Pressure tested the radiator and two leaks from front and rear fins...SOLUTION? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

CEE1NG_RED · 07-25-2012, 09:43 PM

Any way to fix this without buying a new radiator? Pressurized the radiator to 16#s and the leaks are coming from two locations of the fins, front and rear. Any solutions? JB WELD?? Seems that the previous owner had also fixed some fins using I dont know what solution. I attached a pic of it, where it has some kind of square stamped glue substance on the fin area.

Also, what's the difference with 1, 2, 3, 4 core radiators and how can you tell how many cores you have on the truck? If solution does not work, what radiators out there are still made of aluminum or metal rather than plastic and how many cores? Thanks again...

doubleb's69 · 07-25-2012, 09:59 PM

Anything you do will probably fail not to far down the road, just my opinion. If your take you cap off you can count the rows of tubes thats how I have always determined how big it was. The 4 core in my 69 GMC had a leak in it and I bought a new all metal 4 core from O'Reilly's for $170. It dropped right in and has worked great for me. Otherwise check Craigslist for one.

GRX · 07-25-2012, 10:02 PM

Media blast the area, clean well, apply flux, and solder.

airdale94 · 07-25-2012, 11:11 PM

Just for clarification it's the tubes that are actually leaking. Like GRX said you can clean and solder. You can push (break away) the fins from the tubes to gain better access. Then solder with a torch, propane will do. That's what the old radiator shops did.

It does look like that epoxy method worked also.

CEE1NG_RED · 07-26-2012, 01:19 AM

Quote:

Originally Posted by airdale94

Just for clarification it's the tubes that are actually leaking. Like GRX said you can clean and solder. You can push (break away) the fins from the tubes to gain better access. Then solder with a torch, propane will do. That's what the old radiator shops did.

It does look like that epoxy method worked also.

You think the epoxy method is JBweld or the Permatex radiator puddy?

And what's the part # of that radiator for $170? Also do you think my 78 motor has a 67 radiator or a '78???
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So.Cal.Super · 07-26-2012, 11:01 AM

You want a Radiator that's going to fit your truck, so its by year of vehicle.

If you open the cap you can count the cores.

CEE1NG_RED · 07-26-2012, 11:52 AM

Quote:

Originally Posted by So.Cal.Super

You want a Radiator that's going to fit your truck, so its by year of vehicle.

If you open the cap you can count the cores.

Will a '78 350 motor and hose and lines fit with a '67 radiator?????
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GASoline71 · 07-28-2012, 01:42 AM

Quote:

Originally Posted by CEE1NG_RED

Will a '78 350 motor and hose and lines fit with a '67 radiator?????
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You can "make" it fit... but if it was me... I'd save up the cash for the correct radiator and hoses.

Gary

GASoline71 · 07-26-2012, 11:31 AM

That radiator looks like it's seen better days anyway.

If it were me... I would have the core rodded out and leaks fixed at a shop... or buy a whole new unit.

I don't like being stranded.

Gary

CEE1NG_RED · 07-26-2012, 11:53 AM

Quote:

Originally Posted by GASoline71

That radiator looks like it's seen better days anyway.

If it were me... I would have the core rodded out and leaks fixed at a shop... or buy a whole new unit.

I don't like being stranded.

Gary

Know of a good brand 3 core radiator that's all metal? If so LMK. ;(
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cdowns · 07-26-2012, 01:39 PM

been my experience that when u sstart patchin old radiators the next leak is right around the corner so now i just get a replacement

airdale94 · 07-27-2012, 08:38 PM

You might pm 67cst and see if he still has access to these.

http://67-72chevytrucks.com/vboard/s...d.php?t=250450

Sequoyah · 07-28-2012, 12:59 AM

This is a place that I have used for two radiators. They dip them, fix any leaks and paint them. It's cheaper than buying new and you're guaranteed a perfect fit. I figure there's at least one shop like this near everyone on this site....

http://www.independentradiator.com/index.php

oneperfectrun · 07-28-2012, 09:50 AM

The radiator in the pics looks like it has had an electric fan mounted to it at one time. The little square foam pads look like the pads for the nylon ties used for mounting. The ties have probably rubbed thru the core caused the leaks.
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07-25-2012, 09:43 PM	#1
CEE1NG_RED Registered User Join Date: Oct 2009 Location: LBC California Posts: 497	Pressure tested the radiator and two leaks from front and rear fins...SOLUTION? Any way to fix this without buying a new radiator? Pressurized the radiator to 16#s and the leaks are coming from two locations of the fins, front and rear. Any solutions? JB WELD?? Seems that the previous owner had also fixed some fins using I dont know what solution. I attached a pic of it, where it has some kind of square stamped glue substance on the fin area. Also, what's the difference with 1, 2, 3, 4 core radiators and how can you tell how many cores you have on the truck? If solution does not work, what radiators out there are still made of aluminum or metal rather than plastic and how many cores? Thanks again... Attached Images __________________ - 1967 Chevrolet C/10 SWB fleetside (New Project). - 1969 Chevrolet C/10 SWB fleetside (SOLD) - 2000 Ford Mustang 232 (DD) - 2003 Ford SVT Cobra "Terminator" 281 (Once in a blue moon driver/weekend driver)

07-25-2012, 09:59 PM	#2
doubleb's69 Registered User Join Date: Aug 2010 Location: Des Moines, IA Posts: 1,241	Re: Pressure tested the radiator and two leaks from front and rear fins...SOLUTION? Anything you do will probably fail not to far down the road, just my opinion. If your take you cap off you can count the rows of tubes thats how I have always determined how big it was. The 4 core in my 69 GMC had a leak in it and I bought a new all metal 4 core from O'Reilly's for $170. It dropped right in and has worked great for me. Otherwise check Craigslist for one. __________________ Bud

07-25-2012, 10:02 PM	#3
GRX Registered User Join Date: Jul 2010 Location: MD Posts: 1,937	Re: Pressure tested the radiator and two leaks from front and rear fins...SOLUTION? Media blast the area, clean well, apply flux, and solder. __________________ 1969 c-10 Step Side Long Bed. I-6 250cid = = 1969 Pontiac GTO hard top. 400, 4-speed.

07-25-2012, 11:11 PM	#4
airdale94 Registered User Join Date: Jan 2007 Location: Topeka,KS Posts: 778	Re: Pressure tested the radiator and two leaks from front and rear fins...SOLUTION? Just for clarification it's the tubes that are actually leaking. Like GRX said you can clean and solder. You can push (break away) the fins from the tubes to gain better access. Then solder with a torch, propane will do. That's what the old radiator shops did. It does look like that epoxy method worked also. Last edited by airdale94; 07-25-2012 at 11:13 PM. Reason: add

07-26-2012, 11:01 AM	#6
So.Cal.Super It'll Buff Out! Join Date: Apr 2007 Location: San Diego Posts: 603	Re: Pressure tested the radiator and two leaks from front and rear fins...SOLUTION? You want a Radiator that's going to fit your truck, so its by year of vehicle. If you open the cap you can count the cores. Attached Images __________________ "Instructions are just another mans opinion" Become a Supporting Member http://67-72chevytrucks.com/vboard/payments.php Man Card Rules http://67-72chevytrucks.com/vboard/s...d.php?t=634550 72 Chevy Cheyenne Super 400 LWB

07-26-2012, 01:39 PM	#11
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Pressure tested the radiator and two leaks from front and rear fins...SOLUTION? been my experience that when u sstart patchin old radiators the next leak is right around the corner so now i just get a replacement __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

07-27-2012, 08:38 PM	#12
airdale94 Registered User Join Date: Jan 2007 Location: Topeka,KS Posts: 778	Re: Pressure tested the radiator and two leaks from front and rear fins...SOLUTION? You might pm 67cst and see if he still has access to these. http://67-72chevytrucks.com/vboard/s...d.php?t=250450

07-28-2012, 12:59 AM	#13
Sequoyah so easy a caveman can do it... Join Date: May 2006 Location: Albuquerque, NM Posts: 419	Re: Pressure tested the radiator and two leaks from front and rear fins...SOLUTION? This is a place that I have used for two radiators. They dip them, fix any leaks and paint them. It's cheaper than buying new and you're guaranteed a perfect fit. I figure there's at least one shop like this near everyone on this site.... http://www.independentradiator.com/index.php __________________ My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=242380

07-28-2012, 09:50 AM	#14
oneperfectrun Registered User Join Date: Aug 2011 Location: Fulton, MS Posts: 87	Re: Pressure tested the radiator and two leaks from front and rear fins...SOLUTION? The radiator in the pics looks like it has had an electric fan mounted to it at one time. The little square foam pads look like the pads for the nylon ties used for mounting. The ties have probably rubbed thru the core caused the leaks. Posted via Mobile Device



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