[Vwdiesel] Fw: broken head bolt

[James Hansen]

If you are going to drill, try to find a drill bit with left hand spirals.
Once the center of the bolt is removed by drilling the hole for the
easy-out, the drill bit which turns counter-clockwise in this case usually
just backs the bolt out.  I guess enough pressure gets relieved and the bolt
gets a little smaller.   I do this lots.
 You used a fairly new vice grip, whomped the bolt top a good one or two,
and squeezed the vice-grip (name brand, not taiwan cheapies for this job) on
so tight it broke a sweat, right?  You can usually turn with much more force
with a good vice grip compared to an easy out, so don't give up too easily.
Once you break an easy out off in the hole, it's uphill from there.  Any
friends that can weld?  If it was me, I would weld a nut on the stud first
before trying the drill method.  Potential for destruction is less with the
welder, and you can weld on a pretty good size nut to get good purchase-
just drop a close fitting washer over the broken head bolt first to keep any
weld boogers off the head sealing surface.  One disclaimer: you do need
someone who can weld reasonable well to do this, use lots of amperage.
-James

> -----Original Message-----
> From: vwdiesel-admin at vwfans.com [mailto:vwdiesel-admin at vwfans.com]On
> Behalf Of Holly
> Sent: Monday, October 07, 2002 6:18 PM
> To: vwdiesel at vwfans.com; vwpickups at neubayern.net
> Subject: [Vwdiesel] Fw: broken head bolt
>
>
> This is a multi-part message in MIME format.
> --
> [ Picked text/plain from multipart/alternative ]
> Hi all,
>
>    Thanks for all of your replies.  I am planning to replace the
> bolts they are the older 11mm types with 10 mm socket heads.  I
> have used your advice. Two days in a row I have heated up the
> bolt and surrounding area and applied parafin.   Tonight after
> heating for the third night in a row I used a pipe wrench and
> then a pair of vice grips and they both ended up sliding around
> the bolt.   So I went out and bought an easy out and 1/4 inch
> drill bit for it and tomorrow after my drill battery is charged
> up I will attack again.  This is my daughter baby which she calls
> "Rusty the Rabbit" so I am hoping I can get this done.  Thanks
> again for all of your help. I will let you know if ever get it out.
>
> Thanks
>
> Dave Newlin
> ----- Original Message -----
> From: Holly
> To: vwdiesel at vwfans.com ; vwpickups at neubayern.net
> Sent: Saturday, October 05, 2002 5:16 PM
> Subject: broken head bolt
>
>
> Hi all,
>
>       I was changing the head gasket on my daughters 82 VW Rabbit
> diesel and one of the head bolts snapped off leaving about 1/2 to
> 3/4 inches above the block.  I have heated it up and put
> penetrating oil on it and I am going to attempt to take it off
> tomorrow.  Any other suggestions out there.  Also, a couple of
> the other bolts came out with red powdery rust on the threads. Do
> you think those threads will hold the head bolt torque. I put oil
> down those threads and ran the bolts in and out of them a couple
> of times.  Thanks for any suggestions out there.
>
> Thanks
>
> Dave
> --
>
>
> _______________________________________________
> vwdiesel mailing list
> vwdiesel at vwfans.com
> http://www.audifans.com/mailman/listinfo/vwdiesel
> ---
> Incoming mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.384 / Virus Database: 216 - Release Date: 8/21/2002
>
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.384 / Virus Database: 216 - Release Date: 8/21/2002