carb fracture

[sastanley]

nyv,

There are a couple of options..you could try using a thread repair tool, which looks a little bit like a tap, and can sometimes re-thread them if they aren't too bad. This is not the same as a tap & die set, but similar. I found one at Sears...I think it was called a re-threading kit.

There is probably enough shoulder that you can afford to go up one size..drill out and re-tap to the next larger size. - I would wait and let someone like Dave Neptune chime in..he's the carb guru around here.

Of course a more costly option would be a replacement carb from Moyer.

One of the 'upgrades' that came along with my Indigo PCV kit was studs to go in the carb flange instead of bolting it..once you solve your initial problem, this may help avoid stripping in the future, or stripping the still good side.

I've changed quite a few things from bolts over to studs after learning of the benefits (a stud pulls on the threads differently than a tightening/twisting bolt), including my exhaust flange, and water jacket side plate..the next time I take apart the valve cover, that will be next.

[JOHN COOKSON]

One thing I do is to be sure threads are super clean so I can finger tighten nuts or bolts almost all the way then use a wrench for the last turn or so. This of course assumes decent access.

TRUE GRIT

[nyvoyager]

definetly an "access" issue of sorts.
tried to run a longer bolt thru it with a nut on the end...no room.
i'll look at it again to see if i can go up a size and rethread.

thanks

[ArtJ]

A possible concern. IF the carb threads are retapped there is the possibility
of vibration causing a leak or worse a fracture. I would be extremely
careful.

Best Regards

Art

[nyvoyager]

yes agree with your concern.
i'm inclined to just replace this 37yo carb
thanks

[JOHN COOKSON]

I Don't Remember Metric Sizes........

Or what size bolts hold the carb to the manifold.
But anyway, any chance of using a metric tap and a metric bolt without enlarging the hole too much?

TRUE GRIT

[Blue Eyes]

Locktite

Please advise whether Locktite Red or Locktite Blue or nothing should be used to hold the 1/8 inch X 6 inch tube to the engine block.
aloha

[Mo]

I wouldn`t use locktight....I would think that should be pipe thread and it will self seal as it is tightened. That said, I`ve not had one of those apart there so please defer to some other points of view as you feel necessary. Locktight should not be necessary at all. One may use some pipe thread goop. Personal experience with pipe thread is that if tight they won`t leak....the thread design is to prevent leaks.

[ndutton]

Is there a need or preference to keep the 6" nipple as opposed to using a pipe plug as others suggested over on the "Cooling Water Drain Tube" thread?

I would avoid Loctite of any sort. My choice for this application, nipple or plug, is Permatex #2.