merl Posted April 4, 2013 Report Share Posted April 4, 2013 How many of you have installed an electric fan and deleted the mechanical? My options are:16" Puller fan in place of mechanical16" Pusher fan on front of rad since the condensor and aux fan are gone (I like this idea)dual puller or pusher fans I am most interested in wiring it up. I would like it to be auto 2 speed with the ability to manually turn it on high. Thoughts ? Thanks Quote Link to comment Share on other sites More sharing options...
0 B C Posted April 4, 2013 Report Share Posted April 4, 2013 I have never personally done it. I am a fan (well, okay, pun intended if it makes me look clever, pun not intended if its just too cheesy for you) of puller fans but I understand that a pusher would be a bit cleaner in the engine bay. I am personally not running any fan at all but am thinking about a slim puller if this summer gets too hot (last summer was fine).Im sure you have seen the Miller 2 speed fan control for the WAR chip.You should be able to re-use the resistor block for the AC condenser fan in order to wire up a 2-speed fan if you still have that laying around. If I do connect a fan, I plan on connecting it to the factory AC button to switch it on. picture related Quote Link to comment Share on other sites More sharing options...
0 merl Posted April 4, 2013 Author Report Share Posted April 4, 2013 I am confused on the Miller fan control ... Is that part of the WAR chip or something extra to purchase ? Quote Link to comment Share on other sites More sharing options...
0 straight6pwr Posted April 4, 2013 Report Share Posted April 4, 2013 in my swap car I had a pusher fan (also had AC deleted) that was wired to the ac switch so whenever it was really hot and the temp would start creepin i would just hit the AC button to turn it on. not good if you have other people drive your car often, as they wont remember. i only needed it when idling in traffic in the summer. Quote Link to comment Share on other sites More sharing options...
0 merl Posted April 4, 2013 Author Report Share Posted April 4, 2013 i only needed it when idling in traffic in the summer. This is why I think a pusher will be fine ... Thanks for that. Quote Link to comment Share on other sites More sharing options...
0 B C Posted April 4, 2013 Report Share Posted April 4, 2013 looks like this is just a purchase to unlock the code in the ECU for it, the actual Smart Fan page doesnt work https://www.millerperformancecars.com/catalogue.html?page=shop.product_details&flypage=flypage.tpl&category_id=50&product_id=98 Quote Link to comment Share on other sites More sharing options...
0 merl Posted April 4, 2013 Author Report Share Posted April 4, 2013 hmmmm ... not sure I need or want that. I do have the sensors in the radiator for low speed and high speed and the wiring for the aux fan is still there ... what about using that ? Or, I just run a new relay and let it run high speed or off. Quote Link to comment Share on other sites More sharing options...
0 merl Posted April 4, 2013 Author Report Share Posted April 4, 2013 Found this out on the Inter-webz ... this looks like the way to go but I need to have a 2 speed fan I think. Quote Link to comment Share on other sites More sharing options...
0 straight6pwr Posted April 4, 2013 Report Share Posted April 4, 2013 that seems overly complicated. do you really need a 2 speed? personally, i'd just tap into the stock temp sensor and use a single relay to just have 1 speed auto. unless of course the stock system is already wired like this. (not sure) Quote Link to comment Share on other sites More sharing options...
0 merl Posted April 4, 2013 Author Report Share Posted April 4, 2013 I did some more looking ... Flex-a-Lite 16" fan is only 11 Amps ... Stock circuit in the car is 25 Amps. I should be able to use the stock wiring for the fan I think. I do want to wire a over ride switch as well but that should be easy. Quote Link to comment Share on other sites More sharing options...
0 Jeff Posted April 5, 2013 Report Share Posted April 5, 2013 What I did was bought a thermo switch and put the sensor in the radiator where temp sensor was. I used a low profile puller fan. The thermal switch is adjustable from 90 degrees to 210 degrees. Quote Link to comment Share on other sites More sharing options...
0 Brian. Posted April 5, 2013 Report Share Posted April 5, 2013 I'm running a 16" pusher fan (solely because I couldn't get my shitty clutch fan to release off the waterpump, so it's staying I guess.You IDEALLY want a puller fan. to pull air through the radiator. It's more efficent then trying to push air through it.You also wanna be looking at how many CFM's your fans pushing. My 16" cooling fan pushes ALOT of air. I don't remember the CFM, but it was quite a bit. Soley because E28's cooling systems suck dick, and I still occasionally have to pull over when the engine gets too warm for my comfort, and let the fan do it's work.I'm sure a few people (Chris and Zach) have heard my auxillary fan, it sounds like a jet turbine.If you need any help, let me know. Auxillary fans are 10x better then the shitty mechanical one. Quote Link to comment Share on other sites More sharing options...
0 merl Posted April 5, 2013 Author Report Share Posted April 5, 2013 Jeff, Do you have a link to what sensor you used ? Brian, thanks a ton. I think I am going to start with a pusher but if there are issues, I will move it to puller. Quote Link to comment Share on other sites More sharing options...
0 Jeff Posted April 5, 2013 Report Share Posted April 5, 2013 Jeff, Do you have a link to what sensor you used ? Brian, thanks a ton. I think I am going to start with a pusher but if there are issues, I will move it to puller. i shall find it for you Quote Link to comment Share on other sites More sharing options...
0 Jeff Posted April 5, 2013 Report Share Posted April 5, 2013 fan control http://www.oreillyauto.com/site/c/detail/HDN0/3651.oap?year=1998&make=BMW&model=328i&vi=1313583&ck=Search_3651_1313583_4424&keyword=3651 im pretty sure this is the fan i got too http://www.oreillyauto.com/site/c/detail/HDN0/3701/N0646.oap?ck=Search_electric+fan_N0646_1313583_4424&keyword=electric+fan&pt=N0646&ppt=C0095 Quote Link to comment Share on other sites More sharing options...
0 merl Posted April 5, 2013 Author Report Share Posted April 5, 2013 Thank you sir ! Quote Link to comment Share on other sites More sharing options...
0 Brian. Posted April 5, 2013 Report Share Posted April 5, 2013 Jeff, Do you have a link to what sensor you used ? Brian, thanks a ton. I think I am going to start with a pusher but if there are issues, I will move it to puller. My pusher works really well, but in summer (like last summer, my car over heated ALOT. 90+ all summer... I wanna switch to puller. but my damn clutch fan won't release. RamRod E28 1 Quote Link to comment Share on other sites More sharing options...
0 merl Posted April 5, 2013 Author Report Share Posted April 5, 2013 Brian, I just ordered the tool for the fan and can help you get that off. These radiators really lose a lot of flow when they age. I never overheated in day to day driving but the car was HOT on the track. A new radiator is being ordered as part of this build. When new, the rads work very good and they are only about 175 bucks new. Quote Link to comment Share on other sites More sharing options...
0 Jeff Posted April 5, 2013 Report Share Posted April 5, 2013 My pusher works really well, but in summer (like last summer, my car over heated ALOT. 90+ all summer... I wanna switch to puller. but my damn clutch fan won't release.bring the car to my house and i will remove it! Quote Link to comment Share on other sites More sharing options...
0 Jeff Posted April 5, 2013 Report Share Posted April 5, 2013 Thank you sir !the fan set up works great in my car never went past the middle on my car. even when rage driving. Quote Link to comment Share on other sites More sharing options...
0 merl Posted April 5, 2013 Author Report Share Posted April 5, 2013 Brian, I just ordered the tool for the fan and can help you get that off. These radiators really lose a lot of flow when they age. I never overheated in day to day driving but the car was HOT on the track. A new radiator is being ordered as part of this build. When new, the rads work very good and they are only about 175 bucks new. I think I should have said new a few more times in this post Quote Link to comment Share on other sites More sharing options...
0 Jeff Posted April 5, 2013 Report Share Posted April 5, 2013 I think I should have said new a few more times in this post yea just rub them new parts in why dont you. Quote Link to comment Share on other sites More sharing options...
0 merl Posted April 5, 2013 Author Report Share Posted April 5, 2013 Ha ! ... I didn't mean it that way .. I was pointing out my awful grammar ... Jeff, that sensor goes in the rad where the aux fan temp sensors were ?? Am I thinking of that correctly ?? Quote Link to comment Share on other sites More sharing options...
0 Jeff Posted April 5, 2013 Report Share Posted April 5, 2013 yes in the radiator where the aux fan sensor goes. take the sensor out go to lowes or napa and get the adaptor so you can thred it in the radiator. the sensor is 1/8npt thred. Quote Link to comment Share on other sites More sharing options...
0 merl Posted April 5, 2013 Author Report Share Posted April 5, 2013 Nice ... Thanks a ton. Quote Link to comment Share on other sites More sharing options...
0 Brian. Posted April 5, 2013 Report Share Posted April 5, 2013 Brian, I just ordered the tool for the fan and can help you get that off. These radiators really lose a lot of flow when they age. I never overheated in day to day driving but the car was HOT on the track. A new radiator is being ordered as part of this build. When new, the rads work very good and they are only about 175 bucks new. I have a brand new radiator in the 535I. still warms up. I got my radiator for $100 shipped. Autopartswarehouse= direct fit, not a single problem. rad showed up, no fins bent, nothin. bring the car to my house and i will remove it! Come to my house with the truck! Quote Link to comment Share on other sites More sharing options...
Question
merl
How many of you have installed an electric fan and deleted the mechanical?
My options are:
16" Puller fan in place of mechanical
16" Pusher fan on front of rad since the condensor and aux fan are gone (I like this idea)
dual puller or pusher fans
I am most interested in wiring it up. I would like it to be auto 2 speed with the ability to manually turn it on high.
Thoughts ?
Thanks
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