View Full Version : General Q & A
- 502 MAG MPI Cam swap
- Still Looking!
- Running a boat on the hose in freezing temps?
- superchillers
- ignition coils
- Mercruiser HP425 Gen V Big Block pistons
- Did GM sell a 509 block from factory
- The trouble with Blowers is:
- Stainless exhaust tip flappers ???
- What cams will work with stock lifters.
- Knock sensors for 502 mag mpi
- Another build dyno'd today. Whippled 509.
- Compression Ratio
- Anyone Been To The Louisville KY Boat Show??
- Installing new Camshaft
- Nordskog GPS speedometer wiring..
- Facebook tech.
- 1994 mercury racing hp 465?
- 454 cam
- The GM/Merc Rectangle port head. Discuss.
- morel hyd roller lifters
- Pushrods
- Who has 575sci TB?? any motor shops??
- Big cube n/a combo's
- What head should I use
- Leaking Trim/Trim Tab Pumps
- Engine Guys help (scan tool to use) on 97 454mag mpi's
- Diacom software ?? - where to hook up on 525EFI ?
- 502's with roller cams have some saltwater spots on them, Replace or run?
- 454/502 Mag Camshaft GM # 12551622
- 540 Clearances and oil pressure thread...
- Identify this raw water pump?
- cnc d heads
- Piston Mercruiser 496 HO
- Machining Fuel Rails
- 454 Gen 6 Engine Cam Question
- 600SC mechanical fuel pump ability??
- Looking to instal a 496 Mag HO where there was a 7.4 MPI
- Procharged 502 Mag Oil Cooler Recommendations
- Bravo One outdrive
- 700hp 540s
- 454 rebuild with blower... Pistons and clearances.
- Help! - what happened to champion cylinder head co, palm coast, fl?
- good rockers for 6000 rpm, 540CI combo??
- 525 whipple charged engine weight
- Flywheel balancing
- Broken xr case repair?
- B&M blower identification
- noise under valve cover
- Need FlyWheels...Internally Balanced
- Anyone running Imco powerflow manifolds on ZZ502
- TRS Values
- any proffestional tile setters looking for work
- Prop slip increase with speed.
- Oil Pan Swap / Value
- Carb vs Fuel Inj?
- CMI headers leaking....HELP
- anybody with 496 HO using stainless marine exhaust?
- Elbow restrictor gasket vs full flow gasket
- Would you guys use this?
- velvit drive pump
- Rubberized spray flooring?
- Couple quick questions - piston install
- Tuners or Chips?
- How many RPM's can the stock 500HP rotating assembly take?
- Who is not running 45* valve angle?
- In-Control Shifter
- Crank to crank measurement / drive centers
- Bumpers and ropes???
- What oil pan is this???? Gen6 bbc
- 87 scarab excel 26 convert to bravo is it worth it?
- powerquest 270 laser cockpit
- Article about valve angles
- New boat soon, 32' BT, 29' Scarab, 31' Scarab, or another Formula??
- Piston top displacement stats needed
- worth the trouble?? 47 fountain
- New carpet for a Cigarette 20
- Water preassure in Bravo XR?
- Storage of gasoline
- conversion i/o to o/b help.... pics... info... anything
- Couple quick questions
- Grilling go fast
- Good mechanic
- lightning headers in a 25 Daytona?
- Mechanic needed pompano beach area
- 502 mag mpi not priming oil??
- Turndowns and water reversion?
- Fuel Stabilizer or Octane Booster?
- Found a 525 short block! What's it worth?
- +.300 lifters
- Baja 33 Outlaw Parts
- Search Tempest - Trojen virus??
- The million dollar question
- msd
- determining oil
- EFI 525 rear mounted camshaft sensor???
- Merc 700sci hrs/lifespan before rebuild
- Roots supercharger intake question
- Trouble free 525efi - do they exist?
- Different size headers
- Blower Application - Fuel Pressure Reg. & Return Valve
- 502 Ring Recommendation Please
- Good Bad opinion Formula 292 or 312
- original motors in a 91 sutphen
- Leaking Hatch Rams
- Mesa Balancing
- HTM oil pressure gauge
- Regular or Swept back
- Budget 454 Build
- 420hp 454
- benefits of distributor-less ignition
- 454 Repower
- 500 efi
- Dropping some weight on a HP500 carb?
- Any one interested in a boat move New Orleans to Detroit Area
- Best Cam Choice - Non-roller 350 with Vortec heads
- Steering Wheel rotary circuit switch?
- Carb talk
- Carb CFM?
- Gil Manifold Thoughts
- head gasket ?
- Going blown have a few questions?
- 97 PQ 270 laser wt twin 350 mags to 383 400hp what kinda speed
- 350 mag rebuild to 383. oil cooler Question
- AN fittings and Stainless braided lines
- what's the best clamp on muffler/silencer
- Formula 242 drive height.
- B&M 250 vs 420 Mega Blower
- 2001 Sea Ray 280 SS Engine Question
- Low water pickup depth below bottom
- Have you seen this exhaust manifold before????
- 500HP top end in a 502 MAG
- Performance Boating Magazine
- 525EFI Valve Springs Concerns
- Favorite BBC Rod Thread
- Upgrades to Cabin Door and Hatches.
- Calling all mechanics
- Pulled one of my gimbals and the transom is in great shape! Do I still replace it?
- Looking to set up a back-up bullet for the chamber
- HP 500 Head and Cam upgrade
- Alternates for Bravo drives
- 7.4 mpi stock cam specs needed
- Can you keep the thermostat and circulating pump on roots type blower motors?
- engine adjustment front and back.
- Fuel system set up
- valve spring bearing
- Twin engine power steering question
- CMI Headers vs Stainless Marine
- Removing Silent Choice Exhaust ???
- .937 lifters?
- Rod bolts, main caps, and what not.
- Best oil filter with sandwich adapter and plugged bypass?
- Any suggestions on a bench buffer & polisher
- Borg Warner 72C transmission upgrades?
- Choosing Valve Covers
- Another Omc thread
- Smartcraft Alarm
- New Holley Ultra HP carburetor leaking fuel from throttle shafts....Ideas?
- Hyd. roller lifters to solid roller lifters?
- swapping k throttle
- NXT Transmission
- Piston to valve clearance - 454 Mag short block
- Fitch Fuel Catalysts
- Best place to order Mercury parts from
- Need an Anchor
- Corvette C-7 LT1 Engine for marine use?
- Silent Choice on a 525 EFI 29' Fever
- 731 or 741
- Oil pump thread
- De-tuning my 2001 ilmor supercat 517
- Missing skeg(s) and cavitation plate
- 502 mag torque #
- Is there any product that softens vinyl (interior)? What is the best cleaner?
- Drive couplers
- boat length?
- Blown head gasket and worn wrist pin... rebuild advise?
- Wellcraft scarab cv 7.4 v8 engine.
- Pressure checking manifold,headers
- Flat vs Roller, Blown 454
- Can you make a 502 mpi flow more air?
- 525 Header/Tailpipe issue
- 1" or 2" carb spacer
- Dyno proven 675-700 HP 540CI recipes?
- Talk to me about closed loop cooling...any reason not to?
- Need Help on Heads on Gen 5 454's
- Need Help on Heads on Gen 5 454's
- Upgrades to stock 350 sbc
- Hawk 502 specs
- Bearing clearances, oil weight, and more...
- Intake Manifold
- Fuel Pump and Filter mounting
- Hydraulic vs Electric trim tabs
- EFI intake
- GoPro Cam Choice. . . .
- Carb to EFI
- Time to rebuild the 502...
- Oil restrictor size hp500
- 1976 stinger jet boat
- Want more hp out if my 502?
- How do i get the air out of my K-280's trim tabs?
- Has anyone used the new merc digital trim indicators?
- Fountain bilge light - bulb ID
- How is compression ratio figured?
- Who's going to the PRI show next month
- IMCO fuel valve instructions please
- procharged 502 fuel system
- 540CI builds, MAX RPM?
- Bravo or Bravo x3
- Midrange and low RPM grunt. Discuss please.
- 2011 Sea Ray 240 captain seat cylinder adjustment
- HELP i have a gremlin onboard
- SB Exhaust manifolds
- 8' beam into 7'9" garage door
- Antifreeze for Winterize Mercury 700's?
- Cam Questions - Little Help/Direction needed
- single plane intake vs. dual plane
- Blue engine maint?
- Top end refresh?
- Enine Builders?
- 388 hustler that was in the classifieds
- Looking for some real out of the box thinking....
- another milkshake
- What size is this
- HP 500 valve covers....
- Best way to clean old fuel tanks
- ss rod ends?
- Weiand 177 or 256, which kits?
- Step By Step : Building An 871 Blower
- Baja 240 sport (24 outlaw) VS 250 (270)es
- Where to buy bolster tops?
- Fuel pump
- How to tell if its an HP gimble ring or not?
- Projected or non with blowers?
- Smashed Plugs on fresh re-build, any advice?
- Does prop slip increase or decrease with speed? Top speed less than expected.
- Smartcraft gauge rigging question
- What is this plate called and where can I get one?? SsmII
- Antifreeze/Magnesium question. (non boating related)
- 1999 vortec 454 yes or no
- Anyone change an Oil Thermostat in a HP500 Filter housing?
- Circulating Pump Size
- Using Marine battery in Truck?
- motor oils prefered on performance boats
- how to remove gas overflow stain side of boat?
- Holley fuel pump safety switch 12-810. 2 bad in one year.
- Engine Rebuilding
- header friendly sub for r44xls
- HELP PLEASE....Thoughts on repowering
- Roots Blower Sizing
- Engine Pre lube systems