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ContinuousWave: Whaler Performance
1998 Montauk 90hp Merc
|Author||Topic: 1998 Montauk 90hp Merc|
posted 08-29-2003 08:44 PM ET (US)
My 98 Montauk has a 90 HP merc 2 stroke the problem is i can't
get any speed out of it im lucky if i get 32 mph . I was getting 38- to 40 mph sonetimes faster . I changed the hub on the prop no change i put a SS Raptor Prop 13-1/2 - 21 it ran so bad I took the prop back. The old prop is also a 13-1/2-21.
Just can't figure out what the problem is. This boat was so fast for a 17' it was scary at top speed.
posted 08-29-2003 10:02 PM ET (US)
Lobo5656, I don't know how much difference there is between your 1998 Merc 90 and my 2001 Merc 90 but, I was hitting around 45 mph with a 19 pitch prop on my Montauk. Might want to try changing your prop again. Brian
posted 08-29-2003 10:36 PM ET (US)
Anybody esle with a merc 90 on a Montauk what prop are you running.
posted 08-30-2003 06:51 AM ET (US)
I'm assuming that you have the current 84 cubic inch Merc 90 and not the 71 cubic inch version. My last 17 (a Newport model 1980) with a Merc 90hp (1996) had a 20" pitch Quicksilver Hi-Five SS prop and would swing it at 5600rpm and somewhere between 45 and 49 mph. Clark ... SCN
posted 08-30-2003 10:05 AM ET (US)
Sorry i put the wrong prop size in my first post it"s a 13-1/4 by 21
posted 08-30-2003 11:14 AM ET (US)
I have a 1992 Mercury 3 cyl 90HP on a 91 Montauk. I run a 13.25 x 19P and hit about 43 at 5600. My motor is up two holes.
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