for cleaning?
Wild guess without knowing more, check that the throttle stop screws are properly adjusted. Also, invest in a carb synchrometer / balancer to help take out the guesswork. Cheap and available on Amazon or eBay.
The experts will tell you they do it by ear. Well good for them, but too much trial and error for this occasional mechanic.
Best regards, Kirk
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On 5 Jan 2022, at 11:52, Kris And Scott via groups.io <svbliss2012@...> wrote:
?Hi Kirk
Won’t idle with throttle off.
Still no clues
Thanks
Scott
Scott
Beware of the man who works hard to learn something, learns it, and finds himself no wiser than before.
-Kurt Vonnegut
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Re: R90s won’t idle after carburetor rebuild
Hi Kirk
Won’t idle with throttle off.
Still no clues
Thanks
Scott
Scott
Beware of the man who works hard to learn something, learns it, and finds himself no wiser than before.
-Kurt Vonnegut
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Re: R90s won’t idle after carburetor rebuild
Hi Scott, I’m not sure what a minor rebuild of a Dell’Orto might consist of, but perhaps it falls short of what is actually needed.
Following Kirk’s line of questions, did your R90S idle before the minor rebuild? What prompted you to do the minor rebuild in the first place? Without more information it would be hard to troubleshoot the problem.
I’d suggest that you do a proper full rebuild (and hope that your wire probing didn’t damage anything).
Here’s a link to Snowbum’s Dell’Orto rebuild info that will take you through the job.
As a side note, way back in a previous lifetime, I used to do form of minor carb rebuilds on a ‘52 Chevy pickup I owned. It consisted of starting the engine and holding the throttle open to get the RPMs up pretty high and then spraying some long forgotten brand of aerosol carb cleaner all over the carb and into the venturi. Didn’t really do anything, but it was quick and dirty and gave me a feeling of accomplishment… for ten seconds, but hey, I was 23 years old. Mit freundlichen Grü?en/With best regards,
Dennis C. O'Dell denniscodell@... Mobile: +49 (175) 855 6663 Home: +49 911 277 45370 Skype: diggertfu Hochstrasse 19 Nürnberg 90429 Germany ? "Laughter and Tears are both responses to frustration and exhaustion. I myself prefer to Laugh since there is less to do afterwards." - Kurt Vonnegut
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On Jan 2, 2022, at 10:10 PM, Kris And Scott via groups.io <svbliss2012@...> wrote:
? Hi group Happy New Year!
After a minor rebuild of my Dellortos, I am unable to get any kind of idle. I’ve removed the carbs and using a thin wire ensured the idle circuit was clean and open. I’ve also used carb spray to soak carb passages. Still no idle. I’ve checked points gap and valve clearance. All seems within spec. I’d appreciate any suggestions on what I’ve missed or anything else I can try.?
Thanks for any input.?
Scott
1976 R90s
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Re: R90s won’t idle after carburetor rebuild
Hi Scott, Still looking for clues?
?
By no idle do you mean: a) running too fast, or b) won’t run with throttle off ?
?
Kirk
?
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From: [email protected] <[email protected]>
On Behalf Of Kris And Scott via groups.io
Sent: Sunday, 2 January 2022 22:11
To: [email protected]
Subject: [R90SWORLDNET] R90s won’t idle after carburetor rebuild
?
Hi group Happy New Year!
After a minor rebuild of my Dellortos, I am unable to get any kind of idle. I’ve removed the carbs and using a thin wire ensured the idle circuit was clean and open. I’ve also used carb spray to soak carb passages. Still no idle. I’ve checked points gap
and valve clearance. All seems within spec. I’d appreciate any suggestions on what I’ve missed or anything else I can try.?
Thanks for any input.?
Scott
1976 R90s
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R90s won’t idle after carburetor rebuild
Hi group Happy New Year!
After a minor rebuild of my Dellortos, I am unable to get any kind of idle. I’ve removed the carbs and using a thin wire ensured the idle circuit was clean and open. I’ve also used carb spray to soak carb passages. Still no idle. I’ve checked points gap and valve clearance. All seems within spec. I’d appreciate any suggestions on what I’ve missed or anything else I can try.?
Thanks for any input.?
Scott
1976 R90s
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Re: EME electronic ignition
This is the one I use on most Airheads and the one I installed on my 74 R90S - Euro Motoelectrics -?.
Scott.
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Re: EME electronic ignition
Where did you buy it from?
On Sun, Jan 2, 2022, 1:45 PM Martin Johnson < Dermodad@...> wrote: I think the EME optical ignition is the best upgrade I've done to my '75 SS R90S. No problems whatsoever. 5 stars. I used my stock coils and the EME-recommended plug wires and caps.
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Re: EME electronic ignition
I think the EME optical ignition is the best upgrade I've done to my '75 SS R90S. No problems whatsoever. 5 stars. I used my stock coils and the EME-recommended plug wires and caps.
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Re: EME electronic ignition
There was no interference problem when Guenther installed the EME ignition on my bike.
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Re: Choke Nipples Needed
Hi Mac,
Is this the right one?
https://www.euromotoelectrics.com/product-p/chokenipple368.htm
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Re: Dell Carb Top in Metal?
I used my old carb tops, you can't tell the difference?
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-------- Original message -------- From: Mac Kirkpatrick <drbeemer73@...> Date: 13/10/2021 3:48 pm (GMT+04:00) Subject: [R90SWORLDNET] Dell Carb Top in Metal?
Does anyone know of a source?for 2 of the metal carb tops for our Dell'Orto Carbs, again, again, in metal?
Please email me directly at?
Thanks guys!
Mac Kirkpatrick Glenmoore, PA
"After all, what is adventure, but inconvenience, properly regarded?"
C. Donahue
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Re: Dell Carb Top in Metal?
I believe the threaded hole is smaller than original, I ordered new elbows from Motorworks and they were smaller diameter than originals, ended up using original elbows with original tops to add to my new dellorto carbs.
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-------- Original message -------- From: Kirk Ratzel <eur90s@hotm dellorto elb
ail.com> Date: 14/10/2021 10:18 pm (GMT+04:00) Subject: Re: [R90SWORLDNET] Dell Carb Top in Metal?
There are 2 metal types:
Best regards, Kirk Ratzel On 13 Oct 2021, at 13:48, Mac Kirkpatrick <drbeemer73@...> wrote:
? Does anyone know of a source?for 2 of the metal carb tops for our Dell'Orto Carbs, again, again, in metal?
Please email me directly at?
Thanks guys!
Mac Kirkpatrick Glenmoore, PA
"After all, what is adventure, but inconvenience, properly regarded?"
C. Donahue
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Re: Dell Carb Top in Metal?
There are 2 metal types:
Best regards, Kirk Ratzel
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On 13 Oct 2021, at 13:48, Mac Kirkpatrick <drbeemer73@...> wrote:
? Does anyone know of a source?for 2 of the metal carb tops for our Dell'Orto Carbs, again, again, in metal?
Please email me directly at?
Thanks guys!
Mac Kirkpatrick Glenmoore, PA
"After all, what is adventure, but inconvenience, properly regarded?"
C. Donahue
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Re: Choke Nipples Needed
Best regards, Kirk Ratzel
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On 14 Oct 2021, at 16:33, Mac Kirkpatrick <drbeemer73@...> wrote:
? Ok guys, a conundrum:
A friend is telling me the nipples that the choke cable go into at the choke lever for our R90Ss are unique to the R90S and are threaded whereas nipples for other applications are not threaded.?
Max BMW says this is the part number, and: "Nipple for choke cable, R50/5; R60/5; R60/6; R60/7; R90S."
Part number is 13 23 1 260 368
Note that is says this part number is also for the R90S.
Any advice? And, I need two of them.
Thanks,
Mac Kirkpatrick Glenmoore, PA
"After all, what is adventure, but inconvenience, properly regarded?"
C. Donahue
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Re: Choke Nipples Needed
Here in Europe, Stark sells thes nipples. Please take a look, and tell me if they are the correct ones... Antonio
Il giovedì 14 ottobre 2021, 18:29:45 CEST, Mike Vosdingh <mvoziowa@...> ha scritto:
I’m often able to get older BMW motorcycle parts through ecstuning.com out of Wadsworth, OH.? They list the threaded nipple part number 13 23 1 260 368 as available with a ship date of Oct. 20.? They’ve been very good with their dates/availability and decent price in my experience. ?
? Using realoem.com, it appears that nipple wasn’t unique to the R90S, however: ? Part 13231260368 was found on the following vehicles: Digging further into this (still on realoem.com) and using a 1978 R100RS for comparison with a 1975 R90S (since I’m fortunate to have both!), it seems they share the same choke lever assembly itself… 13 23 1 260 191.? This is very interesting. You think there’d be a difference since the R100RS does call for a different nipple (13 23 1 256 019) in conjunction with a simple M5 nut (07 11 9 921 038).? You’d need the nut for adjusting purposes if the choke lever isn’t threaded, right? ? My guess is since it looks like the Dell’Orto carb is also threaded on the CARB end of the choke cable, they just used the same nipple on BOTH ends to eliminate confusion. ?Or, maybe they stopped tapping the choke lever for the threaded nipple for some time period to save cost ?and substituted the different nipple and nut instead to retain the adjustment capability.? Pure speculation on my part but the RS-type nipple/nut combo was widely used: ? Part 13231256019 was found on the following vehicles: This makes it all the more intriguing (what isn’t when you dig deep on BMW stuff, though…car OR motorcycle!) ? ? If it were me, and if the official nipple proved unavailable from ECS or MAX BMW, I’d try substituting the 13 23 1 256 019 nipple with the corresponding M5 nut to achieve the same functionality. ?It wouldn’t be “original”, of course, but I’d think it would function the same.? The unknown is whether the choke cables, which are also different part numbers, would fit the barrel of the nipple.? That’s something I can’t tell from info I have available right off (the RS isn’t close by at the moment or I’d look).? I’d venture they’d work, though. ? Hope you find a solution! ? Mike ? ? ? ? ?
From: [email protected] [mailto:[email protected]] On Behalf Of Mac Kirkpatrick
Sent: Thursday, October 14, 2021 9:33 AM
To: R90SWORLDNET
Subject: [R90SWORLDNET] Choke Nipples Needed ? A friend is telling me the nipples that the choke cable go into at the choke lever for our R90Ss are unique to the R90S and are threaded whereas nipples for other applications are not threaded.? Max BMW says this is the part number, and: "Nipple for choke cable, R50/5; R60/5; R60/6; R60/7; R90S." Part number is 13 23 1 260 368 Note that is says this part number is also for the R90S. Any advice? And, I need two of them. ? "After all, what is adventure, but inconvenience, properly regarded?"
C. Donahue
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Re: Choke Nipples Needed
I’m often able to get older BMW motorcycle parts through ecstuning.com out of Wadsworth, OH.? They list the threaded nipple part number 13 23 1 260 368 as available with a ship date of Oct. 20.? They’ve been very good with their dates/availability and decent price in my experience. ?
? Using realoem.com, it appears that nipple wasn’t unique to the R90S, however: ? Part 13231260368 was found on the following vehicles: Digging further into this (still on realoem.com) and using a 1978 R100RS for comparison with a 1975 R90S (since I’m fortunate to have both!), it seems they share the same choke lever assembly itself… 13 23 1 260 191.? This is very interesting. You think there’d be a difference since the R100RS does call for a different nipple (13 23 1 256 019) in conjunction with a simple M5 nut (07 11 9 921 038).? You’d need the nut for adjusting purposes if the choke lever isn’t threaded, right? ? My guess is since it looks like the Dell’Orto carb is also threaded on the CARB end of the choke cable, they just used the same nipple on BOTH ends to eliminate confusion. ?Or, maybe they stopped tapping the choke lever for the threaded nipple for some time period to save cost ?and substituted the different nipple and nut instead to retain the adjustment capability.? Pure speculation on my part but the RS-type nipple/nut combo was widely used: ? Part 13231256019 was found on the following vehicles: This makes it all the more intriguing (what isn’t when you dig deep on BMW stuff, though…car OR motorcycle!) ? ? If it were me, and if the official nipple proved unavailable from ECS or MAX BMW, I’d try substituting the 13 23 1 256 019 nipple with the corresponding M5 nut to achieve the same functionality. ?It wouldn’t be “original”, of course, but I’d think it would function the same.? The unknown is whether the choke cables, which are also different part numbers, would fit the barrel of the nipple.? That’s something I can’t tell from info I have available right off (the RS isn’t close by at the moment or I’d look).? I’d venture they’d work, though. ? Hope you find a solution! ? Mike ? ? ? ? ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Mac Kirkpatrick
Sent: Thursday, October 14, 2021 9:33 AM
To: R90SWORLDNET
Subject: [R90SWORLDNET] Choke Nipples Needed ? A friend is telling me the nipples that the choke cable go into at the choke lever for our R90Ss are unique to the R90S and are threaded whereas nipples for other applications are not threaded.? Max BMW says this is the part number, and: "Nipple for choke cable, R50/5; R60/5; R60/6; R60/7; R90S." Part number is 13 23 1 260 368 Note that is says this part number is also for the R90S. Any advice? And, I need two of them. ? "After all, what is adventure, but inconvenience, properly regarded?"
C. Donahue
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Re: Choke Nipples Needed
Thanks Denny. But again, I am being told the ones for the R90S model are unique, unlike the source you sent me as well as Max BMW parts. I am being told these will not fit the R90S model.
Thus my conundrum.
Mac Kirkpatrick Glenmoore, PA
"After all, what is adventure, but inconvenience, properly regarded?"
C. Donahue
On Thu, Oct 14, 2021 at 10:45 AM Dennis O'Dell via <denniscodell= [email protected]> wrote: Mac, If you cannot find them in the U.S. they are available in Germany.
Mit freundlichen Grü?en /?Best Regards, Dennis C. O'Dell Hochstrasse 19 90429 Nürnberg Germany denniscodell@...Mobile: +49 175 855 6663 Home: +49 911 277 45370 Skype: diggertfu Blog:? "Smart people learn from?everything and everyone,?average people from their?experiences, stupid people?already have all the?answers."— Probably not?Socrates
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Re: Choke Nipples Needed
Mac, If you cannot find them in the U.S. they are available in Germany.
Mit freundlichen Grü?en /?Best Regards, Dennis C. O'Dell Hochstrasse 19 90429 Nürnberg Germany denniscodell@...Mobile: +49 175 855 6663 Home: +49 911 277 45370 Skype: diggertfu Blog:?http://www.diggersmotorradadventures.com/ "Smart people learn from?everything and everyone,?average people from their?experiences, stupid people?already have all the?answers."— Probably not?Socrates
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Ok guys, a conundrum:
A friend is telling me the nipples that the choke cable go into at the choke lever for our R90Ss are unique to the R90S and are threaded whereas nipples for other applications are not threaded.?
Max BMW says this is the part number, and: "Nipple for choke cable, R50/5; R60/5; R60/6; R60/7; R90S."
Part number is 13 23 1 260 368
Note that is says this part number is also for the R90S.
Any advice? And, I need two of them.
Thanks,
Mac Kirkpatrick Glenmoore, PA
"After all, what is adventure, but inconvenience, properly regarded?"
C. Donahue
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Re: Dell Carb Top in Metal?
Last week I discovered a 1974 R90/S will be coming up for auction/sale at Kaplan Cycles at The New England Motorcycle Museum in Rockville CT. This bike isn't completely original but looks like a worthy candidate for anyone interested in an R90/S. The bike has been repainted, has electronic ignition, dual spark plug heads, performance rear shocks, etc.
Ted
On Wednesday, October 13, 2021, 07:48:29 AM EDT, Mac Kirkpatrick <drbeemer73@...> wrote:
Does anyone know of a source?for 2 of the metal carb tops for our Dell'Orto Carbs, again, again, in metal?
Please email me directly at?
Thanks guys!
Mac Kirkpatrick Glenmoore, PA
"After all, what is adventure, but inconvenience, properly regarded?"
C. Donahue
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Kris And Scott
Dennis O'Dell
Scott Blaylock
Steve
Martin Johnson
