Calling all carby gurus what's this part called?

[Stacks]

Im having a mental blank here, what is this part called? https://www.aulro.com/afvb/images/imported/2013/09/1077.jpg

[loanrangie]

Not a great pic but is it the seat from a needle & seat ?

[Stacks]

https://www.aulro.com/afvb/images/imported/2013/09/1075.jpgHere's another pic, I thought it was to do with that but I was told no, it's not mine it's a work colleagues who came over and asked. Out of a sigma carby, but I think your right

[RIN03]

thats one of those thingamejigs that gos on the whatsamacallit

[d2dave]

What carby is it off and where does it go?

[shorty943]

Looks like one of the metering jets to me.

[Lotz-A-Landies]

It's a necklace from one of those urban techno tribes! :wasntme:

[Tank]

Does the end bit (top in photo) move up and down (springloaded), if it does it is a needle and seat.
The end bit is moved up and down by the float in the fuel bowl, cuts off the fuel delivery when float reaches certain height, Regards Frank.

[loanrangie]

Does the end bit (top in photo) move up and down (springloaded), if it does it is a needle and seat.
The end bit is moved up and down by the float in the fuel bowl, cuts off the fuel delivery when float reaches certain height, Regards Frank.

Thats what i was thinking, a fork on the float slots into the groove to lift it up/down.

[d2dave]

What puzzles me this. In the pic the thread at the bottom looks like the attachment for the fuel line. The top thread looks like where it would screw into the carby body.

The problem here is the hole in the side is external.

[Tank]

Could be right there, hole in the side didn't register, but it probably still is a float needle and seat, I would say that the thread at the bottom probably screws into the underside of the float bowl cover and seals on the taper.
Only other thing I can think of is a Power Valve (enrichment) which is operated by an external lever that presses on the end (top) bit, usually between idle circuit and accelerator pump, Regards Frank.

[POD]

Doesn't look much like a needle and seat, my first thought was power valve, don't know those particular carbies though. A power valve will be located in the bottom of the float chamber, has a light spring that holds it closed and it is operated by a plunger that is held away from the valve by vacuum, so at low vacuum, i.e. wide-open-throttle, the plunger is depressed by a spring, opens the valve and allows extra fuel flow. There will be a springt-loaded plunger or lever of some sort that rests on this when the top of the carby is fitted.

[Blknight.aus]

which carby is it....

It cant be a needle and seat for the float valve, the wire goes right the way though...

I think it might be a combnied jet and emulsion tube.

[Stacks]

The first thing I asked was what carby it was, but he had no idea. All I got was it's from a sigma motor and he needed the part because he over tightened it and it snapped. But he had no idea what it was lol, I had one look at it and had no idea it certainly was any holley part I've used. He just started doing sprint car racing and he had a race that evening. I recommended him take the carby and part to a performance shop I will ask on Monday if he figured it out.

[d@rk51d3]

Are there 2 of them?

If so, it looks a bit like the "inner venturi", or part thereof.

[Stacks]

Its a custom made carby built in Adelaide and the part listing was just "injector"!