Center cap screws snapped off inside wheel

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62'Brier
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Joined: Tue Nov 19, 2013 1:46 pm

Center cap screws snapped off inside wheel

Unread post by 62'Brier » Fri Nov 24, 2017 4:30 pm

Not Corvair specific but I dumbly tried taking off caps without spraying screws with penetrating fluid first and several snapped off with only little nubs left.
What's the best way to remove them or do I have to rebore and thread the holes? The holes are probably about 3 mm.
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Jerry Whitt
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Re: Center cap screws snapped off inside wheel

Unread post by Jerry Whitt » Fri Nov 24, 2017 7:13 pm

The best way involves some work.
1. Use the rust remover you forgot to use.
2. Use a Drimel grinder and make the top of each broken bolt absolutely flat.
3. Center punch each broken bolt.
4. Drill each broken bolt, starting with a very small drill. Then drill each bolt with the next size up. Repeat, several times as needed.
5. Obtain an "easy out" or other brand of broken bolt remover. Tap into the broken bolt, then remove the bolts.
6. If the bolts still wont come out, use the next size up drill again. Continue this process. Finally the pieces of the bolt will come out.
7. If needed, retap the hole to the next size larger screw.


Involves lots of work, but if you keep at it, will solve the problem. (I know from lots of experience!)
Jerry Whitt
ASE CERTIFIED MASTER TECHNICIAN
Retired
Hemet, Callifornia
65 Monza, purchased new
65 Corsa convertible

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terribleted
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Re: Center cap screws snapped off inside wheel

Unread post by terribleted » Fri Nov 24, 2017 7:43 pm

If you lose the threads you can also perhaps helicoil back to regular hole instead of going oversized.
Corvair guy since 1982. I have personally restored at least 20 Vairs, many of them restored ground up.
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62'Brier
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Re: Center cap screws snapped off inside wheel

Unread post by 62'Brier » Fri Nov 24, 2017 7:53 pm

Thanks you guys. I will keep at it.

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Kent1915
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Re: Center cap screws snapped off inside wheel

Unread post by Kent1915 » Sat Nov 25, 2017 6:26 am

terribleted wrote:If you lose the threads you can also perhaps helicoil back to regular hole instead of going oversized.
I second the helicoil. Not done it (knock wood) on my corvair but had to on my motorcycle.


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