Rounded off starter bolt

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Rounded off starter bolt

Post  sg86coupe on June 18th 2014, 9:45 pm

Upper bolt on starter on 5.0 mustang, motor in car, exhaust is off, bolt is crazy tight and a short head and rounded shoulders. Any ideals before I use a die grinder?

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Re: Rounded off starter bolt

Post  jasonf on June 18th 2014, 10:32 pm

Can you get to it with a hammer or hammer and punch? Sometimes just a few wacks can jar stuff loose. Also did you try to tighten it a bit first?
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Re: Rounded off starter bolt

Post  sg86coupe on June 18th 2014, 10:36 pm

No shoulders to get a hold of

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Re: Rounded off starter bolt

Post  Larry Williams on June 18th 2014, 11:09 pm

there are sockets with a left handed internal thread like the ones used for removing rounded wheel nuts. They come in different sizes.

or you can try metric sizes and pound it on


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Re: Rounded off starter bolt

Post  bbf-falcon on June 18th 2014, 11:11 pm

The bolt extracter set that Sears sells works great. Might try some heat .

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Re: Rounded off starter bolt

Post  sg86coupe on June 18th 2014, 11:52 pm

Thanks for the help

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Re: Rounded off starter bolt

Post  460bronco on June 19th 2014, 11:45 pm

Update
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Re: Rounded off starter bolt

Post  61coon on June 19th 2014, 11:51 pm

Try to drive a nut over the damaged bolt head and weld the inside of the nut to the bolt head. Let it cool for about 30 seconds and then try to back it out. That is if you have a mig welder handy.
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Re: Rounded off starter bolt

Post  sg86coupe on June 22nd 2014, 1:38 am

finally got mad enough and ground the head off. I will find bolts with a taller head to go back in.

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Re: Rounded off starter bolt

Post  Larry Williams on June 22nd 2014, 9:58 am

sg86coupe wrote:finally got mad enough and ground the head off. I will find bolts with a taller head to go back in.

use a stud and nut
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Re: Rounded off starter bolt

Post  bbf-falcon on June 22nd 2014, 11:45 am

X2

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Re: Rounded off starter bolt

Post  sg86coupe on June 22nd 2014, 6:32 pm

Had'nt thought of that, good ideal.

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Re: Rounded off starter bolt

Post  69F100 on June 22nd 2014, 6:44 pm

Lock tite the stud in the trans and dont over tighten the nut it will pull the treads out of the trans. I over tighten the one i put in my c6 and when my engine kicked back cause the battery was low it pulled out and broke the ear off my starter.
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