I spent some time playing with the TV cable bushings on both my cars, '91 SEFI 302 and '83 carbureted 302, and came to some conclusions that I've outlined in the attached images.
Since text has a habit of lasting longer on the internet than images:
Two common styles of bushing exist: rubber/plastic one piece, or metal bushing with a retaining clip.
The rubber/plastic style seems to work perfectly and has the potential to be reliable on carb/TV rod applications, when it is not removed and reinstalled. The bushing is more or less one-time-use because the ridge inside that holds it onto the peg wears down. The examples I've worked with are ATP part number LO-28.
This style of bushing, while it was original equipment, is not as adequate even when new for TV cable applications. The design of the cable seems to apply forces to the bushing that encourage it to deform and the cable end can pop out. Obviously with a new bushing this doesn't seem to be as big of an issue but with any amount of wear it may be more of a concern.
The metal bushing and clip works equally well for cable or rod, with two caveats for the rod setups:
-If the bushing you bought has a clip that has a flat/straight side instead of mirrored (see picture), it is unlikely to attach reliably in a TV rod setup, whereas it will work well enough for a cable.
-The metal bushing should be installed "backwards" for a TV rod to avoid the rod itself pushing the clip off, which I have been able to cause in testing.
Both of these have to do with the exact size and shape of the peg on the end of the cable vs the peg on the side of the carb.
Just my thoughts and experiences so far. Basically, it looks like the rubber/plastic bushing is just fine for its originally designed application, and not so hot for the cable design that came later.
Since text has a habit of lasting longer on the internet than images:
Two common styles of bushing exist: rubber/plastic one piece, or metal bushing with a retaining clip.
The rubber/plastic style seems to work perfectly and has the potential to be reliable on carb/TV rod applications, when it is not removed and reinstalled. The bushing is more or less one-time-use because the ridge inside that holds it onto the peg wears down. The examples I've worked with are ATP part number LO-28.
This style of bushing, while it was original equipment, is not as adequate even when new for TV cable applications. The design of the cable seems to apply forces to the bushing that encourage it to deform and the cable end can pop out. Obviously with a new bushing this doesn't seem to be as big of an issue but with any amount of wear it may be more of a concern.
The metal bushing and clip works equally well for cable or rod, with two caveats for the rod setups:
-If the bushing you bought has a clip that has a flat/straight side instead of mirrored (see picture), it is unlikely to attach reliably in a TV rod setup, whereas it will work well enough for a cable.
-The metal bushing should be installed "backwards" for a TV rod to avoid the rod itself pushing the clip off, which I have been able to cause in testing.
Both of these have to do with the exact size and shape of the peg on the end of the cable vs the peg on the side of the carb.
Just my thoughts and experiences so far. Basically, it looks like the rubber/plastic bushing is just fine for its originally designed application, and not so hot for the cable design that came later.
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