Review on ALAVENTE Carburetor For Ford 240 250 300 YF C1YF 6 Cylinder CIL Engine 1975-1982 D5TZ9510AG, Carb For Carter YF Type, Replace # RSC-300A 6307S 6054 6055 6-736 6056 6057 6058 6059, Automatic Choke by Jahan Arias

Put this on my '87 YJ after doing the nutter bypass. Some things you should know before buying this carburetor that I learned after MONTHS of headaches. 1) This is a Motorcraft 2150, NOT a 2100. 2) This has the 1.14 venturi, ideally you want the 1.08 from what I've read. 3) The Mr. Gasket 1937 adapter will cause you to have a massive vacuum leak on the base of the carb. 4) You will need to fabricate an adapter or buy one from a guy on ebay who you'll read about in the hundreds of forum threads your likely to go through. 5) The accelerator pump will need to be replaced with one with a shorter shaft, else you'll have bad hesitation off idle. I used a Dorman 90082. 6) The power vavle is crap, it's a single stage with no markings on it to tell you what size it is and it looks like it was glued together from some scrap metal, get a replacement, 8.5 is a good size but I'm actually using a 7.5 right now. 7) The jets might be #48. They are the only components that are marked and mine read 485. Replace them with some #47's from Mike's Carburetor Parts. UPDATE: Power valve and jet threads are wrong size because this carb is foreign junk. Do not buy it. I'm still having hesitation off idle. I've checked everything else. Going with a Weber or efi next.