Other how to tell OEM from aftermarket 44's

[davidy]

I need to figure out if I have OEM or aftermarket sbn44's I thought they were aftermarket because I thought I read if they have the square 90 degree style fuel intake/outlet fittings they were aftermarket. is this true or is there something else i can check to be sure?

here is only pic i have of them right now can at least see the fitting i am talking about...

 

[Matt_E]

You can check the number that's printed on it.
See Mikuni manual for explanation of numbers.

 

[davidy]

looked through manual not seeing that part though.
it is stamped MAC 52

 

[Freakrider]

the T-handle fuel adjusters and the 90 degree fuel bosses are usually indicative of after market carbs. Also there are four tiny holes below the butterflies instead of 3 like on paired oem carbs however, single 44 oem carbs are 4 hole and are sometimes paired up for a cheap build.

 

[davidy]

hmmm well maybe i will just try and jet them and install needle and seat assuming they are OEM because they sure as dont work the way they are now assuming they are aftermarket.