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Hot Rods Heater bypass

Discussion in 'The Hokey Ass Message Board' started by klawockvet, Jan 15, 2018.

  1. klawockvet
    Joined: May 1, 2012
    Posts: 202

    klawockvet
    ALLIANCE MEMBER

    I want to be able to either quickly disconnect the heater hoses at the outlet on a SBF and plug them or switch to a bypass hose. I thought someone should make a small polished valve that would install into the manifold and water pump but so far I haven't found one. I would prefer not to put heater valves in the middle of the hoses, as they look crappy and I want to completely block off the hot water into the heater. I need some suggestions. Ideas???
     
    chryslerfan55 likes this.
  2. The 39 guy
    Joined: Nov 5, 2010
    Posts: 2,320

    The 39 guy
    Member

    Well dry couplers would give you quick way to just take the hoses out the engine bay but they are usually very expensive and because if their design, limit flow when you need it. I looked for a chromed valve and found nothing suitable. The Appallo 3 way valve listed below would work with some adapters and could be taken apart and polished. But by the time you install hose fittings it would be pretty bulky.

    This valve pictured below is I think is the traditional choice for shutting off the water at the head or water pump. It looks like it is cad plated . They are relatively small and inexpensive at $11.00.Maybe your local NAPA store would have them. I think I would make up a wrench for turning the handle on the valves as they are tough on fingers.......

    Sam
    [​IMG]

    https://www.summitracing.com/parts/...MI9_2y9cna2AIVBqrsCh3e0AshEAQYAyABEgJOJvD_BwE

    https://www.google.com/search?q=3+w...I3AE&biw=1138&bih=510#spd=8322053638856587122
     
  3. Atwater Mike
    Joined: May 31, 2002
    Posts: 7,971

    Atwater Mike
    Member

    Split a 3/8" drive 7/16" deep socket with a .183" cutoff saw blade, about 1/2" deep. Speed handle is the ticket!
     
    scrap metal 48 likes this.
  4. How is that ??
    Try grainger
    image.jpeg image.png
     
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  5. The 39 guy
    Joined: Nov 5, 2010
    Posts: 2,320

    The 39 guy
    Member

    Nice valve! Much better than the old standby I posted.
     
    31Vicky with a hemi likes this.
  6. 325w
    Joined: Feb 18, 2008
    Posts: 4,902

    325w
    ALLIANCE MEMBER
    from texas

    Very good idea for a shut off. $9.00 bucks at grainier.
     
  7. Mr48chev
    Joined: Dec 28, 2007
    Posts: 22,404

    Mr48chev
    ALLIANCE MEMBER

    I've used the one that the 39 Guy posted a few times on rigs with similar issues. The one thing that you don't ant to do is eliminate coolant in the heater core all together. My experience with totally eliminating the heater core is that they often end up leaking for one reason or another.
     
  8. xracer40
    Joined: Jun 20, 2010
    Posts: 298

    xracer40
    Member

  9. gatz
    Joined: Jun 2, 2011
    Posts: 1,175

    gatz
    Member

  10. gatz
    Joined: Jun 2, 2011
    Posts: 1,175

    gatz
    Member

    ...just had one of them started leaking; after 3 years. Contacted USP and they said that they were only good for 70º w/ ethylene glycol. (fine print, ya know) Sorry if I misled anyone.

    If a quick-disconnect for engine coolant is needed, USP does sell chrome-plated brass ones LQ6 that will work, however, they're more expensive.

    http://www.wcvirtualversion.com/publication/?i=454917&p=174#{%22page%22:174,%22issue_id%22:454917}
     
  11. Elcohaulic
    Joined: Dec 27, 2017
    Posts: 207

    Elcohaulic
    Member

    Ball valve.... Couple bucks at home depot..
     

    Attached Files:

  12. gatz
    Joined: Jun 2, 2011
    Posts: 1,175

    gatz
    Member

    The OP said; "I want to be able to either quickly disconnect the heater hoses at the outlet on a SBF and plug them or switch to a bypass hose."

    The whole idea of the Quick-Disconnects sold by US Plastics is to be able to disconnect/reconnect with little to no loss of fluid. Anytime you take a heater hose lose without some means to cap it off, you'll have a sticky mess of coolant somewhere.
    They should fit the bill and they look good too.
     
  13. Ebbsspeed
    Joined: Nov 11, 2005
    Posts: 4,033

    Ebbsspeed
    ALLIANCE MEMBER

    Get one of these kits:

    https://www.ebay.com/itm/RV-Trailer...ash=item1a45140dc5:g:YukAAOSwkdFajUi8&vxp=mtr

    Plumb it like this: (Note: you can eliminate the center valve because the bypass valves are two-way. Just connect the third nipple on the two valves together):
    Heater Bypass.jpg

    And you won't lose a drop when you switch from heat to bypass. The valves are 1/2 inch NPT so should flow quite well when you want heat although not as well as an unobstructed hose, but any valve you put in will do that.
     
    Last edited: Apr 16, 2018 at 6:36 PM
  14. VANDENPLAS
    Joined: Dec 14, 2009
    Posts: 402

    VANDENPLAS
    Member

    F4BAC443-9934-4F18-A67D-7C1DBE282DA7.jpeg E1036449-6FE5-46BD-8BD8-6B8FEA936AFE.jpeg



    Quick disconnect , not cheap but will only loose whatever fluid was in the actual connector at the time of disconnect.
     
  15. Ebbsspeed
    Joined: Nov 11, 2005
    Posts: 4,033

    Ebbsspeed
    ALLIANCE MEMBER

    Maybe when they opened their first store in 1978. Now they're four times that much. Minimum. I worked there between jobs a few years ago......
     

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