1987 140 V4 Looper Carb Question

[Skools Out]

the 120's and 140's have the same carbs only difference is the reed set and jets, a 120 has small throat reeds and the 140's use the same reeds as the upper 225's had. I've converted several 120's to 140's by changing the reeds carrier and reeds to 225 uppers plus rejet to 140 size jets.

[nymack66]

Originally Posted by THEFERMANATOR

I understood what you were saying, the first two numbers are the port and starboard carbs for the 86-early 87 140 as they were jetted differently on each side. The second set of numbers are for a completely different set of carbs as the upper 4 carbs are one number on the 225's and the lowewr 2 are another number. If you have those 2 numbers both attatched to one throttle body, then they are most likely a pieced together set. Also some of the early 86-87 225's if they were short shafts got the 200XP carbs. I would stick to the smaller of the 2 sets which are most likely what should be on it. IIRC 120 carbs are 1 1/8", so 1 3/8" should be 140's.

Ferm,
So you are saying I need to install the "smaller of the 2 sets" which is the 1 5/16 ? Note I have the larger currently installed 1 3/8 just wanted to be sure. Thanks

[THEFERMANATOR]

I would leave the ones on it on there if it were me. I'll try and do some more digging later and see what it should have on it though. If it stops raining I'll go out and measure mine since my 140 has a set of 86-early 87 140 carbs on it with those numbers.