[THEFERMANATOR]

Originally Posted by THEFERMANATOR

My 140(same carbs as a 225) only have 2 screws holding the butterflys in, and all of the 225's I've worked on have only had 2 screws holding the butterflys in. These were all 91 and older motors though. I know the throttle plates are different in between the two. They have different size air cuts in them, and are 2 different sizes. Except for 85. In 85 they kept the same carbs for both 120 and 140. The 120 had 57 main jets with 18 BTDC timing, and the 140 used 59 main jets with 22 BTDC timing. But OMC quickly found that this led to cylinder overheating(hence how I came abouts my 85 140).

Disreguard most of this statement :-[. I went and re-checked my current 140 carbs and they do have 3 screws in them. But I'm 99.9% certain(can't be 100%, I threw them out when I started my last engine build needed space) that my 85 carbs had 2 screws in them. I know they were not 120 carbs because I compared them to a set of 120's before I got my 87 140 carbs. They had different holes drilled in them than the 120's had, but they did use pretty much the same butterfly size as the 120's.


Let the beatings begin.