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Thread: Cooling Fans, who's are better?

  1. #11
    Senior Member
    Join Date:  Dec 2016

    Posts:    166

    I just installed Toby's fans and they work well. They move a lot of air. They are quieter but you can hear them if you listen. I also have Dave's electronic fan fail relay so it will indicate with the fan fail light if either or both fans fail.

    Ron

  2. #12
    Member hippieman9's Avatar
    Join Date:  Jan 2018

    Location:  Haw River, NC

    Posts:    67

    My VIN:    06668 81' Grey interior, 5 speed, Grooved hood. Previous owner of 16301, in 2001.

    Quote Originally Posted by DMC-Ron View Post
    I just installed Toby's fans and they work well. They move a lot of air. They are quieter but you can hear them if you listen. I also have Dave's electronic fan fail relay so it will indicate with the fan fail light if either or both fans fail.

    Ron
    Thats what I am leaning towards doing. Toby's fans and Daves Fan Fail module. Seems like a very nice combo.

  3. #13
    Senior Member Flash66's Avatar
    Join Date:  May 2014

    Posts:    258

    My VIN:    16811

    Cooling Fans, who's are better?

    Quote Originally Posted by hippieman9 View Post
    Thats what I am leaning towards doing. Toby's fans and Daves Fan Fail module. Seems like a very nice combo.
    I cannot stress enough the advantage of coupling Dave’s fan fail relay along with his electronic otterstat. Remove that antiquated, sensitive and failing device from your Delorean and catch up with modern control of your fan system. Not only can you rely on it to make sure cooling fans are running when they’re supposed to, but also eliminates the risk involved when air is introduced into the system that your fans will not run due to the stock otterstat not touching water. To add to its functionality, if there’s s temperature issue it will beep and warn you if the temp rises past any threshold you set and the best part for me is I can adjust it to have the fans come in at any temp I desire. In my opinion this is probably the most intelligent modification anyone has produced to ensure a Delorean will not suffer engine damage from a cooling system issue or simply not noticing that your gauge is elevated at any given time. One hell of an insurance policy for only $79.00 if you ask me and the device works flawlessly!

    If you value your Delorean, do yourself a favor and install one of these, and you can thank me later for the advice when you avoid your next overheat.

    To add, the fan fail relay eliminates the burning hot fuse jumpers as well which is the case even with aftermarket fans. The fuses in the relay are cool to the touch on my car despite desert heat where I live and fans running for long intervals.

    Edit: above I mentioned “remove”. I meant to remove the variable of failure, not the actual device.
    Last edited by Flash66; 05-09-2018 at 03:31 PM.

  4. #14
    Delorean Guru
    Join Date:  May 2011

    Location:  Northern NJ

    Posts:    6,473

    My VIN:    10757

    Club(s):   (DMA)

    Changing the fans to the more modern, lower current type is much less of a strain on the car's electrical system. When those OEM fans both kick on at the same time (when you don't have a relay that will sequence them) is such a hard hit that you can actually feel it in the gas pedal. That said it is important that the fans be installed correctly. They should be shrouded but you can't use the stock shroud. They need to be well fastened but there is no easy way to do it. Don't do the fans to compensate for a bad radiator or other problem that causes the motor to run hot. If you do the fans it is probably the time to get a new, better radiator so you can do everything at once. Make sure you have the uprated cooling fan circuit breaker. A Fanzilla or other solid-state relay controller is a great addition, much better than those fan fail relay jumpers that were only meant to be a "temporary" fix! The stock Otterstadt switch doesn't have a high failure rate. I don't like the override switch, too easy to forget it, leave it on, and run the fans continuously. If the car is working right you should never need it. Consider adding an overflow bottle to the radiator cap dump hose. Use 50/50 soft water and a premium Anti-Freeze like Prestone (the good ole green stuff).
    David Teitelbaum

  5. #15
    Senior Member DMC-81's Avatar
    Join Date:  Apr 2014

    Location:  Florida

    Posts:    1,539

    My VIN:    <2000

    Club(s):   (DCF)

    Quote Originally Posted by David T View Post
    When those OEM fans both kick on at the same time (when you don't have a relay that will sequence them) is such a hard hit that you can actually feel it in the gas pedal.
    I wouldn't agree with that based on my experience. I think that can happen when one or more systems are in marginal condition. I am running restored (disassembled, cleaned, and case painted) OEM fans with a new DMC radiator & cooling system kit (K118675), DMC alternator 110101, and upgraded DMC relay (K111168A) and fuse (106913) kits. No fan sequencing relay yet. So far, I find these cooling and electrical systems to be rock solid. Even in 100 + degree Florida summer days, it has never overheated, and I never see a dip in the voltage gauge or feel it in the gas pedal when the fans come on. I get the desire to install low amp fans, but I haven't seen the inferior performance, or impact on the electrical system of the OEM fans yet.

    Dana

    Delorean status: Restoration finished. DMC's BRP program completed, and CECF 2017 & 2018 Platinum Award winner.

    Pictures and comments of my restoration journey are in the albums section on my profile.

    .

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