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Showing results for tags 'n54 and m43 needles'.
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I'm working on a restoration project of a 73Z. I'm installing 3 screw round top carbs off a 72 engine. To keep from getting things mixed up I'm working on one carb at a time. I'm currently working on the rear carb. My rebuild kit is a Napco for 72Z. Bought if from a supplier in Japan. The kit has 2 sets of needle jets. One is marked N54 and the other is marked M43. Do the front and rear carbs use different needles? If so, which one goes where? If not, which set should I be using? The car is going to be pretty much stock, manual trans and exhaust headers. I removed the needle from the rear carb slide, but I don't see any number marking on it or they are just illegible. Any help greatly appreciated.
