Unknown material found - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cheford · 08-03-2008, 07:22 PM

Hi, I just completed sandblasting a frame from a 72 c10 and where the rear coil springs mount to the frame there is some rust through. I thought I could just build the few holes with some weld but what I thought was metal is not. Does anyone know what this filler material is between the frame and spring perch, a magnet will stick to it and it's very brittle. I've repaired the holes by welding a 1/8th thick plate over the spring perch but I'm now concerned about this filler material that is falling out, hope I'm making sense.

tobiahr · 08-06-2008, 02:07 PM

Permatex 25909 Liquid Metal Filler that meets all the description you gave. I found it online here

Amazon.com: Permatex 25909 Liquid Metal Filler,... but see it in my local autoparts store all the time usually wrapped part way around a penny hanging from a chain.

71swb4x4 · 08-06-2008, 10:23 PM

If it's between the spring perch and the frame my guess is that the "filler" is road dust - gravel, grit, sand, etc.

cheford · 08-07-2008, 07:45 PM

Quote:

Originally Posted by 71swb4x4

If it's between the spring perch and the frame my guess is that the "filler" is road dust - gravel, grit, sand, etc.

Yes there was gravel,grit and sand but this stuff is solid and can be picked up with a magnet, shatters if you hammer on it and explodes if you hit it with a mig welder. I found it between the halves of the trailing arms as well and it seems to have swelled up and pushed ( bulged ) the c channels between the rivets.

RunninLo · 08-07-2008, 10:02 PM

Sounds like some PO couldn't find his JB weld and jammed some permatex in as a "suitable" repair

Josh

08-03-2008, 07:22 PM	#1
cheford Registered User Join Date: Apr 2007 Location: ontario Posts: 247	Unknown material found Hi, I just completed sandblasting a frame from a 72 c10 and where the rear coil springs mount to the frame there is some rust through. I thought I could just build the few holes with some weld but what I thought was metal is not. Does anyone know what this filler material is between the frame and spring perch, a magnet will stick to it and it's very brittle. I've repaired the holes by welding a 1/8th thick plate over the spring perch but I'm now concerned about this filler material that is falling out, hope I'm making sense. Last edited by cheford; 08-03-2008 at 07:23 PM.

08-06-2008, 02:07 PM	#2
tobiahr Registered User Join Date: Nov 2007 Location: Lincoln NE Posts: 513	Re: Unknown material found Permatex 25909 Liquid Metal Filler that meets all the description you gave. I found it online here Amazon.com: Permatex 25909 Liquid Metal Filler,... but see it in my local autoparts store all the time usually wrapped part way around a penny hanging from a chain.

08-06-2008, 10:23 PM	#3
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: Unknown material found If it's between the spring perch and the frame my guess is that the "filler" is road dust - gravel, grit, sand, etc. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

08-07-2008, 10:02 PM	#5
RunninLo 3DrDwn--the 'burb not the band Join Date: Jan 2007 Location: missoula, mt Posts: 598	Re: Unknown material found Sounds like some PO couldn't find his JB weld and jammed some permatex in as a "suitable" repair Josh __________________ Slo and Lo that is the tempo. '72 burb build page here: http://67-72chevytrucks.com/vboard/s...d.php?t=259256 '89 GMC Dually crew build page coming soon. 88 4x4 crew DD duallys past/present pics here: http://67-72chevytrucks.com/vboard/s...46#post4001246 89 1 ton Dually rear flip kit install here: http://67-72chevytrucks.com/vboard/s...d.php?t=354327



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