I just hooked up my linkage on my 2x4 setup. I followed the pics from one of the prior posts. I have a couple questions:
1) The rear carb linkage has a slotted arm. When the throttle opens, the second (rear) carb opens slightly later than the first and at full throttle will open all the way. However when I manually close the throttle, the rear carb does not fully close due to the slotted linkage arm. Is this correct...it seems like a spring should be used to pull it closed?
2) Is there a process to set the linkage arm length correctly? I set it up so that when closed, the rear slotted linkage is centered on the little peg it mounts to. Ans at full throttle both carbs are fully open.
Thanks for any help.
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"There are 10 types of people out there....the ones that understand binary and the zeros that don't."
How goes the project?.....Each of your carbs should have a small spring around the primary throttle shaft, this will close the carb if your linkage is adjusted properly.
If you can not adjust this out with the linkage you may have to remove your carb and adjust the throttle stop underneath .
The location of the slot on your rear linkage just depends on how you want to drive your car, take all the slack out for max performance, or put in all the slack and you can drive on two barrels and save a lot of fuel when you want to.
KK
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Foolish consistancy is the hobgoblin of tiny minds
Hey Karl,
Thanks for the reply. Looks like I may have to play around with the linkage after the engine is up and running. There are a couple recent pics in my gallery none with the linkage though.
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"There are 10 types of people out there....the ones that understand binary and the zeros that don't."
Cobra Make, Engine: ERA 427SC w/427so, ERA GT #2002
Posts: 1,106
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Joea:
Following is another look. No slotted linkage on mine, but direct acting. The slot gives you progressive action.
"And at full throttle both carbs are fully open.", which is the way it should be.
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Tom
"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough HORSEPOWER." Mark Donohue
2x4 Linkage Question
Linear Mode
