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What size thread for 4-pot caliper bolts ?

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Old 04 February 2004, 10:00 AM
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stu200
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Exclamation What size thread for 4-pot caliper bolts ?

Aaaaaaaaaaaarrrrrrrrrrrrggggggggggghhhhhhhhhhh!!

When changing the front discs last night, part of the thread in the caliper came out with the bolt as I undid it. I'd been cautious - Plusgas, gentle persuasion, etc.

Now, the bolt goes in finger tight but then fails to bite and goes loose again. Best option seems to be getting a Helicoil inserted into the caliper, but before I ask any locals if they can do it, I need to know what size thread I'm after.

Cheers,

Stu.
Old 04 February 2004, 10:11 AM
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AndrewC
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From memory it's either M12x1.5 or M12x1.25, but if you've got the bolt then you should be able to measure it.

Andrew...
Old 05 February 2004, 11:51 AM
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stu200
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Thanks Andrew. Couldn't find anyone locally that sounded even halfway confident, so it's gone to ProSport for fixing
Old 07 February 2004, 01:00 PM
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stu200
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Double bugger with a side serving of damn and blast

Two different engineers wouldn't touch it for a Helicoil, so it's needed a new caliper - and you don't want to know how much they are
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