Topic: 657A carburator slide key ?? nylon part ??

[willbird]

I got a rack of carbs where somebody sheared this nylon key off, appears to press into a hole in the carb body. I have a couple junk carb bodies, can this be driven out of one of those and driven into this body ? Or is it avail as a new part somewhere ??

[Don R]

 I have never tried but if that one is past being usable, pressing it out might give the answer. I always assumed those were metal.

[willbird]

I have never tried but if that one is past being usable, pressing it out might give the answer. I always assumed those were metal.

Well sunlight shines through this one :-).

Bill

[willbird]

Ok so I drove one out of a junk carb body. Looks as if what we see on the outside was actually used as a sprue hole to inject plastic in and form the key, they probably had a mold slid into the carb body while doing this. The sprue hole is tapered getting larger on the outside. I was able to tap the existing key a bit deeper so it functions again by using a .08" diameter drive punch :-). With something rare IMHO one could make a brass threaded device that may work, mill a male key into the end of it. This looks as if it will work though :-).




Bill

[BenelliSEI]

Interesting. I always assumed they were metal too. With your machining skills you should be able to make something up? Delrin?

[seanbarney41]

+1 on thinking they were metal...still learnin stuff here is cool

[willbird]

Interesting. I always assumed they were metal too. With your machining skills you should be able to make something up? Delrin?

Well the issue is that the sprue hole connects to a slot by the look of it, if a part was machined up it would have to thumb press in and then be glued in maybe ?? The part really is  not heavily stressed until somebody tries to twist a stuck slide as I am presuming the PO of this carb did. I noticed the slide was rotated a bit right away and thought "Oh that is not good" LOL. It does not move easily so it should be fine as is IMHO to give the carbs a try once they are cleaned up I think.