Author Topic: Don't think that's a stripped helicoil  (Read 261 times)

Offline billdn

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Don't think that's a stripped helicoil
« on: June 11, 2022, 05:54:20 PM »
Further to my last post on stripped helicoils. I now don't think it is the case.
In the attached picture the "material " on the left is what was attached to bolt thread when I removed it  next to it is a new m6 helicoil for comparison.
1) the piece on left is not magnetis, ie not metal like a helicoil
2) Appears finer material than a helicoil.
3) If I offer up the bolt to the hole it still screws in 🤔 although not torqued up as not on the engine.
Any ideas and no I didn't over tighten it when I put it in.
Is it possible to pull out the thread from alloy or something else going wrong 🤔

Online McCabe-Thiele (Ted)

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Re: Don't think that's a stripped helicoil
« Reply #1 on: June 11, 2022, 06:05:08 PM »
Looks like a completely stripped thread has come out - i have had similar decades ago.
Honda CB400 four super sport

Offline Nurse Julie

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Re: Don't think that's a stripped helicoil
« Reply #2 on: June 11, 2022, 09:11:27 PM »
Yes, that is the original thread. Another part that strips that gives the same result is the carb float bowl screw holes where they screw into the main body of the carb, they often come out in 1 whole coil. It's just old, fragile alloy.
« Last Edit: June 11, 2022, 09:14:13 PM by Nurse Julie »
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline Bryanj

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Re: Don't think that's a stripped helicoil
« Reply #3 on: June 11, 2022, 09:52:01 PM »
Yup, you can helicoil that, just make sure you get one long enough

Offline billdn

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Re: Don't think that's a stripped helicoil
« Reply #4 on: June 12, 2022, 07:40:42 AM »
Cheers all! At least it's not ripped out helicoil.

 

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