S4 thermostatic rad fan switch
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I'm trying to keep my late S4 SE as original as possible. I have been advised that the original factory screw in to the top of the rad thermostatic fan switches have long since disappeared... Unless anyone out there knows otherwise! Most grateful .
Thanks, Pete
Thanks, Pete
- lottex
- Second Gear
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There were 2 types - dealer fit into top hose for Kenlowe type fans, or an otter switch into radiator header on the opposite side of the inlet hose, for the cradle supported smiths-motor driven fan.
For an S4 I guess it'll probably be the latter. Otter switches are still available new but they don't look quite the same as they now have spade electrical fixings rather than the original pin. Also note they are a push in fit, rather than a screwin
Hope this helps
Richard
For an S4 I guess it'll probably be the latter. Otter switches are still available new but they don't look quite the same as they now have spade electrical fixings rather than the original pin. Also note they are a push in fit, rather than a screwin
Hope this helps
Richard
Richard
'72 Sprint
'72 Sprint
- richardcox_lotus
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Thanks Richard, my car definitely has the latter switch-ie one that screws into the radiator header on the opposite side of the inlet hose. I do have the original switch but it's not working. I assume its a sealed unit that can't be repaired-unless anyone can suggest otherwise..?
As a plan B, to fit the later push in type, one images that the rad needs to be modified?
Thanks again, Pete
As a plan B, to fit the later push in type, one images that the rad needs to be modified?
Thanks again, Pete
- lottex
- Second Gear
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- Joined: 27 Oct 2004
lottex wrote:Thanks Richard, my car definitely has the latter switch-ie one that screws into the radiator header on the opposite side of the inlet hose. I do have the original switch but it's not working. I assume its a sealed unit that can't be repaired-unless anyone can suggest otherwise..?
As a plan B, to fit the later push in type, one images that the rad needs to be modified?
Thanks again, Pete
How do you know it's not working? There is an adjustment screw behind a small plastic cap. Put it in a pot of boiling water to see at what temperature it opens and closes. Adjust the screw to change setting. It's a thermal mechanical device.
Glen
05 Elise - Back where I started
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05 Elise - Back where I started
65 Elan S2 - 26/4055
72 Europa - 74/2358R
69 Elan S4 - 45/7941
64 Elan S1 - 26/0379
12 Colin 30 - Lotus Racing Kart
07 Exige S - Wicked Road/Track Car
07 Exige S - Fast Road/Track Car
06 Elise - Track pack
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Certified Lotus - Coveted Fifth Gear
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If one has a push-in type otter switch, I found a Volvo gasket a few years back that makes for a tight fit...http://www.lotuselan.net/forums/elan-archive-f16/how-tamed-the-otter-t12224.html
Gary
'71 Sprint FHC
Miami, Florida
Gary
'71 Sprint FHC
Miami, Florida
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archigator - Fourth Gear
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Thanks Glen,
I succesfully removed the tiny plastic cover, turned the tiny adjustment screw in and out a few turns whilst the switch was in hot water. It freed up and now works perfectly. Thanks again for the advice. I would have never found it otherwise! (And thanks to lotuselan.net !)
I succesfully removed the tiny plastic cover, turned the tiny adjustment screw in and out a few turns whilst the switch was in hot water. It freed up and now works perfectly. Thanks again for the advice. I would have never found it otherwise! (And thanks to lotuselan.net !)
- lottex
- Second Gear
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- Joined: 27 Oct 2004
Glad to help Pete. The members of this community have helped me many times. It's a fantastic resource!
Glen
05 Elise - Back where I started
65 Elan S2 - 26/4055
72 Europa - 74/2358R
69 Elan S4 - 45/7941
64 Elan S1 - 26/0379
12 Colin 30 - Lotus Racing Kart
07 Exige S - Wicked Road/Track Car
07 Exige S - Fast Road/Track Car
06 Elise - Track pack
05 Elise - Back where I started
65 Elan S2 - 26/4055
72 Europa - 74/2358R
69 Elan S4 - 45/7941
64 Elan S1 - 26/0379
12 Colin 30 - Lotus Racing Kart
07 Exige S - Wicked Road/Track Car
07 Exige S - Fast Road/Track Car
06 Elise - Track pack
-
Certified Lotus - Coveted Fifth Gear
- Posts: 1233
- Joined: 04 Aug 2014
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