03-11-2017, 04:50 PM
(This post was last modified: 03-12-2017, 10:13 AM by carl haydt.)
Dean,looks to be an 101B. 5 fins above the exhaust port & counterweights on crank plus copper o-ring head gasket are what I can see in pics. Should have had a metal tag riveted on with a prefix of 17 or possibly a replacement block.