Frame crossmember rust issues. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

msgross · 11-30-2006, 08:53 AM

As you can see by the pictures my middle crossmember (correct name?) has a few rust issues. What's the best fix for this? Should I start hunting a replacement piece or weld some plates over the holes? yellow arrows are the only rust problems, blue circles are the rivets that hold the piece. thanks...

sleepyboy · 11-30-2006, 08:56 AM

I'd start looking in the boneyards..

*72CSTC5* · 11-30-2006, 10:07 AM

Drill it out, fabricate a plate to weld over the piece all the way to the edges and then reinstall with grade 8 bolts.

**raggedjim** · 11-30-2006, 12:49 PM

I'd bet that piece could fall out and you'd never know it! I agree, cut out the rust and patch it.

Rg

OLDCHEV4X4 · 11-30-2006, 01:13 PM

i would cut the rivets and remove it so you can get to the rust between the layers of metal. (between the frame and crossmember). And then patch and weld. I cut over 50 rivets off my 4x4 frame and replaced them with bolts.

msgross · 11-30-2006, 01:22 PM

I think i'll go that route. The piece is secured at the top and bottom so it is still doing its job. The problem with the boneyard is that everything has a bed on it, and i'm not crawling under one for this piece! thanks for the tips, hopefully this is my only structural problem, as you can see I have a bit if surface rust on the frame.

msgross · 12-30-2006, 09:07 AM

anyone have this part? only found on 4Wd frames I guess...

11-30-2006, 08:53 AM	#1
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Frame crossmember rust issues. As you can see by the pictures my middle crossmember (correct name?) has a few rust issues. What's the best fix for this? Should I start hunting a replacement piece or weld some plates over the holes? yellow arrows are the only rust problems, blue circles are the rivets that hold the piece. thanks... Attached Images

11-30-2006, 08:56 AM	#2
sleepyboy '69 Step Join Date: Mar 2005 Location: Marion, Texas Posts: 722	Re: Frame crossmember rust issues. I'd start looking in the boneyards..

11-30-2006, 10:07 AM	#3
72CSTC5 Account Suspended Join Date: Nov 2004 Location: Deer Park, Tx. Posts: 2,524	Re: Frame crossmember rust issues. Drill it out, fabricate a plate to weld over the piece all the way to the edges and then reinstall with grade 8 bolts.

11-30-2006, 12:49 PM	#4
raggedjim Senior Member Join Date: Jun 2002 Location: Murray, Kentucky Posts: 3,583	Re: Frame crossmember rust issues. I'd bet that piece could fall out and you'd never know it! I agree, cut out the rust and patch it. Rg __________________ Roger '68 Short step - https://67-72chevytrucks.com/vboard/...d.php?t=849675 '69 ('70?) 2wd Blazer '70 GMC Jimmy 2wd '73 Firebird - https://67-72chevytrucks.com/vboard/...d.php?t=853203

11-30-2006, 01:13 PM	#5
OLDCHEV4X4 Registered User Join Date: Apr 2000 Location: Chester County PA, USA Posts: 1,228	Re: Frame crossmember rust issues. i would cut the rivets and remove it so you can get to the rust between the layers of metal. (between the frame and crossmember). And then patch and weld. I cut over 50 rivets off my 4x4 frame and replaced them with bolts. __________________ 72 k/10 short wideside 72 k/5 Blazer 72 K/5 Blazer - obstacle course racer 72 custom/10 8' bed 70 K/5 Blazer 67 C-30 GMC Flat bed 86 GMC K2500 Plow Truck 85 GMC K3500 84 M1008 85 M1008 77 G30 Motor Home 72 Sears 12hp Tractor Glenmoore, Pennsylvania

11-30-2006, 01:22 PM	#6
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: Frame crossmember rust issues. I think i'll go that route. The piece is secured at the top and bottom so it is still doing its job. The problem with the boneyard is that everything has a bed on it, and i'm not crawling under one for this piece! thanks for the tips, hopefully this is my only structural problem, as you can see I have a bit if surface rust on the frame. Last edited by msgross; 11-30-2006 at 01:23 PM.

12-30-2006, 09:07 AM	#7
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: Frame crossmember rust issues. anyone have this part? only found on 4Wd frames I guess...

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