- Looking at 94 29 foot scarab just want some input
- Which is better?
- HP 500 Carb to 525 EFI
- Uh oh. 106db. How to get to 86? Or at least 90?
- Windshield Trim
- 24' obsession torent
- Gotta vent ... literally
- 454/502 harmonic balancer
- Mechanical indicator on the drive...
- Fuel Pump & Oil adapter
- water pump/blown engines???
- Smaller family boat?
- Head studs hitting IMCO manifolds
- McLeod Booster Failure
- 500EFI Whipple idle problems
- Livorsi ll gauges
- 454 Mag MPI HP rating?
- MEFI 1 Tuning
- No spark from coil - low voltage across leads
- depth finder install
- Weird temp/gauge issue going on
- what intake you guys running on big blocks
- boat carpet
- 454 EFI VST Fuel Pump anybody?
- Keeps Throwing belt...
- Does 502 have rectangle-port heads ?
- Driving me nuts (condensation?)
- Ilmor questions...
- Wiring for tab pumps
- Trim control switch options??
- 454 chev build
- Scan Tool???
- Where is Dave_N???
- 500 efi erratic idle
- engine lacking power
- lighting headers good or bad?
- One side of 496 leaner than the other-
- K planes and trim cylinders.
- Engine oil pressure issue... opinions ?????
- Whats the correct timing and spark plugs
- 1 Drive stuck up
- Water in my TRS trans
- 525EFI Have Knock Sensor?
- Help ID'ing 6.2 MPI
- Cool lookin PFD's
- Weird stain on Vinyl HELP?
- new/rebuilt engine -new oilcooler=water oil mix
- 30amp to 50amp adapter marine vs rv
- steering problems
- Latham Steering
- Hatch actuator not working!!!! HELP!!!!!
- wiring diagram with sensor for 01' 496ho
- Engine starving for fuel?
- Gas Guage Doesn't work
- Trim Sender / Gauge All over the place
- Spark Plugs: What is everyone using?
- Need a marine surveyor in Palmdale CA
- Machine Shop recommendations in S.D.
- 525 EFI slow response??
- 496ho Lean burn
- very small water leak can i
- new 496 head gasket issues
- Unknown cam specs
- Tach does not look right??
- 454 Mag EFI Cyl Head
- SBC getting hot at high rpm
- 300x vs 300xs comparison
- hp500 ideling high
- Drive / coupler alignment issue is kicking my ass!
- Strainer Lid's
- 700sci loading Up
- old 502 EFI MPI Tuning Kit
- Tachometer calibration
- 496 Mag Black Soot on Transom Lots of it
- Help Diagnose 525 EFI Stutter
- Stagger stringer setup?
- new 502 engine.
- Orange Fluid on Blower Manifold
- Blue Hp 500 vaccum line question
- Temp sender???
- Garboard drain repair
- Cyclone Replacements
- Trying to standardize fluids between multiple boats (Volvo & Merc)
- thunder bolt IV timing questions
- 502 not pumping water out exhaust even with ears on drive
- Air fuel ratio...wet exhaust???
- Swapping steering
- Loss of Power at WOT
- 540 build help
- RPM differential
- What pitch should I use?
- Muffler adapter
- 1998 454 magnum flywheel problem????
- Raylar Kit Install for 496 HO
- 211 libb speed
- Is there an easy way to check Octane Level
- fuel ?
- fuel ?
- Mercury 525 EFI Water Pressure?
- 496ho alarm (i have scanner)
- Hot Engine Oil
- I think I finally pulled the trigger!!!!
- bad performance Wellcraft 233
- Throttle cables
- Knocking noise possibly in driveline.
- #1 cylinder problems
- Where to draw power for electric choke and fuel pump?
- Do you have to have the PCV in the intake HP500?
- Any Corsa 4 wire Solenoids for sale ??
- new holley carb plumbing
- Help Sync'ing Engines/Throttles at Cruise
- 557 vs big cubic inches
- MAP Pressure??
- 454 mpi idle vacuum
- Mercruiser 500 Hp Bulldog
- waste holding tank
- Muffler Question
- Hp 500 Fuel Injector wiring
- 7.4 mpi with 454 mag cam question
- Center console advice concept, glasstream, etc
- Crossover bypass routing?
- overheating then hydro-locking engine
- 496 HO Plug Choice - Confirm please
- Engine temp question
- 525 hesitation?
- Trailer Brake Issue
- best high speed bimini ?
- changing throttle cable throw 31 sonic
- Anyone using Cheap Ebay HEI distrubutors
- water temp all over the place
- Switching to a electric fuel pump..got question..
- Heat exchangers
- Scat 9000 Steel Cast Crank
- power steering help...
- fuel gauge
- Tachs Erractic
- K-Plane help
- Just installed a 496HO in an Formula 242LS, and the tach does not work?
- Amp
- New 540 with crossover hotter on starbord side
- 700hp scarab
- motor will only rev to 2300 RPM under load
- Dana Marine 4" s/s exhaust tips
- 496 mag ho rpm
- power loss--Hard starting after sitting for a hour
- 1987 formula 242ss speed problem.
- 525 Issues?
- Trim Tab Problems
- ? reprogramming old MEFI 1 and 2 ??
- Riser to ex tip mismatch - how far can hose flex?
- 496 raw water pump problems
- 454 loss of RPM
- water temp / oil temp??
- XRP fittings source
- coupler questions.
- Ignition Issues
- Need Help, old 502 EFI only 4950 RPM, rev Limit ?
- Powerboat shows on TV
- HELP. Backwashing 496 after impeller replacement.
- Jetting advice needed for 489 with Holley 800
- Need help with my gas hog(boat)
- CRT cordless rotary trim.
- 2000 Fountain twin 502's which prop goes where...stupid??
- New Tach Going Crazy
- oil pressure sender
- super charger
- Oil pressure problem need some advice
- motor stumbles and stalls out
- Hatch actuator
- Lightning Headers Vs Gil Dry Exhaust
- Question about a dipstick
- Brovo 1 - Reverse Problems
- MEFI-1 or MEFI-2 Cost?
- Carb HP500 Oil Overheating?
- How do I drive/fly my new Tunnel? 22' DCB (Daytona) with a 500 HP i/o
- Bravo 3 - no forward gear, gets stuck in reverse.
- Converting from MercTrans to BW c72
- Tighten to yield bolts - Re-use
- Everything completely dead... HELP!!!!
- Loose Flywheel Bolts???
- thermostat hole
- Oil cooler repair?
- Help, trying to convert from crossovers to thermostats
- NJ engine builders
- Gen VI 454 mag base timing.
- removing painted stripes/logo's safely
- stainless marine and takin a big gulp of water
- Cover, Sunbrella or Hot Shot or ??
- fuel level?
- engine alignment with offshore mounts
- Flywheel Issues
- Having trouble with circ pump hose with RPM AirGap
- Prop,s
- CMI Header Temp.
- Keith Eikert Oil Pans & a starter that fits it? anyone have Experience?
- amp question
- new outdrive?
- DUI Ignition
- Intercooler plumbing question
- Trouble with electric hatch actuators
- 496 just makes a click?
- One side running hot
- outboard guys steering question
- New Altenator
- Star Marine Depot
- Proper place to show my boat
- TQ on a mercruiser 425 hp?
- Subwoofer question
- Anyone have the ability to convert oil filter part numbers?
- Prop Puller - Stuck Volvo DP front prop
- buying a winterized boat
- bellows install question
- 288 Sunsation.
- Viking Boat Lifts
- Innovate LM-2 integration questions....
- Engine hard to start when cold
- question about sea pump?
- 350 Mag MPI High Oil Pressure
- SS Raw Water Pump
- Gil manifold riser gasket
- Jetting for Supercharged 502
- oil dipstick with aftermarket exhaust
- 525 Slow to respond?
- 500 efi motor noise
- Weird electrical problem
- marine a/c what refrigerant type
- Help!! Engine Demon's!
- water psi bypass
- stewart warner gauges
- Converting from points to thunderbolt
- TRS bell housing oil cooler??
- Ignition Module Problem
- wtb conversion stuff for mpi to carb
- Thunder bolt IV timing question
- Battery question
- 525efi timing problem
- Idle water pressure hp500's
- fuel pump cam question
- What a difference the right prop makes!
- Engines dies when shifting, need help here
- best cheap stereo
- Bowtie Vortec Heads
- quick fuel 830 carb???
- Water dumps
- Advice please. 496 water intake blockage.
- Trim adjustment.
- Trim gauge not working
- windshield part
- fuel pump cam question
- What heads for my small block
- Instrument lighting
- 496 mag sea water pump
- GPS units anyone running a GPSMAP 640
- Oil Change Pump
- Problem with my TRS drives
- Lightning headers vs Gil manifolds / risers - pros & cons?
- Is 212* rating for Fragola Push-Lok hose sufficient for oil cooler line?
- Livorsi leaking
- Maybe a dumb question but hey?
- I need some replacement coupler info!
- 496 mag non ho rev limiter
- oil temp sender
- carb set up help needed
- 500efi serial number location help
- BEST fuild to run in BORG W
- need new motor...compatibility vortec question
- Rev limiter?
- water pick up
- What are the right head bolts for my set up?
- polishing lower unit
- mpi to carb conversion
- epoxy, gel, fiberglass removel from old tabs?
- Differences between a 350 mag MPI motor and a GM 350 HO Ram Jet engine
- Boat Bottom Hook
- BBC Gen 6 manifold gaskets ?
- Trim rings.......
- boat covers
- Lowrance HDS 7
- fuel pump problem
- AN fitting and routing help...
- portable a/c
- Need some Help on Sluggish boat Please!!
- 6.2 / 377 merc
- Battery Help
- Moisture
- Tuning software??
- Gen IV 454 Cam Retainer Plate?
- Water Pickups
- 525 water temp
- 496 oil filter
- CMI rope seals dripping water????
- Getting really frustrated!
- 89 292 Deck Graphics Opinion.
- GPS/ chartplotter NEED HELP!
- Testing an ECT sensor
- Water in Engine oil Please help
- Motors are back in!
- Livorsi DATA TACH
- Four stroke outboard question
- Whipple Intercooler water PSI
- Oil Change-- Dumb Question???
- Clarion CMV1 - Anyone have one?
- Weind 177 - Merc 525... 80 W 90 ?
- thunder v ignition
- Any Mac tool dealers on here?
- cold water cold air cold motor
- fuel additive
- Need a little more POWER!! Help!
- 502 re-power options
- Compression test results and Gen V 454 Mag / HP425 Differences
- suggestions on pwer ugrade wanted
- Twin Drive alignment
- Gold Digger
- valvetrain geometry check - do I need shorter pushrods?
- Donzi 38ZX Electrical Questions.....
- 2 BOATS, same price, different years, 525sc or 500efi need input
- gfs 10
- 330 Hp to 400 HP
- How to check fluid levels??
- New Boat trying to guess HP
- Help With Engine Id.
- Westerbeke Genset
- 350 Mag cutting out at WOT
- oil lines
- 525 oil change frequency
- Amsoil 5-30?
- Who makes the best labbed prop???
- emi vs stainlessmarine exhaust
- thermostat housing change
- K-plane pump switch wiring
- Whipple vs. Procharger
- Buying boat, need to confirm engine hours on "fresh" engine
- Stereo
- vortec head valve covers
- Thanks OSO
- Gauge Issues
- Which heads are better
- Back flow valve for innercooler
- 330 hp Stock Exhaust Manifold Swap
- merc engine wiring diagram
- Lake's near Dayton Ohio for test ride??
- Alternator Size?
- 454 build horsepower?
- fuel pump vacuum
- Opinion needed.
- Motor Rebuild ?
- Is this what I need
- 400' X 60 ' pole barn ?s
- Port side outdirve & K Plane pump, No Power!
- Removing scratches from my windshield
- hub kit
- Reassembly: 454 Mag Mpi
- Carb Spacers
- 500hp efi fuel psi
- Steering Centerline/ Crank Centerline
- Scorpion rocker clatter
- Alignment tool fo Imco box
- Mounting a Thru hull transducer 88 Baja
- Steering wheels
- Easy way to identifiy a 351 vs 302?
- imco lower
- Moisture In Oil
- Another one for ya
- Opening engine compartment w/ no battery!
- steering hub adapter??? Help
- got ripped off on some parts and machine work, need advice..
- Holley Carb choice ?
- gear lube reservoir alarm not working
- OSO timing out quickly
- 1.8 roller rockers
- Non skid
- My Header dilema continues
- Alpha rear engine mount bolts
- transom mounted water pick-ups
- Closed Cooling Heating Question
- Big Block Oiling Question / by-pass valves
- 489 with only 14 hrs compression #s
- McLeod Design?
- Mechanical speedo
- Looking for Bravo One X Decals
- Subwoofer box Dynamat lining
- Bolt removal - bellhousing to transom
- Propane Powered
- Someone Please explain this to me...
- need help 90 31' scarab excel stringer bad
- Any stereo/audio wizards out there...?
- boosted tuneups
- Muffler removal help, and NEWBIE to site
- 2 Warning Beeps on 496ho???
- Lenco's vs. K-Planes
- Race Pump fuel pumps
- Sea Strainers , Brass, Bronze or SS ????
- Fuel Flow Meter - HELP
- 292 Formula Fastech 400 + HP
- paging Fogducker..
- gps antenna
- Holley help/ twin 750s/5psi boost/roots
- Does anyone know where I can get two of these (pic)
- Put-In-Bay info
- manual fuel pump
- Solid Model of a Top Gun
- Single or twin fuel usage?
- Do Corsa mufflers cause any RPM loss?
- Stereo popping with trim adjustment
- Saginaw P/S pump GPM Flow rating?
- More prop testing and results...need advice
- Sea Mounted Fuel Pump Block Off
- Holley 800 vs 830 for 489
- High fuel pressure.
- CD Player remote question
- White chalky residue on exhaust manifold/riser
- Compression Ratio w/ 4lbs boost at elevation?
- Mobil 15W-50
- where to buy marine carpet
- Good place for rear seat/sunpad within 150m of Austin?
- Block casting number
- Water to whipple Chargers
- Scoop location?
- Old Volvo fuel pump
- Weird oil leak?
- 38 Fountain Port no power
- Water pressure sender
- PSI Blower Carbs
- 496 sea water pump question
- fuel in seawater fuel pump housings?
- 1999 HP500, MLS without surfacing?
- Engine shipping crates?
- Break in limiter - Verado 350 sci
- Low oil psi 454 500HP
- Need help with drive height
- Oval exhaust tubing
- Tapping/ticking noise
- Engine ticking
- supercharer compatibility????
- warning alarm
- help needed: 502BBC engine problem
- Mercury Racing Oil Filter Cross Reference
- Interior cleaning products??
- What oil should I run?
- GPS/Depth Finder Combo Question
- Teague VS Imco
- Correct blower size for Gen VI 540?????????
- engine mods to a 502 BBC expected H.P gains?
- 1.8 rocker on 500hp
- hydraulic steering valve question
- 188 or 088 heads
- 502/450 hp gm blocks whats the mystery ?
- Are these heads to big for my combo, Merlin iron 345 CC runners
- Trouble aligning engine (350 sbc)
- Transom bearing and starter.
- best price for anodes?
- Fountain fresh water tank pump
- carb for 502
- HP500 Buildup questions
- 502 mag 450hrs on a boat i may buy
- Rub rail screws
- Scarab 22 Gas Tank Fitting
- First Poker Run
- Nordskog
- best oil for 525sc?
- STEREO Advice
- 3rd tank for boat lift location
- Hydrualic steering cap
- Polished Stainless Steel Bolts For Exhaust Tips
- Boat radio circuit amperage
- ESC Module availability
- lightning headers
- Cam and ignition question
- prop for a 24x7 hull
- Any good mefi tuners around LOTO?
- need help
- 502 EFI System Problem
- I need to replace a window on my boat, where do i begin to look?
- Gas questions
- Rotella 15W40
- How much boost would you run??
- Another K-Plane ?
- Blower Size on Mercury 900 SC's??
- Decent OTC head cam combo
- Part number for GEN VI timing cover gasket?
- Buying used headers
- powdercoated out drives?
- Remote Reservoir On Hydraulic Steering
- 500HP how can you tell it is a real one vs. a 454 painted blue?
- GIL or CMI Headers for 500HP??
- Get roller cam or Alum heads?
- new radio an amp
- Kill Switch
- Morel lifter noise
- Silicon on bravo transoms or not
- Belts for HP 500?
- Mallory cross reference
- cam card
- HP 500 EFI (in 20.5 cougar sport skier)
- Anybody with Lincoln Welder Resources?
- Identify This Steering Mfg.
- Switching to captain's choice / call from the corsa quick and quiet 50/50 muff system
- 10778C oil pump, which pressure spring?
- adding shoot through depth transducer???? where to place it?
- K-Plane Pin!!! Stuck!!