View Full Version : General Q & A
- SRP piston to wall clearance and ring end-gap - Closed Cooling?
- Mercury blue 502
- 502 map mpi in a crownline video
- Extension boxes
- What’s out there for water jacketed turbos preferably with an alum housing
- @ 5 lbs of boost is an intercooler needed?
- Inlet air temps on a turbo engine vs a blower engine
- Volvo Penta 5.0 GXi Fuel Issue
- Imco powerflow PLUS manifolds, whos running them?
- 700SCI NTX Transmissions Help
- Stellings extension box cover gaskets
- 598 longevity question
- Piston ring and cylinder finish webinar
- Parts Manufacture Identification
- 6.2 MX MPI Build
- 350 MAG MPI runs, for the most part. Need a little help
- Merc horsepower ratings
- Need help with excessive oil getting into cylinders on new build
- 4.3 mpfi
- K-Plane restoration
- Will this scan tool work?
- HP 500efi What's the Map & Iac Sensor aftermarket part #'s
- Gil exhaust part number for TRS wet riser
- Stainless marine exhaust pipe plugs
- Gil exhaust leak
- oil temp question
- Marine power 502 pfi. Looking for injectors.
- Twin trs Saginaw power steering help
- What foam to use for seats? Need a softer ride
- What foam to use for seats? Need a softer ride
- What is the difference in these two engines?
- Cast vs. forged crank differences on a Gen V 454
- Tips for removing bravo transom assembly that does not want to come off
- 502 Mag MPI fuel leak cool fuel setup
- carbon spark plugs
- Cam button clearance
- Flush Kit
- Replacement exhaust manifolds
- Gimbal pins
- Fuel Gauge Sending Unit
- Stellings extension box questions
- 496 build thoughts
- Evidence of water in 7 and 8 exhaust ports - both engines. Why?
- 8.3l Whipple vs. 10-71
- Stock oil/steering cooler upgrade
- Mercury 700 Redline / RPM Issue
- Wideband location in Eickert Headers?
- 500efi tps
- 350 MAG Carb to 350 MAG MPI
- 500efi dropping cylinders!!!!!!
- Has anyone adapted a bravo to a OMC 460 ford?
- Steering whine when cold
- How do I fix trailer?
- Herring prop, broke or hit something?
- Question on 500HP engine serial number
- Thunderbolt iv ignition sensor ground wire connection point.
- Two beeps when starting Mercruiser 4.3 v6 TBI
- Calling all 496 gurus. alarms after cranking,
- 2006 496 Mag HO engine runs sluggish and runs rough when engine is cold
- 454L mpi / 454 mag mpi
- vortec head fuel map
- Closed cooling for engines over1000hp
- 454 MPI intake
- Turbochargers
- Engine hatch won't open
- Bravo I W/2 speed prop vs Bravo III
- apache
- Rod bolt torque after inspection
- 502 Mag MPI whipple, procharger or built motor top speed
- Trouble shooting 502
- merc 500/525/575 valve cover oil cap
- Oil Temps for boosted motors over 1000hp
- More Torque out of a 496?
- Please help with my setup. 16ft superboat with 12” JP w/120 Johnson. Only 40mph?
- Mystery oil leak. 502 mag MPI. PICS
- Mobil 1 Oil filter number for 496HO
- 496 Mag belt skips grooves on idler pulley
- B&M 420 Mega Blower
- Hull performance
- Weiand 177 on 489 - Carb Help
- Hull performance
- 502 Balancers
- Dana Exhaust Temp Sensor Bushing 496
- Oil pressure loss
- Where to Buy Outboard
- 700 SCI Refresh
- Swim Step Height (w\ Bravo)
- Perfect Seal for Head Gaslets?
- Full hydraulic steering recommendation
- Engine upgrade advice - 500HP / 525EFI
- Mercruiser 525 won't start intermittently
- Gil Exhaust Manifold replacements
- Washers on starter bolts? Is this OK?
- TBI and MPI fuel tables
- 500 EFI Transom soot
- Holley EFI Timing tables. Can anyone share what they run
- 1996 Powerquest 340 hatch actuator
- Starter Issues
- 1979 Martini cigarette
- 500 EFI Fuel Pump Question
- Lifting points on 454 mag mpi
- Electrical testing gauges
- Low voltage on merc 4 strokes
- Power steering pump went grenade.
- Hydraulic Steering Issues
- Fuel Injection/System Maintenance
- 2005 cigarette top gun merc525
- ethanol vs non-ethanol performance?
- Windshield Glazing/Spline/weatherstrip
- NXT/#6 dry sump filling
- Ignition
- Not another Cam Thread....
- 525 shutdown issues
- 454 MPI advance timing issue
- Exhaust Tips
- 700SCi defueling/guardian mode problem
- 2016 Poker Runs America
- AFR heads on Gen VI block
- 496 mag IAC valve came apart
- 575sci alternator upgrade
- Cam
- 468 engine build cam option
- Replacement Heads for 454 Mag
- MPI Fuel Pumps - Carbed
- Winter projects
- Flange /yoke PTO?
- Internal exhaust flaps
- Spark Plugs and Gap?
- 500 EFI Fuel Pump
- 502 With side whipple help
- Anyone ever run this cam in a NA 540 plus build
- Small 4 stroke sound question
- Mercruiser 8.2 mag HO cam specs
- Water in oil after rebuild
- 496 mag oil leak
- Hesitates around 2000-2500 rpm
- Drive ratio
- GM 454 to 502 Upgrade (Gen 4)
- SBC Intake testing
- 10 qt hardin oil pan
- 525 EFI not starting gramlin
- Exhaust tip sound question
- Any Experience with HCX mufflers
- Corsa exhaust baffles
- Electric fuel shut off
- 496 HO Overheat - How to check manifolds
- Fluctuating water pressure
- Fuel Pump Recommendation
- 2000 7.4MPI injector pulse time 2x longer than spec'd
- 500 EFI Loss of Power and Backfiring
- 454 MPI rpm issue
- 500EFI Thermostat to Headers plugged
- Instatrim boat leveler - Leaking from pump
- Had a Rocker Fail
- Holley intake efi 502
- 500 EFI valve springs
- Fuel supply
- Mercury 500 efi oil filter housing bracket
- new Johnson lifter
- what type of prop
- Component/camshaft choice
- Iso 454 mag injector
- Low hour Bravo XR blows after on propshaft dyno
- 525EFI with AMSOIL Dominator 15w50
- Power trim issue
- Idle Map STR fault
- Best Inconel Valves
- 496 HO - Overheat and High water PSI
- Top Engine Rebuilders
- Motors
- Whippled 509 quits over 1000 rpm
- 454 mag mpi issues at wot
- ,etal fell in, 502 low oil pressure switch help!!!
- Closed cooling question
- 540s heads and cams
- twin engines
- Hard Storage for the engine compartment
- fuel pump fuse location???
- Water Line Routing for Eickert Headers
- Setting idle/air screw
- Hp 525 EFI Reluctor info
- Confusing engine specs
- Loss of power and sputtering
- Loss of power and sputtering
- Agitator 38 ft scarab restoration
- Removing transom assembly
- 01 fountain 35’ lightning help!!!
- theorys and discussion of dbl fire swap cams, carb spacers dual plane vs dyno results
- Procharger issue
- Alarm Issues on 2001, 35 Fountain Lightning w/ twin 500's
- Volvo Penta 4.3 TBI
- Bennett trim tabs
- Transom thickness anyone have an idea?
- Merctrans II
- 5.7 Alpha 1 thunderbolt 4, randomly shut off at cruise
- Yes another lifter thread
- 2 stroke compression question
- Verado Tuning
- Sbc engine identification
- 2000 502 MAG MPI Surging HELP!!!!
- Looking for help. Mechanical drive and tab indicator installation needed
- 540 BBC-what spark plugs
- 1997 7.4 keeps backfiring
- 502 mag mpi rough idle after one dual battery clamp snapped putting hole in it
- Sticking exhaust valve - #7 - Gen VI 088
- main trim line
- 2013 verado 300hp boost control valve fault
- Trim Limit and Trim Sender labaling.
- Sundancer pump ID
- Is the cruiser life for me?
- 496HO random issue vapor lock or ???
- Base timing 4.3?
- Fuel Injectors, replace, clean at home, clean at shop?
- Crower solid roller lifter Q
- who makes a better inline fuel pump ,for OMC
- spark plug gap
- 1997 7.4. Turns over won't start
- Thermostat crossover
- New Gen VI 454 Boat needs intake
- Trying to identify ignition system
- Merc 496 water drain delete
- Aluminum swim platform coating
- Donzi 21 Hornet 1986 rigging help
- Whipplecharged Mercruiser 502 mpi Operating Temp
- Oil pressure gauge seems to read backwards
- Blue Mercury plug wires
- HP500 alternator over charging
- Am I leaving HP on the table??
- 1998 502 MEFI 1 Cool Fuel II low fuel pressure
- Throttle linkage / geometry
- fuel pressure issue, dies at idle, needs re-priming to start
- For old school Foutain owners prop size.
- New steering head needed when switching to dual cylinders?
- SBC dry exhaust
- Is it possible NO Schrader Valve on an MPI engine?
- BBC Spark plug help. Not MR43t
- What RPM should I be at WOT?
- Hp500efi rebuild
- My 1st boat won’t start - 1996 Maxum 1700sr
- Trim cylinders or trim pump testing
- 1990 dynasty 190 grand sport
- Simple/Weird gauge question....
- Any 29 sunsation ccx for sale out there?
- Outboard Merc Verado tech in LOTO
- Aluminum manifolds and risers for 5.7L 350?
- Cliffs High Performance Quadrajet Rebuild
- identify this part
- Trim Position Sensor
- 13 baja
- And an engine question.