Burnt out electric cooling fan
Discussion
Davies Craig are well thought of and are used a lot in motorsport, check out Merlin Motorsport:
https://www.merlinmotorsport.co.uk/s/cooling/elect...
One word of caution, before you purchase check out what amps are drawn, fans can vary quite a lot and it would be easier to fit something that is compatible with your existing wiring or perhaps even replace your wiring at the same time in any event.
https://www.merlinmotorsport.co.uk/s/cooling/elect...
One word of caution, before you purchase check out what amps are drawn, fans can vary quite a lot and it would be easier to fit something that is compatible with your existing wiring or perhaps even replace your wiring at the same time in any event.
I've heard good things about these, but if your car is positive earth not for you sadly
https://www.ebay.co.uk/itm/Jaguar-MK2-Cooling-Fan-...
https://www.ebay.co.uk/itm/Jaguar-MK2-Cooling-Fan-...
When you do manage to source one, make sure it is shifting the air in the correct direction through the radiator.
I restored an Elan +2 some years back, and the previous owner had replaced the rad fan with an aftermarket lookalike. For weeks I could not understand why it started to overheat at a steady 30-40mph, but cooled down in traffic. It was only when I walked around the front of the car with engine running one day that I noticed that warm air was being blown forward out of the grill!
I restored an Elan +2 some years back, and the previous owner had replaced the rad fan with an aftermarket lookalike. For weeks I could not understand why it started to overheat at a steady 30-40mph, but cooled down in traffic. It was only when I walked around the front of the car with engine running one day that I noticed that warm air was being blown forward out of the grill!
It's widely held (i.e. I don't have any factual evidence) that the Mk2 suffers a 'reverse flow regime' at some speed like 70m/h. The aerodynamics of the car are trying to make air flow from under the bonnet out through the radiator. Some people say that it makes the engine driven fan essential as an electric one would have to work very hard and possibly burn out. I think there's a better solution. I discussed it with Ron Beattie many years ago and we both felt the best thing to do is eliminate the reverse flow by adding some sheet metal to the front cross member.
I don't know if it's an excuse for driving at 90 on the motorway. "Well you see officer, at lower speeds there's a reverse flow and my engine gets too hot ... ."
I don't know if it's an excuse for driving at 90 on the motorway. "Well you see officer, at lower speeds there's a reverse flow and my engine gets too hot ... ."
lowdrag said:
but if your car is positive earth not for you sadly
On a more general note about positive earth.When I bought my XK150 the guys at RGC suggested I had an electric fan added to supplement the normal mechanical one. They added a thermostatic controller which entailed having a short piece of Ali pipe in the top hose. All worked well for a couple of years till the pipe completely dissolved. My late father who had been a material scientist spotted the issue immediately. the thermostat circuit was expecting to be negative earth, the rest of the car was positive earth and so we ended up with electrolytic corrosion with the ali pipe acting as the anode.
littleredrooster said:
When you do manage to source one, make sure it is shifting the air in the correct direction through the radiator.
I restored an Elan +2 some years back, and the previous owner had replaced the rad fan with an aftermarket lookalike. For weeks I could not understand why it started to overheat at a steady 30-40mph, but cooled down in traffic. It was only when I walked around the front of the car with engine running one day that I noticed that warm air was being blown forward out of the grill!
Yeah, been there, done that. Previous owner converted to negative earth, but forgot to retire the fan. Took me a few weeks to work out why it was running so hot!I restored an Elan +2 some years back, and the previous owner had replaced the rad fan with an aftermarket lookalike. For weeks I could not understand why it started to overheat at a steady 30-40mph, but cooled down in traffic. It was only when I walked around the front of the car with engine running one day that I noticed that warm air was being blown forward out of the grill!
Got a new -ve earth fan, so shouldn’t be problem.
Thank everyone for advice.
lowdrag said:
I've heard good things about these, but if your car is positive earth not for you sadly
https://www.ebay.co.uk/itm/Jaguar-MK2-Cooling-Fan-...
Took your advice and bought one. Works fine, but a total PITA to wire up. Ended up looking like a bird’s nest and when it kicks in the ammeter reads about a 20 amp charge?!https://www.ebay.co.uk/itm/Jaguar-MK2-Cooling-Fan-...
9xxNick said:
Sounds like your ammeter is connected up the wrong way around.
Nope. Reads discharge when I switch on things like lights. Reads charge when I rev up.Reads Charge or more charge when radiator fan is on and engine not running and running, respectively.
Also old electric fan showed discharge.
Must be the crap way I wired it, but the instructions were also crap.
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