electric fan/switch on reliant 850 engine

[trikerpete]

Hi everyone
   Just wondered if anyone has info regarding a thermal switch to turn fan on/off.

1st, do you know what thread size/pitch the original reliant temperature sender is?

2nd, do you know of an alternative switch unit that will fit in its place to turn fan on + off?

Cheers
 

[fifer]

1st
Thread ; 5/8 by 18 UNF
2nd ;
got a link somewhere 
.
.

[trikerpete]

Thanks for that Fifer, looking forward to the link.....how did I know that you would be first to respond 

[trikerpete]

I would also like to know the optimum temperatures that a switch would work from

[fifer]

 I have just added the following info to my website in the last few minutes  
 
https://sites.google.com/site/fifersrelianthintsandtips/fan-electric/fan-various-electric-options/fan-electric-computer-fan-r3w-post?pli=1
.
Note the advice given by " wheaters " to place  the thermostat in the bottom radiator hose  
.
Here is another fan switch link
http://www.ebay.co.uk/itm/25MM-HOSE-ADAPTOR-ELECTRIC-COOLING-FAN-SWITCH-VITARA-SJ-413-SJ413-SAMURAI-MLR-JO-/150819476965?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item231d8a95e5

.
.

[trikerpete]

Thanks for that Fifer.
Ive already got the electric fan fitted now looking for a thermal switch to operate it. I was hoping to find a 3/8" x 18 unf swicth unit to replace the original Reliant sender unit.

[one arm bandit]

added to my list is that also means i can keep the temp gauge off the original sender.

[trikerpete]

I dont want to bother with a temperature gauge, just want thermal switch to turn fan on/off

[fifer]

added to my list is that also means i can keep the temp gauge off the original sender.

If you need to replace the temp sender in the future then the following info might help 

https://sites.google.com/site/fifersrelianthintsandtips/water-temperature-sender

WATER TEMPERATURE TRANSMITTER

Thread ; 5/8 by 18 UNF  { This transmitter has a RED top }

RELIANT ; Part Number ; Still To Find               
LUCAS ; Part Number ; SNB105
DELCO ; Part Number ; 7966267
DELCO ; Part Number ; SU15
LAND ROVER ; Part Number ; PRC7918
PSA ; Part Number ; 1205552
SMITHS ; Part Number ; TT4802/00A
SMITHS ; Part Number ; A TT05

MANUFACTURER ….. MODEL ….................... YEAR From ….. YEAR To

ASTON MARTIN ............. DB5 , DB5 V8 ................  Sep 1967 ............. Nov 1976 ,

................................... Vantage .......................  Sep 1967 ............. Nov 1976
HILLMAN ..................... Avenger .......................  Feb 1970 ............. 1976         
................................... Hunter .........................  Oct 1966 ............. 1977         
................................... Imp .............................  1963 ..............................
................................... Minx .............................  Aug 1969 ............ Sep 1970   
HUMBER ...................... Sceptre , Arrow  ............  1963 ..............................
................................... Hawk , Super Snipe ........ 1964 ................... 1967       
JAGUAR ....................... Daimler Double Six 5.3 ... 1975 ................... 1980             
................................... Daimler Limousine ......... 1972 ................... 1975           
................................... Daimler Sovereign 2.8 .... 1970 ................... 1974                     
................................... Daimler Sovereign 4.2 .... 1971 ................... 1980               
................................... Daimler E type 4.2 ......... 1971 ................... 1974                     
................................... Daimler E type 5.3 V12 .. 1971 .................... 1974           
................................... XJ6 ... 2.8 ..................... 1970 .................... 1973
................................... XJ6 ... 4.2 ..................... 1971 .................... 1975           
................................... XJ12 ... 5.3 ................... 1970 .................... 1973         
SUNBEAM .................... Alpine ........................... 1965 ................... 1971         
................................... Rapier .......................... 1965 .................... 1971     
................................... Imp Sport ..................... Oct 1966 .............. 1971               
................................... Stilleto ......................... Oct 1967 .............. 1971                     
................................... Tiger ............................ 1964 .................... Feb 1967                   
TALBOT ....................... Hunter ......................... 1978 ....................................
RELIANT ...................... Fox .............................. 1983 .................... 1990                 
................................... Kitten .......................... 1975 ..................... 1983                     
................................... Rebel 700 , 750 ............. 1969 ..................... 1973                 
................................... Rialto ........................... 1982 ..................................             
................................... Robin 750 , 850 ............. 1973 ..................................         
TRIUMPH ..................... Spitfire 1300 , 1500 ........ 1967 .....................1971   
.
.

[spanners]

I dont want to bother with a temperature gauge, just want thermal switch to turn fan on/off

hey,, pete,,, if you find one to go in place of the original temp sender ,,get us one please ,, or let us have the part number as i,m wanting to do the same ,,

if not i,ll try and make a stat housing to take one like a ford fiesta,,,

[thebigdogsix]

Mine is in the rad but my rad is an r6 ats from an alto
 

[terry t]

Pete will some think like this do if you cant get the 5/8 one..

http://www.ebay.co.uk/itm/Thermal-Fan-Switch-Thermostat-Electric-Cooling-Fan-30mm-MG-B-Triumph-Austin-/230792164756?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item35bc48f594

[trikerpete]

Hi Terry
   Ive seen those but Im not willing to spend £30+.....maybe Im tight

[terry t]

Hi Terry
   Ive seen those but Im not willing to spend £30+.....maybe Im tight

No just carefull 
do you know any one thats got a helicoil kit have it drilled out for this

http://www.cbsonline.co.uk/product/Fan_Switch_87C%7C82C_M14_x_1.5_FANSW

[nabsim]

I saw quite a few where you stuffed a cable/probe into the water flow of the rubber pipe and just clamped it with the jubilee clip. I wasn't happy with that so splashed out (no pun intended) on an ali T piece bit from Mini Sport, just split rubber tube and slide on each side of the T (passes straight through) and the switch sits in from the top. Just wire straight from thermoswitch to Subaru fan