- 02 sensors on stock marine motors?
- bravo 1 upgrades
- Another prop ?? 3 or 4 blade on a cat
- Help! - Silent Choice pump found dead.
- Rev limiters for Thunderbolt 4 ignitions?
- Big Metal Shavings in Drive oil
- New website !!
- best ignition for Merc 525SC??
- MSD Engine Protector (Soft-touch rev-limiter)
- dissapearing outdrive oil
- Mercruser Raw Water pump problems
- Anyone with bad experiences with ANY motor oil?
- External Mufflers - opinions pease
- Repainting outdrives
- Got water in motors???
- Exhaust
- Which Amsoil gear lube for o/d?
- Hydromotive Q5
- Fuel Pump
- Major RPM Problems??
- One engine running, one to go
- Easy question- Xover gaskets?
- Prop ???
- More HP = How much more mph????
- Who to buy a drive from?
- Wot Plug Check?
- 502 MPI port engine
- Bravo spacer, what's it for?
- Thunderbolt IV / rev limiting?
- Fuel Tanks
- I need engine and drive help
- how much hp can ssmV drive can handle?
- Gaffrig Drive Temp Indicator Install??
- Carb Question
- ?? for 1 boatnut..
- Whipplecharged motor won't start
- Better coil for Merc TB IV?
- Where is Wette vette?
- Cracked prop tip
- Hydro to Bravo prop conversion
- Starting problems
- Dyno Differences
- Silent choice closing by itself
- EFI Vapor Lock
- Fuel system on a Blower Motor
- rpm's different on motors
- Oil temp rising on port engine?
- Mercury Warranty
- Trim pump replacement on Merc 115 O/B
- Gil manifolds on ebay???
- Speedo tube won't stay on?
- Riser gaskets???
- Trim pump Solenoids
- Rebuild + Oil Pressure?
- 4 Blade Propeller
- what kind of batteries
- MBAM, got some ?????
- Gas guage not working?
- cat conversion from I/O to OB
- K-Plane Cable
- HP500 Intervals
- 20 Hour Service
- Hypothetical 383in SBC engine....
- Fuel line question
- Trim Tab Unit Leaking...
- Help with shifter problems !
- Attn: GregP Oil filter bypass issue
- free 330 pistons
- Blower Motor Noise
- vibrations-hp500
- Questions about different Bravo's?
- Need a new bow mount for my trailer?
- 7.4 intake upgrade
- Help....Blower Motors
- Re-Prop: Who's a good brand to go with?
- ez 2 or 3 mph extra???
- electrical questions
- Transom Leak.....
- ABYC Wiring Color codes
- Boost Gauge w/Procharger?
- Blower belt questions
- distributor change
- Water temp runs 15 degrees high
- Looking for lower half
- dash gauge light colors
- Left my lower unit @ bottom of lake!
- Bruce - not a happy story
- Where did my oil pressure go ?
- Bravo HELP! Lost forward today.
- new engines
- Power Steering
- ARP Studs
- Whipple problems
- Need prop help
- 4.3 engine wanted!
- Does this mean my motor mount is shot?
- Stand off box or extension box
- The "MILK" continues
- Anchor Shades
- Oil filters.....bypass or no bypass???
- Lots of steam from gil wet exhaust
- is there a 4 blade with more bow lift than a bravo1?
- Who labs props in Chicago
- Corsa Silent Choice
- Spark Plugs
- GM engine oil supplement (EOS) anyone use it?
- How do you get engine hatch open with no power?
- Supercharging the 500 EFI and the 454/502 MPI.
- Procharger service
- Anyone changed a flywheel in the boat?
- NOS question
- Cam springs
- Urgent - 350 timing input needed
- What do I set my timing to?
- OSO member "JSV" - drop me a line please
- cam?
- 454 ProCharger piston holes
- 500EFI General Manitenance
- Hi lift cams and silent choice??
- Oil Pressure to low?
- ??mrd Engines??
- bent prop shaft on bravo 1
- One piece Gil riser with silent choice
- Oils - again
- Blowing out my dip stick?
- Merc Plug wires
- Leaky Breathers
- Throttle-Up
- Cam specs
- 650HP Small Block!
- Cracked Head or Block?????
- whipple fuel pump question
- HP 500 valve springs
- 496 HO Procharger
- Oil Pressure Guage Malfuntion?
- Oil flow/temp issue I'm having. Need some help....
- Hydromotive to a Bravo1-What to do?
- kooks SC drive thread ?
- what causes a knocking sound?
- prop question
- Truck tires and load ratings???
- Just replaced 4 trailer tires
- 496HO oil drain hose location
- Why is the camshaft breaking?
- I Need Head!!!!
- 500efi intervals
- 1:36 vs 1:50.. Top speed???
- Re-powering
- Just a quick jetting question.
- Oil Filters??
- ecm question
- SBC Centerbolt Heads/Roller Rockers?
- Getting fresh air into engine compartment.
- Best place to install a oil temp gauge?
- trouble with 7.4 mpi
- Gafrig/Livorsi..What a Rip-off!!
- Bravo 1 trim unit problem.
- Exhaust leak! How Many$$$$
- Problems with 500hp HELP PLEASE!!!
- Bravo Trim Indicators
- Success Story
- Got Milk?....yes I got Milk!
- prop question
- TomZ - How do you like the XE274 Cam?
- Water Temp Sending Unit Number?
- Leaking drive fluid into bilge...
- Good DAY ???? need advice??
- Need advice on Manning Trailer Brakes
- Want to trade pair of 28P Bravo 1 for pair of 26P Bravo 1 propellers
- How much $ for a rebuilt 7.4/454 merc.?
- Water Impellers
- Sea/Fuel Pump Pulley Question
- Broken Stud????
- Propshaft Dyno II
- Raw fuel odor with fuel from exhaust noticed in water
- Torque # for risers??
- replacing wood floors
- Corsa Silent Choice Mufflers
- Gil exhaust = water reversion
- Leaking Bravo
- Whipple install ?'s
- Best Timing
- question for those who've installed drives
- What RPM @ Idle
- Solid Prop Hub
- Best oil in Insta-Trim
- Promax 300X vs Promax 300
- Hydrolic fluid for K-Planes
- #6 Dry Sump service?
- What oil coolers?
- Water in Oil - Risers question
- Bennett Tab Control ????
- Fluid capacity of B/W trans
- Whisteling Noise from Carb
- Spare prop mounts
- SBC Abuse?
- Sealing cylinder head bolts
- Whipple fuel pressure gauge location?
- Timing jumped?
- lash caps?
- Correct spark plug gap?
- oil thermostats?????
- 89 Bravo oil reservoir leaks
- 95-97 502 Mpi
- Water in my cylinders from rain
- Low speedometer readings........
- Merc distributor system question
- wanted.. hi-perf ex manifolds for 502
- engine mount dimensions
- Propeller vents?
- Prop Selection for Chris Craft Stiner 260
- power steering pump
- oil thermostat not helping
- Revolution 4 Prop
- help! 500efi conversion
- 383 carb choice
- Imco steering/drive showers
- 496 Mag HO Oil Filter
- remote battery terminals
- Hp 500 Efi
- Fel-Pro part # needed
- As the project turns -- few pics
- 383 "stumble"
- Water Flow Restrictors ??
- Anyone in the DC area with a 21 Mirage or Mirage + I can try or buy??
- Looking for a 2.5 mid section
- Oil Pumps--which brand to use?
- Flame Arrestor
- Prop and x-dimension
- Tranny fluid smell
- short runner VS> long runners(Who's right
- Pvc
- What is proper break in???
- NEW 502 problems, help.
- oil temp gauges
- Technical assistance PLEASE!
- Ignition module mounting
- Loose steering (excessive play in wheel)
- Gas tank reserve
- Problem Fixed, Guess what it was?
- HYD. valva adjustment
- Need TRS Parts
- Missing 502MPI
- Props 14.5 X 37 Cut you rpm
- 454 thermostat missing
- 502 MPI Upgrades
- Thrust washer for Hydro prop on XR shaft
- Temporarily plugging cavitation hole
- engine dies after running hard
- Water in oil pls help(long)
- RH or LH ???
- k&n ??
- Flex-plate????
- Spark plug heat range and effects on performance?
- exploded 454
- Break In on New 500 EFI's
- water pumps
- Mark 4 engine gurus RE oil leak, opinions needed
- Riser measurements
- closed cooling on HP500EFI????
- Preheating Water Through Imco Powerflow Exhaust
- Sort of OT Oil filter question.....
- K Plane pins?
- Carb Help? Opinions appreciated
- Oil Filter applications for 502 & 496
- K-Plane Sender Fix
- merc t-bolt IV wiring
- Big prop shaft
- proping my cat
- Restoring 28 magnum
- x-dimmension
- Anyone looking for a Supercharged 600 BB Ford ??
- Running off the garden hose with earmuffs
- Fuel supply hose USCG vs SAE
- New Engine Won't Turn Over
- excessive exhaust steam???
- Belt driven fuel pumps for carb motor?
- Quench your thrist?
- Anybody had a problem with Procharger after factory rebuild
- help troubleshooting a problem
- Aeromotive
- 2 questions one on the pooper one on the flapper.
- 502-spark plugs
- U-bolt Torque Number Please!
- kamma gimbal bearings
- kamma gimbal bearings
- Estimated HP
- trim question
- Drew Marine Steering Stabilizers
- Water Press./Oil temp w/closed cooling?
- Propping my combination
- High output alternators..........
- Oh crap, oil leak.
- Flushing LWPU IMCO drives - what muff?
- Oil pressure vs. engine temp.
- Advanced Timing
- getting prop cupped
- Need test props Northern IL. 21&19 Mirage and 19 Rev4
- More Trailer Brake Questions
- Dominator on a Whipple
- Carburetor Jetting?
- How much HP can I make with...
- props4xz/improve this package
- Where can I find MR43TS spark plugs?
- 1/64" Holes in primaries - done it?
- prop help needed
- Finally found the fix !!
- POLL: Speed increase with exhaust,carb, intake,ecm upgrades?
- Need ignition help
- Black Smoke
- Merlin heads, new 502-valve cover oil leak??
- Whipple Fuel Pressure Problem
- Understanding the 4 port thermostat housing
- QuadIV bent! Where to take it?
- Rev.limiter????
- Theory of Hull Speed
- CMI torque specs
- Paging Whipplecharged!!
- Plug color vs. heat line method of tuning.
- Wishbone block off plates and gaskets???
- Detonation From Oil Consumption
- regulating water temp????
- Running Too Cold ?
- Disconnect Oil Cooler???
- Low oil pressure and possibe overheat???? Related?
- What's faster?
- Help with oil bypass valve..
- Success!! Well... mostly.
- Problematic ProChargers
- chicago land performace boat mechcanic
- need cleaver prop help
- stainless tubing for exhaust
- Speedometer stuck @ 35mph
- V6 ign module questions?????
- Msd To Thunderbolt Iv
- FAST formally speedpro engine management system
- timing procedure on efi motor
- Narrowing it down/Alarm
- Drive Shower for a TRS...Do I need one?
- Rpm / Mph
- #6 plug white??? 502
- Is it possible to convert a 350 Mag into a 377 Scorpion?
- Water pressure
- Prop/Stern Lift???
- RPM Gauge/Vibration/Depth finder problems
- Trailer bounce
- Parts help needed Carb and exhaust
- Prop labbing...
- Cat that wants more speed
- ECM question
- Paging Scott72
- Urgent help on jet size
- 454 Lx Mpi
- all 454MAG Created = ?
- Volvo F8 duoprop, what is F8?
- The 383 finally roared to life today!
- Labor estimates - K-planes, Hyd. steering
- Roller Conversion on pre 1987 sb chevys?
- Damaged Prop!
- Paging Griff
- 68.9 mph to 79.8 mph
- 496 HO Belt Squeal
- Another octane q?
- Mercruiser codes 42 & 43
- Drive spacers?
- Reading Plugs and Prop Size
- Octane Concerns
- Is there a rev limiter on a 1988 454 330 hp motor w/thunder bolt ignition
- Corrosion Problem
- ProCharger Oil Return Ideas?
- PROP ADVICE ????? need help
- Aluminum,S/S,SteelWool & Dillon Brass cleaner
- Bellow sleeve?
- Oil Cooler
- Bennet Trim Tab hose blow out... ?
- Vacuum Pumps
- TRS/Velvet Drive combo, How many RPMs?
- Canada Jeff ????
- 8.000 $ later still not fast enough HELP
- Minor continuing problem ...
- formula 353Fastech risers
- Flat cam lobe?
- Virbation problem, Gimbal Bearing?
- Vapor Lock
- How long @ WOT to get color on plugs?
- Motor mount help needed
- surging
- bravo gimbal bolt stripped - need advise
- Props for Yamaha 250's
- Vertglas, Liquid Glass, Island Girl?
- Scott
- water temp problem?
- There "put in cart" links are messed up. The cost is $1100
- Bravo drive reservoir bubbling
- Whipple motor won't start
- Holley Power Valve Selection
- Carb&exhaust
- Oil Temp Sender Plumbing (again)
- 29 Mirage plus vs. 30 Bravo 1 prop
- where can i get merc coolant for a close cooled 496mag?
- Rebuilding 1992 Mercruiser 454. Anyone tried this kit?
- Alarm still going off!!!!! Help!!!
- Operation Facelift (end result)
- What kind of fluid in mercruiser power steering pump ?
- Funny noise when shifting Bravo into reverse
- Just changed the oil/filter and the oil pressure is higher than normal
- Best K-Plane Mounting Location?
- Knock set off alarm????
- Counter clockwise engine fireing order ?
- MPH is lower than expected...
- 23 Mirage + VS. 26 Bravo 1
- SteveDavid-How much HP and TQ does your turbine Hydro race boat make?
- Supercharging a carb HP500
- Look what 1k will get ya Need a quick sale!!
- Any Mercruiser techs in the Chicago area?
- Has Anyone Used Gaffrig Performance Sending units with Livorsi Gauges ?
- What kinds of oil to use?
- Prop diameter
- longevity of HP500EFI
- fuel pump wiring
- Any last minute tips-tricks for me before tomorrow morning?
- What carbs for stock 350 Magnums?
- Bazooka Mounts
- Just cruisin' & one eng died ???
- Looking for a K&N dealer
- I've sprung a leak!!!!
- Fuel sender replacment - safety?
- ?? about generation 4 tall deck block ? need help !
- 502... ?
- 300 Tempest?
- quick trim pump question.
- Are Headers worth it?
- Merctrans, I am in need of one
- loaner tools
- Wet Sanding & Buffing?
- Blower ignition question...
- 2001 454MPI & 2001 350 carb.motors
- Borg & Warner Tranny Question
- another TRS Mercruiser trans question
- thanks for all discussions
- Water Pressure relief valves
- Prop diameter increase/decrease results ?
- Rebuilt Carb, not I've got problems. HELP!!
- Remedy for Hull Oxidation
- 454 mag dies after 3000rpm help!!!
- Port engine dropped RPM's
- Bravo 1 leaking internal?
- Fuel tank installation
- up or down???
- Exhaust smoking while getting on plane
- Few more questions
- Edelbrock Carb Problems
- K&N Flame Arrestors
- knockin in a 1999 500EFI
- sea water pump fluid?
- Leaping carb stumble (?)
- Milk coming out of the breathers
- Mirage+ or LaserII
- Full Hydraulic out - Opinions on other options
- Which selenoid (sp) lowers a Bravo
- Anyone running a low water pressure sender?
- 800 holley or 1050 dominator
- yellowing Gelcoat
- 502mpi water and oil coming out the breather
- 28 skater with twin bb-engines
- Cat with a hook
- Bravo Water Leak and Shift Problem
- need carb opinions.....
- Changeing Thermostat on 2.5
- Detonation Problems
- Starting Carb Jetting
- Distributor Gear Failure on 454 Mag EFI
- Question for the glassers out there.
- Oil cooler sizes
- I need V-6 modules for blown 502's
- Scarab Starting problem, help!
- Pulling engines ???
- carb upgrade question
- Uneven Plug Readings
- need some prop help
- Need some help tuning my carb.....Long Question
- Oil T-stats,who's using aftermarket units
- Best price on Gaffrig guages or guage sets?
- Bravo I won't go into Reverse
- Sharpen the Prop Edge???
- Compensating for "Hook" with Prop selection?
- replacement trailer fenders
- Audio Warning System/HELP
- which trans fluid in merc trans of TRS?
- Kill switch
- Alternator wiring hookup
- Hit Someting HARD!!!!!!!!
- Bravo sticks in forward
- Questions about GPS Mount placement (fiberglass questions)
- K-plane indicator cables
- Can anyone help with part numbers for a 496 mag?
- Torque spec & bolt size for exhaust manifold?
- 7.4 no spark
- 7.4 no spark
- Smoky exhaust manifold