- New Boater Here And Im Over Heating, Why?
- RAYLAR AWESOME,awesome
- wont shift into reverse
- Exhaust Temp?
- HELP! Need size for hydraulic steering fittings
- chewd up
- Need Help From The MEFI Experts
- Water Reversion In Low Stern Boat: What To Do With Exhaust's Riser?
- milky foamy trans fluid
- canvas waterproffing question
- Alternator output/gauge question
- Holley 950 Hp carb
- oil cooling, at what point do you need to go bigger?
- pushrod length on a Gen 6 502
- Best Plugs for 454
- mercruiser to ac delco part # plug wires
- Starboard motor mount lags pulled out of stringer
- HP 500 to 540
- Anybody Hear Of This?
- What year are my motors?
- Whippled 525 EFI
- 6.2L Samll block Timing
- scarab speed
- Engin Block Alignment
- 3 psi fuel pressure switch
- Injector O-rings
- Question for Elec. Guru's
- tall deck question
- Props
- Trim Switches
- Tall valve covers on 350 mag?
- What Pistons?
- Switchable Muffler experiences?
- Merc 575 info / opinion
- Delete
- Normal Sea Pump Pressure
- balancer on 454 question
- VHF Handheld or Fixed Mount
- 454 with a 600cfm carb...looking for economy..
- How To Set Gear Shifter/Selector
- Oil filter adapter
- 22 Scarab
- McLeod Interior Vinyl Cleaning
- bronse shavings
- HOW TO GET INTOUCH WITH TOPEND MARINE(Jay)
- how do you attach pictures
- cap, rotor, wires?
- TRS parts?
- Any input on these INTAKES???
- Merc 350 Mag gurus? Help plz
- oil filter adapter?
- stepped hull transom pickup
- Calling All Whippled 496 Owners
- distributor module
- milky oil around oil fill caps
- 5.0 Volvo Penta Won't Run
- 350 Mag Carb intake
- Emergency! Recommended Heads??
- leaking elbow gaskets
- 496 HO breaking up @ 3000 rpm
- Carburetor for 350HO -Holley or Quadrajet?
- Trim does not work when over 2,000 rpm
- Motor won't start...???
- M1SC Procharger Reliability
- Dual Trim Harnesses
- more speed?
- Drain plug caulk
- Anyone have Info on older tall deck race engine by "Profile"
- K-Plane problem ... need help!
- Gaffrig tach & Thunderbolt V
- quick silver control help!
- Engine Help!!
- MPI fuel injector specs
- need fuel pump advice and looking to buy a pump
- Spark Plug Recommendation?
- Carb to EFI Conversion 454 Merc
- Error code: Fuel CKT2 Hi ??
- water boiling?
- OMC Remote oil filter "will they work on BBC"
- Ignition timing for 454 /w 177 B&M supercharger
- hatch actuators
- B&M Megablower Oil Change
- Big Elec Problems after 496 To 525 Repower
- Deadrise?..........
- merc cool fuel on carb motor
- Steering Rams TOO beefy???
- Engine Not drawing water
- oil coolers
- coolant overflow
- Water Pressure Guage
- Head bolts
- Anti-siphon Valves
- Sea strainer location
- Risers?
- Oil Temp sensor....where?
- IV to VI filter adapter ?
- 7.4 MPI dies in neutral
- 540 heating up with stat installed
- Holley's on a 454 Mag 365hp
- Engine shut down
- anyone Measuring Exhaust Temp Right At The Head If so What Temps Do You See At Idle
- possible reversion ?
- computers on 454 and 502 mpi
- Motor Grounds- 502mpi
- Felpro Permatorque MLS Gaskets
- High Idle on 525
- Do I need to gel coat before I carpet?
- Is 20w50 Oil OK For A HP525 EFI?
- What triggers dash alarm in a Cigarette?
- 50 amp breaker problem
- 6.2 mercruiser ...help
- Johnson OutBoards
- prop issues ???
- ddt not working with my mefi 4
- 502 MPI Mag/GIL Exhaust
- Wiring Diagram
- BBC Exhaust needed
- Supercharger for 502 EFI
- Longblock problems
- wanted: camshaft for a 500 hp efi asap !
- need opinions on interior layout
- 500 EFI Running hot
- will 750cfm work?
- Alarms going off!!!
- moisture in engine oil
- Old Fuel Question ????????
- XR trim limiters
- BBC / TRS Oil line routing
- alpha drive
- Imco or emi?
- Extra HP525 ECM?
- Warning buzzer on motor swap
- High Oil Temp...2000 32' Fountain Fever
- stock exhaust to gil dry system
- 525 efi Header Gaskets?
- What's The Best Drive Shower For XR
- reading spark plugs
- I need a transporter
- bravo lower unit housing swap-which tools?
- 97 22 scarab alpha...shift issue
- Do all Eddie Marine Risers look like this?
- any thoughts on this thread
- old style 2 piece gimble bearing
- Gen VI oil pump drives ?
- Stock Gas tank Vs ATL Fuel Cell, Ballast tank Vs. Blatter
- engine ?
- Mercury Racing oil filter on a 496?
- 2001 HP 500 EFI Head's GM Part Number?
- 496 sea pump
- rpm rises on idle to 2000 without the throttle !!. 454 mpi procharger ** help !!!
- valve spring swap question plasic seal thingy
- Converting to full hydraulic steering
- Need part numbers badly !!
- How much HP can a stock 330hp Block take?
- Valve cover clearance?
- Engine cutting in and out
- 502 oil temp
- Dies when put in gear
- Do 502 MPI's have chokes?
- How to check X-DIMENSION
- 502 mag mpi timing
- 496 CMI Sport Tube dyno test
- Single vs Dual Plane Intakes on 540
- over riding stock rev limiter
- need help on oil filter/adapter block off for gen iv to vi 454
- New carb. has condensation all over it??
- Power loss during the offseason??
- Audio question
- Installing fender cleats
- Four winns Unlimited U-19
- high oil temp.
- Help Enging Builders
- need help figuring speed
- Huber Transmisions ?????
- Baja cuddy windows
- Low oil pressure at higher RPM" New Motor BBC"
- Help!! Stellings Header Install????????
- What are Merc Racing Rods worth
- long block hp500 weight
- need help jetting twin king demon's on 1271
- oil flow direction??
- what octane
- What are good brands of stock 454 manifolds for salt water?
- Hawk 750 cam specs?
- 2000 27' fountain alarm going off
- Oil press drop on 496
- 500hp with msd boxes ??
- 496 backfire
- Cylinder Pressure
- Hp 500
- Lightning header fitment question
- Steering Question
- Add on 3rd battery
- 1990 330hp 454 Ignition modules ??
- Race Gas Storage?
- water box exhaust
- 496ho exhaust manifolds for a Mk IV 454
- whipple 502
- k-plane trim tab parts
- Who wants to build my 502s into more CIs?
- what needs to be changed gen V to gen VI
- Msd
- Loss of top end speed
- 575 SCI problems ????
- 496 CMI header myth?
- Pre Lube
- help please
- Engine overheating- Advice needed
- reversion question help!!!!!!!
- 1989 Scarab Excel engine and performance help!!!!
- Guardian Strategy 632?
- electric fuel pump pressure problems.
- slow outdrive trim pump-need advice
- Helm and Trim Pump Fluid
- Octane Boosters
- HP 500 engine harness
- Impco Powerflow exhuast manifolds....
- need help selecting a cam gear for thunderbolt distributor
- please help me figure out what its worth
- not enough rpm
- 97 baja 272 Whipple install first ride WOW!!!!
- Livorsi Vantage View?
- Where to get manifolds
- Bad ECM Possibly?
- Riser/Manifolds getting hot..
- looking for head gasket recomdation
- Help Please!!
- crank pulley bolts with wire
- where to mount holley blue fuel pump?
- 91 or 93 octane
- Trying To Reach Tyler Crockett
- SmartCraft Trim Limit Switch
- Need service manual
- grounding purple wire to set timing
- Help..wiring diagram for Alpha 1 Gen 2
- F1 electromagnetic valve train
- Toluene
- broken valve spring retainer
- Boat sat for 8 years. Help!
- Fuel
- Garmin 545 problem!!!
- Fuel pressure 575sci's
- 502 mpi breathers
- Anyone know about carb air bleeds?
- Need some mechanical help
- Trim pump problems
- Electrical / Alternator
- water separator/fuel filter
- sea water pump hoses
- is this too much oil psi?
- jetting on a 850 DP
- Knock sensor going off 502
- 1984 Chris Cat $
- 350 Mag mods?
- Fuel/Electrical Problems
- hp 500 does it come with roller rockers
- hp 500
- TRS prop
- 496 ho idle adjustment ?
- 4" drive studs
- Warning Beeps 383 Stroker
- Not sure what to do.
- 509 EFI ignition timing
- 350 magnum running problems
- serpentine vs vbelt?
- sea water pump impeller???
- Oil pushing out of dipstick end, 502 mpi
- harmonic balancers ??
- High Speed Boating Questions
- Gen vi heads
- engine temp w/crossover
- Water pressure?
- How Often to Change Impellors?
- Moisture on outerside of Carb
- 500 efi vapour lock
- MSD BOX GM-2L getting no spark
- oil mixing
- blower mtr timing
- 496 ho fuel system will not prime
- Engine alignment... Best way to do it??
- XR Drive rebuilt by Franks Marine
- another milkshake question???????
- hoist help
- 502 mpi - strange problem
- Water In Oil
- Arneson Drives VS Weismann Drives
- Info on Char-Lynn Helms
- Dyno Time Any Guess HP
- Bravo Drain Plug Leaking
- power stering
- 420's to 600
- Reinstalling trim tabs
- 496 MEFI 4 Harness
- motor munt questions, read for stringers but not sure on brackets
- Calling all alternator wizards
- Dart block lifter question
- Engine alignment with offshore race mount??
- ignition timing
- 741 cam and distributor gear
- I ran 5000 RPM with supposedly no oil pressure
- oil pressure gages
- drive coupler life
- Livorsi Gauges
- scarab meteor ????
- number 7 cylinder overheated gen 5 502
- QL Trim Tabs, I have slightly Curved Transom...Ideas
- exhauss manifold gaskets
- Idle RPM in/out of Gear on Larger N.A.Carb Motors
- Raylar LSM 550
- 305 cam selection etc.
- cmi big tube elbow
- fuel injection question
- Teague BBC/ Merlin Set Up/Intake HELP!
- guardian mode?
- adjusting valves?
- Kaama Drives and Questions
- wires to alternator
- Oil Flow
- 496 and 500hp exhaust
- Installing new heads...
- Headers How long will they last
- Chevy 350 hp?
- exhaust with 741 cam im confused help
- Exhaust Manifold Driping?
- Bulldogs or stock 500's
- 390 Stinger setup?
- 525 EFI Fuel Line Size...Anyone Know
- plugs
- 2000 32 fever
- Portable jump starters
- Fuel system question
- 500 hp t stat
- Fuel woes
- hardin marine cyclone headers
- Oil pumps
- non stop porpouse
- 38 scarab excel
- Blowers getting hot - how hot is too hot?
- Looking For An Ecm Quickly For 502
- help I'm dum
- reusing rockers and push rods
- Which Pro Charger for 950+ hp
- Engine Popping
- power steering pulley needed
- OutBoard Motor Flusher!!!
- Kill switch wiring
- RPM Redline/Range
- MSD Distributor Hook Up
- shift interupt switch....
- 454 sidemount whipple questions
- HP 500 - Engine Knock
- Bravo Tools
- which oil pump ?
- Water in the trim fluid
- leaky drive fill fittings....
- engine tuning
- Got some slack in the helm/steering cable - is there an adjustment?
- Bleeding Latham Hydraulic steering
- Another fuel pump question
- Boost referanced carbs
- timing chain set, and gaskets
- 500efi cams
- Best Place To Purchase Gimbal Ring And Bearing
- what anti freeze for 496 engines?
- 731 cam, 496 exhaust
- Fuel Catalyst System
- Victory trim tab help
- When too many engine hours ?
- first boat help
- my mystery boat.
- Fuel Pressure: Merc 500EFI & 525EFI
- Draining antifreeze from 496 mag ho
- Cracked exhaust manifold?
- vacum check
- Lighting headers and hot spot
- What happens when you reverse the oil filter hoses? I found out!
- Pro charger belts
- headers for 502?
- Shore Power - 12VDC only
- Need a pair of Mercruiser cool fuel systems
- I need batteries Optima VS Oddysey pc 2150 st
- bbc intake help air gap, Weiand stealth
- Carb guys in here....
- Antifreeze in bilge
- Manifold differences on 502's
- Oil thermostat Install
- In gear stall
- Pro Maxs 300 - "good, bad & ugly"
- header gaskets
- Volvo/merc Diverters Interchange?
- Hill Marine Stainless Gimbal Ring???
- What should I expect for used hyd steering??
- Gil Exhaust
- Pulled Spark Plug - Water came out
- what oil filter for 454 mpi
- Merc 900 SC - What can we do to make 1000hp?
- Merc 900SC - What's better or hotter system, MSD or use stock ignition system?
- updated 454 rear motor mount problem
- 500 hp
- Best exhaust for the money
- Donzi hatch actuator
- 454 330hp alarm question
- Felpro #'s
- DDT 555 harness?? wrong harness or plug on motor
- RPM Difference
- block mounted starter?
- Engine coupler
- Intake/ thermostat sandwich plate?
- Wiring Msd 6al To 1998 Merc. 525sc
- Voids On Hull
- octane booter
- What type of sealant should I use on new exhaust tips?
- Where To Start
- Low seawater pump PSI?
- Merc 5.0 MPI 95'
- Mercury Vessel View ??
- Diacom Software Problems need Help ASAP
- HP525 temp sensor?
- HP525 EFI With Q&Q?
- Stereo Capacitor question
- carb recomendations
- whipples manifold gaskets
- sleeving Gil exhaust to move water out ?
- Merc 502s (MPI)
- Questons on K planes??
- lost coolant
- hp500 efi cmi to stainless marine exhaust
- calling all engine builders
- sbc GM Hot Cam
- Where to install an oil temp sensor?
- 350 to 383 Same upper?
- Upgrading from 496 HO to 525 EFI-Elec Problem
- Mounting electric pumps
- v8 hp ignition module timing?
- Riddle me this Merc 350 TBI(1989) Hp rating
- Disc Changer Mounting??
- I need prop advice for my Carrera SS8M
- 525SC valve spring #'s
- options for floor? carpet or ? non skid paint?
- Swapping shifter,will cables work?
- Best plugs ?
- gill motor mount?
- Blown Head Gasket??
- buying boat with (2) 500hp merc
- 496 cam question???
- New Mobil 1 Racing Oils 0w20 & 0w30
- 525EFI head bolts / ARP kit #
- Windshield
- 525 EFI Filter Maintenance
- Fuel Injector Expert Needed
- More CFM (Bigger Intake) 502/415 Merc.
- how do you plumb a blower intake
- Best Oil choice for supercharged 454 without thermostat
- Anchor
- Crane cams
- gages acting weird
- Lunati 54867lun cam ?
- Greasing Coupler: Question
- HP and max RPM?
- Notched Transom
- Hardin Marine 620-700 water plumbing
- Another alarm question
- need help on baja 250 sport/250 es wind shield/wind screen
- Trim Switch Wiring Question
- Speedometer Help Needed...
- To Stagger or Not to Stagger
- what grade fuel for a 502 mpi
- Gas in blower oil!
- rpm
- restrictor ????
- Power trim pump problem.
- 502 merc
- Starting/Running engine with drive off..???
- Wrist Pins
- Ignition Coil Issues?
- Anybody running car style racing bucket seats
- What damage does reversion do?
- Wideband O2 Tuning
- Gimble bearing replacement
- Water in the stern drive
- Lighting Headers
- F-350 Super Duty Oil Leak
- fuel injection wireing
- Tow Vehicle 2005 F-250 4x4
- oil pressure gage
- Question for Engine Specialists:
- blower cam size
- Is Keith Eickert in business ?
- 502 MAG MPI losing fire....
- Emi exhaust
- galva-lift help
- Ilmor repower ?
- GPS Speedo Instal
- 502 MPI Engine Oil Flow Rate (GPM) and Oil Cooler Line Size
- What's the oil capacity of 454 MAG MPI?
- cam recomendations?????
- A Good Octane Boost?
- help with GPS speedo
- need help with whipple
- New Restriction: 80 Decibels - Lk Mntka, MN