NOS model 13

[CarlsonMotorsports]

Is it common to find these engines with the pull choke carb? All the ones I have seen with that style breather has the raptor style carb.

Common with older engines, sure. The pull choke pre-dated the pulsajet with butterfly choke.

 

[Flatlives]

I still have that unmolested engine!

 

[OVALTECH1]

I still have that unmolested engine!

I still have mine too… In it’s box with the factory paperwork !

 

[FlatheadsForever87]

Common with older engines, sure. The pull choke pre-dated the pulsajet with butterfly choke.

Wonder why all I've seen with the butterfly choke on em.

 

[CarlsonMotorsports]

Wonder why all I've seen with the butterfly choke on em.

Possibly replacement carbs? They are a direct replacement as long as the tank has both bolt patterns (all newer tanks do.)

 

[ktd]

i have a newer one i/c gold model 133212 do you know if it has dule bearing

 

[Flatlives]

All I/C have the steel sleeve but not all I/C have dual bearings. If memory serves me correctly, the third digit on the model number is what indicates how many bearings it has, amongst a couple other irrelevant things. So if third digit is higher than 1 then it will have more than 1 bearing.

 

[CarlsonMotorsports]

^ Not quite. third digit refers to cylinder in most cases.

The first 2 digits are the cubic inches (13 in this case.) The 3rd digit (1st digit after the displacement) is the design series (ie cylinder.)
The 4th digit (2nd digit after the displacement) is the style of crank (vert. or hor,) carb, and governor.
The 5th number (3rd digit after displacement) "1" in this case, refers to the bearing. This is a flange mounting plain bearing.
The 6th number (4th after displacement) is the type of starter.

or at least, that's how I remember it.


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Brian Carlson
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