Inliners International Forums General Discussion Engines AFB questions

Hi All,
I have aquired a Carter 625 afb (#9635), which I am rebuilding for a new project. The carb "appears" to be in very good nick but is missing some major components , most of which is easy to get hold of, apart from a couple of items.....

I need the rod which connects to center of the choke flap (pictured). Is this available as a replacement part?

Also does anybody know the correct Edelbrock replacement part number for the accelerator pump. Can I use one from an Eddy 600?

I am used working to with the non - emission Edelbrock Afb's . This is an emissions type carb and has a couple of ports / vents that I am unsure of ( pictured) , what should these connect too? ( this car does not need to meet any emission requirements).

And last of all, how do i accurately check the throttle shaft for wear ?

Any help would be greatly appreciated.
Thanks Jeremy

.... looks like I need to learn how to post pics too...

Sleepin' -- an Edelbrock replacement part will work on your Carter 9635. I think the choke links are all the same in the AFB series. I ran a 9635 on my 454 V8-powered '67 Suburban. Good carbs. The port you circled is the EGR connection. Looks a lot like a second fuel inlet, but it's not. Since I didn't have an EGR, I just capped it off with a 3/8" rubber plug. The other port (~1/4") at 10 O' clock in your pic might be a vacuum connection -- not sure. One guess would be to feed the vacuum modulator on a TH 350 auto tranny -- but again I'm not too sure.
Part number for the accelerator pump is EDL-1470. I'm guessing, since that's the one listed for the 1400, -03, -04, -05, -06 carbs of 500 and 600 CFM respectively. The other accel pumps are for the 1407, -11 [@750 CFM] and the 1412, -13 [@ 800 CFM]. Maybe more is better -- I couldn't say. Save your old Carter accelerator pump piston rod if it's brass, the EDL ersatz will be white nylon and it bends.
No clue as to throttle wear.
If I'm not mistaken, the EDL 1400 is the Carter 9635 in a shiny box. [EDIT-- Edelbrock rates the 1400 @ 600 CFM, but it does have the EGR stuff.]
My source is the Jegs catalog.
www.jegs.com
Hope this helps.

Thanks Sunshine, Ive done a little more rummaging though old photosand mags etc..
The larger port is a bowl vent according to the carter manual I finally found (any different from EGR??), although I'm not sure what it normally connects to, I think its there to assist "hot start ups" etc. Did you run into any problems by capping this?
As for the smaller port , I came across an old photo which showed it connected to a port at botttom of the electric choke housing.

Cheers Sleepy.

Sleepy:
I don't remember any problems with running a blocked EGR port on that 9635 on a BBC 454, but that was the engine that caught fire in the carburator after putting deisel fuel in the gastank by mistake. The carb backfired, the oil- saturated k&n filter got on fire, there was no safety switch on the electric fuel pump, so it kept pumping and the fire got bigger and melted thru the plastic fuel filter under the air cleaner. Things could've gotten worse, but some quick-thinking hands grabbed fire bottles and put it out. Towed it home and it's been sitting, awaiting a total rebuild ['67 Chevy 4WD Suburban] since 1998. Surprizingly, the AFB survived and with a little scouring to get the flame retardant off the exterior and a fresh carb kit, it should rebuild OK.
I doubt that blocking the EGR port was contributory, though.
Carter marine carbs had a gas vent in the same place. Not sure what an EGR does, but I think it stands for Exhaust Gas Recirculation. Some '70s era environmental tinkering, possibly?
I run a Carter 9606 600 CFM AFB on the 350 V8 in my '71 Jimmy, and an Ed$elbrock 1404 500 CFM on the 292 L6 in my '68 Chevy stepside. I also have a Carter AVS that was once a discarded movie prop -- it looks promising. The AVS also has that side 3/8" inlet.