Carb linkage and velocity stack questions, Need opinions on CB performance recommendations |
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Carb linkage and velocity stack questions, Need opinions on CB performance recommendations |
Van |
Jan 4 2010, 12:52 PM
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#1
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Member Group: Members Posts: 199 Joined: 15-January 08 From: Hyde Park, NY Member No.: 8,571 |
I ordered a dual carb linkage kit and velocity stacks from CB performance for my 44 IDFs... 2 things surprised me - I called them, and was told, "don't worry about it - that's as good as you'll get." I'd like some other opinions...
#1: the air cleaner bases (there's a left and a right) have the same "offset" for the linkage bar - meaning the bar will be at an angle to the engine when it's installed. They said, "We don't have anything for the type 4 offset - don't worry, you'll be fine." I've seen pictures from searches, and it looks like many people have setups with a straight bar - what are they using? #2: the velocity stacks have a bore which is a bit bigger than the top of the carburetor - like maybe 3/8" larger in diameter. (Actually, the air cleaner base plate has the same large bore, too.) Anyhow, it seems to me, that if one has that large a step transitioning from the velocity stack to the carb throat, any gain from the velocity stack will be eliminated from the turbulence. CB's response, "Don't worry - you'll never feel the difference." Does anyone have any guidance for me? Should I try to get velocity stacks the right size? Should I modify the air cleaner base plates to make the bar perpendicular to the crankshaft? |
jmill |
Jan 4 2010, 05:05 PM
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#2
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Green Hornet Group: Members Posts: 2,449 Joined: 9-May 08 From: Racine, Wisconsin Member No.: 9,038 Region Association: Upper MidWest |
Isn't that what I said? Stock bases require an offset spacer on each side. Offset bases require a spacer on only one side. My bad. I didn't know the cockeyed linkage had spacers on both sides. I always went with the offset ones (IMG:style_emoticons/default/beerchug.gif) |
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