Carburetion and Fuel Injection

Carburetion

• This page has an excellent explanation of how carburetors work.

Rebuilding

• Serius Consolidated Inc sells carburetor rebuild kits, which seem to include:
  • float bowl seal
  • top cap seal
  • float needle
  • o-rings
  • main needle and clip
  • main jet
  • pilot screw.
• Partsnmore sells somewhat less comprehensive rebuild kits for vintage carburetors.
  • float bowl seal
  • five o-rings
  • top-cap fiber seal
  • float needle
    • Compare the Sirius kit to the Partsnmore kit for the 1978 CB750.

Petcock

Sealing

• This thread discusses how to seal a weeping British petcock.
• Jomar Gimme the Green Stuff is a soft-setting sealant which should prevent gasoline seepage.

Connectors

Quick Disconnects

It's often nice to have a quick disconnect on your fuel line to make tank removal much easier. There are several options, and most of them are probably bad.

Plastic

MotionPro sells plastic-bodied quick disonnects. Chances are, they're the same as the ones on BMWs that are supplied by CPC - Colder Products Company. The problem is that there are many, many instances of the plastic bodies breaking on BMWs, stranding and possibly igniting the rider!

MCMaster-Carr sells various plastic bodies that are likely comparable to the MotionPro and CPC connectors.

Metal

CPC also makes a chromed brass series (it still uses plastic internals). The problem is, it's still rated to the same 180°F temperature limit!

The other problem is that all of these options are quite expensive. For example, a 1/4" complete connector (male and female sides) chromed brass version would cost $37.49, plus shipping, from quickcouplings.net. In my case, I need two sets of connectors since I have two fuel taps. That's $74.98 for a set of connectors that still might fail being so close to a hot engine and exhaust.