Sheared a bolt when fitting new sump.. issue?

Sheared a bolt when fitting new sump.. issue?

Author
Discussion

superhans88

Original Poster:

180 posts

175 months

Friday 14th July 2017
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Had to fit a new sump today and accidentally sheared the head off 1 of 17 bolts securing it.. and cross threaded another!

Used some of that fancy RTV gasket maker so was hoping it would be ok having 15 of 17 in place (the two missing are not next to each other), I assume there must be a little redundancy built into the design?

That's what I'm hoping anyway!

Cold

15,247 posts

90 months

Friday 14th July 2017
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Your driveway will soon let you know if it's a problem. (It probably will be. frown)

996TT02

3,308 posts

140 months

Friday 14th July 2017
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You will probably be fine but removing the sheared one should not be too difficult - once the head comes off there is no tension on the threads sometimes even pointed pliers work. But hey you are a bit of a heavy hand are you not...

gazza285

9,810 posts

208 months

Friday 14th July 2017
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Clean up the cross threaded one and remove the sheered one. It wouldn't take someone who is competent long to do, but I'm not sure you are that person.

jeremyh1

1,358 posts

127 months

Saturday 15th July 2017
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Drill a hole in the thread and remove the stud with a stud removal tool
You might as well do it properly at this point
Replace any damaged bolts

kev b

2,715 posts

166 months

Saturday 15th July 2017
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Does it sound like the OP is going to be able to drill out a snapped fastener when he has already destroyed two just trying to fit them?

I think not, step away from the tools, let someone competent sort it out.

steveo3002

10,525 posts

174 months

Saturday 15th July 2017
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imo it will need sorting , they dont tend to fit a few extra bolts just incase someone wrecks a few

the snapped one should wind out now the head is missing , cross threaded one either clean it up with a tap or fit a thread insert

after doing stupid things like that myself , you soon learn to be a bit more carefull in the first place

E-bmw

9,219 posts

152 months

Saturday 15th July 2017
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Sorry to sound horrid, but if you can't tell you have a bolt cross threaded or can't torque a bolt to the correct torque, or have the ability/tools to recover from either, then maybe you should leave the spannering to someone else.

Sheepshanks

32,756 posts

119 months

Saturday 15th July 2017
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jeremyh1 said:
Drill a hole in the thread and remove the stud with a stud removal tool
Well, an easy out. Might be tough to get at it to drill.


Harsh crowd though

Is the block ally?

jeremyh1

1,358 posts

127 months

Saturday 15th July 2017
quotequote all
Sheepshanks said:
Well, an easy out. Might be tough to get at it to drill.


Harsh crowd though

Is the block ally?
!!!!!!!!!!! !!!!!!!!!!!!

Its a simple job anybody can sort it out

This the reason why I dont post much here

If you know so much about cars why cant anybody actually fix them on this site

At least the OP is having a go at it

Sheepshanks

32,756 posts

119 months

Saturday 15th July 2017
quotequote all
jeremyh1 said:
!!!!!!!!!!! !!!!!!!!!!!!
confused What did I say that caused that outburst?

jeremyh1

1,358 posts

127 months

Saturday 15th July 2017
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Not really aimed at you sheep just this site
This is my problem
This site is full of people of opinion people post twice every minute on the main site thinking they know it all They think they know everything
Here on the mechanics site you get 3 titles a day
Its disgusting, its terrible how can a site be jammed packed with people that claim to know about cars but the truth is they dont know anything ! They dont even know how to repair them
At least the bodgers on here are having ago and in my book thats makes them proper car people

Edited by jeremyh1 on Saturday 15th July 15:52

lucido grigio

44,044 posts

163 months

Saturday 15th July 2017
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Calm down fella.

gareth_r

5,726 posts

237 months

Saturday 15th July 2017
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jeremyh1 said:
!!!!!!!!!!! !!!!!!!!!!!!

It's a simple job, anybody can sort it out. This the reason why I don't post much here. If you know so much about cars why can't anybody actually fix them on this site? At least the OP is having a go at it.
Or, more likely, we've done something similar in the past, our attempts at resolving the problem just made things worse, and we're trying to pass on our hard-won wisdom. smile

I'd say practise your stud removal/thread insert installation/thread chasing on something less vital and easier to access, and let the professionals sort it (unless a punch and hammer moves the broken one and a carefully wielded tap fixes the cross-threaded one - anything else, especially if it involves drilling holes, has the potential to make the situation worse).

StoatInACoat

1,354 posts

185 months

Tuesday 18th July 2017
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Odd thread!

I'd helicoil the knackered thread because I've learned how to do it and find it quite fun and attempt to get the snapped bit out WITHOUT using an extractor first of all if you can with stilsons, grips and what have you.

IF the block isn't ally a good centre punch, lots of drill bits going up from tiddly to whatever the bolt is (M6 probably) will remove what's left of the bolt surprisingly quickly and easily if you have a good drill and keep it dead straight! I use a constant flow of WD40 to lube the drill bits because it's cheap and I always seem to have loads of it but that's going to be fun under the car with swarf and lubricant falling on you face. get a helper to spray while you drill and get the car as high as you can. I'd personally leave the sump on if it was mine.

I have no idea if the above will work or is the accepted way of doing it it's just what I would do! I would try and get a proper sump gasket if one exists for your car too, RTV is horrible stuff if it blobs out into the sump or gets on the pickup etc.

Edited by StoatInACoat on Tuesday 18th July 10:36