Cliff's Quadrajet Parts and Rebuild Kits
Quadrajet Problem Solving => Diagnose a Quadrajet carburetor problem => Topic started by: Mr.Pontiac on October 11, 2017, 05:04:30 PM
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I had it here on my bench but got thrown in with other parts from carbs. So what does it look like and proper metering rods should be what size???
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It is a short spring and not a lot of coils. If you have one of our spring kits it is the orange spring from the kit. I don't have a listing for what jets and rods went into that carb number but I usually free up the APT system when I build those and install jets and metering rods matched for the application......Cliff
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Cliff, yes sir, i have the orange spring with your kit, super so far i just do not know what the power piston itself looks like??? Pin style for APT or with a hole up thru???
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704 casting should be the pin style, With the apt adjustment in the baseplate. If the adjustment is through the air horn, it should be the pin-less style.
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Correct, the 7041250 uses the early APT system with a "post" on the bottom of the power piston and adjustment is made with the screw in the baseplate located under a cover between the mixture screws.
It will be loctited in place and often difficult to remove. We make an external APT screw for those with a spring on it so it will hold it's adjustments if you are trying to use it like a later model APT unit......Cliff
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Thank You very much!!