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What is the best way to extract broken studs from head at exhaust flanges? Thanks.
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DO NOT THINK about EZ Outs!!! Take a picture..got anything hanging out past the face of the hole??? If so, I weld a nut to the remaining stud and let it cool to harden the weld. Lots of penetrating oil and use a socket to carefully see if it will start turning out. if it budges a little, its more oil and work it in and out to loosen the corrosion and draw the oil in deeper. Be patient and work it back and forth.
Slip a bigger nut over the stud and weld from the stud center out to the nut.MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550
NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.
I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it. -
If little or nothing is protruding, get some left hand drill bits and drill a small pilot hole in the center as deep as you can, then progressively larger until the bolt come out. Don't go too deep, measure another hole for depth and mark your drill bit1978 GS 1000 (since new)
1979 GS 1000 (The Fridge, superbike replica project)
1978 GS 1000 (parts)
1981 GS 850 (anyone want a project?)
1981 GPZ 550 (backroad screamer)
1970 450 Mk IIID (THUMP!)
2007 DRz 400S
1999 ATK 490ES
1994 DR 350SESComment
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TurboJohn is now an expert.............
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Stop about 5 MM SHORT of the actual depth of the holes as the bolts also stop short. drill too deep or with a lot of pressure and you can easily drill into the head at the bottom of the hole and thats not good. Drill easy and "feel" for the drill bit to break thru and stop!!!MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550
NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.
I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.Comment
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on GS's they have/had bolts.
good luck...Comment
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I used a tiny pipe wrench on one, welded a blob to another stud and the pipe wrenched it, and drilled out the last of the 3 stuck studs. I couldnt get a nut to successfully weld to the studs. Definitely work ot back and forth gently and soak it like crazy with penetrant.
Which one[s] of the studs are stuck? Are they the in the middle by the frame rails or are they the ones closer to the outside of the motor. I had an easier time messing with the ones that were more outboard.Last edited by turbojonn; 12-06-2015, 03:43 AM.1981 GS 1100e turbo, 83 motor, turbo pistons, new head, new turbo, backed and welded clutch basket, Dyna S ignition, cbr 929 front end, gsxr 750 rear end with 190 tire, all carbon fiber covered bodywork.Comment
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