General Category > Quadrajet Carb Talk and Tips
Advice building carb
Ethan1:
--- Quote from: Ethan1 on November 25, 2014, 08:46:53 PM --- Welcome to CHP!
Stock specs of that carb were .072" Primary Jets, 52M Primary Metering Rods, "K" Secondary Metering Rods and DR Secondary Metering Rods. :D
--- End quote ---
Sorry, "K" Secondary Hanger. Not Secondary Metering Rods. :-[
429bbf:
cliff would say start with a complete overhaul and good parts . throw the brass float away. did you try the tip in . this will tell you if your close without changing a bunch of pieces for practice. fwiw
CultClassik:
Yes, complete re-overhaul is planned! What's wrong with the brass float? I was under the impression that they were more durable than the plastic type with ethanol blend fuel?
Yes, I did the tip-in and it seemed ok. The plugs look decent but a little lean. I assumed going from the really lame stock cam and heads with ~8:1 comp to the (still mild, but quite a bit more than stock) Voodoo cam and Vortec heads with ~9:1 compression would like at least a little more fuel than stock so I'm assuming jets, rods and hanger are going to be needed?
Ethan1:
--- Quote from: CultClassik on December 07, 2014, 12:13:32 AM ---Yes, complete re-overhaul is planned! What's wrong with the brass float? I was under the impression that they were more durable than the plastic type with ethanol blend fuel?
Yes, I did the tip-in and it seemed ok. The plugs look decent but a little lean. I assumed going from the really lame stock cam and heads with ~8:1 comp to the (still mild, but quite a bit more than stock) Voodoo cam and Vortec heads with ~9:1 compression would like at least a little more fuel than stock so I'm assuming jets, rods and hanger are going to be needed?
--- End quote ---
I actually prefer the brass float over the nitrophyl. The nitrophyl floats are hard to tell if there bad anyways. JMHO
Cliff Ruggles:
Brass floats are a disaster waiting to happen, and they do not provide the same fuel level as the nitrophyl floats.
We installed one brass float this year, in a 2bbl application because nothing else was available. About a month after sending the carb out, the new owner called and said it was flooding. The new float was full of fuel and sitting on the bottom of the bowl. The failure rate is very high for brass floats, at least from what I've seen here, so we avoid them.
I've had zero float failures with the new closed cell material and any type of fuel, even in straight alcohol and E-85...FWIW....Cliff
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