FAQ FAQ  Forum Search   Events   Register Register  Login Login

NEW METHOD TO REMOVE BROKEN HEADBOLTS

Post Options Post Options   Likes (1) Likes(1)   Quote Mr Moritz Quote  Post ReplyReply Direct Link To This Post Topic: NEW METHOD TO REMOVE BROKEN HEADBOLTS
    Posted: 11 Jun 2021 at 4:47pm
Mr Moritz View Drop Down
Platinum
Platinum
Avatar

Joined: 22 Apr 2008
Location: Brockenwood
Status: Offline
Points: 2496
https://www.youtube.com/watch?v=-8N0y0jVAng ;

Saw this method of removing broken headbolts. Might be handy when working on old outboards.. Needs a MIG welder though..
Back to Top
Post Options Post Options   Likes (0) Likes(0)   Quote MacSkipper Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jun 2021 at 5:23pm
MacSkipper View Drop Down
Titanium
Titanium
Avatar

Joined: 04 Jul 2014
Location: Manukau Harbour
Status: Offline
Points: 4330
makes it look easy - I dont have a MIG though.
Good fishing trip nothing breaks, great trip catch fish.
Back to Top
Post Options Post Options   Likes (0) Likes(0)   Quote Alan L Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jun 2021 at 6:38pm
Alan L View Drop Down
Titanium
Titanium


Joined: 21 Nov 2012
Location: Hastings
Status: Online
Points: 3949
I don't see why you need a MIG. Arc should do as well - small rod, slowly build it up. Have done similar with arc before.
There is another way too - spark erosion - but not for home w/shop.  But does good job in tricky spots.
Alan
Legasea Legend member
Back to Top
Post Options Post Options   Likes (0) Likes(0)   Quote Steps Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jun 2021 at 9:24am
Steps View Drop Down
Titanium
Titanium


Joined: 14 Oct 2013
Location: Sth Auckland
Status: Offline
Points: 11365
Thats old school...nothing new, just maybe 'lost skills' (??)
Thu tacking the screw driver like that the weld will snap.
We would build up little higher, take a bolt , abiout 1/2" long, taper the end into a V  Then weld that to the stack.

Also very important to soak it for a good 24 hrs if snapped due to corrosion

The 2nd part.. cast iron exhaust manfolds, snapped studs.
We used to again use a bolt as above.... never thought to use a nut like that.
 Never done it or tried with arc.
Done 2nd also with tig which is far easier ... and reliable not to snap
Back to Top
Post Options Post Options   Likes (0) Likes(0)   Quote Alan L Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jun 2021 at 3:17pm
Alan L View Drop Down
Titanium
Titanium


Joined: 21 Nov 2012
Location: Hastings
Status: Online
Points: 3949
There are one or two U tube postings on that theme - each guy has a slightly different take on it - but same principle. It really is the heat that does the job - gets the heat down the block on to the threads - which is hard to do otherwise.
Mig is probably the smarter course for small stuff like that - harder to control the heat on arc. But not impossible if that is all you have.
I had one job I was afraid to tackle - on an expensive Al head. Gave it to a local specialised auto machine shop and they did a good job using spark erosion.
U tube has lots of handy w/shop tips - which like Steps said - are probably never new - just forgotten or not discovered (by you).  Some rainy day it is worth poking around on them. The trick is to remember them when you need them - getting harder every day.
Alan
Legasea Legend member
Back to Top
Post Options Post Options   Likes (0) Likes(0)   Quote Fish 4T Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jun 2021 at 11:12am
Fish 4T View Drop Down
Silver
Silver


Joined: 25 Jan 2014
Location: North Shore
Status: Offline
Points: 424
What a beautiful machine, 200A AC/DC Mig, Arc and its Miller.



Back to Top
Forum Jump
Forum Permissions View Drop Down


This page was generated in 0.164 seconds.