Finally got my new fuel sending unit squared away and could put on the "new" 4300 my buddy gave me. Once the fuel bowl finally got some gas in it, the engine fired up instantly with the classic one pump start. However, it quickly dies unless the gas is further pumped. After a while of working with it, I noticed that it has the (also classic) leak at the front of the fuel bowl. Since there is at least one stripped screw on this carb, I am becoming reluctant to bother rebuilding it, as I may just find it to be too much trouble.
I am considering ditching this carb and getting a 4100, my familiarity with the 2100 and the general good praise I have heard of the 4100 (and the denigration of the 4300) being the key factors. I am not concerned with "code correctness" (indeed there was no 4100 for 1968 Mustangs), but I do want a carb that actually works. In the picture of the bottom of the throttle body here, there seems to be a little vacuum fitting at the "front" of the carb below the thermostat housing. Is this for distributor vacuum advance? Do all the 4100s have vacuum advance? I need it. Also, are the 4100s from the Thunderbirds, Galaxies and such interchangeable here, at least functionality wise? I notice that the choke hot air fitting is pointing a different way on the Thunderbird pics at mustangtek.com.
I am reluctant to "lose" all the carb info in my 68 shop manual, would I set up my carb to specs in, say, the '66 manual? Any thoughts of any kind? 4300 defenders?
I am considering ditching this carb and getting a 4100, my familiarity with the 2100 and the general good praise I have heard of the 4100 (and the denigration of the 4300) being the key factors. I am not concerned with "code correctness" (indeed there was no 4100 for 1968 Mustangs), but I do want a carb that actually works. In the picture of the bottom of the throttle body here, there seems to be a little vacuum fitting at the "front" of the carb below the thermostat housing. Is this for distributor vacuum advance? Do all the 4100s have vacuum advance? I need it. Also, are the 4100s from the Thunderbirds, Galaxies and such interchangeable here, at least functionality wise? I notice that the choke hot air fitting is pointing a different way on the Thunderbird pics at mustangtek.com.
I am reluctant to "lose" all the carb info in my 68 shop manual, would I set up my carb to specs in, say, the '66 manual? Any thoughts of any kind? 4300 defenders?