Author Topic: radiator replacement choices  (Read 10373 times)

Offline Irish_Alley

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Re: radiator replacement choices
« Reply #15 on: October 15, 2015, 03:44:45 pm »
p7387 two things.
1. we all try to help each other the cheapest way without just trowing parts at our trucks. jb weld can keep a engine thats had a rod through the side running. if it doesnt hold then something else had a effect 
2. measure your old one and go from there
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline zieg85

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Re: radiator replacement choices
« Reply #16 on: October 15, 2015, 11:36:37 pm »
I am finding measuring don't match with any on line for my 84.  Autozone lists 3 while Advanced Auto only lists 2.  I'd like to know what they measure when posting what they offer.  I am leaning toward having mine re-cored but need to search out the local area for an old school shop.  Ebay has some decent prices on all aluminum ones but again sizes are all over the map...
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
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Offline p7387

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Re: radiator replacement choices
« Reply #17 on: October 16, 2015, 02:08:39 am »
my specific leak is around the neck seam for the upper radiator hose, very subtle but its there.
i prepped the area carefully and applied it carefully. while i have had success with jb weld in other cases i have never had a successful result when the crack is around the "neck" area in a radiator.

i am not opposed to having it repaired by a knowledgeable shop but i dont think its time or cost effective when a new rad is about $100-$110

as zieg said it hard to find a definitive part choice when they list 2 sizes for the same vehicle

Offline SkinnyG

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Re: radiator replacement choices
« Reply #18 on: October 16, 2015, 05:07:00 am »
I had a tank come loose on my "Taiwan" rad in my truck.  I took it to the local rad shop to see if it could be fixed.

CDN pricing:

$160 to fix the tank
$100-200 for a basic new rad
$300 for a new rad, same 3-row core (they said this wasn't enough rad for the cammed, high compression motor in my truck)
$500 for a high-density 4-row core using my old tanks.

Find out your pricing, and weigh your options.  I wasn't too keen on paying $160 to fix a tank, only to potentially have the other tank come off later.
The Crusty Chevy: 1977 Silverado, shortboxed & dropped, potato-potato.

Offline VileZambonie

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Re: radiator replacement choices
« Reply #19 on: October 18, 2015, 06:36:14 pm »
Solder it
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline Dr_Snooz

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Re: radiator replacement choices
« Reply #20 on: October 18, 2015, 08:11:25 pm »
Exactly what I was thinking. That shouldn't be hard to braze at all and the rod is super cheap (<$8 at HD).

Another possibility is something that has stymied me in the past. The bulbed hard line on the tank likes to corrode right where the hose clamp tightens around it. When the corrosion bubbles up enough, it allows coolant to seep past, no matter how hard you tighten the clamp. I had to remove the hose, then chisel and steel wool the corrosion off the hard line bulb connector. That seems to have fixed the worst of my leaking.
« Last Edit: October 18, 2015, 08:17:37 pm by Dr_Snooz »
1989 Chevy Suburban V-2500, 5.7L, TH400

1990 Chevy C-3500 Ext. Cab, 7.4L, 3L80

2009 Chevy Silverado 1500 WT 4WD, 4.8L, 4L60

Offline p7387

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Re: radiator replacement choices
« Reply #21 on: October 19, 2015, 10:55:59 pm »
I can try soldering
Will regular plumbing solder and flux for copper pipe do along with a basic propane torch?
Or will I need a different torch and materials

Offline VileZambonie

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Re: radiator replacement choices
« Reply #22 on: October 24, 2015, 06:53:35 pm »
Just like you would fix a copper pipe in your house, clean the area, apply flux, heat, solder, clean solder joint.
,                           ___ 
                         /  _ _ _\_
              ⌠¯¯¯¯¯'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline zieg85

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Re: radiator replacement choices
« Reply #23 on: October 24, 2015, 07:33:38 pm »
Mine was too far gone to fix.  One of the tank was bulging and would eventually spit.  I did buy an aluminum/plastic and it was a perfect fit.  I put a new waterpump on it while I was in there.  No problems on a 287 mile trip back to Indiana yesterday.
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
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Offline Stewart G Griffin

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Re: radiator replacement choices
« Reply #24 on: October 25, 2015, 08:55:44 am »
What is the best brand, money no object?


What are some other good brands, money an object?

i've had good results with the brand carried by Advance auto, but just checking for alternatives.

Offline SkinnyG

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Re: radiator replacement choices
« Reply #25 on: October 25, 2015, 10:42:39 am »
I would worry less about brand, and talk to your local rad shop.  They can custom build, and it will be hand-built ~for~ you, and tested, and easy warranty if something goes wrong.
The Crusty Chevy: 1977 Silverado, shortboxed & dropped, potato-potato.