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Discussion Starter #1
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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Discussion Starter #2
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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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.

Bear
 

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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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Discussion Starter #5
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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