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? |
bobhasissues |
Jan 4 2010, 01:08 PM
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#2
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seemingly endless issues with my 914 Group: Members Posts: 218 Joined: 13-February 07 From: Chicagoland Member No.: 7,532 Region Association: None |
CB does sell an offset base kit, I have it on my car. I don't remember the part number for the base kit, and you'll need a shorter hex bar. I believe the offset bases were designed for a 356 and not a type IV, but it does straighten up the hex bar and eliminates the need for the offset spacer on one side. I think it's a bit of a better set-up, but will still switch to Jake's cable linkage when he releases it.
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