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I have a K&B FF engine about the right size for a 3.5 cc , but it has no #s in the circle that usually has the size. Didn’t they make a 3.2 (19) also? Could this be one? How could I tell short of taking it apart and measuring bore & stroke? It has a serial # D0000614 , but I don’t know how to trace it. I bought the engine and some others from a deaceased friend’s estate. Any thoughts would be appreciated, Thanks, BobE
On mine, the 3.5 is molded into the little disk on the side.
The 3.25 has no mark, as if they used the same die and simply ground away the ‘3.5’.That’s a genuine mystery. Both my 3.5’s and 3.25’s are marked like Dan’s with a circle on the side and numbers molded inside the circle.
It is a front intake rear exhaust ball bearing engine?
Actually the first run of 3.25s had the 3.5 milled off. The second run had 3.25 cast on the case. I have several examples of both.
Ron Bennett
Monmouth, ORLooks like I must have a 3.25, Thank you all for the quick replies.
BobE
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