Carb in question is a Rochester 2GC on a 1976 Buick 231, accelerator pump acting up, carb has likely never been apart, time to rebuild.
I have to pick from
Rock Auto: STANDARD MOTOR PRODUCTS "Hygrade" or AIRTEX / WELLS
Oreilly: Walker Products
Autozone/Advance:GP Sorensen
NAPA
I know if it has a plastic float it should be replaced, is there a preference between brass and "nitrophyl"? It seems O'Reilly offers a brass one (also walker brand).
I've only done a couple of automobile carbs and it's been a while too, any tips beyond the general towel on the bench or work in pans to stop stuff from rolling away? Any 2GC specific stuff? In my reading I understand a couple of staked in parts should be removed, the "power piston" and some T shaped piece in the accelerator pump circuit?
For oem carbs, I just buy whatever kit they sell at whatever store I happen to go to..
For aftermarket carbs (Holley, Edelbrock, etc.) I get one from whoever made the carb.
I also look at what a new carb costs sometimes it is not much more.
I've been using the Standard Motor Products kits professionally for about 25 years. They fill the need and I don't have any complaints about them.
The staked in deal on the accelerator pump is just a little metal tee that fits down into a slot on the carb body. When you get the top off you'll see it sitting there flush on top of the carb main body. Just grab it smartly with a very good pair of grippy needle nose pliers and yank it up. Under it should be a little spring like in a ball point pen, then under that a steel BB type of check ball.
dean1484 wrote:
I also look at what a new carb costs sometimes it is not much more.
Although if you're looking at a parts store rebuild instead of a new carb - I'd take the rebuild kit. A lot of the mass produced rebuilds these days are junk. I managed to rebuild a Holley 1920 with a NAPA kit when I was about 18 with absolutely zero experience working on carburetors, and had better results than what I've had with going with "professionally" rebuilt carbs - probably because I didn't hose it down with a sandblaster or mix and match parts from a bunch of different carbs.
2GC is a very simple rebuild. Done many of them in my street stock days.
Brass floats last pretty much forever and will stand up to any kind of fuel, so there's that.
The Carburetor Shop in Missouri is supposed to have high quality rebuild kits: http://www.thecarburetorshop.com/ I think they have sourced components that stand up better to e10 gas, but you'll have to ask them about that. Otherwise I'd go with Standard Motor Products
