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stripped threads in engine for exhaust

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Siloxious:
Hello


Just now, an inner thread of the exhaust stud whole in the engine has snapped. I can move the exhaust stud freely in this hole. This sucks...

My idea was to tap a new M8 thread in the engine and try to fasten the exhaust pipe with a M8 bolt.

Does anyone have any experience with this? Do you think this would be a good idea or do you have alternatives? I already used loctite but it didn't work...


Thanks in advance!

Trigger:
You put a time sert in to do a thread repair or helicoil it   ;)

McCabe-Thiele (Ted):
The Helicoil will also return it to a M6 thread as well if you are not aware.

deltarider:
Time sert is the best option in my experience. You could also use oversize (7mm?) ones from Hondafour.nl, but I can't find them right now on the website. You may want to contact them. https://honda4parts.nl/index.php?language=en&ceid=aa606bade50a51044ab8e895fe2bc3cd

SumpMagnet:
For an area of high heat like an exhaust port, I'd go Timesert over Helicoil.

I have had helicoils 'unwind' themselves due to the differential expansion comared to the alloy head. More hassle than a Helicoil....but worth it in the long run

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