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Thread: Need more power 225 3.0L carb
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07-29-2015, 06:51 PM #1
Need more power 225 3.0L carb
Looking to get another 30+ hp be ideal. 95 3.0L carb 225 off shore series.
Im wondering how much I can cut the heads. Or what cc factory is I run 93 octane in it now but if I need to run 108 race gas I'll do it
planning on putting a exhaust tuner on it and rejet the carbs and possibly a 300 pro max ignition module.
Tha ks for the help in advance.
82 enchanter 225 3.0l merc 70+ Sold
81 Baja 16ss. 140 Suzuki 52.sold
86 Stephen stepp velocity 3.0L merc. #737
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07-30-2015, 02:02 AM #2Member
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Unless this is a drag race/ grudge race boat, I wouldn't do mods that require full race fuel. That sounds like it would be quite expensive to use a lot. Your goals.should be achievable with premium pump gas
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07-30-2015, 07:37 AM #3
Ok so keep compression under 160psi then.
And what cc are factory heads and what should I cut them too
82 enchanter 225 3.0l merc 70+ Sold
81 Baja 16ss. 140 Suzuki 52.sold
86 Stephen stepp velocity 3.0L merc. #737
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07-30-2015, 08:23 AM #4Member
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Contact Jay Smith Racing Engines. He cuts alot of heads on these motors. He will be able to point you in the right direction
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07-30-2015, 08:27 AM #5
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07-30-2015, 09:29 AM #6
I'm going to run 104 in the motor to be safe. I wanna run like 150-160psi. And anyone have the number for jay smith racing.
82 enchanter 225 3.0l merc 70+ Sold
81 Baja 16ss. 140 Suzuki 52.sold
86 Stephen stepp velocity 3.0L merc. #737
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07-30-2015, 09:34 AM #7
Is this the boat: http://maine.craigslist.org/boa/5122306406.html
1989 Hydrostream HST
1989 Actioncraft Flatsmaster SE
2006 Baycraft
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07-30-2015, 09:36 AM #8
That was my old boat. Sold the crack mate hull and now motor is on my 22 steve stepp velocity hull
82 enchanter 225 3.0l merc 70+ Sold
81 Baja 16ss. 140 Suzuki 52.sold
86 Stephen stepp velocity 3.0L merc. #737
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07-30-2015, 09:39 AM #9
You might want to note what you would like to get out of this boat/engine combo rather than just horsepower on the engine. Say, if you want to get a certain speed then list engine, mods, setup and hull. That way others can give you all kind of info to achieve your boat goals. Some engine and setup mods might be a lot easier and cheaper than going with am engine that requires race fuel.
1989 Hydrostream HST
1989 Actioncraft Flatsmaster SE
2006 Baycraft
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07-30-2015, 09:41 AM #10
This is a simple question asked. I want 30+ hp. On my motor.
82 enchanter 225 3.0l merc 70+ Sold
81 Baja 16ss. 140 Suzuki 52.sold
86 Stephen stepp velocity 3.0L merc. #737
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07-30-2015, 09:42 AM #11
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07-30-2015, 09:51 AM #12
Boat is setup fine. I just want more power.
82 enchanter 225 3.0l merc 70+ Sold
81 Baja 16ss. 140 Suzuki 52.sold
86 Stephen stepp velocity 3.0L merc. #737
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07-30-2015, 09:52 AM #13
Boat runs mid 70s now. It's a class 7 opa boat so I just want more raw power for turns and if I need to back out that I have the power to get there quicker to 60mph.
82 enchanter 225 3.0l merc 70+ Sold
81 Baja 16ss. 140 Suzuki 52.sold
86 Stephen stepp velocity 3.0L merc. #737
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07-30-2015, 09:28 PM #14
now correct me if i am wrong but 3.0L 225 hp's are '' O'rings '' heads I bought 300X heads instead of shaving the heads
Now I am in the process of adjusting the jetting on those carbs....they were .074 almost all around now I made them .076'' an increase of ..002''
will see this week-end if God is great with me.Last edited by dompie99; 07-30-2015 at 09:30 PM. Reason: add more things
Glastron GT 150 W OMC 140
Glastron GT150 w OMC 235
Hydrostream Vision with 2.0l 135
Hydrostream HST w 3.0L 225
I know two things that are infinite, the Universe and Human's Stupidity, although I am not sure about the first one.
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