Broke carb mounting screw

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MotorcyclesMan!

New Member
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Hey guys I broke my Chinagirls carb mounting screw. I tried extracting but the god damned extractor broke off and now I’m wondering can I just run the carb off the one remaining screw and hose clamp to the post to somewhat seal off the other end? Do I weld it to the engine or is there a sealant or something I can use. I’m using a carb offset on the setup.
 
Nope. Without that bolt in there, you'll have an air leak, which will destroy your motor from excess heat, and from running lean. There is no easy fix.
 
Thanks for the reply any ideas on what I can do or how to get the bolt out google isn’t much help as most places say your screwed if an extractors in there.
bairdco said:
Nope. Without that bolt in there, you'll have an air leak, which will destroy your motor from excess heat, and from running lean. There is no easy fix.
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Welcome,
Advise may be too late but this is what I would have tried.
If you could put a cutting disc on a dremel tool and cut a slot in the broken stud, you may be able to remove it with a screwdriver "IF" the stud is not broken too deep into the hole. You may still use this method - although be ready with some JB weld and a mild flat file to fill and re-surface the cylinder face.
I would fear an extractor/drill it out would cause irrepairable damage.
 
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MotorcyclesMan! said:
Hey guys I broke my Chinagirls carb mounting screw. I tried extracting but the god damned extractor broke off and now I’m wondering can I just run the carb off the one remaining screw and hose clamp to the post to somewhat seal off the other end? Do I weld it to the engine or is there a sealant or something I can use. I’m using a carb offset on the setup.
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That is the Intake mounting flange.

Easy Fix!!! LOL
Those small spiral extractors are fragile.

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if you plan on really riding go buy like 3 new cylinders and pistons, cause you gonna need it anyway, that cylinder just toss aside till you feel like extracting that hole.
 
I concur with both the dremel / screwdriver method & the weld a nut to it method... Try the dremel first!

Here's some videos to get you going... (use a small wire feed welder & don't let any debris or sparks go inside the intake port)!


 
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