Is there a difference in the temp senders supplied for minis?

Mine currently has a red plastic insulator but I find that the temp guage sits just under the hot line, and believe me it isn't getting that hot. I've seen pictures on website of ones with black insulators stating that they fit all Australian Minis, but then again I've seen the same info about the red ones too. My dash is the 3 guage Clubman dash (technically 4, but you know what I mean). So peoples.... Which do I need, or have I got a different problem like the voltae stabilizer being naff?

Sounds like you may have an 88 deg thermostat fitted.

There are actually 2 different senders, the other has a green insulator. The Red one you have is compatable with an 82 deg thermostat, and I think - not 100% sure - the green one is for 88 deg thermostat. They only seem to sell the red ones here.

<EDIT> Just checked, there are actually 3 different senders. I suspect the one you have is the GTR101 and you may need the GTR143. The other one goes under P/N GTR185.

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How does the thermostat affect the temp sender? Or am I missing something here?

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The GTR185 is definately the wrong part (different connector)

I'm pretty sure I had this exact same problem back in the 90's I got a temp sender from Repco and it did the same thing and I'm sure it had a red isolator.

Looks like I need to find a GTR143 and try it.



Yeah I'm wondering this too.

They are 'calibrated' so that for each different thermostat temp (eg 82 or 88 or whatever) the needle of the gauge will sit on normal.

<EDIT> Just to be sure there is no other problem, check with a decent capillary gauge too.

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I found no temp gauge reading difference going from a recent red sender to an old black one.
Gauge is the stock MiniMatic/Mini-K `C-H' variety.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

In the UK they fitted the GTR101 (Red these days, but I'm pretty sure the early ones were black) up to 1975, along with 82 deg thermostat. From 75 on, 88 deg thermostats were fitted along with the GTR143 sender (which I think is green). I don't know much at all about the GTR185. All these senders were screwed in to the cylinder head.

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I dont get it. When my engine is hotter i want to know how hot. and also know how close to the bad end of the scale I am. Or does it still have the same redline?

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OK. Depending on which sender you fit, the middle 'normal' will either be 82 degrees (GTR101) or 88 degrees (GTR143). I suspect that fitting the GTR143 will also push up the temp indicated by the red zone, however keep in mind that these are far from a calibrated lab instrument and are really only there to say 'I'm OK' or 'I'm NOT OK', just a little better then the red light they fitted in to base model holdens and the original temp gauges as factory fitted in to the Mini Deluxe and Mokes.

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Maybe then you should fit the full scale temp gauge with capilliary type sender unit. As GT says, the std. gauges are not exactly precision instruments. (C-N-H)

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1967 Cooper S - new front bearings to do.
1965 Cooper S shell - Slow progress. No time or money!
1966 Deluxe- next rustoration!
Mk 2 & XJ6 Jags. Less said the better.

TEMP TRANSMITTER 'S'AND deluxe mini 1964-1969 GTR104
These are the ones listed for Aus cars

Description

most minis with dual gauges upto 1969 that had oil/temp gauges fitted used this type when fitted with a voltage stabiliser. Minis before 1964 except some super deluxe and pre Sept 1964 cooper s used GTR102


TEMP TRANSMITTER 59-63 when no gauges or volt stabiliser GTR102

Description

any early car which had a fuel gauge that just flicked straight to the reading denotes the period this sender unit was used.Only early Mk1 pre 1963 super deluxe models,plus a few vans and basic saloons after.Cooper s up to Sep1964 Wnen the petrol gauge needle moves slowly across it had a voltage stabiliser fitted and used GTR104.


TEMPERATURE TRANSMITTER 1970 on same as GTR143 GTR101

Description

Fitted in the cylinder head from 1970 on until its demise on the 1990 Coopers this part was the same as GTR143.One number was original fitment and the other supplied as the spare part by Unipart.

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A recent study found the average Aussie walks about 900 miles a year
Another study found Aussies drink, on average, 22 gallons of alcohol a year
That means, on average, Australians get about 41 miles per gallon

Kind of makes you proud to be an AUSSIE

That is in the plan. But at least for the time being I know im in the clear temp wise.

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