1984 Mercury 90hp 6 cyl

[eaj]

Originally Posted by turbinedoctor

That might have been me. I have an 84 center console with a 90hp inline 6 and it would do 25 - 30 mph depending on the load I had in it. I just rebuilt the engine and am still breaking it in. Now at 3500 rpms she will do 19 mph, cant wait to get the break in done so I can open it up again. Yes it planes just fine.

Turbinedoctor

what size prop you running on the 90

[Steplift 72']

When I bought my 72 model V20 steplift, it had a 72 model 85 hp Johnson. Tried it out with that motor and immediately traded it for a 73 model 135 Johnson which ran great. I recall the 85 Johnson showed about 28 mph on an old airguide speedometer and you could throttle back a bit and still stay on plane. I really wanted to cruise at 28, not have that for full throttle. If I had a 90 that ran well, I'd use it. Keep in mind the older boats had saddle tanks that held just 40 gallons and the only equipment on mine was a compass and speedometer.