Rochester Carb rods - Pontiac GTO Forum
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post #1 of 5 (permalink) Old 07-07-2018, 11:08 PM Thread Starter
 
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Rochester Carb rods

Hi... while collecting Rochester rods I have found two types. For instance I have a 42 and a 42B...then a 43 and 43B..44 and 44B..you get it. The B rods are definitely tapered differently being fatter off idle then quickly tapering at mid rod while a standard rod has a uniform taper along the length. Does anyone know why the difference and what the application may have been for?
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post #2 of 5 (permalink) Old 07-11-2018, 01:43 PM Thread Starter
 
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I finally found some info... looks like the B is a high performance 0.026 tip rod...but so is the 43...M would designate truck use for better mileage it has a 0.036 tip
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post #3 of 5 (permalink) Old 07-11-2018, 11:35 PM
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Hang on to those... the variety of available rods has just about dried up. The only source I know of that has any selection at all is Cliff Ruggles, and he machines them himself.

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post #4 of 5 (permalink) Old 07-12-2018, 11:37 AM Thread Starter
 
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Thanks...discovered that already and I happened to luck out and find someone with a treasure trove..but he is getting reluctant to sell as well!!
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post #5 of 5 (permalink) Old 07-12-2018, 11:38 AM Thread Starter
 
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As well.. my car runs much better on the B rods but I am having trouble with a rich idle so that probably makes sense judging by the shape of the tip.
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