minivin Posted August 16, 2006 Share Posted August 16, 2006 Ok, just got a radiator fan switch, Intermotor 50296 a bit like this one off of X Eng's website: There is three terminals, are they as follows?: + : Voltage in from fused supply 1 : First switching termperature 2 : Second switching termperature Any pointers would be great Quote Link to comment Share on other sites More sharing options...
Mark90 Posted August 16, 2006 Share Posted August 16, 2006 Yep, the parallel connectors are the two temperature switches and the one at 90° to them is the feed. Quote Link to comment Share on other sites More sharing options...
minivin Posted August 16, 2006 Author Share Posted August 16, 2006 shweet, so terminals should be as follows: Terminal 1 88-79C Terminal 2 110-102C Quote Link to comment Share on other sites More sharing options...
Tonk Posted August 16, 2006 Share Posted August 16, 2006 connect it to the lower switching range rob Quote Link to comment Share on other sites More sharing options...
tuko Posted August 16, 2006 Share Posted August 16, 2006 Rob, Where did you get the switch? Is it a standard 22mm thread? The switch I have for my fan is 92C, which is too hot for my motor. I'm looking for a cooler unit, like your, if the first contact is indeed 79-88C. Todd. Quote Link to comment Share on other sites More sharing options...
Bull Bar Cowboy Posted August 16, 2006 Share Posted August 16, 2006 Here you go Todd ........... the complete 22mm intermotor range............. hope this comes out OK as the forum sftware deletes TABS. Intermotor are widely used as OEM and available from any aftermarket parts place Its part number ..... spanner size........ thread .......... temp range 50100 29 M22 x 1.5 82-68 50101 29 M22 x 1.5 84-79/88-83 50250 29 M22 x 1.5 86-76 50012 29 M22 x 1.5 86-77 50090 29 M22 x 1.5 86-81 50120 29 M22 x 1.5 88-79 50295 29 M22 x 1.5 88-79 50296 29 M22 x 1.5 88-79/110-102 50271 29 M22 x 1.5 88-83 50272 29 M22 x 1.5 88-83 50275 29 M22 x 1.5 88-83 50217 29 M22 x 1.5 88-83/92-87 50091 29 M22 x 1.5 88-83/92-87 50212 29 M22 x 1.5 88-83/92-87 50213 29 M22 x 1.5 88-83/92-87 50216 29 M22 x 1.5 88-83/92-87 50221 29 M22 x 1.5 88-83/92-87 50219 29 M22 x 1.5 88-83/92-97 50240 29 M22 x 1.5 90-80 50110 29 M22 x 1.5 92-82 50111 29 M22 x 1.5 92-82 50112 29 M22 x 1.5 92-82 50113 29 M22 x 1.5 92-82/95-80 50218 29 M22 x 1.5 92-82/97-92 50170 29 M22 x 1.5 92-87 50200 29 M22 x 1.5 92-87 50210 29 M22 x 1.5 92-87 50211 29 M22 x 1.5 92-87 50220 29 M22 x 1.5 92-87 50230 29 M22 x 1.5 92-87 50231 29 M22 x 1.5 92-87 50235 29 M22 x 1.5 92-87 50260 29 M22 x 1.5 92-87 50270 29 M22 x 1.5 92-87 50280 29 M22 x 1.5 92-87 50281 29 M22 x 1.5 92-87 50285 29 M22 x 1.5 92-87 50290 29 M22 x 1.5 92-87 50215 29 M22 x 1.5 92-87/97-92 50011 29 M22 x 1.5 93-88 50102 29 M22 x 1.5 93-88/97-92 50035 29 M22 x 1.5 95-85/102-92 50130 29 M22 x 1.5 95-86 50030 29 M22 x 1.5 95-90 50033 29 M22 x 1.5 95-90 50061 29 M22 x 1.5 95-90 50062 29 M22 x 1.5 95-90 50160 29 M22 x 1.5 95-90 50092 29 M22 x 1.5 95-90/100-95 50174 29 M22 x 1.5 95-90/100-95 50104 29 M22 x 1.5 97-92 50282 29 M22 x 1.5 97-92 50103 29 M22 x 1.5 97-92/101 -96 50214 29 M22 x 1.5 97-92/102-97 50190 29 M22 x 1.5 100-95 50195 29 M22 x 1.5 100-95 50196 29 M22 x 1.5 100-95 50197 29 M22 x 1.5 100-95 50198 29 M22 x 1.5 100-95/110-105 50000 29 M22 x 1.5 103-98 50013 29 M22 x 1.5 103-98 50014 29 M22 x 1.5 103-98 50191 29 M22 x 1.5 120-115 Ian Quote Link to comment Share on other sites More sharing options...
Mark90 Posted August 16, 2006 Share Posted August 16, 2006 Ian, what temp ranges would you say was suitable for a V8 with the temp sensor mounted about mid way along the top hose, running two fans (one low temp and one high temp)? Quote Link to comment Share on other sites More sharing options...
minivin Posted August 16, 2006 Author Share Posted August 16, 2006 connect it to the lower switching range rob yup, was going to Quote Link to comment Share on other sites More sharing options...
minivin Posted August 16, 2006 Author Share Posted August 16, 2006 Rob,Where did you get the switch? Is it a standard 22mm thread? The switch I have for my fan is 92C, which is too hot for my motor. I'm looking for a cooler unit, like your, if the first contact is indeed 79-88C. Todd. Got mine off Ebay after some thorough searching, details as per BBC above Quote Link to comment Share on other sites More sharing options...
Bull Bar Cowboy Posted August 16, 2006 Share Posted August 16, 2006 Ian, what temp ranges would you say was suitable for a V8 with the temp sensor mounted about mid way along the top hose, running two fans (one low temp and one high temp)? Hello Mark, My tests showed that on the 3.5 (200 ponies ish) I needed a 50091 ………. but as you know my fans are wired in series for the low temp (half speed), and the high temp switches them into parallel operation (full speed) Using the above the low speed cuts in at 94 and cuts out just below 90. High speed cuts in at 100 and out at 95. Very, very rarely , if ever, do they go to full speed. My splice is mounted closer to the rad than the engine in the top hose ….. I suppose about ¾ as opposed to ½……… find a pic …….. ah, here you go…… just in shot, but you get the idea ……… I’ve got others if you need them, from when the engine was all shiny & rebuilt Another tip in to mount the switch in the top hose upside down ….... as there is usually water in the bottom of the hose, but sometimes not in the very top portion under certain circumstances…….. this is especially true when moving very slowly off road. The top hose on the V8 sits very high on the engine. This came to my notice in the early days when I was getting some strange switching with the fans …………. This led me a merry dance until one day I was running the engine and had forgot to fit the switch and the header tank cap …….. no coolant came out of the switch hole until I revved the engine ………. with it on idle and just above , viewing through the 22mm switch hole, the coolant level was generally just below the top of the hose. …………bring the revs up and of course it came raining out of the hole …………….. I dunno what the effect is when its pressurized. Sorry for the thread Hi-jack Rob. Ian Quote Link to comment Share on other sites More sharing options...
minivin Posted August 16, 2006 Author Share Posted August 16, 2006 Sorry for the thread Hi-jack Rob. Ian no no, please carry on! all good information Quote Link to comment Share on other sites More sharing options...
Mark90 Posted August 16, 2006 Share Posted August 16, 2006 Actually mine is mounted in a very similar place to yours. And as you can see is horizontal, not had any issues with odd switching (even at extreme angles) so I think the position seems to be fine. I'm using a 50091 (88-83/92-87) as supplied by Si with the switch housing. The temperatures that I'm seeing the switching at on the temp guage are I would say about 4°C higher due to the temp guage (Racetech capilary) being in the (carb) manifold in the standard temp sender position. Off road the low temp fan tends to be on a lot of the time,especially if the engine is being worked and holds the temp around 88-90°C. The second fan has yet to come on, unless I switch the first one off (while I try and hear if the fuel pump is pumping but that's another matter) and forget to switch it back on The low temp fan sometimes comes on during road driving at reasonable speed not stuck in traffic, although if i turn it off the temp sticks around the 90-92°C mark. I was wondering if maybe my fans are switching in a bit early, better early than late I know. Oh and currently there is no thermostat fitted, yeh i know but the thermostat housing will not seal with a thermostat in. Quote Link to comment Share on other sites More sharing options...
Bull Bar Cowboy Posted August 16, 2006 Share Posted August 16, 2006 Those figures are spot on Mark ………. Yes the fan should be on a lot when you are really slow moving or working the motor hard and slow moving. My capillary feed is from the usual temp sender position on the EFI manifold. The sooner you get a thermostat in there the better ………….. if the cover seals ok without the stat ………. Why does it leak with the stat ? …….. maybe the slight recess just below the cover mounting surface that the stat sits in needs a good clean up ? With the stat in you will see a slightly higher engine temp and I think then the switching will look much the same as mine. Ian Quote Link to comment Share on other sites More sharing options...
simonr Posted August 16, 2006 Share Posted August 16, 2006 For wiring have a look at: http://www.x-eng.co.uk/Instructions/X-Fan.pdf Si Quote Link to comment Share on other sites More sharing options...
Mark90 Posted August 16, 2006 Share Posted August 16, 2006 Nice to hear my figures seem about right Re the thermostat, the recess is clean but doesn't seem deep enough for some reason. Also one of the bolt holes has been drilled out and re-tapped in the past and that doesn't help things. It didn't seal easily without the thermostat, but was much worse with. Looking at a new manifold really, and might stick some SU's on to replace the stombergs as an interim step before getting round to MS. Anyway back to fan wiring.... Quote Link to comment Share on other sites More sharing options...
tuko Posted August 16, 2006 Share Posted August 16, 2006 Here you go Todd ........... the complete 22mm intermotor range............. hope this comes out OK as the forum sftware deletes TABS. Intermotor are widely used as OEM and available from any aftermarket parts place Ian Thanks Ian, much appreciate the info. The only problem I have, is where I'm living.....Sweden! I've tried at all the local aftermarket places in town and nobody can help me for a switch. I'll try eblag, before pestering anybody here Todd. Quote Link to comment Share on other sites More sharing options...
JSG Posted August 19, 2006 Share Posted August 19, 2006 I bought one from Si at Billing but haven't fitted it yet - might be a job for this weekend Most people seem to fit them in the top hose but I thought the bottom hose was recomended? I guess there may be a temp difference due to water being hotter going into the rad than it is coming out (hopefully lol ). Which is best? Why do most use the top hose - is it for convenience? Quote Link to comment Share on other sites More sharing options...
edwardatherton Posted August 19, 2006 Share Posted August 19, 2006 I bought one from Si at Billing but haven't fitted it yet - might be a job for this weekend Most people seem to fit them in the top hose but I thought the bottom hose was recomended? I guess there may be a temp difference due to water being hotter going into the rad than it is coming out (hopefully lol ). Which is best? Why do most use the top hose - is it for convenience? I put mine (S1 2.0-litre) in the bottom hose so it was a bit more out of sight. Here it will not have any air in the hose (hopefully!) and will measure the temp of water going into the engine. If the rad is not cooling the water enough the fans will cool it more. In the top hose however, it measures water coming out of the engine. If the engine is being worked hard then temp will rise quicker here and kick the fans in slightle earlier to cool the water even more going into the engine. Does that make sense? And does it really matter where it goes. Certainly I doubt the 2.0-litre would be affected by a few degrees difference in temp! Quote Link to comment Share on other sites More sharing options...
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