 Rear trailing arm broken bolts, How in trouble am I?? |
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| PaIsa |
 Jan 7 2025, 06:19 PM
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#1
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Member  Group: Members Posts: 104 Joined: 13-June 24 From: Quebec, Canada Member No.: 28,180 Region Association: Canada  |
Long story short, 2 of the 3 bolts holding the left rear trailing arm broke on me. One broke and left some of the bolt out of the hole so I thought I could get it with heat and vise grip but nope. She is stuck. The other one broke and what is left is in the hole.
I cannot believe I am the first 914 owner dealing with this. As I said, for the bolt that left me something to work with my plan was to heat it and use vise grip to try to get it. Tried on multiple occasion but she does not want to come out. For the other one I guess I only have left to dril it out and try to redo the threads hoping for the best. Does anyone has any other advice or method to try. I do not have a welding machine so welding a nut is not an option for now and not sure it would work (for the one that sticks out of the hole). I am open for any advice. I plan to work on this with my son this weekend. Thanks   |
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| PaIsa |
Mar 5 2025, 04:16 PM
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Member Group: Members Posts: 104 Joined: 13-June 24 From: Quebec, Canada Member No.: 28,180 Region Association: Canada |
So following up on this.
Last week end, with the help of my son, we reinstalled most of what I took out of the car. When we installed the rear left trailing arm, the one with the 2 broken bolts on which we tapped 2 of the 3 bobbins for larger bolt, it became obvious that it would not give enough adjustment to properly align the wheel as pointed out by ChrisFoley. We had to try it! Our next move will be to drill through and use longer bolts. I will as well look at replacing the bobbins as a potential third option. I will make some measurement and prepare a drawing in order to get some bobbins machined. One question I would have is to know if someone can tell me how the bobbins are attached to the car frame (welding top and bottom, only top, only bottom??). Knowing how they are installed would help in knowing how to get them out.  |
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| Superhawk996 |
Mar 5 2025, 11:22 PM
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#3
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914 Guru Group: Members Posts: 6,814 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch 
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QUOTE(PaIsa @ Mar 5 2025, 06:16 PM)  One question I would have is to know if someone can tell me how the bobbins are attached to the car frame (welding top and bottom, only top, only bottom??). Knowing how they are installed would help in knowing how to get them out. QUOTE(Superhawk996 @ Jan 7 2025, 09:46 PM) Details in my build thread if you want a view to the internals of what you’re dealing with. Page 3, post #46. Link to my build in my signature. |
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Posts in this topic
PaIsa Rear trailing arm broken bolts Jan 7 2025, 06:19 PM
technicalninja Those bolts go all the way through the body and ha... Jan 7 2025, 06:39 PM technicalninja It's possible to catch the undercoat on fire, ... Jan 7 2025, 07:00 PM Superhawk996 You are so :miles: especially on those that broke... Jan 7 2025, 07:46 PM
JamesM
You are so :miles: especially on those that brok... Jan 7 2025, 08:29 PM Superhawk996
You are so :miles: especially on those that bro... Jan 7 2025, 08:37 PM mgp4591
You are so :miles: especially on those that bro... Mar 5 2025, 11:13 PM r_towle I remember @chris foley [b]@[url=http://www.914... Jan 7 2025, 08:28 PM PaIsa One thing that I am unsure of is the fact that the... Jan 8 2025, 06:02 AM 930cabman sorry, this is not an easy fix and has been mentio... Jan 8 2025, 11:54 AM ChrisFoley I successfully drilled out 3 of 6 on a car in my s... Jan 8 2025, 12:28 PM Superhawk996
I used to sell replacement sleeves.
What do you ... Jan 8 2025, 12:39 PM ChrisFoley
What do you mean - used to? :shock1:
The sm... Jan 8 2025, 01:59 PM 914werke
One thing that I am unsure of is the fact that th... Jan 8 2025, 12:33 PM PaIsa
One thing that I am unsure of is the fact that t... Jan 8 2025, 12:51 PM Superhawk996
Mine seem to be capped like 1/2 to 3/4'... Jan 8 2025, 01:37 PM ChrisFoley
[quote name='914werke' post='3185572' date='Jan 8... Jan 8 2025, 02:12 PM technicalninja I've got a 31K mile 75 that definitely had the... Jan 8 2025, 12:41 PM rudedude All three are open from above with the plastic cap... Jan 8 2025, 12:43 PM Ishley You might consider just getting the threaded bobbi... Jan 8 2025, 01:47 PM PaIsa So my son and I were able to deal with the buried ... Jan 10 2025, 06:46 PM Spoke I had the same thing happen to every one of my stu... Jan 10 2025, 07:43 PM rhodyguy Aerokroil is a first rate penetrant. Spray generou... Jan 10 2025, 08:06 PM Superhawk996
Drill bits, taps and thread chasers get expensive... Jan 10 2025, 08:08 PM technicalninja My left-handed cobalt's are my most prized dri... Jan 10 2025, 08:14 PM Ishley Check this post for some pictures.
http://www.91... Mar 5 2025, 08:34 PM peteyd We also have these available for left and right. I... Mar 7 2025, 08:02 AM 930cabman
We also have these available for left and right. ... Mar 7 2025, 04:11 PM PaIsa Replacement bobbins already delivered. Will work ... Mar 10 2025, 10:37 AM Ishley You might consider making some sort of a jig to re... Mar 11 2025, 09:15 PM |
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