Can anyone give me tips or point in the direction of a diagram that shows me which set screw does what so I can tune my new carb?
facing the carb from the passenger fender with the air cleaner off facing up from about a 45 degree angle is a screw with a big head on it in the bottom part of the carb.. thats your idle screw.. externally other then setting the idle speed thats your only adjustment http://mmb.maverick.to/gallery/showimage.php?i=1617&c=8&userid=3999 original picture (nice motor) http://www.putfile.com/pic.php?img=4354823 circled and marked this is the idle jet screw all it does is richen and lean the carb at a dead idle.. and nothing else. everything else is internal. as for inside the carb.. well without looking to see if it's a jet like a holley/motorcraft or a rod and jet like a carter/q-jet tuning options are unknown as a suggestion try and find a weber down draft style 2 barrel and a adapter if you want "adjustability" if it was me.. I would find a 70 250 and mill off the intake log weld the exhaust ports to make then seperate ports get a clifford header and build a side draft intake with 3 2barrel side draft webers .. expen$ive but ohhh the looks you would get at a car show.. and the performance.. ohh my..
The pictures Scootermagoo posted are of a Carter YF, which is an entirely diffrent carb then the Carter RBS. An RBS looks like this: If your car is stock, throw the carb on, and adjust the idle mixture screw so that it dosen't burn your eyes standing behind the car at idle. Drive the hell out of it. If it stumbles, check your ignition timeing. The RBS is a reliable, fool proof carb that requires minimum screwing around with.
it is a carter rbs type carb. there are two set screws on it, which one does what? i have tried adjusting both of them but neither one seem to be affecting the car at all.
That depends on who the fool is. Haizer, if adjusting the screws doesn't make any difference, one of the internal passages in the carb may be blocked. I'd shell out for a carb kit and rebuild it, they're not expensive and the kit will come with instructions to show how to rebuild and tune the carb.
I have a '76 with a 2 barrel off a Mustang II/Pinto 4 cyl on top of an adapter plate. It was on it when I got it, but it makes the car run alot different.
I was thinking the vw beetle style down draft and port the shishkebab out of the intake hole and drop a scoop over it maybe a cowl and still need that clifford header..lumpy cam... 3-4 speed conversion some 4.10s...
