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PostPosted: Sun Dec 10, 2017 8:28 pm 
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Bit odd I know, but Im fitting the stock type sensor in the bottom hose where its cooler (once the sat is open) and It'll read low. So instead of getting a proper sensor from Robsport, where can I get one that reads higher? It may not be perfect but if its near half way when up to temp it'll be visually pleasing :)

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PostPosted: Sun Dec 10, 2017 8:45 pm 
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There is not much sense in putting the sender in the bottom hose, since it will just read cold till the stat opens. A faulty stat will boil the engine and the guage will STILL be reading cold!
Best to put the sender in the water gallery next to and below the stat (in your case, in the engine backplate) I'd use a capillary type graduated in degrees for accuracy. Then you will KNOW what's going on!

Steve

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PostPosted: Mon Dec 11, 2017 12:36 am 
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There is not much sense in putting the sender in the bottom hose, since it will just read cold till the stat opens. A faulty stat will boil the engine and the guage will STILL be reading cold!
Best to put the sender in the water gallery next to and below the stat (in your case, in the engine backplate) I'd use a capillary type graduated in degrees for accuracy. Then you will KNOW what's going on!

Steve

Sorry bout post duplication, snow induced power cuts are playing hob with my computer!

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'73 2 door Toledo with Vauxhall Carlton 2.0 8v engine (The Carledo)
'78 Sprint Auto with Vauxhall Omega 2.2 16v engine (The Dolomega)
'72 Triumph 1500FWD in Slate Grey, Now with RWD and Carledo powertrain!

Maverick Triumph, Servicing, Repairs, Electrical, Recomissioning, MOT prep, Trackerjack brake fitting service.
Apprentice served Triumph Specialist for 50 years. PM for more info or quotes.


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PostPosted: Mon Dec 11, 2017 9:35 am 
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Yes Steve I understand that but for now I want to see the temp from the bottom as I dont want to remove the plate yet. Its just a temporary thing. Not much room left in the head plate at the mo.
So which sensors read high? :)

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Tony

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PostPosted: Mon Dec 11, 2017 9:49 am 
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The original one I got from ANG reads hot, 3/4 on the gauge at normal operating temperature (measured with a laser thermomiter). The robsport one reads better but still a bit hot. I think that's down to the new voltage stabilizer more than anything.


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PostPosted: Mon Dec 11, 2017 10:46 am 
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Thanks James I'll try one of those.

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Tony

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PostPosted: Mon Dec 11, 2017 12:17 pm 
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If you MUST have one, the one Rimmers were selling some time ago had a rep for reading high. I believe it was actually the part number for a series Landrover.

Steve

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'73 2 door Toledo with Vauxhall Carlton 2.0 8v engine (The Carledo)
'78 Sprint Auto with Vauxhall Omega 2.2 16v engine (The Dolomega)
'72 Triumph 1500FWD in Slate Grey, Now with RWD and Carledo powertrain!

Maverick Triumph, Servicing, Repairs, Electrical, Recomissioning, MOT prep, Trackerjack brake fitting service.
Apprentice served Triumph Specialist for 50 years. PM for more info or quotes.


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PostPosted: Mon Dec 11, 2017 6:12 pm 
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Another way of getting the water temp; gauge to read higher would be to swap the 10V nominal stabiliser for a 12V electronic one. ( 7812 from Maplins ) would probably be O.K. except the voltage overhead at 13.5V input is a bit low. The trouble is the fuel gauge will read high as well.
To give you an idea of what the gauge increase in reading would be it would typically rise from 1/2 way to about 3/4. Here is a part of the article I wrote on it recently.
HTH,
Tony.


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PostPosted: Mon Dec 11, 2017 8:53 pm 
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i did think of your excellent post Tony, but the fuel gauge being higher would give me false happiness :)

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Tony

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PostPosted: Mon Dec 11, 2017 9:43 pm 
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Then fit one behind the temp gauge just for that gauge.

Jeroen.

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PostPosted: Mon Dec 11, 2017 9:47 pm 
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Yes thats an option too. For a tenner I'll try a rimmers sender first. :)

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Tony

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PostPosted: Mon Dec 11, 2017 9:48 pm 
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Quote:
Then fit one behind the temp gauge just for that gauge.

Jeroen.
Yeah, they're cheap as chips (sorry couldn't resist). :oops:


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PostPosted: Mon Dec 11, 2017 11:20 pm 
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'Car builder solutions' may do a adjustable one.

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PostPosted: Fri Dec 15, 2017 10:23 am 
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You could also consider Gallaleo's soution of putting a shunt resistor in parrallel with the sender, i.e. down to ground.

The problem with that is it changes the linearity of the guage a bit - it will have more effect at the lower end of the scale than at the top. So, it will move the reading up, but compress the normal range into the higher region of the guage.

The advantage is, given you can solder a couple of wires with lucar connectors onto a potentiometer (about 5 kOhm sounds right), it's cheap, don't affect the fuel gauge, and fully adjustable to give the reading you want at normal running temp.

Graham

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PostPosted: Fri Dec 15, 2017 10:50 am 
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cheers Graham, I ve got a rimmers one to try for now. Once Im ready for the ecu to be fitted I'll have another sensor dedicated to the ecu so at least the ecu will know whats going on :)

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Tony

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