View Full Version : Technical Discussion
- More HP in a 2.5 280
- 3.0 Merc Lower?
- What Steering Cable is This?
- Lower Unit Rebuild
- Running something other than a stock L/U on a Yamaha 200
- shimming a 1350 lower unit
- reprogram
- fuel conditioners
- V-king handling, what am I doing wrong?
- sportmaser water pump kit
- Ye-olde` Bridgeport Project
- What's the story on "an oil injected Merc can't sit more than a few months"
- What psi does hyd streering rams operate at?
- Supercharge a two stroke?
- Does Anyone Know What Is An Acceptable Oil Consumption For A 250 Four Stroke(suzuki)
- Difference in 2.4 head gaskets? (big holes vs small holes)
- Help with 1988 150SR4
- E-Tec with powervalves?
- 300X problems
- 135HP optimax head gasket
- Alisyn ProGear 21
- 96 200 efi stuck at 5200rpm
- What Is Torque??
- Over propped???
- Shoul 4 Stroke Engines Consume Oil
- 50 HP merc
- What year and displacement - Merc V-6
- gear oil BLACK but not burnt what to look for
- O.M.C. Looper cranks
- Ficht To Carbs??
- rebuild 300 promax, upgrades?
- Dropping RPMs H E L P !!!
- Not your every day modification .....
- Analog ECU to Digital ECU
- How do you drain fluid on an external tilt pump?
- Need advice with prop change
- pic or blue print to stv ski bottom...
- Propshaft Seal
- Mercury / Mariner Model # ?
- 1988 175 Suski CDI
- Second Effort (Gold) Looper Flywheel Q?
- 21 daytona motor options???
- Mariner Lower Unit
- 1988 Merc 150 SR4 ELPTO Lower Unit
- Need Gear Change Advise
- 1988 Merc 150 SR4 Horsepower
- Optimax - steel sleeves or nikasil?
- Plugging top holes in Lower gear case
- Mariner Shaft Size?
- Center Horn Differences
- Dig. tach problem
- Mercury serial # web site ??
- V8 Fuel Pressure Warning Light
- Leakdown %
- 300 pro max vs. 300x
- Gearcase Question?
- OMC Parts Diagram/ Manuals Online??
- Electric Fuel Pump Wiring
- Yamaha V6 Cowling Interchange?
- Optimax 135HP Oil
- Starter woes
- Bench test for Merc Switchbox?
- 2.5 rods which is best
- Mercury outboard year
- Merc. compression ??
- 1997 250 efi help
- Black Max Exhaust
- best steering
- '88 Yamaha Excell Won't Go Over 1900 rpms
- Combination gauges
- Evinrude 130 Looper Hose Routing ???
- Water Pump Housing
- Merc 3.0l, 20" - 25" conversion question
- The LEARNING process continues
- Power loss at WOT
- 175 Merc Bore job
- OMC v6 150 Block Air Leak - Advice Needed
- Bolt Torque settings for a 2.5
- throttle cable??
- Mercury Gasket ?
- need some help
- is the rubber 4 petal reeds and block better then 5 petal boyseen reeds?
- Any idea on the year
- Bob's alien cowl
- Merc Kill switch- normally open or closed?
- Velocity Stacks and Jetting ? ?
- 21 Superboat Foot Throttle
- EFI Question
- Displacement
- 280 Alternator
- COOLING QUESTION 275hp 3.4LITER
- Mk 6 ssm gearbox
- 2.5 Tuners
- Remove dual steering bracket V4
- 175hp merc? or magIII
- 235 weight?
- piston specs
- new 2.5 project , 40 amp charge system, remove it ??
- Billet Heads
- ECU connector plug grease??
- blancing a 2.5
- 40 Amp Charge System, parts
- 1994 225 Merc Shifter help
- 2.5 or 3.0?
- etec 2.6 200 hp vs carb eagle question
- bleed line size?
- Combination Advice
- 2.4 ecu
- 240 efi Sportjet
- detwiler jackplate
- transom question
- BP Bridges
- water pressure gauge hook up
- Break In OMC
- Speedmaster questions
- Building a 2.5 - whats the best trim to use?
- help? 2.5 -200 hp Merc spewing thick oil out of prop
- Trim Computers???
- hydrostream panther info
- 22' Daytona
- 260 problem
- pistons and rods
- Adapter Plate Question 2.4 to 2.5
- connecting rod question
- I-line timeline
- 175hp sportjet
- STV Euro 1/4 Mile ET
- Oil mix and removing oil injector HELP!~~
- looper trouble
- 2.4 head cc
- switch boxes
- switch boxes
- Hot Foot Pro Top Loading Cable?
- Mercury 1998 250 Loading Up!!!
- trim unit problem is driving me nutzz
- Suzuki???
- 2.0 merc bore size
- what is the best carbs for a 2.5 mercury??????
- gear case ratio's
- ecu??
- 3.0 litre cowling won't stay on...
- Mounting Bolts
- yamaha excel (hydrotec or boyesen reeds)
- promax onto 2.4 OS mid?
- Merc 3.0L Pistons
- What's the most economical and reliable V-6...on a budget???
- hydraulic jackplates and steering clearance
- Cutting heads and Idle performance
- Looper trim question
- In the wather after 2 years...
- Fuel Pressure question !!!!
- 260 question
- Exhaust can purpose
- Fuel Pressure for a 97 225 Promax
- Merc 150hp heads on a 1995 200 hp?
- What year is my Mariner???
- 22 Velocity- Alpha to Bravo Conversion-HELP!
- Finish PH rebuild HELP!!!!!
- Baystar steering question
- Best Reeds for a 1999 225 3 litre EFI
- 223 Cobalt 502 Mag needs more HP.
- 300PM Workshop manual
- Electric Fuel Pump on 300X ??
- cle gear cases
- ID sticker on mid section
- MAD intake for pro-max
- power trim fittings
- Most durable, affordable, economical V6, Part 2
- Shorty 60 Deg V4
- 5 peddle spacer ....
- I need a 280 "JUNK" O ringed head
- Ignition wiring question !!!
- Engine Stand
- Do you use an anode skek or not??
- Yamaha v4 115 tuning help??
- High EGT #s ... What to do?
- 96 2.5 260 EFI Tach sensor?
- steering overkill?
- HELP ME! Smartcraft????????????????
- Mercury S/N
- a-6 and a-13 ecu's worked until the chips were switched
- sea star pro
- Mercury 300x Or Mercury 250xs
- Jetting, I've been advised Mr Rex is the man for this question
- 1994 Mariner 175 Magnum EFI // Mid Section Mounts Worn
- Anyone ever use a colortune on an outboard
- Has anybody powdercoated their carbs?
- 280 plugs
- Allisons composite transom
- propshaft seals
- 1989 Merc 150 XR4 Dies
- Question for Mirage experts
- Looper question
- Tohatsu 30hp and 40hp
- 1" Spacer
- Hmmm??
- 1988 XR4 what will saltwater tear up~!
- serial number?
- V4 Crossflow tried to burn down today...AGAIN - Any ideas?
- Omc Rectifers
- Looper wont start
- 2000 135 Johnson adjustment
- Could use a little advice on a 86 2.4
- 1990 Stv Ski comp setup
- 24v/12v up trim question
- Can the lift be limited on a CMC PL-65 hydraulic jackplate?
- Looking for alien cowl
- trim indicator
- Sea star question
- 2.5 or 3.0 litre
- compression Mercury 2.5 EFI Offshore engine
- Looper Adapter Plate
- 1991 2.5 with top guided rods
- Powdercoating question
- Which HP oil is best
- '76 Evinrude Hydraulic Shift Question
- Swapping a 25" with a 20" Drive Shaft
- EFI or Carb for HP
- Waterproof fuel vent??
- anyone have a part number chart for 2.4 2.5 carbs
- Drop ons
- ECU Identification
- Non-feed back system needed for GN boat
- CLE lower unit question !!!!
- Adding fluid to a Mercury trim pump?
- when di merc go from 2 piece to 1 piece heads??
- 300X Heads & CCs
- Sportmaster versus Torquemaster load carrying
- Smoothing prop edges??
- Oil Injection Elimanation
- Shift controls
- Porting question.
- Dead Hole
- 89 200 rude heads
- Holding LU while torquing
- merc 500 quandry
- power pack question
- Attn: OMC Gurus
- How long should it Take??
- max rpm ?
- 24 Volt Trim on Production Trim System
- found out why my Bridgeport starts and idles crappy
- Ok guys lay the bad news on me
- How to clean an old fuel tank????
- Trim pump question !!!
- 88 xr2
- 225 to 250 ECU anything alse needed?
- Extensions on jackplate?
- 25 hp Mariner/Yamaha affiliation?
- portalift bracket info?
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