Bosch parts

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It is the bottom (Jumo?) sensor that the factory fitted on my last service, they said the earlier brass body sensor was too fragile. I did near-stall on the ride home from the service but that could have been anything as I haven't noticed anything different in the way the bike runs since the change.
 

Bluey72e

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It is the bottom (Jumo?) sensor that the factory fitted on my last service, they said the earlier brass body sensor was too fragile. I did near-stall on the ride home from the service but that could have been anything as I haven't noticed anything different in the way the bike runs since the change.
Yes bottom one in the pic, noticeably its stainless and has a much wider working temperature range and more durable, I believe even the BOSCH replacement was only to 130'c (max)

• For temperatures from -50 to +270 °C (temporarily up to 300 °C)
• Vibration-resistant construction
• Application areas: commercial vehicles, construction and agricultural machinery, motors, compressors, and railway technology
• Various plug connectors; locked to ensure contact
• Protection type up to IP67/IP69 according to DIN EN 60529 (IP69K according to DIN 40050)
 
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Good Info , I will install the Jumo when I get them . I suspect that the change was made mostly to increase the lifespan of the head temp sensor .
 
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Hi you all,

Warning, JUMO temperature sensors are available in 2 versions:
-50 to +150°C
-50 to +270°C (briefly 300°C)

It is likely that the new JUMO temperature sensors have a thermal range equivalent to the old sensors, that is to say from -50°C to +150°C... Otherwise, the information provided to the electronic injection box would be different for the same temperature.

Page 4/5 of the document (sorry, in French...)

https://www.jumo.net/attachments/JUMO/attachmentdownload?id=7925&filename=90204000T10Z002K000.pdf

Best regards
 

comet

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Hi you all,

Warning, JUMO temperature sensors are available in 2 versions:
-50 to +150°C
-50 to +270°C (briefly 300°C)

It is likely that the new JUMO temperature sensors have a thermal range equivalent to the old sensors, that is to say from -50°C to +150°C... Otherwise, the information provided to the electronic injection box would be different for the same temperature.

Page 4/5 of the document (sorry, in French...)

https://www.jumo.net/attachments/JUMO/attachmentdownload?id=7925&filename=90204000T10Z002K000.pdf

Best regards

What's the part number for the -50 to +150 one? When I looked on the Jumo web site some time ago I could only see the -50 to +270 one which is part no 902040. The English version of the spec sheet is here:

http://www.jumo.co.uk/products/temp...with-plug-connector-902040.html?parentId=3397

Seeing the different temperature range I raised a query in a previous post, but there wasn't any response at the time.

https://www.accessnorton.com/posts/433521/
 

comet

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Ignore that - I just found the info in the data sheet small print where it shows the two temperature ranges. So you would need to order the 370 one, although I'm not sure if anyone has determined how hot the cylinder head gets.

upload_2020-3-2_21-19-7.png
 
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This is from the web , a Royal Enfield Air Cooled single cylinder 500cc engine.

265F

The temperature of cylinder head reaches 220 to 265F depending on riding speed and air temperature. Exhaust port is hottest reaching 330F. But engine oil in sump is always cooler than engine head. Oil temperature was about 149F. Feb 6, 2015

130 Deg C = 266 Deg F . The temp sensor is at the back of the head on the intake side . So Bosch may be ok ?
 
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As the engine is air cooled and we have no fans to control the ECU only needs to know when the engine is cold. We never had any issues with the Bosch sensor while we were supplying the ECUs to Norton.
 
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I wonder if the change of sensors came about as a result of testing at Norton, or was it MCT?

-Knut
 
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I wonder if the change of sensors came about as a result of testing at Norton, or was it MCT?

-Knut
My 2018 had it's head temp sensor changed at last service to the stainless bodied one purely because, according to the service tech, the old ones were fragile and prone to breaking during service, not for any other specific issue/reason.
 
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PM Richard-7 or iwilson . They are available that I am sure of. And Genuine Bosch too.
 
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I wonder if the change of sensors came about as a result of testing at Norton, or was it MCT?

-Knut
I would suggest that if Genuine Bosch Head Temp sensors were used by Norton instead of knock offs there would never have been any problems. Same goes for fuel injectors , Cam position sensor , black oil cooler , ignition coil pack and the list I am sure goes on . What I thought at the start was we were paying for a premium motorcycle with premium parts .
 
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I also doubt very much that it was MCT ! I will bet that MCT didn't want anything to do with Norton by this time and you can make book on that .
 

Voodooo

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Can someone refresh my memory.
Are we able to currently purchase all the sensors for our bikes?
I’d be interested in buying a handful of each and every sensor needed for our bikes to keep as spares.

Head temp
Air temp
Cam
Crank
Side stand switch
Etc.
 
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This is a list we should work on asap... The crank sensor I have but was OEM supplied. I will take photos and others can also help searching for them. Same thing with throttle position sensor. This should all be available somehow/somewhere. TPS is very similar to HD .. If Norton sourced it , its out there.
 

Claudio

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Visually, the accelerator position sensor is the same as that of my Guzzi Griso
 
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