2bbl rochester on the 40 (1 Viewer)

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Feb 9, 2002
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got this carb with autochoke (my old rochester one was manual).

i'm sure many of you hate the idea of this carb on a 40, but get used
to the idea because i'm not changing to a different one, and i don't want to debate the issue.

if someone who knows rochesters could help me.....
there seems to be a rich-lean dial on the choke, as well as some port in the center. i assume the port is supposed to read temperatures of the engine, but i don't know what hose to run to it. i also don't have any idea how to set the choke to rich/lean.
any help would be great.
 
YOWZA!
i just bolted this new rochester on, and it's day and night from my old one.
i haven't tuned it at all, and it idleing smoother, accelerates smoother, pulls from the line without chokeing and coughing, and you should hear it sing while bombing up a snowy hill.
i am so glad i finally decided to swap on a new one, it's like having a brand new engine!
 
The Rochester 2GC is a good carb, but there are many different models. Stove heated models had a pipe connecting it to the exhaust, while electrical models had a wire. You just turn the choke until you get enough choke clusure at your ambient low temperature and it opens fully at operating temp.
 
i don't know how much is enough at ambient temperature, but i think i can get it to open fully at operating temp.
thanks for the tip.
 
Did You Find Your Newer Rochester At A Wrecking Yard, Or Did You Buy It New? My Wife Has A Holley 2 Barrell On Her 40, And It's Acting Up, I've Been Thinking Of Rebuilding It, But It Doesn't Do Too Well On Inclines, Can't Exactly Fork Out The Money For A Weber Either. How's The Rochester On The Inclines?
 

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