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09-17-2009, 11:09 PM
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#1 |
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Registered User
Join Date: Feb 2009
Location: Wausau, WI
Posts: 975
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U bolts
what is the best way to remove rusty siezed up u bolts
I'm almost done taking my rearend apart besides for these stubern ubolts My impact doesn't have enough balls to even turn the nuts. Any replies are appreciated.
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Smoking Tires Since 1992 1969 c10 AKA SIN 1985 SSWB TRAZER (super short wheel base) Last edited by threeonthetree; 09-17-2009 at 11:10 PM. Reason: Wrong word |
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09-17-2009, 11:18 PM
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#2 |
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Well, Whoop-dee-do!
 
Join Date: Mar 2003
Location: Easton, Mo. pop.- me & scarcely a few others
Posts: 2,302
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Re: U bolts
my first choice is to blow them off with a torch, but if you don't have one a cutoff wheel in an angle grinder works OK. Slow, but OK. I've done it before. Be careful of kickback and be prepared for things to jump with a bang when the bolt separates and releases tension though.
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'68 GMC shortbox 4x4 350/SM465/T221- bought it in '83 SOLD  '72 K20 500 Cad/TH400/NP205 SOLD '92 Chevy 2500 6.5 mech TD 4L80E crusty daily driver '72 Monte Carlo... sweet low mile toy '11 Dodge Challenger IE 392 6spd... midlife car 
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09-17-2009, 11:20 PM
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#3 |
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Registered User
Join Date: May 2006
Location: Jonesboro, AR
Posts: 916
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Re: U bolts
I just did mine...or undid.
 Had to get a cheater bar on an 18" breaker bar to make it a 30". I thought I was going to snap the breaker bar. Both feet on the pumpkin and about a 350lb deadlift AFTER soaking in PB blaster and torching with MAPP gas and they finally broke free. Then the fight was on. They were rusted solid in the trailing arms. Get out the BFH. |
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09-18-2009, 12:31 AM
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#4 |
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20' Daredevil (Ret)
Join Date: May 2003
Location: Jefferson State
Posts: 13,722
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Re: U bolts
Did mine several years ago. Soaked 'em with penetrating fluid, then used a big cheater pipe.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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09-18-2009, 12:32 AM
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#5 |
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Registered User
Join Date: Jul 2007
Location: Salina, Kansas
Posts: 1,998
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Re: U bolts
cut them off... die grinder or something just before u go all the way through stop so u dont go in the rear end.. and take a hammer to it... it worked great on my friends 95 chevy
__________________
1972 C-10...402/400..flowmaster 40 series 1967 Mustang 347 stroker/C-4 1966 Mustang 289/3-speed 2013 Mustang V6/6speed w/300 ponies I may be 23, but i sure do knows 67-72s are sexy! Its not MPG its smiles per gallon! build started 11/25/08 build thread: http://67-72chevytrucks.com/vboard/s....php?p=2993796 |
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09-18-2009, 01:05 AM
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#6 |
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70 Chevrolet=Obsession
Join Date: Jun 2009
Location: nice ca
Posts: 1,067
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Re: U bolts
Nutcracker?
__________________
 I'm Just like my truck. Old, Ugly and Grouchy. Except my truck starts easily in the morning and doesn't smoke! IT'S NOT EASY BEING GREEN! -Kermit the frog 1970 Chevrolet C-10 Longbed Stepside : 350, Muncie M20, 3.08 GM corp. positraction Forest green exterior/light green interior(Where all my money goes) 1996 Toyota Corolla (Parts runner) |
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09-18-2009, 02:31 AM
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#7 |
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Registered User
Join Date: Feb 2005
Location: Carl Junction, Missouri
Posts: 2,061
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Re: U bolts
i took the nuts off, threaded them on barely and drove for days and the u bolts stayed rusted to the axle, still sticking out the trailing arms like i never touched them. beat the crap out of everything with all i had. still couldn't get the u bolts backed out the slightest bit.
then i got the idea i'll work around it and put the nuts back on. |
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09-18-2009, 02:43 AM
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#8 |
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Moderator
 
Join Date: May 2007
Location: Southern Cal
Posts: 20,031
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Re: U bolts
PB Blaster, a torch, and a cheater bar.
__________________
1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul |
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09-18-2009, 07:12 AM
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#9 |
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Registered User
Join Date: Mar 2003
Location: Cheboygan, MI
Posts: 998
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Re: U bolts
If you need or want to save them, soak with PB, use a cheater to try to slightly tighten them, then remove them. Some physics major could tell you why this works. It eludes me, but it does usually work...
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Tony Johnson -- '71 Blazer w/L-31 Vortec 350, SM465, NP205, performer intake, edelbrock 1406, HEI, 4" lift, Boyd EFI tank, Vintage A/C My Blazer -- |
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09-18-2009, 07:52 AM
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#10 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: U bolts
i just cut them with a buzz wheel and use BFH to drive them down and out of the trailing arms// cheap enough to replace to not warrent reusing 40yo rusty stuff
__________________
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 |
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