Lower radiator hose - who is using what?

New Hemi Engine Swaps

  1. Uhcoog1

    Uhcoog1 Well-Known Member

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    I just measured the diameters on the water pump necks:

    Actual measurements, using digital calipers:
    top neck lip: 1.85"
    top neck behind lip: 1.75"
    bottom neck lip: 1.76"
    bottom neck behind lip: 1.65" (42mm? or 1 5/8"?)

    Not real sure what the right move is for what size lower hose to run. Those with running cars - what lower radiator hose are ya'll using?

    I ordered a 1 3/4 to 1 1/2 adapter last week. It's not here yet. I'll report back when it gets in.
     
  2. Rocky_JS

    Rocky_JS 'cuda

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    I was fighting the same battle went through all the hoses in my store found a couple that would fit but all looked jacked up.
    I took my radiator to the local radiator shop they changed the lower hose opening size and had a repair done to the top tank and it only cost $50.00 and one day. Now I am back to the regular old hose size.
     
  3. fastcorgigarage

    fastcorgigarage Well-Known Member

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    I'm contemplating having someone pipe weld me some copper pipe together in place of my upper and lower radiator hoses.
     
  4. Uhcoog1

    Uhcoog1 Well-Known Member

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    Thanks for the effort fellas!

    I just left Autozone, and then did a little looking online to see what options there are. I just ordered an upper hose for a 2006 dodge charger 5.7, and a lower hose for a 2008 jeep grand cherokee srt8 from Rock Auto. I'll let ya'll know when they get in and how they fit.

    Upper radiator hose for passenger side neck:
    Dayco C72282 - ID of 1.44 and 1.72 (for a 2006 Dodge Charger 5.7 hemi)
    Gates 22940 - ID of 1.44 and 1.75

    Lower radiator hose for passenger side neck:
    Dayco E72225 - ID of 1.59 and 1.78 (for a 2008 Jeep Grand Cherokee SRT8 )
    Gates 23036: 20.6" length, 1.63" ID, 1.75" ID

    Upper radiator hose for drivers side neck:
    ?? - Jeep SRT8 upper radiator hose - appears to be 1.5" radiator neck, 1.75" water pump neck
    Goodyear 62968

    Lower radiator hose for drivers side neck:
    Dayco E72281 - 1.44 & 1.66 ID (I measured this one in the store- the water pump side was ~1.5" I think, and the radiator side was smaller) - this is for a 5.7 dodge charger
    *I think a SRT8 lower radiator hose would have a larger hose ID for the radiator side. I don't know, as autozone and Rock Auto both do not have hoses for the SRT8 cars, period. Looks like you'll have to go to the dealer.
     
  5. Black 69 Dart

    Black 69 Dart Well-Known Member

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    I was looking at using the upper srt 8 jeep hose as my upper inlet on the rad is on drivers side. For the lower hose I had my lower 340 hose on as the outlet on the rad is on pass side. Both would need trimming but I think it would work. I am now looking at a custom setup so I am thinking of using rubber braided and an fittings.

    Trevor
     
  6. mopardude318

    mopardude318 Well-Known Member

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    i used 2 different uppers and 2 different lowers. cut em in half and used radiator hose couplers from speedway motors. works fine for me.

    [​IMG]

    [​IMG]
     
  7. 73SwingerBuild

    73SwingerBuild Well-Known Member

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    This should work fine until the motor torques over in the mounts. Any plans for flex fittings?
     
  8. 5.7 hemi

    5.7 hemi FABO Gold Member FABO Gold Member

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    Looks like there is enough "give" in the hoses, so I dont think that will be a problem, but a torque strap could be used if somebody is worried about it.
     
  9. 73SwingerBuild

    73SwingerBuild Well-Known Member

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    I was refering to the solid copper pipe comment. Rubber hoses seem to work fine lol.
     
  10. mopardude318

    mopardude318 Well-Known Member

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    im sorry, i wasnt paying attention. this is for new hemi swaps. lol.

    i guess you could still use the idea...
     
  11. 69rrbruce

    69rrbruce Member

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    This is the same concept I used on my lower hose.
    Where did you get those wider hose clamps??
     
  12. Tincup

    Tincup Well-Known Member

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    Here is what I used, Goodyear 60817 1 1/2" on one end, 1 3/4" on the other. Some trimming is necessary, but fits good.
     

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  13. mopardude318

    mopardude318 Well-Known Member

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  14. 69rrbruce

    69rrbruce Member

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    Thanks! should have known.
     
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