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1Back to top Go down   Water Pipes Empty Water Pipes Tue Feb 23, 2021 4:49 pm

egredos

egredos
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Hello K100 friends,

I want to install a temp sensor directly plugged in one of the two following water pipes (4 and 7 - 4 being ma favourite location for the sensor):
Water Pipes 17121412
Unfortunately, in order to order the inline sensor adapter I need to know the precise inside diameter of these water pipes.

Anybody knows? I found on internet 32 mm and 22 mm but this dimensions do not seem to by good (undersized).

Thanks for your help folks.


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Ride Safe!! Water Pipes 112350



1990 K100RS 16V Cafe Racer
#0200117
Seville (Spain)
    

2Back to top Go down   Water Pipes Empty Re: Water Pipes Wed Feb 24, 2021 2:33 am

Suzi Q

Suzi Q
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Are you aware there is already a threaded hole in the water pump for a temp sensor?

Also, hose 4 is for bypassing the radiator whilst the engine reaches temperature - I'd guess there'll be very little flow once that happens, so it wouldn't be an ideal location for indicating coolant temp.

Ebay item 184305200300 screws straight into that hole - from memory the thread is M10x1.0 whereas aftermarket sensors are more commonly 1/4" NPT, I will check though.

EDIT: Yep it is M10x1.0 The pic shows its location on the lower LH side of the pump casing - the one in the pic actually has an OE sender screwed in (an option on some models) instead of the more common blanking plug. It's the smaller of the two senders you can see; the other is the oil pressure switch.

Water Pipes Img_3613


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Sometimes I'm not really Suzi Quatro.
    

3Back to top Go down   Water Pipes Empty Re: Water Pipes Wed Feb 24, 2021 4:08 am

egredos

egredos
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Hello Chris,

Thanks for the tip. You are right. I should seriously consider this solution as I is the less invasive.

Regards.


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Ride Safe!! Water Pipes 112350



1990 K100RS 16V Cafe Racer
#0200117
Seville (Spain)
    

4Back to top Go down   Water Pipes Empty Re: Water Pipes Wed Feb 24, 2021 6:32 am

Corkboy

Corkboy
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chris846 wrote:

Water Pipes Img_3613

Chris,
good idea to get a cat scan before installing the water pump.


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Regards,

Corkboy '87 K100RS SE (The black one - one of the two bikes I'm sorry I sold)
             '87 K100RS 0140995 (Gone)
             '97 K1100LT 0188024 (Gone)
             '08 K1200GT Wedge - but still a K
             '08 Transalp 700
    

5Back to top Go down   Water Pipes Empty Re: Water Pipes Wed Feb 24, 2021 6:36 am

Suzi Q

Suzi Q
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Life time member
Little sod likes to have two breakfasts this time of year; won't leave me alone.

The kids still laugh about the time she walked across my keyboard and bid on something on Ebay  Mad


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Sometimes I'm not really Suzi Quatro.
    

6Back to top Go down   Water Pipes Empty Re: Water Pipes Wed Feb 24, 2021 8:16 am

Dai

Dai
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Did she win it?


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1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

7Back to top Go down   Water Pipes Empty Re: Water Pipes Wed Feb 24, 2021 8:37 am

Suzi Q

Suzi Q
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Unfortunately no. I was waiting to snipe it, with a bid ready. She bid early and someone else outbid me before I could rescue the damn situation. Sad to say, but the truth is that the kids were more amused by my reaction than by the cat's uselessness at bidding.


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Sometimes I'm not really Suzi Quatro.
    

8Back to top Go down   Water Pipes Empty Re: Water Pipes Wed Mar 10, 2021 5:24 pm

roach374

roach374
Silver member
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I'm confused: Isn't there already a temp sensor / thermistor plugged into the return housing? (can't see the number in OP's diagram, but it's next to #16). Are you looking for something else?


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1993 K75 standard
    

9Back to top Go down   Water Pipes Empty Re: Water Pipes Wed Mar 10, 2021 6:27 pm

Laitch

Laitch
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@roach374 wrote:Isn't there already a temp sensor / thermistor plugged into the return housing? (can't see the number in OP's diagram, but it's next to #16). 
That sensor helps control the fan and communicates with the engine management system. The implication in the responses here is that the original poster might be looking just to add a signal for a water temperature gauge that would be fairing-mounted or mounted on the handlebar. The combo pump has a theaded hole to receive such a sensor; in absence of one, a drain plug is mounted.


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1995 K75 81,000 miles
Water Pipes Usa-lo10
    

10Back to top Go down   Water Pipes Empty Re: Water Pipes Wed Mar 10, 2021 11:47 pm

Two Wheels Better

Two Wheels Better
Moderator
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I find a good water pipe lessens the harsh.


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1970 R60/5, OZ '77 R75/7-R100, '85 K100'87 K75C, OZ '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R'04 R1150RT, '05 K1200S, '06 K1200R, '07 K1200R, '09 K1300GT & 2013 R1200RT-Polizei  - Beemers owned still or sold.

~We all believe what we want to believe in - Rob Dickinson
    

11Back to top Go down   Water Pipes Empty Re: Water Pipes Thu Apr 01, 2021 10:53 pm

gabriel

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@roach374 wrote:I'm confused: Isn't there already a temp sensor / thermistor plugged into the return housing? (can't see the number in OP's diagram, but it's next to #16). Are you looking for something else?

Hi

The sensor you are referring to is part of the fuel injection and engine management system.
The sensor at the bottom of the water/oil pump is part of the instruments water temperature set up.


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;BMW; 1984 BMW k100..frame number 6228?
1992 BMW K75s
    

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