- Electric gauges VS Mech. Gauges????
- How to Identify my motors ???
- Lab finish props
- Leak-Proof Drive Reservoir Caps???...
- 502 water temp
- seawater impellors again!
- 454 to 468 advantage
- Cometic Gaskets
- Very long exhaust question
- prop testing procedure?
- Rpm and Horsepower limits TRS?velvet Dr.
- electronic ignition ???
- Boost didn't drop?
- More drive ??
- 502 MPI problems
- Battery Rundown
- Aftermarket Pulleys & Scat Crank?
- Gaffrig Red-Line gauge failures
- Help with my Vibration
- Fuel Tank ?
- Dumb q about speedmaster drives?
- Oil Pan bolt torqe?
- Props
- Oil Filter for HP500EFI
- Calling all cigarette bullett owners
- Mercathode.... Should I pull the plug?
- NKG Source ?
- vortec +ariz. speed and marine kits?
- MEFI3 Stock 2001 502 Fuel pressure
- T-Stat ?
- porpose problem
- props again
- which procharger???
- changing valve springs
- Spark Plugs
- Water Pump
- Outdrive leaking
- DYNO Results
- K&N filter system
- mercury dist. cap for 1998 502 efi?
- trailer brakes dragging
- 98 454Mag questions on HP upgrades
- Bottom paint/coatings
- pulleys
- EFI computer memory?
- Plumb Perma-cool Thermostat
- How fast will it go?
- imco shorty
- Hydraulic Steering Question
- Back on the Dyno
- Re rigging a 30' Oceanpacer...
- out drive lube leaking
- 500hp valve adjustmens
- Houston Propeller RULES!!!!!!!!!
- How do I post pics of my boat on OSO
- No Spark
- acceleration of a 2-stroke engine
- Another Prop Question
- Stereo problem
- Max Hp for Alpha & Bravo
- speed master #3
- Help quick...No drain pug in lower unit!!!!!!
- Keel Roller
- cam selection
- Adjusting Float Level
- HP500EFI's at 200 hours: anything special need to be done?
- Question for Air Cond. techs
- Holley 850?
- FireRing Gasket? Merc Manifolds
- What sealant to use? K-Plane to transom?
- adding shore power
- hp500 valve springs
- Mud ingestion ? . . . lo-water pickup
- 454 Mag Intake Manifold
- Whipple Stage 2 Kits
- Shorepower question
- mercruiser 525 sc install
- Galvanized Steel
- Merlin heads on hp500efi???
- Lexan cover sheets
- 2001 454 mag
- Paging Scott72
- 500efi's How many hours can they go for?
- TRS steering problem
- any electrical whizzes out there?
- Stainless/Braided Fuel Hose & Fuel Pressure Guage
- drive showers, thru hull exhaust, oil
- Thru hull tip sealant
- Crossovers
- bravo hinge pin
- Running LEAN
- Drive Question..
- Bravo 3 corrosion problems-long but worth it-
- HP 500 Plugs
- Gear Ratio / Prop Pitch Question
- Need help-can't get over 4400 rpm after upgrades
- bravo 1 gear set change ?
- nortech 38
- Cool Fuel ?
- K-planes not working
- Help Quick!! Gapping plugs and can't find my gapping tool!!!
- Adding cup to a prop...
- Changing fluid in Bravo I
- 32 Fever - Captains Call malfunctioning
- Trim-in-Handle switch problem?
- Can I add the standard water intake holes to my LW pickup drive??
- Can an intake manifold be "decked"
- Water pump bypass
- Where's my A/C?
- props with a 1:36 gear Bravo 1
- Trim Gauge
- smell of synthetic oil
- Prop pitch, speedometer
- Cavitation plate for bravo.
- Lifter noise and oil weight/qty??
- Gimbal Bearing Replacement
- Rotating engine by prop??
- No Fuel Pressure
- Trim, blower and bilge pump problem, any ideas?
- Drive couplers don't need no grease!!
- labbed prop vs exhaust system ?
- help! cracked heads?
- Power Steering
- alternator noise[bearing]
- Mich noise level ?
- TRS shimming questions
- Intake Centerline Position
- Changing to new style exhaust shutter's... WTF?
- vortec superchrger ?
- New member of the broken drive club..Need Advice Quick!
- EGT and Fuel Return
- Adjusting valves with engine running?
- Zincs for Kaama
- Engine flush valves
- JE Pistons compare to SRP (75F)Pistons
- Oil Pressure Switch Please help
- Checking Injector
- Effects of not enough timing advance @ idle
- 454/502 Mag MPI (Gen VI) Replacement Camshaft
- Correct way to time a TB 5 for max performance?
- AN fittings angle
- mercruiser 525 sc
- Revolution 4 vs Mirage plus
- Mechanical Fuel Pumps
- How to refinish Kiekhaefer controls?
- Diesel in Gas
- Imco Valve covers
- Octane for 525 sc's
- Embarrasing....Need SBC Firing Order
- 502 Identification
- What kind of engines do I have?
- Corsa Muffler removal with 5200, Sucess
- Question for MBAM, or anyone who knows...
- I'm relocating my oil filter/question?
- SSM III-IIIA
- Trouble starting 496 Mag
- Anybody thrown a rod? What to expect?
- Autometer needle
- 502 carbed spark plugs
- what spark plugs on 454mpi 2000 385hp?
- Pyrometer's
- 35 Fountain Help
- Yamaha drive conversion. to Merc ?
- Weber Carbs
- Fiberglass Nose Cones TRS?
- Kaama Surface Drives Slow to Plane
- Exhaust Risers
- 502 File Fit Rings
- Dumb question about engine building?
- Battery charger / maintaining
- Gas Tank Vent Question...
- Electric Fuel Pump
- K&N Oil Filter Application?
- zinc based primers
- Low H2O after pump change
- Fuel Pressure&Oil temp Sensor
- Gelcoat spray gun
- Carb to EFI conversion questions?
- Diaphram Bilge Pumps died again
- Fiberglass cutting
- Increase pitch or add a blade?
- What HP will Merc stock exhaust support on a SBC?(Paging Dennis Moore)
- Merc 600sc?????
- best place for trailer brake parts
- 500efi,where To Tap In For Water?
- Hot spots in headers
- Outdrive Oil
- Crossover vs. Circulating Water Pump
- Twin Outboard hyd steering?
- HP500 Mystery
- Vibration issue at 3000+ RPM's
- Bravo XR "minor" particles on drain plug
- Oil Pump Question
- 502 merc
- royal purple
- Best Hull support location from boat lift bunks??
- trim ring gaskets
- engine pulleys
- big ci bottom end
- TRS to SSM3???
- Turning motor by hand-trouble signs?
- rust in exhaust ports
- X Dimension
- Oil - Synthetic vs Petrolium w/HP500's?
- Stern lifting vs Bow lifting
- Hyd. Steering A Special Thanks!
- Drive Corrosion
- Gimbal Ring Repair With Stainless Swivel Shafts
- No Water temp???
- [B]HELP PLEASE[/B]-EGT dropping off #2 Cylinder -
- Stainless Hose Covers
- revolution marine exhaust
- Lab Finishing props ?
- Boat wiring color codes (edited) PRINT THIS OUT!
- How much extra HP to spin and IMCO drive?
- gel cote coloring
- Houstonprop
- Powdercoating?
- $$ savings on merc. anodes!
- Who are the Best Supercharged Engine Builders?
- exhaust tip silencers
- Hydraulic Steering Remote resevoir
- Question about Mercurys 900sc
- Engine is on the Dyno!!!!!!!!!!
- How to keep Aluminum from Coroding
- OSO Discount
- More stereo questions
- Paint for gauge rims
- Opening-up exhaust holes in transom
- Gen. VI Cam??
- Torque Spec For Lightning Headers?
- Yamaha stern drives?????????
- Crank trigger pickups
- Getting the boat off trailer
- Stereo Amp question
- Aeroquip, Earls or Russell Fittings
- blower shop 250
- 1987 260 mercruiser info needed
- Cd Players In Boats
- Dyno Abbreviations
- Saltwater Questions
- Thermostatic oil filter adapter
- Speedmaster #3 to #6 drives conversion
- Never winterized!!! Now what should I do
- upgrading fuel lines?
- helm parts question???
- Bleeding power steering Dos and donts
- DUI vs MSD Ignition
- aftermarket manifolds
- 540 bulldog
- Leaky Water Pump
- Alpha steering, what wears?
- HP500 cam choice
- CMI Problems
- Help! Pilot bearing - Do I need it?
- Cam ?
- Blower ?????
- max hp to torque range of stock 502efi
- aluminum vs stock heads and intake?
- Prop ?????
- Oil Filter Orientation ?
- Leaking drive
- What type of water pickup to use?
- Question for Quadrajet gurus
- paging mr whipple
- Water Temp Gauge Accuracy?
- efi procharger/vs/carb blowershop
- Plug wires, yes I did search before posting
- HP 500 Carb Upgrade to 650HP
- 4 Blade prop testing
- Water Pressure sender location
- Aeroquip Socketless Hose
- 496 Superchargers?
- OT 99 Silverado having trouble firing when cold
- imco extension box?
- Titanium Retainers
- Loctite Threadlocker Removal?
- Hour Meter connection
- Stainless risers ?
- Oil Pump HELP!!
- Paging Dennis Moore.......
- Engine Height
- Anyone running EMI switchable mufflers?
- Bravo Drive Rotation
- Ehaust tip flappers
- Loud exhaust tips
- Dristrubitors...
- Naca vents?
- What is the Difference between MCA and CCA on Batteries?
- Tune up specs for 454 Mag
- Removing entire drive & ginble?
- Help-shift cable installation
- MSD box and buzzer???
- steering
- Drill out Low Water B1 = DWP?
- Need help finding Mercruiser drive tools
- Duel carbs on N/A
- Rocker Arm Stud Sealer/Thread-Locker/Aviation sealant or nothing
- Baja Help!!
- Oil coolers
- Gaffrig tach question
- Electrical Problem - Ignition???
- Help what year 502 MAG??
- k-plane part# question
- Edelbrock heads
- Who can Identify this power amp?
- make a 502 a 500hp
- What guages should EVERY boat have???
- Fuel Pick Ups
- I Blew a motor...
- Drive Oil Change Pump
- exhaust ?
- Won't shift out of neutral!!!
- 502MPI problems, FYI
- bravo exhaust cover plate
- Temp Gauge
- XE256 camshaft
- Hydromotive intimidator Quad 4 vs. mirage plus
- What direction to go?????
- HELP - 500EFI cuts out
- 496-Motor 375hp or 425hp?
- converting to transom mount water pickup ??? Any true advantages????
- Advice needed on salt water use
- Hydraulic roller lifters, to pump up or not?
- A question for Dustin Whipple
- Low oil pressure??
- Plug filter bypass?
- First run?
- how far can I bore my 502
- 1st Run Of The Year, 502 Problems
- De- winterize boat?
- Merc 1050 gone?
- Checking Engine Hours
- "990" & "188" BBC Heads
- risers stainless aluminum ?
- PCV valvequestion
- 502 Mag Hours
- HP 500s - How many hours before valve job is required?
- Alpha I Propshaft Replacement
- Another good parts dealer
- Chiller for NA motors???
- Need shop to make mooring cover
- Torque spec for intake on 454 MPI
- harmonic balancer
- Type of exhaust you use on dyno
- Paging Dennis moore
- Procharger Dealers...
- Stiff power steering—control valve?
- impact of backpressure with silent choice
- Popping, Backfiring, Catching on Fire, Need Helppp
- gauge opinion
- Merc 496 Exhaust
- Prop Shaft Cover Help??
- Trim limit spacers for XR drives?
- OT: Alarm and remote start wiring guides!
- Bravo One gear ratio ?
- Which Spark Plugs work better?
- 500EFI whipple engine stumble
- Intercooler Wanted
- Custom Dash Pannels
- Custom fuel lines
- cutting bravo 1 lower
- No Mar Screwdriver
- Oil Pump for Gen 6 502
- Maximum Hydraulic Pressures
- Moisture issue
- TRS HYdro CYLINDERS ?
- teflon
- Engine compartment cover lifter
- 3 Blade vs. 4 Blade
- Bravo Outdrive Alloy
- 502 Electrical Problem
- dirty transom?
- Replacement camshaft for 502 EFI
- twin outboard v-bottom setup
- kAAMA Steering
- Oil temp senders on Blue Motors
- What temperature is safe?
- Transmission Fluid Leak, Can Not Find Cause?? Long
- Hydraulic Steering Resevoir Bottle
- Leaking intake valve
- Exhaust plumbing
- How To Remove Corsa Silencers
- Msd 6m-2
- 502-Mag-Mpi Plugs
- Circulating pump question
- reversion aftermarket exhaust ?
- 28 Warlock SXT Cat project
- '88 Donzi Windshield???
- Procharger M-1 or M-3?
- Which engine would you pick?
- Propeller Repair
- Building a new motor
- What model Procharger for small blocks?
- ? about merlin heads
- Where the heck is the fuel regulator
- Powdercoat Removal
- Removing a Bravo 1 outdrive for paint
- 7.4MPI pro charger questions
- prop pitch
- What is a 525
- Still looking 800sc belt tensioner and
- Sea Strainers...Where
- Supercharger Shootout
- Another SC project getting close....
- B-max lower unit nosecones?
- blowers, whipple, etc.
- Question - intercoolers
- Deep Cycle Batteries
- What prop do I use?
- Spring maintence..pun intended
- Foot Rest retrofit
- Merc 4 blade props
- 800sc Valve Springs
- Lost thread Gill with Silent Choice
- Appling Decals
- Exhaust tips and the Water Line
- Cool TCM project on a 38'SC in Powerboat
- Desktop dyno
- Cutting holes in fiberglass
- Polishing SS
- Supercharging smallblocks
- HELP - Trim Pump Wiring
- Nosecones On Xr Drives
- cutting carbon fiber panels?
- Can HP500 Dart Intake be run with Lg Oval Heads?
- Closer to Dyno
- BlackHawks vs. Bravos
- 502 mpi fuel pressure( how to check)
- Need Help
- Does propslip make you go faster?
- Free ITS from Merc...
- Hydro- trim pump
- Are we missing some threads or what?
- Where to put each battery? L or R or
- Master Lube Oil Pre-lube
- gil dry exhaust ?
- XR or XZ
- Changing from Alpha to Bravo?
- Corsa Quick & Quiet Plus?
- Merc Silent Choice w Gill
- Tomcat! Hows it going?
- Gimbals & bellows
- Lucas D3181AA Injector Needed
- A Marine Dealer with INTEGRITY !
- Paint ????
- 575 SCi blower pulley change ??
- Ignition Wire Sets
- I got a question!
- compression/ leakdown test w/ engine torn appart?
- CMIs on EFI motors
- Need 50 more HP out of my 2 496/HO's
- Injector Flow
- Corsa exhaust question
- Prop selection
- 177 or 250 and fuel supply
- skater 28 W/ twin 2.5 Prop iNfo.
- Anyone familiar with Merc 454/340hp?
- Help with trs drives, and bw velvet drvies
- Longevity of aluminum heads-raw water.
- Imco vs Stainless marine
- Sidewinder Outdrive Stabilizer???
- Cool web site
- 502 Timing
- Add on external steering?
- Another Poll: Which Synthetic Drive Oil Do You Use?
- Distributor Cap & Rotor Gen VI 502EFI
- engine paint
- Best prop for Baja 29 Outlaw
- speedo?
- DesktopDyno users find my mistake
- Oil pan drain kit
- Trailer Galvanizing
- hydraulic steering
- Warning alarm and Hour meter not working
- HP3 8100 motor ??
- Changing Heads?
- merc. its system question
- oil temp gauge?
- Engine Pre-lubers?????
- Predator 4 blade props
- MPI compatability
- 6.2 Merc modifications
- any sbc guru's out there?
- Merc 525SC belt gear ratio
- Fuel Tank Selector switches
- Crossover Vs water pump
- D.U.I. dustcaps (H.E.I.)
- The RIGHT WAY to do this!!
- cheapest way to increase hp on 454 mag
- kiekhaefer shifter lever effort getting stiff
- Need help with ignition 12V intermittent cutout
- Steering wheel hub ?
- Ideal Water Pressure??
- Use of swicthes on multiple tanks???
- Lobe CL vs Distance from exh valve
- bravo drives
- Need Good Used Parts???
- advice needed
- Someone desk top dyno me