SOHC.co.uk Forums > CB350/400

Snapped bolt, now what?

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ST1100:

--- Quote from: Skoti on July 01, 2025, 12:31:10 PM ---Correct alignment is essential to prevent the drill bit going off centre.
--- End quote ---
I usually use a punch to center the thin (2.5~3mm) pre-drilling... and apply a drop of drill/cut-coolant in the tip...
And I've gotten me a set of LHS drill-bits; works flawless, most of the time the heat and torque alone drive the stub out.

Athame57:

--- Quote from: exvalvesetdabbler on July 01, 2025, 02:55:49 PM ---
If someone put it in with red locktite the heat should break it's grip.

--- End quote ---
Definatley no red loctite there, most of the long bolt had already come out. Thanks for the link Dave.

Johnwebley:
Is any of the stud projecting??

I have seen them built up using electric welding,

With the heat cycles and penetrating fluid it should come out

Sent from my SM-A546E using Tapatalk

Athame57:

--- Quote from: Johnwebley on July 01, 2025, 03:51:33 PM ---Is any of the stud projecting??


--- End quote ---
No, nothing sticking out to get a hold of .  :(

McCabe-Thiele (Ted):
I had stripped threads on both my 500 forks where the top brake bracket fits plus a missaligned helicoil.
I took the bottom part of the forks to a local engineering firm, they fitted something they called a Slug or a Pig?
I had about 5 or 6 threads Helicoiled as well, it cost me £170 in total.

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