Forte's

Visit our community sponsor

Thanks Thanks:  0
Likes Likes:  0
Results 1 to 17 of 17

Thread: 2014 Coyote Heater/Defrost Coolant Bypass Switch

  1. #1
    Senior Member
    Join Date
    Oct 2013
    Location
    Huntsville, AL
    Posts
    212
    Post Thanks / Like

    2014 Coyote Heater/Defrost Coolant Bypass Switch

    Guys,

    I have read a number of posts on this subject and still don’t fully comprehend the solution. I have a 2014 Coyote engine and I am installing a FFR Heater/Defrost, and a FFR Wiper.

    Q1) Do I need an electronic heater bypass switch. If so, which one would you recommend?

    Q2) Can the heater and bypass switch controls be consolidated to simplify operation of the heater?

    Q3) Is there an overheating problem on start-up with the heater either on or off?

    Q4) Where could the electronic bypass switch be installed so it won’t interfere with installing the wiper to the left of the heater, looking from the engine compartment?

    Q5) Will I still need to install the coolant bypass hose and reducer between 2014 coyote engine coolant inlet and outlet ports, allowing coolant flow between the cylinders?

    Thanks for your comments in advance,

    Damien, aka 4.6 litre

  2. #2
    On a roll Al_C's Avatar
    Join Date
    Aug 2014
    Location
    Wheaton, IL
    Posts
    1,408
    Post Thanks / Like
    Here's a partial answer.

    1. I do not believe so. I followed Ducky2009's lead and installed an autozone part. I'd have to dig around for the part number, but will find it eventually. David probably has it at his fingertips. Here's a photo of the heater, bypass valve and wiper:



    2. The heater has a pull/turn knob. The pull part is a cable that connects to the bypass, so yes, it works as you described.

    3. I have no idea about overheating. Mine has not overheated yet, but I'm only go-karting.

    4. See photo above.

    5. I don't have any reducers (that I recall) installed. Again, I followed David's lead on this one.

    It was intimidating to plumb this thing initially, but now that I put it together it makes sense!
    Mk IV Roadster - #8650 - delivered 7-17-2015 - first start 7-28-2018 - first go-kart 10-13-2018 - licensed and on the road 9-9-19: body/paint completed 3-17-2020.
    Complete kit / 2015 Coyote / TKO600 / IRS / Wilwood brakes / Mid-Shift mod / Power Steering / Heater and Seat Heaters / RT turn signal / Breeze radiator shroud and mount

  3. #3
    Senior Member edwardb's Avatar
    Join Date
    Feb 2011
    Location
    Lake Orion, Michigan
    Posts
    10,547
    Post Thanks / Like
    This situation isn't that complicated. The Coyote has the heater hose connections on the heads, with the outlet (to the heater) on the right side, and the inlet (from the heater) on the left side. The design requires coolant to flow between the two sides at all times. So the heater control valve must be a full bypass design, meaning when closed (e.g. coolant not routed to the heater core) the coolant must still flow through the valve. I'm not familiar with with Autozone piece described above, but a quick Google and Amazon search shows multiple options for this style valve. Can be either electronic (e.g. motor driven with a control circuit) or manual cable actuated. I am familiar with the Thermotion brand electric valve and controller Factory Five provides as part of the Gen 3 Coupe A/C-Heat option. But probably more complicated than necessary for some builds, especially if you're only doing heat and not A/C.

    There shouldn't be a problem locating a valve to not interfere with the wipers. Just route the hoses to an available space. And also not any reason to be concerned about a bypass hose or restrictor if you're installing a heater. That's only applies if no heater. Also shouldn't be any issues with overheating as long as coolant is flowing between the two sides at all times.
    Last edited by edwardb; 04-02-2019 at 05:48 PM.
    Build 1: Mk3 Roadster #5125. Sold 11/08/2014. Build 2: Mk4 Roadster #7750. Sold 04/10/2017. Build Thread
    Build 3: Mk4 Roadster 20th Anniversary #8674. Sold 09/07/2020. Build Thread and Video. Build 4: Gen 3 Type 65 Coupe #59. Gen 3 Coyote. Legal 03/04/2020. Build Thread and Video
    Build 5: 35 Hot Rod Truck #138. LS3 and 4L65E auto. Rcvd 01/05/2021. Legal 04/20/2023. Build Thread. Sold 11/9/2023.

  4. #4
    Senior Member BEAR-AvHistory's Avatar
    Join Date
    May 2015
    Location
    Raleigh NC, OIB NC
    Posts
    1,593
    Post Thanks / Like
    No point in not having a bypass. Keeps hot water out of the heater core in the summer. Manual or electric your choice. I run an electric one & the rheostat controls water flow for temperature control. I use two controls on the dash. 3 speed & off fan & the temperature control.



    Two knobs on the right side are Fan & Temperature. Bezels are Bronco with the labels engraved.



    Bypass valve
    Kevin
    MKIV #8234
    Coyote '14/TKO-600/3-Link 3:55 Rear
    I love the smell of 100 octane in the morning.
    NITTO NT01 275X40X17ZR - 315X35ZRX17
    Delivered 2/7/14 - Plate "COYOTE NC1965" 3/25/15

  5. #5
    Senior Member Fixit's Avatar
    Join Date
    Aug 2017
    Location
    Minneapolis 'Burbs
    Posts
    909
    Post Thanks / Like
    Here's what I came up with on #9365, which is running wipers. Link to part 1 (scroll down for pt2)
    I used the FFR supplied push/pull 3-speed switch. Old Air Products offers 2 styles of bypass valve, so depending upon your routing or design you can have it pull to open, or push to open... mine is pull to open
    John D. - Minneapolis 'Burbs

    1965 El Camino - LT-1, 4L60e, 4wh discs, SC&C susp.
    2013 F-150 Platinum - Twin Turbo 3.5
    2018 Mk4 Roadster w/ Coyote - #9365 - Build Thread Delivery 7/3/18, 1st Start 1/4/19, 1st Road Mile 5/5/19, Legal 6/18/19, In Paint 2/25/21, Done (?) 4/2021

  6. #6
    Senior Member
    Join Date
    Oct 2013
    Location
    Huntsville, AL
    Posts
    212
    Post Thanks / Like
    Guys,

    Thanks a lot for so many fast and great responses. As always I'm very impressed by the expertise's of the Forum members. You've helped a lot.

    Damien, aka 4.6 litre

  7. #7
    Senior Member
    Join Date
    Oct 2013
    Location
    Huntsville, AL
    Posts
    212
    Post Thanks / Like
    Al_C,

    In your layout is there any room left to install a small glove compartment?

    Damien

  8. #8
    Senior Member Fixit's Avatar
    Join Date
    Aug 2017
    Location
    Minneapolis 'Burbs
    Posts
    909
    Post Thanks / Like
    Here was my solution to a glovebox when running a heater & wipers... again, scroll down for pt.2
    John D. - Minneapolis 'Burbs

    1965 El Camino - LT-1, 4L60e, 4wh discs, SC&C susp.
    2013 F-150 Platinum - Twin Turbo 3.5
    2018 Mk4 Roadster w/ Coyote - #9365 - Build Thread Delivery 7/3/18, 1st Start 1/4/19, 1st Road Mile 5/5/19, Legal 6/18/19, In Paint 2/25/21, Done (?) 4/2021

  9. #9
    Senior Member Dave Howard's Avatar
    Join Date
    Feb 2012
    Location
    North Bay, Ontario
    Posts
    534
    Post Thanks / Like
    I must be pretty lucky. I didn't install a heater bypass valve. I used the control valve and cable supplied in the kit. Installed it on the passenger side heater hose, then connected the drivers side heater hose directly to the heater core. When the control valve is closed, the heater blows no warm air. Lots of miles under all types of driving conditions and the Coyote is doing fine.
    MkIV #7854, Kit picked up September 2012, Coyote/BOSS 302 intake tuned at 488HP, TKO600, Center Force, Moser 8.8, driveshaft safety hoop, Stainless Header 4x1x4 headers, Gas-N-sidepipes, rad shroud, Wilwoods, NO PS/PB, heater/defroster, heated seats, wipers, Herb door panels, Dynamat Extreme sound/heat dampening, premium Rodtop top, Fast Freddie lexan wind screen, Nitto 555R, drop trunk battery, drop trunk storage,

  10. #10
    Senior Member
    Join Date
    Jan 2014
    Location
    Conesus, NY
    Posts
    176
    Post Thanks / Like
    Quote Originally Posted by BEAR-AvHistory View Post
    No point in not having a bypass. Keeps hot water out of the heater core in the summer. Manual or electric your choice. I run an electric one & the rheostat controls water flow for temperature control. I use two controls on the dash. 3 speed & off fan & the temperature control.



    Two knobs on the right side are Fan & Temperature. Bezels are Bronco with the labels engraved.



    Bypass valve
    Same one I used on my Coyote. worked great!
    Chuck Krueger
    MK4 Kit - Picked up 4/5/14, Complete Kit, 3-Link, Wilwood upgrade, Coyote, TKO 500, First Start 7/25/15
    2000 C5
    2003 C5 Z06
    2007 C5 Z06

  11. #11
    Senior Member
    Join Date
    Oct 2013
    Location
    Huntsville, AL
    Posts
    212
    Post Thanks / Like

    Vintage Air Solution

    Guys,

    Not to gum-up the works but I talked to Vintage Air this morning. They suggested using their bypass fitting found at https://www.vintageair.com/search-results/?sqry=344470

    The tech rep said this will solve the problem. Vintage Air will email me the Ford Cooling drawing with the fitting superimposed on it. If you’re interested I’ll post it? If you don't think this can solve the problem let me know?

  12. #12
    David aka Ducky2009 Ducky2009's Avatar
    Join Date
    Dec 2016
    Location
    Lilburn, GA
    Posts
    774
    Post Thanks / Like
    I ended up making an L shaped bracket and installed it and the 4-way valve on the firewall. 4-way valve P/N 74809 can be found at most auto parts stores.

    Heater 4-Way Valve Bracket.jpg Heater Hoses Installed.jpg
    MK4 Build #9035 Delivered 2/17/17, First Start & Go-Kart 6/2/17, Licensed 9/1/17
    Paint - Lightning Blue Metallic, No Hood Scoop, No Stripes
    Gen 2 Coyote Engine & TKO-600. Solid Axle, 8.8-3.55, Power Steering, Power Brakes, Dual Roll Bars
    Heater and Glove Box, Drop Trunk, Wipers, Radio, FFR Vintage Gauges, Custom Dash
    Build Thread: http://thefactoryfiveforum.com/showt...MK4-Build-9035

  13. #13
    Senior Member BEAR-AvHistory's Avatar
    Join Date
    May 2015
    Location
    Raleigh NC, OIB NC
    Posts
    1,593
    Post Thanks / Like
    Quote Originally Posted by ckrueger View Post
    Same one I used on my Coyote. worked great!
    Between the by-pass valve & the MOROSO tank have never had a overheat problem even at 105*F in the summer in traffic. Think most issues are incorrect coolant flow & trapped air in the system. As an added extra the Everson one piece front end sheet metal & the Breeze upper trim piece 100% of the air cumming into the front opening goes through the radiator.



    Arrow is old coolant tank which did not work. Replaced with the MOROSO unit
    Last edited by BEAR-AvHistory; 04-08-2019 at 12:27 PM.
    Kevin
    MKIV #8234
    Coyote '14/TKO-600/3-Link 3:55 Rear
    I love the smell of 100 octane in the morning.
    NITTO NT01 275X40X17ZR - 315X35ZRX17
    Delivered 2/7/14 - Plate "COYOTE NC1965" 3/25/15

  14. #14
    On a roll Al_C's Avatar
    Join Date
    Aug 2014
    Location
    Wheaton, IL
    Posts
    1,408
    Post Thanks / Like
    Quote Originally Posted by 4.6 litre View Post
    Al_C,

    In your layout is there any room left to install a small glove compartment?

    Damien
    Sorry, Damien, just saw this now (I'm only 6 days late...) Here's a quick photo. Short answer - nope. It's pretty tight in there.

    Mk IV Roadster - #8650 - delivered 7-17-2015 - first start 7-28-2018 - first go-kart 10-13-2018 - licensed and on the road 9-9-19: body/paint completed 3-17-2020.
    Complete kit / 2015 Coyote / TKO600 / IRS / Wilwood brakes / Mid-Shift mod / Power Steering / Heater and Seat Heaters / RT turn signal / Breeze radiator shroud and mount

  15. #15
    Junior Member
    Join Date
    Jun 2018
    Posts
    2
    Post Thanks / Like

    Coolant Bypass - Vintage Air

    Quote Originally Posted by 4.6 litre View Post
    Guys,

    Not to gum-up the works but I talked to Vintage Air this morning. They suggested using their bypass fitting found at https://www.vintageair.com/search-results/?sqry=344470

    The tech rep said this will solve the problem. Vintage Air will email me the Ford Cooling drawing with the fitting superimposed on it. If you’re interested I’ll post it? If you don't think this can solve the problem let me know?
    Hi, Ive got a 2017 Gen 2 Coyote with vintageair, interested in the marked up circuit sketch for installing the vintageair Coyote "H" pipe bypass circuit, It will be installed prior to heater shut off, I'm right hand drive so my plumping will be slightly different,cheers mike

  16. #16

    Join Date
    Feb 2011
    Location
    Colorado Springs
    Posts
    1,381
    Post Thanks / Like
    I'm with you. The valve in my heater line is simply an On/Off valve. Although I have not driven it in real summer heat yet, It has been pretty nice this pat week. Even in city traffic, it stays cool.

    I also added this kit during assembly. http://www.modularmotorsportsracing....roducts_id=555 It connects the back of the heads with a hose, and helps keep #8 cool. Is this the reason mine runs cool with the heater off? IDK, maybe. Just another data point.

    IMG_0231.JPG

    IMG_0239.JPG
    .boB "Iron Man"
    NASA Rocky Mountain, TTU #42, HPDE Instructor
    BDR 1642: Coyote, 6 Speed Auto, Edelbrock Supercharger
    Member: www.MileHiCobraClub.com
    www.RacingTheExocet.com

  17. #17
    Senior Builder lgordon's Avatar
    Join Date
    Dec 2017
    Location
    Bellevue, WA
    Posts
    83
    Post Thanks / Like
    My solution to having a heater/defroster, windshield wiper and glove box was similar to others but I suspect unique in a few details. I built a pop out box to move the heater core into the engine compartment so there is easily room enough for a standard glove box. I chose to use an electronically controlled heater bypass valve. I also had one of the heater tubes shortened by a radiator shop to help keep it all compact and clear the engine.
    Attached Images Attached Images
    Last edited by lgordon; 04-28-2019 at 10:26 PM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Replica Parts

Visit our community sponsor