Re: Opinions: 67 Johnson Sea Horse for $200.00
You say the moter was a 75 horse. The 75 horse V4 was produced from 1960 through 1965. All of them were painted white. For 1966 OMC raised the rating to 80 horsepower, then in 67 they painted them green except for the hood. For 1968 they made one last upgrade; they ditched the expensive distributor-magneto ignition for CDI ignition (made its OMC debut on the 1967 100 horse motors), plus they switched to surface gap plugs. At the same time they also raised the rating again, this time to 85 horsepower (ratings went in lock-step; 1966 the 75 went to 80, the 90 went to 100; for 68 the 60 went to 65 & 80 went to 85). An old white 75 horse would look great on that old Thompson, plus a 1964/65 75-horse would run on 50:1. Still they were known for being thirsty however, plus many components were expensive. You didn't say whether it was an Electramatic or not (they made both Electramatic & mechanical shift concurrently), but an Electramatic can prove to be a very challenging motor to restore (expensive & NLA parts). Ultimately you likely made the right call on the motor, but I think a modern motor would look out of place on your Thompson, regardless of how efficiently they function. Hey, a pair of vintage 40s would also look great on that boat .