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Engine Technical Discussion This is our non outboard engine related technical discussion forum. If your boat is powered by a Inboard/Outboard, Jet drive, V-drive, or even something else, then this is the forum for you! Topics include engine repair and maintenance, modifications, drives and gearcases, electrical and electronics, etc. For technical assistance related to outboards, please use our outboard tech forum.

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Old 09-30-2019, 08:36 PM   #1
Cat320lc
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Default 283 checkmate 2000, how to make it run 90,

What do I need to do to make it run 90 or more, thinking about get getting imco -2, what prop, has 830 hp now does 80
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Old 09-30-2019, 09:24 PM   #2
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Call 419-529-4446 and Kunkels Marine will give you great information.
Good luck-


https://m.youtube.com/watch?v=6gHBAWo47gA

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Old 10-01-2019, 08:00 AM   #3
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What do I need to do to make it run 90 or more :
A lot more $$$$$$



Give us more info on what the setup is now, cause honestly, with 830hp, that thing should be going a lot faster than 80.


From my experience, and a lot of talking with the Jason at the afore mentioned Kunkel's Marine, don't waste your money on a -2 lower.
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Old 10-01-2019, 04:20 PM   #4
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A lot more $$$$$$



Give us more info on what the setup is now, cause honestly, with 830hp, that thing should be going a lot faster than 80.


From my experience, and a lot of talking with the Jason at the afore mentioned Kunkel's Marine, don't waste your money on a -2 lower.
A single 283 is a lot of hull for a single. Friend had I think a 1996 that he dropped an Ateco 540 (~600 hp) cu in exchange for his HP500 and it ran 72-73. Was a 65-67 mph boat with a HP500 FWIW.


Consensus says $$$$$$=HP's to go 90 though! Good luck!
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Old 10-02-2019, 10:14 AM   #5
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30 p prop 4 blade bravo
5400 rpm at 80 mph
6 psi boost
3 people on boat
3/4 tank of fuel
283 2000 checkmate
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Old 10-02-2019, 11:57 AM   #6
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The Gold standard for a 283/300 was Bill and Monica's all white single 1500Hp twin turbo /#6 drive on a extension box. If I remember correctly he ran that boat to 115-117mph. You can find posts and pictures about that boat on this Forum. He now owns the only Checkmate 43 Punisher and sold the white boat(I think without the big power)

At 80mph I suspect you are 5... maybe 8mph short of what your boat is capable of with 830hp. I don't know if you need setback or a short drive or a different prop. But as has been suggested Kunkels Marine has done a lot of rigging for speed and testing on the 283/300. If they can't get more out of what you have, then you need more HP.

Hope you find success.
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Old 10-30-2019, 07:59 PM   #7
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Originally Posted by karzrus View Post
The Gold standard for a 283/300 was Bill and Monica's all white single 1500Hp twin turbo /#6 drive on a extension box. If I remember correctly he ran that boat to 115-117mph. You can find posts and pictures about that boat on this Forum. He now owns the only Checkmate 43 Punisher and sold the white boat(I think without the big power)

At 80mph I suspect you are 5... maybe 8mph short of what your boat is capable of with 830hp. I don't know if you need setback or a short drive or a different prop. But as has been suggested Kunkels Marine has done a lot of rigging for speed and testing on the 283/300. If they can't get more out of what you have, then you need more HP.

Hope you find success.
We actually ran 120 in the 300 when we had the engine set at 1725 hp.
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Old 11-02-2019, 01:05 PM   #8
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What do I need to do to make it run 90 or more, thinking about get getting imco -2, what prop, has 830 hp now does 80
Tow it behind a big ass truck!
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Old 11-14-2020, 12:10 PM   #9
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Our 270 BR runs right at 79-80 with a 700 HP AETCO 540 and weighs a lot less than a 283. It's going to take some serious HP to run 90, a boosted engine for sure.
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Old 11-15-2020, 07:55 PM   #10
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This is an old thread and the OP has likely moved on.

That said, he did indicate 6 psi of boost, he could possibly turn it up if it is more HP that he needs and to get another 10mph. He probably needs some set up adjustments and more HP to get all 10 mph.


80mph in your 270 is moving well with a 700 HP 540cid and it's a great looking boat as well. But you might find some speed still in it with the right set up too?
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