2300 Bowl Replacement

[kyleandhisIH]

Last weekend I diddled with the Scout in my signature a little, tried to make sense of the silly timing numbers to no avail, and while I was in the process of "correcting" my distributor re-stab (back to the 20's!) during idle, I smelled raw fuel.

Sure enough, a steady two drips per second was witnessed coming from the area of my fuel inlet. Wondered if it might have been a loose inlet connection, so I loosened the flange nut and the receiving nut just to get a feel for where they "were" as far as torque goes. Both broke loose like they were properly torqued, so I'm assuming I cracked the casting on the bowl at some point and somehow didn't spot the fuel drip till now. The accel pump May be the leak point but, I haven't had my hands on the pump, and I have had my hands on the inlet fitting. Probably gonna try to remove the carb and verify this weekend, but I'm willing to bet I just put too much mustard on the big nut during installation.

The problem is that I can't find just the bowl anywhere, they want to sell me all sorts of other stuff I just don't need. I feel ashamed to have botched what was a perfectly fine IH original, and I can't think of any way to "repair" a crack if it ends up being one. Should I be looking for a boneyard bowl, or is there some source of modular Holley components I'm missing? Should I be calling up bowling green?

I'm assuming that if I can locate a bowl, it's just a simple swap-over of float & inlet assembly, plus the accel pump/setting the arm clearance? I've almost convinced myself that this little leak is enough to warrant a whole new 7448 with electric choke, but I know that's far from the truth. :d

 

[Michael Mayben]

Is this the carburetor that we did for you several months back?

If so, then taking care of this problem is...no problem!

However...I'm currently in residence at ihon/Grass Valley for the next two weeks and don't have my entire carb shop with me! I do have many items here now as we have some carb work to do here on-site. My supply of new and used bowls is up north though.

Don't sweat it, we can fix this easily, it just won't happen quickly unless I can kick up some 2300 cores here at ihon that I haven't already found.

Let us know which carb it is, then I'll take care of it for you. I have pics of that carb on the computer here now so I know what is needed.

 

[kyleandhisIH]

This is the carburetor from ihon. Not so sure you guys need to take any action after this past weekend's inspection. I am not so sure of a bowl crack. I checked the inlet and the casting seems solid, though the parting line threw me off. I noticed the accelerator pump fasteners seemed "loose" so each got 1/4 turn or less to tighten. Bolted back to the manifold, no leaks while cranking with the starter/helper watching for the accel pump jets. Soon as I ran the motor (half hour later?) the leak was still there, maybe I need to inspect the flare fitting itself. The fitting was showing white corrosion internally.

Someone recommended a full swap from flared fittings to soft hose on a barbed fitting, which would facilitate a much-needed rerouting of the fuel line. Either way I'll be doing something about it this coming weekend.

 

[Michael Mayben]

After any freshly-rebuilt carb goes through several heat/cool cycles, all fasteners can stand to be snugged up.

I'll post a pic of your carb with a "barb" test fitting installed, I do that on all carbs I work with so I can run 'em. But I first have to install a new version of the photo manipulation software so stand by.

You can't do away with the flare fitting for the inlet...ya simply install a "flare-to-barb" swivel transition fitting that a 5/16" fuel hose will slip over and clamp it. I just did a 2300 conversion setup for a customer an hour ago doing that same thing as part of our bolt-on 2300 conversion kit. A new one will screw right into the brass transition fitting that is sealed to the bowl with a rubber-impregnated steel sealing washer so don't try and tighten the transition fitting any more or the threads will strip.

I do not like to use the "banjo"-type fuel inlet barbs on those bowls, that fitting is why the zinc bowl threads strip and the bowls then crack through the fitting boss.

 

[Michael Mayben]

This is the swivel flare adapter, 5/16" flare to 5/16" hose with a 90* elbow. You could also do it with a straight fitting and eliminate the swivel.