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Pat
Bone Stock
Posts:22
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| 08/27/2007 8:44 AM |
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| i just did a body swap with a 1977 Datsun pickup on to an 1981 Toyota 4X4 frame, i now have no room under the hood for a radiator, even taking the fan off the water pump to put an electric fan in there is still no room.So if i was to run the radiator to behind the cab with an electric fan is it possible to run metal pipe down the frame then use radiator hose to make the connection, or would it be best to use just regular radiator hose all the way? Thanks for any help!! |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 08/27/2007 8:36 PM |
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Hey Pat - definately use metal pipe, or even high-temp PVC, not radiator hose. The nice thing about using pipe or PVC is that it, in itself, will help cool the fluid.
Very long pieces of radiator hose will eventually swell, blister and pop. Plus, if you get oil, brake fluid, and the likes on it, it will start to decay the rubber. Plus, radiator hose is less forgiving on rocks than pipe or pvc. ;)
Great question!
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
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'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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SnoMan
Lift & Lockers
Posts:943
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| 08/28/2007 4:31 AM |
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| The trick with rubber hoses is to loose the 15 or 16 PSI radiator cap. I have one vehicle that is 18 years old and another that is 28 and they have the original hoses and they are not swelled or soft. I use a 7 PSI cap and a 70/30 antifreeze mixture. The use a high pressure cap to raise coolant boiling point and higher concentration does same thing. I have never had a overheating or coolant loss problem and one of them has been cross country and through rockies more than 1 dozen times and even up Pikes Peak 3 times and seen temps of over 105 while chilling us with A/C. It has never been over 210. Another nice thing about lower pressure caps is that if a leak develops if is not explosive which would be nice with a remotely mounted radiator. You could even run pure Propylene Glycol (non toxic antifreeze) as it has it highest boil boil (around 340) and lowest freeze point (around minus 90) in pure state unlike regular antifreeze and would cool fine even with a no pressure cap at all (though you would need at least a few PSI to keep it from leaking off road at strange angles) Even my 2000 K3500 has a 7 PSI cap and 70/30 and it never runs warm either even towing in hot weather. |
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Visit the SnoMan at
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Pat
Bone Stock
Posts:22
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| 08/30/2007 9:34 AM |
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| Thanks Rick! What kind of metal pipe would be best? |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 09/02/2007 9:48 AM |
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quote:
Originally posted by SnoMan
You could even run pure Propylene Glycol (non toxic antifreeze) as it has it highest boil boil (around 340) and lowest freeze point (around minus 90) in pure state unlike regular antifreeze and would cool fine even with a no pressure cap at all (though you would need at least a few PSI to keep it from leaking off road at strange angles) Even my 2000 K3500 has a 7 PSI cap and 70/30 and it never runs warm either even towing in hot weather.
Water is much better at cooling though, which is the whole point of having a cooling system. The cooling effect of propelyne glycol isn't nearly as efficient.
Pat - Any schedule 40 pipe would do, just get something relatively thin as you don't need something like .090 - that would be overkill.
Snoman is right though, even when hot, a cooling system doesn't build up a whole lot of pressure, so don't worry too much about bursting.
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
- - - - - - - - - - - - - - - - - - - - -
'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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SnoMan
Lift & Lockers
Posts:943
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| 09/02/2007 3:59 PM |
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quote:
Originally posted by webby4x4
Water is much better at cooling though, which is the whole point of having a cooling system. The cooling effect of propelyne glycol isn't nearly as efficient.
Not sure how this myth started. Glycol is denser and has more mass and take more energy to heat it than water. Water does take about 50% energy to convert it to steam than glycol (ie overheat and boil dry) so maybe that is where it started but you do not work in a boil over state anyway so water gives you nothing here other than cheap. |
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Visit the SnoMan at
www.thesnoman.com |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 09/03/2007 11:31 AM |
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You know what SnoMan? You're absolutely right!
I just did some reasearch, and found that in controlled environments, Ethelyne Glycol boils at 387 F, and water at 212 F.
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
- - - - - - - - - - - - - - - - - - - - -
'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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