OMC 1 3/8" carbs

[andmar]

Anyone know what year/hp cross flows used 1 3/8" carbs.

Thanks

[brichter]

Those are V6 carbs and some 140 v4s......Do you need some?

[andmar]

I picked up a set on ebay, but thanks.

[Xpress2830]

Good mornin hows it goin? I saw your post here. The carbs you are referring to are these 1 3/8 venturi are carb bore? I have some 50 twin carbs rhey are 1 1/4 venturi and 1 / 1/2 bore. If these are in fact 1 3/8 venturi I am interested in locating some. Thanks, Bobby

[filthy phill]

the carbs talked about here are twin barrel carbs, no way to fit them on a twin cylinder motor.
they are for the v4 motors and have just the two bodies, 1 up top and 1 down the bottom.

[LittleCharger]

the carbs talked about here are twin barrel carbs, no way to fit them on a twin cylinder motor.
they are for the v4 motors and have just the two bodies, 1 up top and 1 down the bottom.

You can run them on a twin, just need to make your own intake out of aluminum, the reeds in a twin are the same as the v4 reeds

The issue is you'll won't get the performance your looking for unless you port it for all the fuel and once ported for all that fuel it will be only happy on the top end.

you can look to some mercury 125 carb for a bigger single bore

[JohnsonM50]

the carbs talked about here are twin barrel carbs, no way to fit them on a twin cylinder motor.
they are for the v4 motors and have just the two bodies, 1 up top and 1 down the bottom.

Not true, I've done it. With some experimenting got it to work very well on a 31.8 OMC twin cross flow. It was within 1 mph on top & boosted mid range nicely. It also started better.

[MODIFIEDOUTBOARD]

The 1" venturi 2bbls will light up a stock OMC 50 Twin.
Getting on plane isn't that bad with a light boat.
Only thing I never did was rig a PROGGRESIVE throttle to open one barrel at a time.
There are several sound reasons that 2bbls work on a twin........

[filthy phill]

not at those rpm and prop sizes you dont

[LittleCharger]

not at those rpm and prop sizes you dont

Seems reasonable to me he's running a sst45 case