1983 70hp 3 cylinder

[Oddballmotorsports]

Hi folks Just dragged home a chrysler courier 145 with a 28hp johnson (lol) anyways, looking at a cheaper 70hp outboard, are there any of these I should avoid? and what should I watch out for? anyone have any suggestions? Thanks!

 

[flyingscott]

Stay away from the Mercury 70 hp motors. The OMC 70 hp motors are much better in that class and common so repairs are generally cheaper.

 

[Texasmark]

3 cylinder OMC engines were very popular in my boating circles at the time. Starting with the 3 cyinder loopers in 1969 at 60 hp and on up thru the 75 Stingray (Orange Johnson) great engines, well designed, parts available and cheap and really nice on fuel. Only thing I had against them at the time was it wasn't till 1973 PTT became available. Had tilt before that but no trim.

 

[flyingscott]

PTT was not available on the looper 3 cylinders until 78. They started in 68 as a 55 hp motor. Stay away from anything before 1980 and avoid the 75 hp. The 70 hp was a much better all around motor and the 49 cid Block was made until 1985. Then they became a 56 cid block which is much more powerful>

 

[Texasmark]

PTT was not available on the looper 3 cylinders until 78. They started in 68 as a 55 hp motor. Stay away from anything before 1980 and avoid the 75 hp. The 70 hp was a much better all around motor and the 49 cid Block was made until 1985. Then they became a 56 cid block which is much more powerful>

I had the 1972 125 hp new and only had tilt. In '73 new engines came out with PTT. I wasn't going to swap engines just for that and didn't ask if it could be bought and retrofitted.....wasn't that big of a deal at the time.....actually I didn't know what it could do for you, otherwise I think I would have looked into it. That was also the year I bought the newly available OMC SST (Stainless Steel Teflon...coated prop) which I gladly added to my '72 as every Sunday I'd ding up the aluminum and Monday have to have it in the prop shop. I referenced my date reply on that. Sorry for the disinformation. In later years I bought a late '70's 70 Rude with neither. That was a great running engine on my 16' King Fisher Bass Boat. I referenced the Stinger as that was the highest HP triple I knew of. Never saw one other than in a sales brochure.

 

[racerone]

The 49 cid OMC block was last marketed in 1988 as the prop rated 60 HP motor.-----The later blocks had a better quality crankshaft than earlier versions.

 

[flyingscott]

Actiually the 75 hp was made until 1988 in the 49 cid block. But the kicker was the 56 CID block was more powerful so no real point in buying the 49 cid block in those yrs..