BMW K bikes (Bricks)

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1Back to top Go down   Coolant Temp Gauge  Empty Coolant Temp Gauge on Mon Feb 23, 2015 6:50 pm

floyd

floyd
Life time member
Life time member
Hi gang,

Using the stock K1100 coolant temp sensor in my K100´s water pump....Am I able to use any aftermarket temp gauge or will only the BMW one work?

I have a BMW one here but its really old and the sight glass is cloudy and yellow. It does not appear that the unit can be dismantled.


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K100 with lots of K1100 bits - mongrel of a thing...
    

2Back to top Go down   Coolant Temp Gauge  Empty Re: Coolant Temp Gauge on Mon Feb 23, 2015 9:44 pm

Point-Seven-five

Point-Seven-five
Life time member
Life time member
I am by no means an expert, but I recently installed a BMW K1100 temperature gauge on my 75RT.  It would not work with a VDO sender as the resistance curves are different.  As a result I had to use the grossly overpriced BMW sender. 

I suspect an aftermarket gauge will not work and you will need to use an aftermarket sender.  Not a big deal, because you can remove the old harness from the BMW gauge and you can buy an aftermarket gauge and sender for less than the price of the BMW sender let alone a gauge.  Both gauges should have the same basic connections (ie. +12v, ground, temperature signal, and night lamp) coming in through the harness.


__________________________________________________
Present:
1994 K75RT
1991 K100RS
1988 K100RS SE

Past:
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

3Back to top Go down   Coolant Temp Gauge  Empty Re: Coolant Temp Gauge on Tue Feb 24, 2015 1:12 am

floyd

floyd
Life time member
Life time member
Excellent, thanks.

Can anyone tell me what size thread the sender has? Do the sender units tend to be of a standard size?

THIS  looks alright, but im not sure about that sender. From memory the stock one does not protrude into the pump that much?


__________________________________________________
K100 with lots of K1100 bits - mongrel of a thing...
    

4Back to top Go down   Coolant Temp Gauge  Empty Re: Coolant Temp Gauge on Tue Feb 24, 2015 1:45 am

Inge K.

Inge K.
VIP
VIP
@floyd wrote: Can anyone tell me what size thread the sender has?

M10 x 1,0.




@floyd wrote: From memory the stock one does not protrude into the pump that much?


Coolant Temp Gauge  2v_110


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

5Back to top Go down   Coolant Temp Gauge  Empty Re: Coolant Temp Gauge on Tue Feb 24, 2015 1:46 am

Point-Seven-five

Point-Seven-five
Life time member
Life time member


__________________________________________________
Present:
1994 K75RT
1991 K100RS
1988 K100RS SE

Past:
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

6Back to top Go down   Coolant Temp Gauge  Empty Re: Coolant Temp Gauge on Tue Feb 24, 2015 3:08 am

charlie99

charlie99
VIP
VIP
I think I remember seeing motorworks advertising used senders (IN USEABLE CONDITION ) ...for quite cheep money Floyd

my experiences with different meters  leaves me to comment that not all meters expect the bmw sensor ..."auto meter" can be made to show close to accurate with external additional resistance

but the bmw meter is expanded scale across the working range ...and is a very good design feature


opps addition

perhaps otto instruments could replace the sight glass ..those guys have specialised tools and the knowledge and patience .....ask first  cause I don't know his prices ,,,, just a thought as I recon it could be a better secondary  (cheaper) option to also get a bmw guage off secondhand from motorworks

good luck mate


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OCoolant Temp Gauge  Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

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