Big Mark Posted June 2, 2015 Share Posted June 2, 2015 Considering fitting electric fans when I change my radiator but can't see a fitting guide anywhere on here. Do people have then both on all the time, or only at certain temps, or one on and other temp controlled? Probably going this kit as has everything in it including the best fans I can find so just curious as to wiring, especially as their twin speed. http://www.burtonpower.com/kenlowe-twin-electric-fan-kit-14-dia-heavy-duty-kentwin14hd.html Quote Link to comment Share on other sites More sharing options...
mattdavies Posted June 2, 2015 Share Posted June 2, 2015 I have wired both off my stock fan wiring utilising a Relay. I heard Lee (SRD) talking about staggering them by having one temperature controlled and another on stock wiring. Its upto you really if you are running an aftermarket ECU then you can run them through that Quote Link to comment Share on other sites More sharing options...
David P Posted June 2, 2015 Share Posted June 2, 2015 Save yourself some dosh. This fits using stock shroud bolts. http://www.ebay.co.uk/itm/TOYOTA-SUPRA-1993-96-MK4-TWIN-TURBO-RACE-ALLOY-RADIATOR-FAN-SHROUD-KITS-/181722687997?pt=LH_DefaultDomain_3&hash=item2a4f8429fd 1 x relay and a 38mm top hose fitting stat and you're up and running. Quote Link to comment Share on other sites More sharing options...
Big Mark Posted June 2, 2015 Author Share Posted June 2, 2015 (edited) I keep here negative reports about shrouds like that as they effectively are blocking air from going through most of the radiator except where the fans are. Sort of puts me off tad. Edited June 2, 2015 by Big Mark (see edit history) Quote Link to comment Share on other sites More sharing options...
T2 MSW Posted June 2, 2015 Share Posted June 2, 2015 Yep shrouds are useless, they just block air getting through the radiator and IMO should be avoided. Quote Link to comment Share on other sites More sharing options...
Big Mark Posted June 2, 2015 Author Share Posted June 2, 2015 Yep shrouds are useless, they just block air getting through the radiator and IMO should be avoided. Yeah that's what I keep hearing. So the kit from Burton I'm considering, any idea how I wire it up? Isn't there a temperature sensor on the radiator already, could I not just spliice off of that? Quote Link to comment Share on other sites More sharing options...
Al Massey Posted June 2, 2015 Share Posted June 2, 2015 But if you don't have a shroud then the fan won't do much will it Quote Link to comment Share on other sites More sharing options...
gavin.starr Posted June 2, 2015 Share Posted June 2, 2015 But if you don't have a shroud then the fan won't do much will it Exactly, The supra comes with a shroud fitted from factory so it must be there for a reason. Quote Link to comment Share on other sites More sharing options...
Big Mark Posted June 3, 2015 Author Share Posted June 3, 2015 Electric fans have a shroud around their blades so when the fans are spinning this forces the air to be sucked through the radiator. Yet the lack of a back plate means air car travel through the radiator freely when the car is moving, fans on a backing plate appear to restrict this air flow to me. Quote Link to comment Share on other sites More sharing options...
Lee P Posted June 3, 2015 Share Posted June 3, 2015 Yep no shroud just 2 electric fans with enough power to move the air Make sure they are wired separately so if you ever have one fail it doesn't take both out. Separately relays and fuses We do a kit which uses Kenlowe fans, have never had a failure and they are the only fans we found that move enough air. Quote Link to comment Share on other sites More sharing options...
T2 MSW Posted June 3, 2015 Share Posted June 3, 2015 But if you don't have a shroud then the fan won't do much will it The stock plastic shroud is designed to channel air through the large fan hole but also allow the fan to pull enough air through the rad when stationary. Electric fans have a shroud around their blades so when the fans are spinning this forces the air to be sucked through the radiator. Yet the lack of a back plate means air car travel through the radiator freely when the car is moving, fans on a backing plate appear to restrict this air flow to me. I can tell you having done a track day with one of them metal shrouds on my car quickly got up past 100 degrees before I had to pull in. Took the whole fan kit off and whilst out on the track the car stayed at 90 degrees. Quote Link to comment Share on other sites More sharing options...
Big Mark Posted June 3, 2015 Author Share Posted June 3, 2015 Twin fans, such as the SRD kit or Burton kit are sounding more and more like the best option. Quote Link to comment Share on other sites More sharing options...
baldy Posted June 3, 2015 Share Posted June 3, 2015 the powerhouse racing kit, using lexus fans is a nice but not cheap http://www.powerhouseracing.com/p-4436-phr-fan-shroud-kit-using-is300-fans-for-1993-98-supra.aspx the fan units are available from breakers Quote Link to comment Share on other sites More sharing options...
Shane Posted June 3, 2015 Share Posted June 3, 2015 (edited) I use one of the ebay fan shrouds, but have modded it. Firstly, there imo is too much of a gap around the edges of the shroud and this needs to be sealed up, as does the gap between the fans (although small) themselves and the shroud. otherwise the fans simply suck most of the air through these gaps and not through the rad. Secondly, I made one of the fan holes larger and fitted a 16" fan in. I figure that now there is very little of the actual shroud left and most of the area is covered by the fans, allowing air to be pushed through. I also use a kenlowe controller for the larger fan, and the oem fan switch at the bottom of the rad for the smaller fan. The controller is set to come on a couple of degrees lower than the thermostat in the rad. Even on the hottest day after a good thrashing the does second fan kick in, the only time it did was when I had pulled the wire off the Kenlowe controller whilst doing something else and hadn't realised it, thus confirming what Lee P has said about seperate supplies being a good idea. I reckon jaguar had the right idea with this design: http://www.ebay.co.uk/itm/JAGUAR-X-TYPE-2001-05-PETROL-2-1-V6-RADIATOR-FAN-COWLING-GENUINE-OEM-/131498554732?pt=LH_DefaultDomain_3&hash=item1e9decb56c On this shroud there are 3 flaps that remain closed when the car is stationary and the fans running but allow airflow through the shroud when moving. Edited June 3, 2015 by Shane (see edit history) Quote Link to comment Share on other sites More sharing options...
Big Mark Posted June 3, 2015 Author Share Posted June 3, 2015 I work for jaguar Land Rover so was having a look at just such an item last week. I suppose if I got the dimensions of all the JLR units and the supra radiator I could see if any were a close fit, but not the easiest info to find, plus I've got several jobs I need to get done before the Wroxall Abbey meet so need to crack on with this as soon as back in the UK. Quote Link to comment Share on other sites More sharing options...
Big Mark Posted June 3, 2015 Author Share Posted June 3, 2015 the powerhouse racing kit, using lexus fans is a nice but not cheap http://www.powerhouseracing.com/p-4436-phr-fan-shroud-kit-using-is300-fans-for-1993-98-supra.aspx the fan units are available from breakers With new fans that unit would be silly price! Quote Link to comment Share on other sites More sharing options...
T2 MSW Posted June 3, 2015 Share Posted June 3, 2015 Stock setup is the best IMO fella. Thats what I would run from now on with a good condition fan and a brand new clutch from Toyota. Quote Link to comment Share on other sites More sharing options...
baldy Posted June 3, 2015 Share Posted June 3, 2015 With new fans that unit would be silly price! true, but its a nice setup Quote Link to comment Share on other sites More sharing options...
Big Mark Posted June 3, 2015 Author Share Posted June 3, 2015 (edited) Stock setup is the best IMO fella. Thats what I would run from now on with a good condition fan and a brand new clutch from Toyota. Possibly, but for many owning a Supra is all about putting your own stamp on it. The fact that there are so few totally stock cars illustrates this. So for me I'm liking the idea and look of twin electric fans. Edited June 3, 2015 by Big Mark (see edit history) Quote Link to comment Share on other sites More sharing options...
Big Mark Posted June 3, 2015 Author Share Posted June 3, 2015 But, fan choice aside, my post was about how to wire twin electric fans up. Can't seem to find a diagram or a supra specific kit except this one http://powerhouseracing.com/p-4603-phr-pnp-harness-for-is300-fan-kit.aspx It's for the IS300 fans but guess other than he connector to the fans it'll be about as neat and simples solution as possible. Quote Link to comment Share on other sites More sharing options...
Shane Posted June 3, 2015 Share Posted June 3, 2015 (edited) I work for jaguar Land Rover so was having a look at just such an item last week. I suppose if I got the dimensions of all the JLR units and the supra radiator I could see if any were a close fit, but not the easiest info to find, plus I've got several jobs I need to get done before the Wroxall Abbey meet so need to crack on with this as soon as back in the UK. Ok, so I now use one of these on the larger fan: http://www.rimmerbros.co.uk/Item--i-KLM2150?utm_source=google&utm_medium=cpc&utm_campaign=PLA&gclid=CJ2Gx83p88UCFScHwwodOkoAWg Then the OEM switch that sits in the bottom of the radiator to control the secondary smaller fan. Its worth mentioning that this is a normally closed thermal switch that pulls a relay in if you rely on the stock wiring. I guess they chose normally closed to offer a bit more protection in terms of a fail safe. I did play with one of these, but didn't like it as I could never get a really good seal around the thermocouple tube, it sits inside the top hose and there is a silly little seal with a groove in. http://www.ebay.co.uk/itm/Thermal-Switch-Thermostat-Dial-Controller-Electric-Fan-/231009390414?pt=LH_DefaultDomain_3&hash=item35c93b8f4e Edited June 3, 2015 by Shane (see edit history) Quote Link to comment Share on other sites More sharing options...
Shane Posted June 3, 2015 Share Posted June 3, 2015 http://www.ebay.co.uk/itm/Thermal-Fan-Switch-Thermostat-Electric-Cooling-Fan-38mm-Defender-Discovery-V8-/390589750908?pt=LH_DefaultDomain_3&hash=item5af0f69e7c You could run two fans at different temperatures with this sort of thing though, would be a tidier solution: http://www.ebay.co.uk/itm/Thermal-Fan-Switch-Thermostat-Electric-Cooling-Fan-38mm-Defender-Discovery-V8-/390589750908?pt=LH_DefaultDomain_3&hash=item5af0f69e7c Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 4, 2015 Share Posted June 4, 2015 Possibly, but for many owning a Supra is all about putting your own stamp on it. The fact that there are so few totally stock cars illustrates this. So for me I'm liking the idea and look of twin electric fans. Sadly this often translates into: "For many owning a s Supra is all about &*@#~ing it up with ill conceived modifications that look shiny, silly or make a lot of noise" Quote Link to comment Share on other sites More sharing options...
T2 MSW Posted June 4, 2015 Share Posted June 4, 2015 Sadly this often translates into: "For many owning a s Supra is all about &*@#~ing it up with ill conceived modifications that look shiny, silly or make a lot of noise" Quote Link to comment Share on other sites More sharing options...
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