i have this engine, it looks like a .40, but i cant be sure. can any one tell me what it is. it has only one marking, which is a K with an arrow pointing to the left through it.

any help would be apprieciated

thanks,
Eric

P.S. i am try ing to post photos as soon as i can

not sure what the k is but a photo will help

k and b 40

found it a good google search fixed it

http://www.mecoa.com/kb/aero/aircraft.htm

tell me if this is'nt it but it should be

from you discription I would have to say Kraft .61