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Re: Autoline carb C-907 [Re: JD1] #1312081 Mon May 27 2019 02:05 PM
Joined: Mar 2014
Posts: 1,025
J
Jon G Offline
Shop Shark
Sorry for slow reply. I have both of the springs which were used on that model of carburetor. I also have the choke cam with the cable piece & screw. Image below. Send me a PM or contact me at jon_goodman@yahoo.com if you need them. They are not easy to locate today. I've attached another image showing how the spring connects to the cam on the back side of it. Note: if you need to replace the spring, you will need to remove the choke plate and the choke shaft. I also have the new screws and those are becoming harder to locate today. The lower spring can be replaced more easily.

By the way, Autoline's operation may have changed from the days when they were more highly regarded. When I was doing the Rochester study a year ago I wound up with one carburetor they had rebuilt in the last 6 or 7 years. It looked nice...clean and all. After I tried it and later disassembled it, the air horn was warped notably and their "fix" had been to use 2 gaskets. It didn't work (which was no surprise). Also, from what I learned, they now apparently use only a few numbers to identify all Rochester B and BC models: C-905 (auto choke-late version with center post for air cleaner), C-907 (manual choke) and C-906 (auto choke no center post for air cleaner). They do make them look nice, however. The one I had seeped gas constantly at the air horn/float bowl joint before I straightened it. It also ran horribly rich, but that was because the power piston was stuck. I don't blame Autoline for the power piston problem, however. It was as I said 6 or so years old when I got it. The float had not been set correctly however and that is just oversight or sloppy work.

Attached Files
MVC-007F.JPG (26.15 KB, 35 downloads)
MVC-008F.JPG (22.76 KB, 35 downloads)

Jon

1952 1/2 ton with 1959 235
T5 with 3.07 rear end
Re: Autoline carb C-907 [Re: Jon G] #1312129 Tue May 28 2019 12:42 AM
Joined: Apr 2019
Posts: 98
J
JD1 Offline OP
Shop Shark
Thanks Jon. That is the spring I am talking about and mine is definitely broken. I'll send you an email.
Thanks,
JD


1951 Chevy 3100 1/2 ton (1957 235, 4 speed, 411 rear)
Re: Autoline carb C-907 [Re: Gord&Fran] #1312130 Tue May 28 2019 12:42 AM
Joined: Apr 2019
Posts: 98
J
JD1 Offline OP
Shop Shark
Thanks again Gord for the information.


1951 Chevy 3100 1/2 ton (1957 235, 4 speed, 411 rear)
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