View Full Version : General Q & A




  1. Merc Racing 600 SCi... give me the scoop please.....
  2. Sub/Amp selection and placement
  3. Marine oil filter versus auto oil filter, any difference?
  4. 2.25 vs 2.30 valves in GM heads
  5. How I can make a 454 to 540?
  6. Is there to much steam coming from my exhaust???
  7. Merc 454 TPI work on 496 with no issues?
  8. convincor 251 engine build
  9. Thinking of running a crossover
  10. Idle air control
  11. 250 vs 420 blower
  12. Looking for some BLUE RUB RAIL
  13. 502 exhaust flappers
  14. Great Article on detonation/preignition
  15. Fountain tailpipes
  16. To Goose or not
  17. so many prochargers for sale, makes me wonder
  18. Best Gaskets
  19. IAC Valve (4.3MPI)
  20. opinions on non-power hydraulic steering
  21. help with new motor swap questions
  22. Building a 454 Heads
  23. 600SCI Upgrades
  24. 6.0 lq4 chevy LS cam input needed
  25. 96 four Winns with Ford 302 rebuild questions
  26. Looking at a hynautic hydro steering kit..explain it all to me...
  27. Engine keeps on runing
  28. 31 fastec propellers
  29. Bravo Yoke Repair
  30. Aftermarket EFI systems. Whos running what??? and feedback!
  31. Digital Ignition Control Box!!!
  32. Engine alarm package?
  33. Carbed 502 fuel line size?
  34. 502 efi cam
  35. Engine Room Cameras
  36. Prop advice
  37. 572sc questions
  38. Christmas Tree Orniments
  39. Stellings Bravo Extension Box Cover Gaskets
  40. shorties on a donzi 33 zx
  41. Anybody using wide band A/F gauges while running?
  42. 04 sonic electrical problem
  43. Proven cam combos 540CI??
  44. Tabs too big?
  45. Coupon code for cp performance
  46. 1995 525sc plugs
  47. 496 ho
  48. Need a intake for 500 HP which one?
  49. Upgrades before installing some 496 MAG's
  50. Engine build /compression question combination
  51. convert to crossovers on twin 575sci
  52. Help Needed Setting Up Ignition Timing Curve For Blown 502
  53. going electric...need pics
  54. Experience with Fastec superchargers?
  55. can someone help identify this pcm
  56. Stereo system with low volume output....stumped!
  57. RPM gauge help. ...
  58. Blower Motor Set up and Tune 257 Mirage
  59. Smartcraft "blk psi ckt hi" code
  60. Loud squeal metal to metal
  61. electrical problems please help
  62. 454mag top end rebuild
  63. Is there actually a chiller for B&M/Weiand/Holley 174 Blower
  64. 525 efi upgrade
  65. Bravo I, sometimes both forward & reverse, sometime only forward, sometimes neither..
  66. 454 manifolds fit on a 502?
  67. fuel pressure gauge help...
  68. Cam specs
  69. Is it worth going from MEFI 1 to MEFI 4?
  70. quick oil cooler question
  71. Installing gears in a speed master lower unit.
  72. 1989 Eliminator Tahoe 454 330hp
  73. 502 losing oil pressure
  74. 502 Mag to HP500??
  75. Can Gil exhaust manifolds be milled?
  76. Desktop dyno
  77. Raylar 496 intake
  78. Bennett trim tabs on 271 fastec.
  79. Areomotive a1000 pump getting weak? loosing prime
  80. is this a marine alt?
  81. Custom Dash Panel Help.....
  82. fixing to blow up a boat!
  83. baja 272 power steering tight
  84. Worth swapping intakes?
  85. Help what Company programs MEFI1
  86. Need a Spark Advance Table Chart from 502 EFI
  87. 600 sci, how many hours do you have on yours? Rebuild cost?
  88. Break in oil.
  89. british boat
  90. effects of factory TBIV timing module on performance
  91. 500hp or rebuild my 454??
  92. Raising rev limit on 500 efi
  93. Carter mech. fuel pump #0-2208 help...
  94. 350hp 454 mag carb vs 365hp mag?
  95. RPM for 350 MPI's
  96. Ring end gap.
  97. 1990 baja islander 190
  98. Looking for a starter
  99. 1987 2657 carver will not reach wot
  100. Donzi 38 zx bench seat removal
  101. What is a 8.1 with a Whipple worth
  102. Electric fuel pump or Mechanical?
  103. Fuel pump issues..fuel pump going out?
  104. 502 vs 502
  105. looking for a manuel fuel pump
  106. Pics of last winters Warlock upgrades....there were a lot!
  107. Diacom (total spark advance) Help
  108. problem with bulldog flywheel
  109. flush a drive
  110. Kodiak Brand -Trailer Brake Rotors - Dacromet coated vs Stainless Steel
  111. education opportunity ?
  112. dui distributors
  113. MSD ignition like 6m for a 454 mercruiser - 400 Hp
  114. Mercrusier 350 Mag MPI won't start please help!
  115. Msd ignition like 6M for 454 - 400 hp
  116. 500 EFI Injectors aftermarket replacement
  117. Battery Charger
  118. Gen 6 8.2 HO cam specs
  119. Mercruiser scan tool
  120. Header mounting problem
  121. reading about seawater driven fuel pump - now paranoid
  122. Hp500 carb cam upgrade
  123. Carrie Covers - Opinions
  124. 22 ft 88 avanti can it handle a 1000 hp?
  125. anodized, imron, or powder coat?
  126. Canton Oil pan for Offshore style mount
  127. Corsa 4 wire harness
  128. damaged boats
  129. Throttle response
  130. gen 6 engine filling oilpan with water.
  131. hydraulic steering info
  132. Oil pump pressure relief valve?
  133. Strange fuel tank issue
  134. 500 EFI overheating
  135. FBI virus
  136. oil pan
  137. Excess fuel consumption
  138. PowerPlat 185XLT Euro Windshield Removal
  139. best way to clean sludge and varnish for a aluminum tank
  140. I HAVE FOUND ignition modules for 502 EFI's CHEAP!
  141. condensation inside exhaust?
  142. 525 Cam Sensor Install ? Any one have Instructions?
  143. Smartcraft on Garmin 5212
  144. 496 H.O. two beeps when motor is not running
  145. need to find a distributor module for a EST distributor
  146. Best way to Modify tank for larger pickup?
  147. What size TB's are on 575SCi's
  148. 540/B&M 250 Issue
  149. Need Help With Cable Replacement
  150. Thermostat or not?
  151. 575SCi blower oil
  152. stainless marine sbc maifold clearance
  153. Deck boat / party cat?
  154. Engine R/R Hours and Rates
  155. Does anyone make a steering wheel in teal?
  156. Smartcraft tab position sensor
  157. wiring problems
  158. fiberglass dock box repair
  159. Mercruiser mecahnical fuel pump question HP500
  160. Smart Craft Pros?Cons?
  161. Carbs or EFIs
  162. Fuel Fittings
  163. Adding Cup to props does it really work???
  164. prochargers and boost
  165. Thermostat vs no thermostat 540 cid Procharger engine
  166. Boost retard
  167. Quick Question.....Winterizing 496 H.O.
  168. Someone please explain what hydraulic steering I will need..add on..or full
  169. suggestions on heads, cam, intake swap..
  170. Classified question
  171. Extension boxes
  172. 90 amp fuse
  173. hatch switch
  174. hp 500 carb jetting
  175. vst rebuild kit??
  176. 27 Fountain gas tank shape??
  177. Found Metal in motor, Please help identify. 454 BBC
  178. 496 425hp or 375hp
  179. Chocolate slushy in bilge
  180. reversion - riser solution with stock manifolds or complete change up
  181. Portable / dockside pumpout MI????????????
  182. Mid 90s Bravo 1 Upper Repair or Rebuild
  183. Replacing shifter and throttle
  184. 500 EFI Valves Maybee?
  185. Classified ad
  186. 1/4 inch fuel pump vent line?
  187. Engine Hatch Issues
  188. Smartcraft and K-planes Help Please!
  189. Does the 72C use the same tail housing for #5 drives and TRS drives?
  190. Bad news for alignment and outdrive splines Bravo3
  191. Power steering line thread size
  192. Bent rod, u joints, or ?
  193. 496 Mag (not HO) running rough - code 133 5 vdc pwr low.. Help Please!
  194. White Lightning/Travis
  195. Hydraulic steering pump lacking at low RPM
  196. upgrading Mercruiser HP 500 carb motors
  197. Mercury Smartcraft V1.31 DDT Cartridge
  198. Captains Call Exhaust Issue
  199. What weight oil to run ?
  200. while underway boat port motor shuts down...
  201. 27 Fountain Fever or 29 Scarab??
  202. Oil puke tank
  203. winterization
  204. Phone number for Eagle Marine, Xtreme nut and boot system....
  205. Need to empty fuel tank
  206. Cobra cat 35"
  207. Inverted oil filter on 496 ho engine?
  208. Exhaust Piping ?...
  209. Boost Power Engines
  210. Bringing back E-85 for a update
  211. warlock or eliminator
  212. trim tab cables
  213. Oversized Pistons for 600sci / 700sci motors?
  214. All American Drive Service
  215. 2004 warlock
  216. Fuel supply system
  217. Misfire after 3k rpm...
  218. Temp gauge pegged backwards when ignition on.. 496 Mag Faria gauges
  219. Keihin Injector bore size
  220. looking for my first boat
  221. Quick fix for vapor locking
  222. Electric Trim Gauge not working
  223. Carb tuning
  224. wanting more lope sound
  225. 454 getting hot at wot
  226. Starter life.
  227. Water issues running on trailer
  228. Gauges Light replacement
  229. 502mpi loss of power and surging...
  230. gauges?
  231. crane ignition
  232. stainless marine contact number..
  233. Running out of gas
  234. SMI tail pipe exhaust leak issue
  235. Problems with dart 335 pro 1 heads breaking guide plates
  236. Donzi 26 ZX stock corsa exhaust question
  237. Max valve lift with gen 6 valve covers?
  238. small block turbos
  239. 24-7 engine hatch clearance with bbc
  240. 496 mag ho alarm and hard cold start help??
  241. Water Temp sending unit??
  242. Gimbal bearing
  243. injector connectors
  244. 502 efi
  245. Need Help With Throttle/Shift Cable Brackets
  246. 500EFI vs 525
  247. Sandwich Plate for Imco Powerflow
  248. Speedmaster prop question
  249. 7.4 mpi won't start
  250. gen v-vi block swap
  251. Need new Merc mechanical fuel pumps for 05 525 EFIs
  252. Electric Rams that Left boat hatchs
  253. 502 mag mpi spontaneous stalling at extended idle times
  254. 1992 Powerquest Engine Upgrade
  255. Fountain Bravo 1 WHAT IS THIS??
  256. Removing an Exhaust manifold
  257. 454 7.4 330 hard to turn over when hot
  258. Snap On BK8000 borescope
  259. 502 efi won't stay running
  260. surging idle
  261. what to buy ??? merc scan tool or techmate
  262. Zinc Additive
  263. Help! Gasket material question
  264. 24 Outlaw with twins?
  265. Warning Alarm going off
  266. Prop slip help essex valor 24
  267. Prop hub STUCK
  268. Can a dirty IAC muffler affect top speed in a 496 HO?
  269. oil pressure alarm beep not working
  270. 2007 6.2 Horizon Manifolds/ risers. Opinions on service life?
  271. Merc Racing Valve covers Clear Stud Girdles????
  272. EMI Thunder Exhaust fitting size?
  273. small block oil pump pickup questions, need pan id to find right pickup
  274. Sealing pipe threads on oil cooler?
  275. offshore to onshore
  276. Crazy timing setting
  277. Cleaning non-skid
  278. 850 Mighty Demon tuning instructions? Getting too much fuel and hard to start
  279. Oil temp sensor
  280. Oil pressure sending unit
  281. Aluminum circulating pump closed cooling ?
  282. '82 Excalibur Hawk original gauges
  283. HP 5oo Merc
  284. 600 SCi Oil Pressure Sending Unit Location?
  285. What's the latest and greatest info on the best oil filter
  286. 2001 500 EFI oil overheating
  287. mercury carbed 500's build list
  288. Wellcraft Portofino Exhaust tunnels
  289. Pump out waste tank question
  290. New rebuilt 502 installed and lacking power-Help!
  291. Daytona Plastix
  292. Oil Failure or Something elase? 385HP 454
  293. Broke drive coupler!
  294. 525 efi valve springs
  295. whats a thunderbolt IV ignition worth?
  296. rubber for flappers in exhaust tips.
  297. Purchase Swipes upholstery cleaners
  298. Running lightning headers semi-dry
  299. Where to find vintage vinyl flooring
  300. wind screen
  301. Slop in steering?
  302. recommendations on a fast v hull!
  303. Looking at a 1998 Cobalt 272, is this a deal breaker?
  304. Differenced in gimbal bell housings?
  305. What do i need to run full roller in a GEN V block?
  306. Need help buying crossover system
  307. Adding SmartCraft
  308. Ecm recalibration ? Pcm0701
  309. Amsoil
  310. No fuel pump provision on motor
  311. Cam specs? whats duration at.050??
  312. Jetting hp500 carb for 600hp??
  313. 2 Beeps at startup then stop?
  314. Fuel injector size?
  315. how to set timing on a merc 2000 454 MPI?
  316. Sloppy steering
  317. VHF Radio in Stock Stereo Location (1999 Baja 302)
  318. 502mpi oil Consumption
  319. Need some help here? At a loss...
  320. Is this too much cam?
  321. Has anyone installed these and/or have an opinion???
  322. distributors that will work with TBIV ...
  323. Carb Hat VS carb box on blow thru
  324. Ignition Module 848821-2 500 bulldog
  325. Do I need a new tach?
  326. whats truly needed to swap an ls engine
  327. Whipple Quad rotor carb set up
  328. merc 260 hp 350 getting hot
  329. tack jumping all over the place
  330. Fed up with MSD and Accel, what other options?
  331. Water Pickup
  332. water press.
  333. Help removing prop with unknown prop lock
  334. Corsa Quick & Quite Exhuast diverter solenoids
  335. What spark plugs to use??
  336. iac muffler
  337. What thermostat goes in a 502mpi with a CoolCharger on it?
  338. exhast temperatue 496 mag ho
  339. Safe boost with meth 50/50 mix
  340. Prospective Formula 242LS Project Purchase in United Kingdom - BUT !!
  341. What's my 502mpi worth?
  342. Hydralic hatch to electric, how hard to make the switch??
  343. mercruiser trim problem
  344. Borg Warner 1018 slipping question....???
  345. Volvo Penta 8.1 Limp mode 4000 RPM
  346. Low RPM at WOT
  347. base timing with scan tool issues
  348. 1999 502 Mag - no spark
  349. Hp500 with stock mercruiser manifolds?
  350. I need of an oil cooler line, part is NLA though......
  351. emct overheat code/ guardian mode
  352. what are normal operating temps
  353. Friend just had work done and now weird rooster and loss of speed??
  354. Drive Reservior
  355. Biggest cam with CMI E tops
  356. Steam out of starbord side exhaust - 454 Mag MPI
  357. 2005 Merc 200 EFI ECU issue
  358. Opinions wanted - best switchable mufflers
  359. mercruiser 502 mpi with bravo 3 drive, upgrade path and possibility
  360. Need opinions on my engine/exhaust cooling setup..
  361. sea water pump V belt replacement at Auto Parts store?
  362. Mayfair full hydraulic kit ?
  363. gen vi bbc cam lifter timing chain question
  364. Drop in Rpms
  365. Shift cable
  366. Are my 5.7 l MerCruiser vortec or not?
  367. Need ideals for boat diagnostics. Diacom fault codes with 5 beeps every 60 secs
  368. Need ideals for beat diagnostics. Diacom fault codes with 5 beeps every 60 secs
  369. Underwater LED lights Green/Blue
  370. RPM question
  371. WHO'S GOT A TIRE CONNECTION FOR 6- 445 x 22.5 MICHELINS ?
  372. How big of a cam can I do with EMI with the short risers..
  373. question about parts for bravo
  374. 525 EFI Wheel Target replasement
  375. Block Pressure zero?
  376. 911 Steering Ram Identification
  377. Full Time Silencer Tips...Which is Best?
  378. Early 525 & Smartcraft
  379. Bravo 3 BIII prop install question
  380. BBC 454 Closed Cooling System Quandry
  381. Getting another 100 hp from my 415 hp 502?
  382. Hydraulic hatch accuators
  383. Flywheel help needed
  384. 496ho's will not run past 3500 rpms?
  385. trouble shooting TBolt V ignition issue
  386. Full hydraulic steering on a 24-7 pantera....power or no power?
  387. Dual ram hydraulic add on - hard to turn
  388. 525 EFI Krank timing sprocket?
  389. "guardian mode" on 496 ho engine?
  390. Biggest cam in 502mpi with out reversion with stock manifolds?
  391. battery tender
  392. Verado outboard oil in sterndrives
  393. Finally back in the water
  394. new iac and wont idle down
  395. Thru Hull exhaust internal flapper missing rubber strips
  396. HP500EFI and HP525EFI engine life
  397. Anyone ever put a truck 8.1 in their boat?
  398. 500 hp oil bypass
  399. 02 Sensor getting killed in lightning headers
  400. Trying to diagnose pig-fat rich idle condition on 2bbl Holley
  401. New alternator not charging
  402. Damaged Skegs on Sportmaster Lowers
  403. Switched to Mobil V-Twin 20-50, not sure it was a good move.........
  404. Power Steering issue
  405. who should weld exhaust? factory or...
  406. Very strange oil pressure issue...
  407. 525 EFI Guru's need help!
  408. plenum gasket
  409. Bizarre Carb issue
  410. Champion plugs
  411. LS6 Block
  412. Gil wet exhaust tubes getting hot
  413. 89 baja 320force
  414. Will big block CMI headers work on stock 496?
  415. 700sci Fuel Pump blowing fuses, WHY?
  416. 500 efi ATECO head kit
  417. Merc ignition help please.
  418. 350 mag carb version roller or not ?
  419. While my motor is out....
  420. Is this a Cigarette
  421. Need Gauge Wiring help!!
  422. blower guys
  423. Help! 07 496 no crank no start
  424. Problem with McLeod Bolster- no power
  425. 38 Donzi ZR Tired of losing blades off my propellers
  426. Chasing a 300-400 RPM drop issue in Port motor!!
  427. Monterey by Seabring
  428. Gaffrig gauges/ closed or open??
  429. Supercat engine questions and ideas
  430. Adjustable windscreen?
  431. Wind storm boat covers ?
  432. Strering Problem
  433. 496 replacement injectors
  434. Permatex
  435. Morse tilt steering knuckle
  436. HP 500 camshaft's Do they have a fuel pump lobe?
  437. Motor and 500efi injection question
  438. Mechanical indicator help
  439. Cleaning vinyl?
  440. 36' Apache trim tab cables???
  441. 500 efi issues
  442. EMI Thunder plumping problem
  443. Intake valve, severe cracks !?
  444. Prop wont go any faster.
  445. Computer/Thermostat Question
  446. steering
  447. Hearing whistle when secondary's open???
  448. Corsa exhaust issue. Has to be a simple fix??
  449. 575 sci fuel pressure
  450. Corsa Quick & Quite diverter valve solenoid
  451. 89 or 93 pump gas
  452. 502 efi's water pressure gauge's
  453. O2 Sensor bung installation CMI Etops
  454. steering actuator
  455. Does 93 octane leave chronic soot on the transom?
  456. 1989 scarab 21 excel motor ideas
  457. headbolts for 525 efi
  458. Pro charged 500HP, carb to EFI
  459. Switching from omc to merc, how hard is it?
  460. Starting Problems (Cranking Over)?
  461. Just can't catch a break
  462. Single engine/twin engine prop slip/speed
  463. Fountain shift/throttle-switch sides?
  464. Cobalt fuel pumps?
  465. what is a good qualit and resonably timing set and timing cover for a stock 1990 7.4?
  466. Boat handling issues
  467. looking for help, possible efi issue
  468. 525 cam sensor installation procedures
  469. 502 Mag MPI dies over 4000 rpm/full throttle
  470. Changing a fuel gauge?
  471. 350 Mag MPI WOT bog??
  472. What's the magic spot for a thru hull water depth gage transducer on stepped hull?
  473. Mississippi launches
  474. What do these Spark Plugs say??
  475. 502 EFI intermittently chokes and sputters, drops rpms at cruise speed, stalls
  476. Oil pressure sender 500 EFI
  477. Gauges
  478. Bravo 1 Drive
  479. Pulley slip on ribbed serpentine blower pulleys
  480. 522 missing, bog
  481. Ignition Module
  482. Hp500 EFI injector issue
  483. 496 Temporary Overheat?
  484. Dometic a/c question
  485. Charging diagram twin engine
  486. Replaced impeller 496 ho still no water pressure
  487. Potential Issues with 7.4 L Mercruiser (Year 2000) with Bravo I Drive
  488. Electrical question
  489. 502 quit on me
  490. Mercruiser serial number indentification
  491. What plug to run on a Gen 4 BBC 177 motor.
  492. Strainer cover won`t come off, wtf
  493. Yamaha 4.2 250hp
  494. apache scout motor height
  495. Gaffrig Gauge Questions??
  496. 454 Upgrades?
  497. Weird engine shut down last night 502 MPI
  498. Spinning hubs???
  499. 500 and 525 EFI Vacuum at Idle
  500. 496 Water Ingestion HELP