Obtaining the special Carter Metering Rod Gauge is not always possible so this page also explains some alternatives. After the rebuild and all clean! The tip I used in the dial indicator has a flat face but didn't screw all the way in the plunger but it is bottomed out in the threads. Reconnect the choke lever arm, accelerator pump rod and fast idle rod, in the same fashion you removed them. Turn the same screw counterclockwise until it reaches the highest vacuum number on the gauge, indicated in inches of mercury. The metering rods vary in length from the start of the tapered area to the spot the pin rests on. Use needle-nose pliers to bend the innermost tang next to the float to adjust the height. Metering Rod Setting Tools Here is a drawing of the Home made tool from the Internet that I made to save you from looking it up.
Direct to your comment about the needle and seat being different from what you found in the kit. Home Made Metering Rod Setting Tool Now for comparing them on the carb on my Jeep. I think a lot of people that overhaul their carbs just put the new metering rod and jet in and expect it to be the right setting. Will this create any performance issues? The Carter carburetor has been around for a very long time. The plunger is set on the metering rod with the plunger as straight in line with the metering rod as I can get it. It is important that the plunger tip touch only the metering rod and not the washer on the pin. Disconnect fuel line at carburetor.
Some are very large and might take some time to download, depending on your internet connection. Use a small ruler to measure the distance from the bottom of the air horn gasket surface to the bottom of each float. Look at the position of the choke valve at the top of the carburetor. Please do not distribute these manuals. Thankfully, Eugene still had the original Carter W-O carb. The length of the shoulder to contact area in jet is 2.
Connect the negative lead of a tachometer to a bare metal engine source. Disconnect the fast idle rod right next to it, in the same fashion. It was originally used on Studebaker cars from the thirties and forties with six cylinder engines. Can anyone share any advice or assistance to remedy this problem? Loosen and remove all 10 air horn screws on the top of the carburetor, using a screwdriver. Tighten the three screws with a screwdriver.
When I checked my current setting it had. Refer to your Carter manual for the location of the linkage arms that connect to the top case air horn of the carburetor. When I checked the free travel using the metering rod I now have. That means with a dial indicator on the top of the rod I could move the rod up. On Vehicle Dial Indicator Metering Rod Adjustment Setting the metering rod on the bench is a little easier but you still use the same method as above while the carb is clamped to a drill press table. Carter W-O Carburetor Manual Detailed service manual: Complete factory service information for the Carter W-O carburetor: theory, detailed cutaway diagrams and complete overhaul procedures. In the photo below I have the dial indicator set up on the exhaust manifold and against the head in a spot where it is solid and doesn't move.
Some Jerry Rigging should be expected. Moving the Home made tool under the pin I could just fell the tool as it rubbed the bottom of the pin. The idle adjustment screw indicated in the figure above is the only service adjustment provided on the carburetor. Refer to your owner's manual for the proper idle rpm setting for your engine. The instructions include exploded view drawings of all the carburetor components, step by step disassembly, assembly, adjustment guides and adjustment gauges. More manuals for specific carburetors may be available there. Disconnect throttle control rod at throttle lever.
Remove the vacuum line at the carburetor base. Turn the other idle mixture screw clockwise until the engine begins to stumble. You have to back the throttle screw off 6 full turns to be sure the throttle plate is closed. Adjust carburetor paragraph b above. Tighten nuts evenly, Connect throttle control rod, and throttle and choke wires.
Below is a photo of the Carter, Snap-On and Home made tool. The choke lever arm operates the the large choke valve in the top of the carburetor. Different Needle and Seat Ass'y -- the needle and seat assy in my rebuild kit are different from the needle and seat that were in the carb. Because of the differences in the dimensions of the metering rods and possibly the jet don't expect replacing the metering rod and jet in an overhaul without resetting the pin to end up with the correct setting. Remove the hairpin retaining clip that attaches to the choke lever arm, using needle-nose pliers.
Edit: Just looked at the diagram, there appears to be a gasket on the metering rod jet, if you can't find something that will work, let me know, I'm sure I have extras. To adjust the floats, use needle-nose pliers to bend the tangs on the outside of the hinge mechanism, either up or down. I used dial calipers along with a 10 power glass and a jig to hold the rods as I made the measurements. Don't forget to visit the technical pages for your specific carburetor. Alternate dial indicator method of setting the metering rod Knowing what I found a careful person with a dial indicator and magnetic base could set the metering rod without a tool by setting the free travel of the rod to the. Today the owner of a Carter carburetor can make some simple adjustments to achieve peak horsepower and performance. Rebuilding the Carter W Rebuilding the Carter W-O Carb A pretty good rebuilding guide was written by Richard Meagley and posted on his website Mightymo.
For originality, not functionality, I wanted to keep it. I also used a Peak brand 10 power comparator to do the small measurements. Turn one of the mixture screws clockwise until the engine begins to stumble. Don't remember a seal on the metering jet, but the above link will show if there's one that supposed to be there. You can use the rounded tip that comes with the dial indicator but you have to be very careful to get it centered on the metering rod and not touching the pin washer to get a good reading. The length of the shoulder to contact area of the jet is 2.