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Front Clip Rust: [message #229082] Sat, 09 November 2013 20:50 Go to next message
noi is currently offline  noi   United States
Messages: 293
Registered: October 2010
Location: South of Fremont
Karma: 0
Senior Member
Greetings:

Well after posting my picture of the front clip rust I found, SteveS advised taking a real CLOSE look at the front clip rails – He also posted/linked pictures of the “surprise” he found after he got it back from being E-Coated:

http://www.gmcmhphotos.com/photos/front-subframe-repair/p44459-front-subframe-repair.html

So I picked up an inspection camera and took that closer look.

With no point of “reference” to decide just how much rust there was, I just used the frame rail seam as a “bench mark” – If I could see the seam clearly, would consider that area OK.

When looking down the driver side rail (from the front), the seam was clear and distinct all the way to where it started to “sweep” up.

Looking down the passenger side was a different story!

When I first started looking at what was “inside” the frame, I noticed that some critters had left a few acorns behind – No big deal, and just “shook/vacuumed” them out - When I got to about the center lateral support, I noticed what I thought were some more “acorns” – I lightly “jabbed” a couple with my camera lens and they moved easily, thus confirming my thought they were “acorns”:

http://www.gmcmhphotos.com/photos/front-clip-rust/p51476-rust-nodules1.html

As some of the others would not move, I thought they were just “imbedded” in the rust – So I took a long rod and started to “scrub” them out – While doing so, I noticed some rust falling from the frame – Odd I thought, as I did not remember any “holes” in the area – So DW and I flipped the frame over and I took a closer look – Humm, found a small hole near the cross member that wasn’t there before.

So taking a small punch, I started to see what was what – Whoah, just punched right through – Uh Oh… What does the rest of the area look like – Well here’s what it looked like!:

http://www.gmcmhphotos.com/photos/front-clip-rust/p51475-frame-holes.html

http://www.gmcmhphotos.com/photos/front-clip-rust/p51478-rust-out.html

http://www.gmcmhphotos.com/photos/front-clip-rust/p51480-seam-rust1.html

Bummers - Prior to scrubbing out the "acorns", the whole part of that area looked just like the part with no holes in it and it "rang" fine when tapped with a small hammer.

Then decided I would cut that area out and take a GOOD look:

http://www.gmcmhphotos.com/photos/front-clip-rust/p51474-cut-out.html

Unfortunately, I was not able to cut it out in one piece, but I was able to get out some large pieces – Here, you can see a section with what it looked like with the “acons” (rust nodules):

http://www.gmcmhphotos.com/photos/front-clip-rust/p51477-rust-nodules2.html

Same section and you can clearly see the thinning metal right down to where it was thin enough to just “punch through”:

http://www.gmcmhphotos.com/photos/front-clip-rust/p51479-rust-thinning.html

You can also see how the metal was thinned out on the seam overlap and the holes as a result (earlier picture):

http://www.gmcmhphotos.com/photos/front-clip-rust/p51481-seam-rust2.html

Anyway, just something you may, or may not, find interesting - I will post more pictures when I get more familiar with my inspection camera and/or better angles with my flashlight/inspection mirror!

Carl P.
76 Birchaven
South of Fremont
Re: Front Clip Rust: [message #229084 is a reply to message #229082] Sat, 09 November 2013 21:11 Go to previous message
midlf is currently offline  midlf   United States
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
Senior Member
noi wrote on Sat, 09 November 2013 20:50

Greetings:

Well after posting my picture of the front clip rust I found, SteveS advised taking a real CLOSE look at the front clip rails – He also posted/linked pictures of the “surprise” he found after he got it back from being E-Coated:

http://www.gmcmhphotos.com/photos/g6096-front-subframe-repair.html

Carl P.
76 Birchaven



I have only uploaded my frame pictures but have not yet posted any descriptions. If anyone has any questions on a specific picture please ask and I will explain it.


Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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