AFB Choke body piston
#1
Team Owner
Thread Starter
AFB Choke body piston
I've got a sticking piston in the choke body of my 65 with Carter AFB. Should that piston come out? I can't seem to get it high enough to get it out. It hits the inside lip of the body before it comes out.
Anyone have a choke body with piston for sale? I don't need the spring or cover. Thanks
Anyone have a choke body with piston for sale? I don't need the spring or cover. Thanks
Last edited by 65GGvert; 09-10-2011 at 12:47 AM.
#2
Team Owner
Thread Starter
Here's a picture of the piston that's binding and holding the choke on.
#3
Le Mans Master
the piston is removed by removing the screw on the linkage inside the choke housing, then you can turn and worry it out of the bore
emory it up and try to clean the bore with a small rifle brush
you can adjust the "break" of the butterfly by bending the tang on the linkage
you can also try to remove the plug in the casting if need be....good luck....
emory it up and try to clean the bore with a small rifle brush
you can adjust the "break" of the butterfly by bending the tang on the linkage
you can also try to remove the plug in the casting if need be....good luck....
#5
Team Owner
Thread Starter
Thanks midyearvette, I did remove the screw and when I lift the piston it binds extremely tight at the top and I can't get it out. I can't get enough pull on it to force it higher. It feels like something is maybe warped at the top of the bore cylinder It also looks like the lever that is attached to the piston would hit the inside lip of the choke body before the piston comes out of the bore. I bent the linkage enough to get the choke to work by using the lower part of the bore where it is not binding. It seems to work great as it is now, but I just would feel better if I could fix it like it's supposed to be. I saw one on ebay for $50 plus shipping that I may go for if I don't get this one freed up at the top of the range. Thanks again for your reply.
#6
Team Owner
Thread Starter
And, here's a pretty detailed rebuild instruction document
http://www.corvette-corner.de/C3-63-76-Vergaser.pdf
http://www.corvette-corner.de/C3-63-76-Vergaser.pdf
#7
Tech Contributor
But, I still found a cool PDF I'm adding to my own technical reference library, so it wasn't a total loss!
#8
Team Owner
Thread Starter
It is a great file, I found it by accident while searching choke information. I think I might eventually just buy another choke base and replace it. I'm going to a cruise today, so for now it's working fine.
#9
Team Owner
Thread Starter
Final resolution. I took the choke body off and forced the piston out. It was very tight and took a lot of force. Sanded down the inside port and polished the piston. Now slides very freely and choke and fast idle work great.
#10
Le Mans Master
way to persevere