threads stripped in carb

[Red9654]

i rebuilt my carb on my 1969 chrysler 45hp and the threads on the inside of the carb where u put the bolt on to hold the fuel bowl r stripping out. its tight enuf to tighten the fuel bowl the the carb but if u tighten it more than that it gets lose and it gets tighter and so on. if fuel leaks out of the bowl what can i do to stop it from leaking cuz i cant tighten it anymore???

 

[Frank Acampora]

Re: threads stripped in carb

Unfortunately there is not much you can do. You can dry everything well, and insert the brass bolt using Permatex red on the bolt and both sides of both gaskets and just snug it. Ultimately you will need to find another carb. You can use one off a Chrysler 35, 45, 50, or 55. The 35 will stunt performance a bit though.

 

[Red9654]

Re: threads stripped in carb

could i use helicoil or something similar?

 

[Frank Acampora]

Re: threads stripped in carb

No, that is a very fine thread, I don't believe an insert is made for it and there is not enough metal on the casting. Additionally, the bolt is such a length that it does not block the high speed jet.

 

[gm280]

Re: threads stripped in carb

There are lots of ways to fix your problem. It just depends on how mechanically inclined you are. IF (and that is a big IF) the stripped threaded area is only for tightening the fuel bowl on and doesn't have any through holes in it, you can always use some JB weld and re-tap it again. OR you can buy a tap of a slightly larger size and move up to the next size bolt. OR you can re-tap it with a larger tap and then thread and epoxy in a bolt and cut it off and drill out for the normal size (kind of like a heli-coil) or maybe even a little smaller size bolt. If it does have holes through it for maybe the high speed circuit, then you can coat the original bolt or threaded fastener with some oil and JB weld it into place without the carb bowl and once it cured, back out the fastener and install the bowl as usual... The JB weld will make new threads and the oil will allow the fastener to be removed...

 

[Red9654]

Re: threads stripped in carb

would permatex thread repair work?

 

[Red9654]

Re: threads stripped in carb

i the screw it=s tight and the fuel bulb doesnt really turn unless u try really hard to move it. will this b ok or should i still try for re thread this?

 

[maytheforcebewithus]

Re: threads stripped in carb

As Frank said there is not a lot of meat in that area for thread repair but these keenserts/keyserts come in all sizes and pitch metric and standard... Maybe just maybe you can get lucky with one of these thin walled inserts. Here is an instructional video.


https://www.google.com/url?sa=t&sou...nEanNdu9gSKLOhUHWuOWAyA&bvm=bv.48572450,d.dmg