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 big "oops"... rounded-off bolt
#463391
06/13/04 04:17 AM
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Joined: Dec 2003
Posts: 69
OP
Getting the Wheeling Fever
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Does anyone have any suggestions on how to extract a rounded-off exhaust manifold bolt? Any help would be appreciated
My '86 4Runner went to the bone-yard November 29, 2004 at 10am after roughly 430,000 miles on the original engine and transmission. :-( Looking for something else to wheel in...
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Re: big "oops"... rounded-off bolt
[Re: ecowheeler]
#463392
06/13/04 04:31 AM
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Joined: May 2002
Posts: 761
Rock Warrior
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Weld a nut to the head of the bolt, grind two opposite sides flat and use vise-grips on it... there a a couple of methods. The tricky thing isn't that you can't get it out, it's that you can't get TO most of them to get fancy... <img src="/forums/images/graemlins/frown.gif" alt="" />
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Re: big "oops"... rounded-off bolt
[Re: TNToy]
#463393
06/13/04 07:06 AM
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Anonymous
Unregistered
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Not trying to divert from your problem, and not assuming you didn't try already, but
Next time you face removing rusted hex bolts/nuts use a quality 6 point socket. It's less likely they will round off the head flats.
Is the manifold still attached? Or is this a stud you are trying to remove from the head with the manifold already off?
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Re: big "oops"... rounded-off bolt
#463394
06/13/04 07:27 AM
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Joined: Aug 2002
Posts: 2,101
Body Damage is Cool
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i think i got lucky when i did my exhaust manifold. when i tore off the heat shield, there were only 2 studs still in there <img src="/forums/images/graemlins/shiner.gif" alt="" />
vise grips work pretty well, just clamp them TIGHT
'79 sport 4x4 longbed <img src="/forums/images/graemlins/smile.gif" alt="" />
20/22R hybrid with EB's OS valves, 268c cam, offy intake, weber 32/36, thorley header, 5 speed swap, 34" LTBs, downey 3" springs, marlin hysteer, 4.88s and locked
'91 4x4 shortbed
22R-E, W56, the dd!
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Re: big "oops"... rounded-off bolt
[Re: ecowheeler]
#463395
06/13/04 08:33 AM
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Joined: May 2001
Posts: 6,768
Trail Leader
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Also, use an extremely liberal amount of WD-40 or some kind of rust breaker fluid. It will definatley help.
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Re: big "oops"... rounded-off bolt
[Re: Brian894X4]
#463396
06/13/04 08:43 AM
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Joined: Mar 2004
Posts: 656
Rock Warrior
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Heat it with a torch....even a propane torch will work if you hold the flame there long enough.
Metal expand when you heat it (obvioulsy). So heat the nut and not the bolt....works like a charm every time.
Be carefull not to light anything on fire though.
'93 4Runner - 3.4L 5VZ-FE, 2" body lift, on-board-air system, custom gauge cluster, rear e-locker, electric fan, custom built front and rear bumpers, sliders, 4,88 gears...all on 33x12.5's.
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Re: big "oops"... rounded-off bolt
[Re: ecowheeler]
#463397
06/15/04 01:03 AM
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Joined: Apr 2004
Posts: 12
Need a Spot
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These bolt extractors worked great for me: www.irwin.com
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 Re: big "oops"... rounded-off bolt
[Re: Brian894X4]
#463398
06/15/04 01:47 AM
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Joined: Jul 2003
Posts: 274
Mudrunner
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PB Blaster works for me!
-Chris
'88 EFI Xtracab, 32 x 11.50 Buckshots, AZ bed, Turbo drivetrain.
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Re: big "oops"... rounded-off bolt
[Re: Myota]
#463399
06/15/04 02:47 AM
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Joined: Dec 2003
Posts: 69
OP
Getting the Wheeling Fever
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thanks for all the tips... PB catalyst and a 6 point(rather than a 12 point) socket did the trick
My '86 4Runner went to the bone-yard November 29, 2004 at 10am after roughly 430,000 miles on the original engine and transmission. :-( Looking for something else to wheel in...
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