BMW K bikes (Bricks)

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1Back to top Go down    Water temp. 1985 k100 on Sun Jan 13, 2019 11:08 am

timo27

timo27
Silver member
Silver member
Hi all its been a while, i have just a quick question on aftermarket water temp. senders did i read (or did i dream about it ?) you could put a sender unit into the water pump drain plug hole??? if so what is the thread size i would need for the sender. many thanks Tim

    

2Back to top Go down    Re: Water temp. 1985 k100 on Sun Jan 13, 2019 11:15 am

Two Wheels Better

Two Wheels Better
Moderator
Moderator
You most definitely do not want to place a plug into the drain plug hole. You need a switch that threads into the second hole on the combined oil/water pump. Unscrew the Allen head plug sitting next to the oil pressure switch (12x1.5) and look at its threads (it measures 10x1.0). Another method is to look up the item in ETK because, as in this case, the dimensions are spelt out for you in the description, as is the correct part number. I use www.realoem.com. You don't mention a year or model so it's guesswork as to the exact bike you have there, tho' they're common to many models. I recommend placing this info in the signature section of your profile.

Here's a link to an 8V K100:

http://www.realoem.com/bmw/enUS/showparts?id=0503-EUR-11-1986-K589-BMW-K_100_RS_83_0502,0503,0513_&diagId=11_1818



Last edited by Two Wheels Better on Sun Jan 13, 2019 11:16 am; edited 1 time in total


__________________________________________________

1987 K100RS, '89 K100 w/K1100RS engine, '93 Framed K11/K12 engine 'Big Block', '09 K1300GT, '07 K1200R, '95 R100 Mystic & '77 R75/7.

    

3Back to top Go down    Re: Water temp. 1985 k100 on Sun Jan 13, 2019 11:15 am

duck

duck
Life time member
Life time member
Yes. 10x1.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

4Back to top Go down    Re: Water temp. 1985 k100 on Sun Jan 13, 2019 11:24 am

Point-Seven-five

Point-Seven-five
Life time member
Life time member
The BMW OEM sender has a flush face that does not extend into the coolant passage. When I was looking for a non-BMW replacement it seemed that nearly every other sender had an extended probe that I was afraid would block flow or possibly contact the wall of the passage.


__________________________________________________
Present:
1994 K75RT
1991 K100RS

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
    

5Back to top Go down    Re: Water temp. 1985 k100 on Sun Jan 13, 2019 2:17 pm

timo27

timo27
Silver member
Silver member
@Two Wheels Better wrote:You most definitely do not want to place a plug into the drain plug hole. You need a switch that threads into the second hole on the combined oil/water pump. Unscrew the Allen head plug sitting next to the oil pressure switch (12x1.5) and look at its threads (it measures 10x1.0). Another method is to look up the item in ETK because, as in this case, the dimensions are spelt out for you in the description, as is the correct part number. I use www.realoem.com. You don't mention a year or model so it's guesswork as to the exact bike you have there, tho' they're common to many models. I recommend placing this info in the signature section of your profile.

Here's a link to an 8V K100:

http://www.realoem.com/bmw/enUS/showparts?id=0503-EUR-11-1986-K589-BMW-K_100_RS_83_0502,0503,0513_&diagId=11_1818
Thanks for the info the age and model stated in the title

    

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