terribleturner Posted April 5, 2006 Share Posted April 5, 2006 So i have 2 coolers going on the car for my auto gearbox and am now thinking about fans. 2 things, is it worth getting fans for both or the just one?? And the second is where and how do i hook up the fans so then come on when needed?? Quote Link to comment Share on other sites More sharing options...
psymon Posted April 6, 2006 Share Posted April 6, 2006 I have done this, well almost... Fitted a 96mm spal fan to oil cooler and with the help of "Paul Mac" have sorted out a small temp sensor, which is to be located on the oil feed to the cooler. At 85 degrees the fan turns on.... This was all wired up, but Paul and I had a problem with we got the wrong sensor, it was closed till 85 then open circuit. So Paul is ordering 2 more. The gent very kindly gave me the other sensor has they come in pairs. It was wired up from the battery with an inline fuse, to the sensor, and ground was used used for the switch. Just waiting for a new sensor. Paul Mac is the man to ask, if you have any further questions Simon Quote Link to comment Share on other sites More sharing options...
terribleturner Posted April 6, 2006 Author Share Posted April 6, 2006 Cool, thanks Quote Link to comment Share on other sites More sharing options...
SupraJames Posted April 6, 2006 Share Posted April 6, 2006 As and when I get one of these for mine, i am planning just to splice the power cable from the small electric fan next to the big one on the rad. Then it will just come on when that one does, not fussed about temp sensors etc... the cooler oil the better. Quote Link to comment Share on other sites More sharing options...
garethr Posted April 6, 2006 Share Posted April 6, 2006 I'm sure I've seen a thermostat switch that could be fitted in the oil line and used to control a cooling fan. Probably on a US site, though. EDIT: Found it.... http://www.derale.com/transcooleraccess.shtml -- In-Line Fan Thermostat Quote Link to comment Share on other sites More sharing options...
terribleturner Posted April 6, 2006 Author Share Posted April 6, 2006 Yeah i thought about hooking it up to the other fan there but wanted to see what else was available. Like that in-line thermostat, may see if i can get one in the UK. Quote Link to comment Share on other sites More sharing options...
Lucifer Posted April 6, 2006 Share Posted April 6, 2006 Yeah i thought about hooking it up to the other fan there but wanted to see what else was available. Like that in-line thermostat, may see if i can get one in the UK. Yes we have done two of these and the tranny does need to be thermal coupled and controlled. Quote Link to comment Share on other sites More sharing options...
TRD3000GT Posted April 6, 2006 Share Posted April 6, 2006 Activates Fan at 180 Degrees .. Ehhh? thats a bit warm aint it Quote Link to comment Share on other sites More sharing options...
Lucifer Posted April 6, 2006 Share Posted April 6, 2006 oF Quote Link to comment Share on other sites More sharing options...
terribleturner Posted April 6, 2006 Author Share Posted April 6, 2006 Activates Fan at 180 Degrees .. Ehhh? thats a bit warm aint it Yeah i thought that Found one on this page that comes on at 80, and Thinkauto do one that activates at 95. Think i may go for the 80 one. And shall i just get the one stat for the 2 fans?? They will be inline so can't see that being a problem. Quote Link to comment Share on other sites More sharing options...
SupraJames Posted April 6, 2006 Share Posted April 6, 2006 So i cant just wire it up to the other fan..? and have it running all the time..? thought if the fan ran all the time while the engine was running it would be ok..? Quote Link to comment Share on other sites More sharing options...
garethr Posted April 6, 2006 Share Posted April 6, 2006 80 degrees C = 176 degrees F Does the Thinkauto one switch a fan or bypass the cooler until the oil is up to temperature? Quote Link to comment Share on other sites More sharing options...
TRD3000GT Posted April 6, 2006 Share Posted April 6, 2006 I have a feeling that the text on that website is wrong and they mean F not Deg.. Id go for the 80 Degrees stat Also a Pull type Spal fan... Quote Link to comment Share on other sites More sharing options...
garethr Posted April 6, 2006 Share Posted April 6, 2006 Trivia... John Maher (http://www.johnmaherracing.co.uk) was the Buzzcocks' drummer Johnny Marr's real name is John Maher Quote Link to comment Share on other sites More sharing options...
terribleturner Posted April 6, 2006 Author Share Posted April 6, 2006 Does the Thinkauto one switch a fan or bypass the cooler until the oil is up to temperature? Oh didn't think aabout that, i'll ask when im down there next. Quote Link to comment Share on other sites More sharing options...
garethr Posted April 6, 2006 Share Posted April 6, 2006 So i cant just wire it up to the other fan..? and have it running all the time..? thought if the fan ran all the time while the engine was running it would be ok..? I guess you don't want the fluid too cool. The standard trans cooler is in the rad, so I suppose it can also be a "warmer". Don't know if you need to go as far as having a thermostatically-controlled bypass for the trans cooler, though. Quote Link to comment Share on other sites More sharing options...
b_have Posted April 6, 2006 Share Posted April 6, 2006 No thermo on mine, but I considered this when fitting, decided to run it in series with the stock system. Done a few track days with my 3800 TC with no heat problems. (fluid still like new) Quote Link to comment Share on other sites More sharing options...
SupraJames Posted April 6, 2006 Share Posted April 6, 2006 Gareth, yeah the standard cooler is in the rad but the UK specs have an additional cooler in the wheel arch, this is what i would be looking to replace, so this would be in direct air flow anyway, so dont think have a fan on all the time the engine is running is gonna make much difference. So will go the same way as b'have and run it in series with the stock fan. Quote Link to comment Share on other sites More sharing options...
paul mac Posted April 6, 2006 Share Posted April 6, 2006 after trawling for hours and much deliberation i have gone for a stat that switchs at 70 degress (its on its way Simon) i remember an old thread by Dude (bless him) where he was adament the lower the temp the better (within reason) after having a temp gauge on the trans fluid for a while now i have come to this conclusion as well, i think a stat that comes in at the 85-95 range is to high, if you have a gauge on the fluid you will see the gearbox builds heat very quickly when your giving it some so by the time a fan kicked in at 85-95 © its to late and the temp will overshoot considerably probably as high as 110-130+ (way to hot) therefore i've gone for the lower temp of 70 degrees, i cant stress how rapid the gearbox heats up, when i switch the fan on (manual controll at the moment) it will take 10 minutes plus to bring it back down, on my T61 i am fitting another cooler as the MVP one isn't up to it on its own in the summer, optimum auto trans temp 50-70 ©, the first thing to do is defo get a gauge so you know whats going on Quote Link to comment Share on other sites More sharing options...
terribleturner Posted April 6, 2006 Author Share Posted April 6, 2006 Nice one Paul, have you got a link for that stat?? Also where abouts have you installed the temp sensor for the trans?? And finally, if im installing 2 auto coolers should i get fans for both?? Quote Link to comment Share on other sites More sharing options...
paul mac Posted April 6, 2006 Share Posted April 6, 2006 (edited) Nice one Paul, have you got a link for that stat?? Also where abouts have you installed the temp sensor for the trans?? And finally, if im installing 2 auto coolers should i get fans for both?? The stat is from RS components part number 331-540 (60C gives about a 80C switch point), these are surface mount stats speak to psymon he may post up a pick of the stat mounted, the logical best place to mount would be on the incoming (hot) side of the cooler, 2 fans now theres a though you could wire em seperate and have one coming on at 70 and the next at 75, if moneys no object 2 fans would be great but you could just install one for now and see how it goes Edited December 29, 2008 by paul mac tidy up (see edit history) Quote Link to comment Share on other sites More sharing options...
terribleturner Posted April 6, 2006 Author Share Posted April 6, 2006 The girlfriend buys through RS for work, but i think i can stretch to those prices So this is the type right?? Literaly is attached to the side of the cooler?? Tempted to get a 60 and 70. Quote Link to comment Share on other sites More sharing options...
paul mac Posted April 6, 2006 Share Posted April 6, 2006 The girlfriend buys through RS for work, but i think i can stretch to those prices So this is the type right?? Literaly is attached to the side of the cooler?? Tempted to get a 60 and 70. yep thats the one, 60 and 70 sounds good for twin fans Quote Link to comment Share on other sites More sharing options...
terribleturner Posted April 10, 2006 Author Share Posted April 10, 2006 Was down at Think Auto today and i was chatting with the bloke there about the fans they advertise and he told me they are just waterproof fanss that are used on PC's. Been looking on here but really have no idea what i should be searching for Anyone know?? Quote Link to comment Share on other sites More sharing options...
terribleturner Posted April 20, 2006 Author Share Posted April 20, 2006 Got some fans and the new thermostats that i will try and put on tomorrow. They fit perfect between the fmic and the auto coolers. Have even decided to get a fan for the oil cooler too now Quote Link to comment Share on other sites More sharing options...
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