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GTR 102 Temp Sender Wanted
Posted: Tue Apr 16, 2024 1:37 am
by JAKK
Hi, I am on the look out for a GTR 102 temp sender unit for my 1963 Cooper. Its the sender with the green top, not red or black
Happy with new or 2nd hand (as long as it works) Im in New Zealand
Thanks
Re: GTR 102 Temp Sender Wanted
Posted: Tue Apr 16, 2024 3:14 pm
by Lakeland997
Hi Jakk
I have some NOS spares. They are the Intermotor version.
How desperate are you?
I have relatives in NZ who will be over here in July and could bring one back.
PM me if you still need one.
Andy
Re: GTR 102 Temp Sender Wanted
Posted: Wed Apr 17, 2024 3:27 am
by JAKK
Hi Andy
Not overly desperate - July is good. Not sure what you mean by Intermotor version though
Ken (JAKK)
Re: GTR 102 Temp Sender Wanted
Posted: Wed Apr 17, 2024 9:04 am
by mk1
Re: GTR 102 Temp Sender Wanted
Posted: Wed Apr 17, 2024 12:00 pm
by SPO41
The Intermotor part number 5270 does not exist on there website.
Re: GTR 102 Temp Sender Wanted
Posted: Wed Apr 17, 2024 12:08 pm
by mk1
SPO41 wrote: ↑Wed Apr 17, 2024 12:00 pm
The Intermotor part number 5270 does not exist on there website.
That's because they don't make them any more. The part being offered is NOS (New Old Stock).
Re: GTR 102 Temp Sender Wanted
Posted: Wed Apr 17, 2024 5:11 pm
by Lakeland997
Ok super-sleuths out there I have checked my Intermotor sensors and seem to have three versions although all are supposed to be for the early gauges.
They all have green insulators although the shade differs
The boxes have either 5270 or 52700 part number
Stamped numbers are one of either:
5270
B700
170
The 170 type are slightly longer
What do you guys think?
Re: GTR 102 Temp Sender Wanted
Posted: Thu Apr 18, 2024 10:19 am
by SPO41
mk1 wrote: ↑Wed Apr 17, 2024 12:08 pm
SPO41 wrote: ↑Wed Apr 17, 2024 12:00 pm
The Intermotor part number 5270 does not exist on there website.
That's because they don't make them any more. The part being offered is NOS (New Old Stock).
Well that explains that then.
It looks like they are no longer made by anyone
.
I have offered Ken a genuine NOS Smiths sender, but he seems to think he will find one elsewhere.
Re: GTR 102 Temp Sender Wanted
Posted: Thu May 02, 2024 10:11 am
by JAKK
Got NOS GTS102 sender from mini fan in Sweden. Thanks
Re: GTR 102 Temp Sender Wanted
Posted: Thu Jun 13, 2024 10:03 pm
by Spanners
Just found this thread, I'm after a GTR 102 for my '61 does anybody have one sitting around still? (I'm in the UK)
Re: GTR 102 Temp Sender Wanted
Posted: Sun Aug 11, 2024 8:58 pm
by Jonny8
I’m in the USA/California and also looking for at GTR102… I have a 62 cooper and the last owner fitted a red top which reads just about zero!!!
Re: GTR 102 Temp Sender Wanted
Posted: Tue Aug 13, 2024 10:31 pm
by SMOKE GREY
Jonny8 wrote: ↑Sun Aug 11, 2024 8:58 pm
I’m in the USA/California and also looking for at GTR102… I have a 62 cooper and the last owner fitted a red top which reads just about zero!!!
Sent you a PM
Re: GTR 102 Temp Sender Wanted
Posted: Thu Dec 12, 2024 2:19 am
by 62countrymanTX
Greetings. New member here. Thank you to all who posted on this forum, what an amazing resource esp for us newbies in America.
Just found this thread (Dec 2024) while trying to diagnose faulty temp reading. New Smiths C-N-H temp gauge with new GTR104 (red) sensor replaced older temp gauge and sensor. After idling 5 mins it will indicate car overheating although engine feels like it’s operating with normal temp.
Has this been solved? Is problem that ideally I would need a
GTR102 (not available) which is calibrated to gauge?
1962 Countryman w voltage regulator.
Re: GTR 102 Temp Sender Wanted
Posted: Thu Dec 12, 2024 8:43 am
by Rubber Sprung
Does anyone know what the ohm's reading for a green sensor is please? I've a few in a box I was thinking of testing .
Re: GTR 102 Temp Sender Wanted
Posted: Thu Dec 12, 2024 8:56 am
by timmy201
From here
viewtopic.php?p=165297#p165297
NickD wrote: ↑Thu Aug 17, 2017 10:39 pm
Colour information as follows:
GTR102 - Green Insert. Used up until 09/64 when the voltage stabilisers were introduced. Smiths marked TT-3800/00A, Intermotor 5270
GTR104 - Red Insert. Used from 09/64 until 1969 with voltage stabiliser. Smiths marked TT-3802/00, Intermotor 5271
GTR101 - Black Insert. Used from 1969 until 1994 with voltage stabiliser. Smiths marked TT-3803/00A
Resistance (temps estimate only - ie measured out of box and then after held in hand until warm):
GTR102 Green (actually 2 x NOS Intermotor 5270), 300Ω @12˚C, 200Ω @35˚C
GTR104 Red (actually NOS Intermotor 5271), 580Ω @12˚C, 450Ω @35˚C
GTR101 Black (actually used Smiths TT-3803/00A), 725Ω @12˚C, 520Ω @35˚C
