Maybe you Rochester guru's can help me with this one. It's not so much actual carb identification as application. The carb is a Rochester 2G. It looks almost identical to the standard ones alot of us use, so I didn't bother to take a picture. Outwardly it looks like the garden variety 2G, with a couple of small exceptions. The fuel inlet has no filter. Threaded for 1/8 npt fitting. The base plate is aluminium and looks a little shorter, (thinner) than standard. The base plate is rectangular in shape, standard small base bolt pattern, and the hole on front drivers side is slotted. Inside the venturi is 1 inch instead of 1 3/32. Any Ideas?
I bought this rebuilt, NOS. I think it was an Olds application, but now cant remember. It was new, newly rebuilt, in box, but dumb a## me didnt write down number and application.
Oh, and just because you buy a rebuilt carb doesn't mean its right. I have had to play with adjustments to get to idle correctly, but I attributed problems to running 2 primary carbs instead of a primary and a secondary. The flat spot was bugging me and last couple of days it wanted to die at idle. So I checked and accelerator pump wasnt doing very good. This one had the leather one. So I got a std 2G kit at my local autozone and put what would fit in. I wasn't going to remove the base plate as the std gasket won't fit. But I got to looking and the gasket between baseplate and body didn't look like it matched properly, so I shined a flashlight down the venturi and could see light between body and base plate. So I removed it carefully so as not to ruin mounting gasket, and it didnt match. Fortunately the gasket in the kit did. I installed it and put it back on the rat. Runs and idles like a different carb. If it was a newly rebuilt 2010 I would suspect the worse before I put it on but as it was old stock I thought it would be of higher quality. Goes to show you not all was better, (back in the day).
Any help IDing this carb and application would be greatly appreciated. I have yey to find a mounting gasket yet. And I am not too good anymore at making them. Thanks to all