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Outboard help??

Old 03-04-2013, 10:06 PM
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Originally Posted by JUPITER PULSARE
Greg, set back and motor height play a huge part in how well a small outboard V bottom runs. You should be seeing speeds in the low to mid 60's with a 21' v bottom and a 200hp. You should be running about 10-12" of setback and use a manual or hyd. Jack plate to adjust your motor height. You should also have low water pickups so you will retain water pressure as you jack up the motor. The Merc Trophy Plus 24 or 26 will run well on that boat/motor combo.
Your the man, if you ever have some spare time stop on by, I could use a quick outboard lesson lol
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Old 03-04-2013, 10:28 PM
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How do you gain 400-600rpms and no mph???? unless its trimmed too high.
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Old 03-05-2013, 05:05 AM
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,,

Last edited by Kurt Hamilton; 03-05-2013 at 05:22 AM. Reason: Double up
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Old 03-05-2013, 05:06 AM
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I'd say your almost certainly down a cylinder. Start with the simple things. Change plugs, take note of each plug as you remove it, if one comes out blacker or wetter than the rest then the pot that plug came from is the one not firing. If new plugs don't change anything try a new plug lead on the suspect cylinder then coil pack. If none of this works you could have a broken wire to the coil pack. Also check all connections for corrosion.i doubt you have a fuel problem, it sounds like one dead cylinder.
Not very familiar with the hull but even a heavyish 21' performance v should pull into mid 60's +.
Don't bother messing with props till your sure the motor is running properly. At a guess I'd say you could even go up a pitch or 2 with what you got. As mentioned the trophy's are a good all rounder, also a rev4, laserII or fury are good choices for your setup.
If the boats heavy a big setback will help the boat sit up and boogy however if you boat in rough conditions it will handle like sh!t.
Play with engine heights but remember high is only good until the boat looses its ability to carry its nose high under trim and un wet the bottom of the boat.
Just one more thing with the motor you have. They came with oil injection, if its still running it (you'll have a 10L caddy in the boat to put your 2 stroke oil into) I'd disconnect it (per mix the oil with fuel instead). Those oil injection systems on those motors had a tendency to strip the oil pump drive gear, the only warning of it happening is the motor locking up!
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Old 03-05-2013, 06:40 AM
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Kurt, thank you very much! The oil reservoir was disconnected and we are just running mixed gas/oil! Also I did check plugs and they looked pretty decent as far as I can tell, today after work I will be replacing them with new plugs! So you guys think I should be looking for a 14x19"? After figuring whether she's firing on all 6?
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Old 03-05-2013, 07:57 AM
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Check TPI setting. Throttle position indicator.
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Old 03-05-2013, 08:37 AM
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Gregg call me, still have all my notes from by boat, same bottom. Started with a 200 too. Was running low 70s
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Old 03-05-2013, 04:40 PM
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johnny could you pm me your number brotha?
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Old 03-05-2013, 06:23 PM
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Greg,

Johnny can steer you straight and I agree with his numbers. You're down on power. He and his father used to work on my boat for the previous owner and he's got tons of seat time in similar hulls with similar power. I'd suggest that a stock (and decent running 200) on your hull should be easily in the upper 60's.

Just replied to your PM too.

Tom
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Old 03-05-2013, 07:49 PM
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Thanks Tom! Now theres pressure
PM Sent Gregg
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