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Broken Bolt Which Attaches Rotor Cap to Dizzy

Posted: Mon Mar 07, 2016 8:01 pm
by prelude_h22
Hi All,

Just a quick question, one of the bolts heads which holds the dizzy cap on sheared off last weekend whilst doing some general maintenance. Needless to say i was quite annoyed.

The cap is still held securely by the other two bolts so the car can still be used if required.

Is the broken bolt easy to drill out with a standard drill?
Would it need re tapping?
Dont really want to buy a new dizzy -lol

Cheers guys

Posted: Mon Mar 07, 2016 8:22 pm
by GJMHONDA2012
If you take off the other good bolts holding dizzy on then I'm sure it would slide off the over the sheared bolt then u could just use a set of vice grips or something similar and remove the rest of the bolt, these bolts shouldn't be overly tight I would imagine as its only for holding the dizzy cap on I don't think it would need drilled out, is it just the bolt head that's sheared off???

Posted: Mon Mar 07, 2016 8:28 pm
by prelude_h22
Unfortunately when the bolt sheared it seemed that the rest of the bolt sheared inside the thread, so wont be reachable or grip able with a set of clamps.

I see what you mean, the bolts are aluminium so quite soft. Drilling out should be possible?
I would assume i would need to retap?

Posted: Mon Mar 07, 2016 8:42 pm
by GJMHONDA2012
prelude_h22 wrote:Unfortunately when the bolt sheared it seemed that the rest of the bolt sheared inside the thread, so wont be reachable or grip able with a set of clamps.

I see what you mean, the bolts are aluminium so quite soft. Drilling out should be possible?
I would assume i would need to retap?
Ah ryt ok fair enough I'm pretty sure it would be quite easy to drill out

Posted: Mon Mar 07, 2016 9:09 pm
by prelude_h22
Thanks GJMHONDA2012
Will try give it ago this weekend :)

Posted: Mon Mar 07, 2016 9:24 pm
by mercutio
just use a very fine drill and take it easy the work up to the next size up you may even be able to bring it out with the drill

Posted: Mon Mar 07, 2016 9:27 pm
by prelude_h22
Thanks for the advice mercutio.
Hope theres enough room there for my bosch drill

Posted: Mon Mar 07, 2016 9:27 pm
by mercutio
its only the bit that has to go in there :lol:

Posted: Mon Mar 07, 2016 9:33 pm
by prelude_h22
its only the bit that has to go in there :lol:
LOL. i mean the drill body on its side
I think the battery may need to be removed i think

Posted: Tue Mar 08, 2016 12:12 am
by wurlycorner
prelude_h22 wrote:
its only the bit that has to go in there :lol:
LOL. i mean the drill body on its side
I think the battery may need to be removed i think
Or mark the distributor position, unbolt and remove it from the engine so you can work on it on the bench - that will be the safest option imo. :? Are you sure the bolts are ally? I'd expect them to be steel, into the ally distributor body...