1974 Merc 650. How fast should I be going?

[rowley5383]

Last summer I inherited a 1974 DUO Ranger 15' Tri-Hull with the original 1974 Merc 650 (65hp) outboard motor. I dont know a whole lot about motors so I had a buddy go through it, he was amazed. All it needed was an impeller pump in the lower unit. (has not been on the water since 1985) I finally took it out about 2 weeks ago. Runs great, but seems to go a little slow. Maybe I am wrong and thats all she has, but I would think it would be faster. ??? If anyone knows about how fast it should be going, please let me know so when I take it out next time I can compare it with my GPS. PICTURES TO COME SOON OF THIS ALL ORIGINAL BEAUTY

 

[miichael18]

Re: 1974 Merc 650. How fast should I be going?

depends on how heavy the boat is and what pitch prop. 15ft fiberglass boat? id say 65 hp your prob looking at 29-35 mph??

i got a 16ft fiberglass tri hull with 70hp evinrude and runs 28-31mph with my fishing gear and bait tank.

 

[rowley5383]

Re: 1974 Merc 650. How fast should I be going?

thanks bud, here is the link to what my boat looks like. it is the second one (yellow) this is a 73, mine is 74 but they didnt change any http://www.gjenvick.com/BangorPunta/Duo/1973-Duo-Ranger.html

 

[miichael18]

Re: 1974 Merc 650. How fast should I be going?

looks just like my boat i have a 1974 Dixie walk thru windshield 16ft. mine is rated at a 90hp max and has a 70hp.

 

[rowley5383]

Re: 1974 Merc 650. How fast should I be going?

miichael, got any pics of it?

 

[miichael18]

Re: 1974 Merc 650. How fast should I be going?

heres a old pic i found

 

[rowley5383]

Re: 1974 Merc 650. How fast should I be going?

sweet, i am uploading pics now