Hello, im brand new on here and am looking and hoping to find the info I seek! A little background on me...newbie workin on carbs but have been a machinist for over 20 yrs. Here is my project.... What I am looking for is to rebuild my carb. I have two quads that are the same casting. One came off of my boat, and one is a spare. I want to use the body and the horn of the spare, due to the fact that they are in way better shape. Now im well aware of the safty issues involving the differences between marine and auto carbs. But I know for a fact that places like National Carburetor for example, are selling re-furbished carbs that were once automobile carbs, but have been modified, and they are selling them as marine carbs. The carb that came off of my boat was one...when I looked up the numbers it showed up as a carb that was used on gmc trucks. Point being, if they can do it, I can do it. I am more interested in the internal alterations that im noticing when I place my two bodies side by side. Im noticing certain ports and holes have been plugged or dev-conned on the boat carb that are open on the auto carb. Was this done on purpose to make this a marine carb?? And if so, for what reason? And should I replicate these alterations on the new body? Basically...I don't want the easy way out, I want to learn how and why. There are also brass bleed-off inserts on the marine body.
