OMC 3Cyl carb identification

mattmak · **Joined:** June 5th, 2015, 8:56 am **Posts:** 533

Can anyone help identify this set of OMC 3Cyl carbs? the casting on the body of all three is 321406.

There is a "70" marked in ink/paint on the top of all three bodies, and the front opening is 1.5"

photos:
http://mattmak.com/photos/omc_3cyl_carb ... /index.php

The interwebs haven't helped much. Only found one reference.

thanks,
M

mattmak · **Joined:** June 5th, 2015, 8:56 am **Posts:** 533

Well, I kinda reverse searched for similar looking carbs via google images and it looks like they are early 70hp, so like 1974 or 1975?

The next question is are they useful for anything? I do plan on restoring a very early 3cyl for nostalgic reasons and am wondering if these will work with the 1970ish 60hp block..

hec2buck · **Joined:** August 22nd, 2013, 4:13 pm **Posts:** 273

These sound like the standard carbs for the 49.1 cid 60, 65, & 70 hp. Do they have manual choke plates and are they 1 3/8" bore on the intake plate side?

mattmak · **Joined:** June 5th, 2015, 8:56 am **Posts:** 533

hec2buck wrote:

Do they have manual choke plates and are they 1 3/8" bore on the intake plate side?

Yes and yes. I've searched for 70hp carb photos online and these look a lot like what comes up for approx 1974 to 1978..

EDIT: added link to photos in the first post.

hec2buck · **Joined:** August 22nd, 2013, 4:13 pm **Posts:** 273

Yes. those are mid 70's carbs from 49.1 cid. All motors except the 75 hp Stinger

HPBCANADA.COM

OMC 3Cyl carb identification

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