Last weekend I noticed on the front corner of my '5200' carb (2.3L, 2 barrel, looks like a 5200) there's an open, square fitting, with a hole in the middle. I also noticed that it doesn't appear on the diagrams of 5200s in my chiltons. Other than the mystery square fitting, the carb looks like a 5200 as diagrammed.
Does anyone know what the fitting would be for?
Could you post a picture of it?
Unfortunately, I don't have a working camera right now.
But the fitting in question is square, comes out the front left corner of the carb, has a hole in the center of it (looks like a vent or tube that goes into the carb), and four smaller holes on each corner of the fitting, I guess for something to be attached to it.
Does anyone know what a 6200 carb looks like?
Are the corner holes of this "fitting" you're talking about threaded or smooth?
If they ARE smooth, the base casting on your particular carb. was probably also used for other applications that year of manufacture and something was then mounted using those holes to secure it to the casting. It could possibly be for almost anything, either something not related to the carbs' operation, OR for something related, such as a sensor or maybe a solenoid, to open and close a fuel or air passage, to fine tune one of the carb's various circuits for changing conditions.
The 5200 carb, if I remember correctly, was/is a Weber design, licensed by Holley and used by Ford for this application. It was also used by other automakers under license. I've heard of this particular Weber also being used to replace the OEM carb. on other vehicles, one of which is a Nissan 720 series pick up truck with the Z24 engine, a 2.4L OHC engine.
Is it a working carb? The first thing that comes to mind is the place that the accelerator pump bolts on. Or possibly a deceleration valve? Im not sure about that one though.
QuoteAre the corner holes of this "fitting" you're talking about threaded or smooth?
I think they're smooth holes.
Quote from: dirt track demon on June 03, 2006, 10:55:02 PM
Is it a working carb? The first thing that comes to mind is the place that the accelerator pump bolts on. Or possibly a deceleration valve? Im not sure about that one though.
it's a working carb, been on the car for maybe 10 years.
the fitting's not the accelerator pump, mine's got one near the bottom of the carb. Looks similar, though -- square with the four holes on the corners.....
What year car is this on? Is it possibly a vent valve as later applications had that as part of the smog equipment. A photo would be very helpful in this case!
79. I took another look at it tonight, it's not a square fitting, it's more triangular in shape. I can't tell if the little holes are threaded or not.
Took another look at the chiltons and they mention another carb was used, a 6500, as well as the 5200, and I've also read about a 6200 on the internet. Both other carbs apparently had other devices attached to them, solenoids or something. Maybe the casting had several uses.
Yeah, I wish I could take a pic of it, but..........
anything look like it on this picture?
Any help?? This is from 2.0
nice pics
the fitting in question doesn't look like any of the ones on that carb.
the difference may be because my engine's a 2.3
which one of his pictures would show the fitting if it was on there?
Quote from: dirt track demon on June 25, 2006, 12:21:18 PM
which one of his pictures would show the fitting if it was on there?
the top one
the mystery fitting would be above the accelerator pump (where the vac hose fitting is, on his carb, in the top picture).
The fitting on the top photo above the accel pump appears that it would be for gas vapor emissions. Maybe it is possible the fitting on yours provides the same function, but is connected in a different manner. Again, without a photo of the actual carb, this is all a bit of a guessing game.
If it has a tube it would be a vapor recovery port,later emission carbs would have this.Also I believe the 6200 was a weird CV carb,completely different.
Quote from: renton481 on June 29, 2006, 05:09:34 AM
the top one
the mystery fitting would be above the accelerator pump (where the vac hose fitting is, on his carb, in the top picture).
Hello renton481,
The NIPPLE just above the accelerator pump diaphram goes to the "DE-CELL" valve.
IF your Pinto does not have the valve just block it off.
from Pintony
thanks guys
Pintony,
My car doesn't have a decel valve, so maybe that's what the fitting was for. It sort of sticks up at an angle.
The carb was put in by a shop eight or nine years ago, I don't know why they didn't do it when they installed the carb.
Now I've got to figure out a way to block it.
But now the rear main's gone south, so the carb's the last of my worries about this car right now.
p.s. -- the vapor canister tube enters my carb on the opposite side from the acceleration valve.
The vapor canister is connected to the air cleaner and the fuel tank NOT the carb.
From Pintony
so the shop that put the carb on my car back then must've connected it wrong then?
because on the opposite side of the carb from the acc. pump (and the opposite side of the carb from the mystery fitting) there's a fairly big hose that goes from a fitting on the carb to something under the fender, which I think is the vapor canister.
Hello renton481,
Is this carb on a 1974 2.0?
From Pintony
My Holley 6200 has the same port on it. I've been a bit curious of it myself. Speaking of carbs, are there any recomendations on a good fuel efficient 2 barrel carb for the 2.3L 4 cylinder? I was thinking of just rebuilding this 6200, but it'll cost me $200. If I can get a better one for the same price, that'd be much nicer for the car.
Quote from: Pintony on July 01, 2006, 09:27:26 AM
Hello renton481,
Is this carb on a 1974 2.0?
From Pintony
it's a '79, 2.3