andyborris
Posted a lot
Freedom is just another word for nothing left to lose.
Posts: 2,215
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I'm using the original Triumph water temp gauge in my conversion, the electric sender for this gauge used to sit in the steel cylinder head.
The sender now takes it readings from the top hose.
According to the gauge, the engine now overheats!
I'm pretty sure the engine isn't overheating, the hand on the hoses test didn't leave any scars, in fact, I could keep my hand on the top hose.
So my question is, could changing the Temp Senders position cause it to give a false reading? Or is it just a 40 year old sender picking today, (the day I drive the car for the first time) to fail?
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The second one!...that's just luck.
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Is the sender a two pin or a single pin sender?
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Andy,
I guess you must have run a separate earth wire or you wouldn't be getting anything?
My first thought is to check that the gauge/sender are still powered via the voltage regulator as it'll read well high if not. Beyond that, it's possible that the BMW lump has a higher temp thermostat so the water is actually hotter but I'd have thought that would be the difference between running at 2/3 rather than 1/2 - not enough to put you in the red?
How does it go? Should we be starting a sweep on the average life of your diffs?
Cheers
Nick
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1967 Triumph Vitesse convertible (old friend) 1996 Audi A6 2.5 TDI Avant (still durability testing) 1972 GT6 Mk3 (Restored after loong rest & getting the hang of being a car again)
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v8ian
Posted a lot
Posts: 3,825
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modern engines do tend to run hotter than older style units. I would be checking the thermostat for 2 things, 1, its working and 2, what temp is on it compared to the original, that should give you an indication of what the temp should be on the gauge.
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Atmo V8 Power . No slicks , No gas + No bits missing . Doing it in style. Austin A35van, very different------- but still doing it in style, going to be a funmoble
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bortaf
Posted a lot
Posts: 4,549
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If it's in a rubber hose and or isolated from the block i'd say make sure it has a propper earth first, any resistance will alter the reading at the gauge.
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Last Edit: Jan 1, 2013 17:39:42 GMT by bortaf
R.I.P photobucket
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andyborris
Posted a lot
Freedom is just another word for nothing left to lose.
Posts: 2,215
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It's a single pin sender. The thermostat is a 80'c one, didn't think to check the voltage regulator, that would tie into engine not feeling hot, but the needles on max, thanks! Only went for a quick, very naughty run round the block, (no tax, mot or insurance! ) I think the diff is fairly safe, the skinny tyres (185) just spun every time I opened the throttle more than halfway! Didn't get out of 1st! Just this and a fuse blowing on the rad fan every time the fan starts, to fix and it's MOT time.
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you've not earthed the gauge by mistake have you?
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andyborris
Posted a lot
Freedom is just another word for nothing left to lose.
Posts: 2,215
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you've not earthed the gauge by mistake have you? No, the alloy tube thingy in the top hose is earthed and that bit of the wiring loom is untouched, pretty sure Nick has hit the nail on the head. I haven't refitted the voltage regulator properly, I believe the regulator earths through it's body and mine's just hanging from it's wires! The fuel gauge is reading a bit high too, which also uses the same regulator.......
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That'll be it then ;D. Go get that MoT Nick
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1967 Triumph Vitesse convertible (old friend) 1996 Audi A6 2.5 TDI Avant (still durability testing) 1972 GT6 Mk3 (Restored after loong rest & getting the hang of being a car again)
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