View Full Version : General Q & A




  1. Alternator belt issues
  2. Original cap on a 2000 7.4
  3. Timing moving on it own?
  4. whats a 2006 70hr 496ho worth?
  5. B/B dipstick, what works good
  6. 502 MPI intermediate shaft question??
  7. Whipple 496HO ECM tune...?
  8. chasing a miss
  9. 500HP EFI with ProCharger ?s, Want to take it off
  10. Gil exhaust 525
  11. Merc vapor lock kit??
  12. Need help with Exported Scanner file
  13. Head gaskets
  14. Where to buy shifter cabels
  15. Help converting to headers on a SBC
  16. big block chevy flywheel
  17. BBC tall deck-"decked" too many times
  18. Gear Ratio
  19. 500 EFI where to buy parts?
  20. Floor replacement in 98 O/L SE
  21. Exhaust hose
  22. 454 Ignition issue
  23. Where to buy nice wheels for trailer?
  24. 496 Seawater pump pulley swap
  25. Fuel injector leak down.
  26. Carb Issue
  27. Most H.P. bang for your buck
  28. Livorsi Oil Temp gauge: I can't understand it!
  29. Strange noise/rattle cant find, help
  30. 27p Hydromotive vs. 28p Bravo 1
  31. HP 500 Rebuild Kits ????
  32. Best fuel pump for 454 mag MPI
  33. 525 heads
  34. popping and pinging getting on plane
  35. ECM/Timing?
  36. O/B not Charging
  37. Supercharged BBC with dead hole.
  38. 22p to 24p swap and losing rpm???
  39. HVH super sucker ???? HELP
  40. 97 fountain 24cs problems
  41. Trim Tab/Tilt Cylinder Issues
  42. Water PSI????
  43. Carter Carburetor keeps flooding
  44. Fountain experts needed!
  45. RPM/MPH loss
  46. Alpha One shift problem
  47. 502 Mag EFI
  48. Ran Across a Sandbar...
  49. Paul Phaff engine Ignition issues
  50. Mpg on an 88 Baja 240
  51. help please stalling
  52. Carpet
  53. GLM Cast Iron Manifolds
  54. 496 Whipple, supporting hardware?
  55. Sea Strainer
  56. fuel system
  57. bravo stern jack
  58. 502 Mpi Backfires
  59. More 496 Ho Troubles
  60. Loss of thrust, Rpms redline instantly
  61. H-Beam or Factory Dimple Rods
  62. 1989 454 max RPM
  63. Mercury 700 Oil
  64. Water in my Imco ext. box....
  65. 2001 7.4 Horizon timing question
  66. Thunderbolt IV rev limiter?
  67. Marine engine vs car engine?
  68. Bravo gear noise
  69. K-planes
  70. Sparkplug Wires
  71. Looking for a Lowrance 3500 Depth Gauge
  72. wiring diagram
  73. ignition problem?
  74. Mercury 300X question
  75. valve cover breathing
  76. Stock Merc 525 Oil Capacity?
  77. boat storage
  78. oil sending unit
  79. 502 mpi intake
  80. Opinions on mini torque starters
  81. Any idea what tabs I have??
  82. Alfa drive swap gen 1 upper to gen 2 lower
  83. Speed Issue
  84. 496 closed cooling system
  85. Help with fuel pickup removal
  86. fuel problem
  87. 502 mag engine temp??
  88. First year of the hp500
  89. Replacement Engine
  90. repower 1989 454
  91. Removing Bravo III with DTS
  92. pull motor?
  93. 500 Efi Miss
  94. Adjusting steering
  95. 525 Flame Arrestor
  96. Corsa Captains Call
  97. B&G Marine Radio ?
  98. 500efi hours?
  99. Heritage Boat Identification plaque application ?
  100. replacing exhaust manifold gasket
  101. anyone know where i can find yellow silicone?
  102. 575SCI idle issue
  103. Alpha 1 to Bravo 1 upgrade
  104. bravo 1 hesitation into gear??
  105. looking for tommymonza!
  106. 454 Magnum Spark Plugs? Top choice??
  107. 502 pumps out oil?
  108. Header repair
  109. no compression?
  110. Cracked plugs?? Why do they crack? Best plug for 454 Magnum??
  111. Remanufactured Merc 383 Stroker
  112. Formula 302 windshields, need suggestions!!
  113. 496 HO need help
  114. ITS Trim sender to a old analog gauge
  115. 525 EFI problem
  116. gen6 502 camshaft problems
  117. New bobtail Volvo
  118. 2005 Volvo Penta XDP carbon fiber outdrive removal
  119. Tachs dead?
  120. Raw Water Pump
  121. Ilmor 7-10 temp ?
  122. Will these heads work??
  123. 496 mag flywheel and crank seals
  124. Bleeding air out of steering system.
  125. Need help figuring out water diagram w new headers
  126. 1997 HP 500 octane reqt
  127. 496 Sea Pump Water Pressure
  128. NOS Blackhawk value
  129. In a bind with Trailer Trim
  130. operating @ wot????
  131. 7.4 MPI very sluggish
  132. Newbies questions
  133. 496 HO Electrical problems
  134. what oil to run in motor
  135. When heim joints go bad...????
  136. 320 efi
  137. 78 excalibur 454
  138. 31ft predator cat!! good deal?
  139. need assistance on a part for trim tab indicator please
  140. Number Of Hours Required?
  141. New Borla mufflers??
  142. Looking for a flame arrestor 454 or 502 MPI
  143. bravo cooling hose at gimbal
  144. warm motor boggs down...............
  145. engine hatch actuator help!!!!!
  146. 31ft predator cat. whats it worth?
  147. Stereo install
  148. what else to replace???
  149. 500 EFI Headers
  150. twin 300xs with different fuel burn?!?
  151. Does anyone make a pressure relief valve besides Mercruiser?
  152. 290 volvo hydralic steering add on kits
  153. 502 Mpi- Raise Idle ?
  154. Trim Tab Question..
  155. Exhaust Help
  156. 502 Mpi - Raise Idle ??
  157. One Motor Revs Higher When Trying to Plane
  158. 496 HO hours
  159. What Year was the last year for the 575?
  160. shift lever question
  161. stuck in gear
  162. Need a new cam
  163. motor cutting off
  164. Fuel Guage Pulse!
  165. 496 HO popping at 4000 rpms
  166. Weird Over-rev Issue
  167. 95 502 mpi cold start problem
  168. Wellcraft Nova
  169. 496 mag antifreeze leak
  170. Newbie questions - performance
  171. Carbs spitting while throttling up
  172. Coil Wiring? Thunder Bolt IV
  173. The most beatin into the ground question -- 500EFI Valve Springs
  174. 525SC tuning for 6K feet
  175. Alternate Alternator?
  176. 320 efi heads
  177. engine rebuilder
  178. Thunderbolt gear
  179. 330 454, heads shot, whats options?
  180. transom exhaust cut out Q
  181. Eliminator Daytona 24 handling
  182. Speedo quit working
  183. Hatch Lift Relay
  184. Fuel Pump Problems
  185. Oil Temp Sender Location
  186. Need to set valves and timing
  187. 502 MPI Tach Issue
  188. Engine will not start 525 sc
  189. 496mag repair
  190. need tach help
  191. Scratch Built - wiring Thunderbolt ignitions
  192. Ideas for a boat cover on a non conventional boat shape.
  193. Bolster Supports
  194. throttle plates, intake manifold are coated with a brown /tar/molassis
  195. Swim Ladders
  196. Backfire In Rough Water
  197. Headgasket thickness, how much is too thick?
  198. cavataion plate to bottom of boat distance?
  199. Cant get RPM out of a 454, 330hp
  200. CPProp Mode Switch High
  201. dart iron eagle heads vs merc heads
  202. Pro Charger Carb
  203. Which Marine AC to get?
  204. Testing fuel pressure on 6.2 MPI
  205. Nose Cones
  206. starboard 496 sluggish
  207. Bimini for 32 Foutain
  208. 502 mpi rebuild (used search/beat to death also)have some ???? lso) o
  209. SBC with a Wieand 142 blower ?
  210. Sound like vapor lock / water in tank / fuel pump?? - 6.2 MPI - Help...
  211. Oil pressure dropped!!!
  212. Best Floating Boat Lift
  213. GPS problem
  214. Strange Smartcraft issue
  215. thermostat change-out help needed!!
  216. Biggest cam/ Stainless Marine Std risers
  217. low water pressure fail
  218. Who has the best deals on flame arrestors??
  219. CMI hedder
  220. Cam information
  221. Bravo drive lube leak?
  222. 496HO....what oil
  223. 2009 Baja Outlaw versus 2010 Checkmate 375zt
  224. Bad relay base??
  225. Vibration While Trimming Down
  226. Can I use clamp on mufflers on my dry exhaust?
  227. Headers and reversion
  228. Stereo
  229. 496ho Water Drain Actuator
  230. Need help finding a new boat...
  231. ecm tuning
  232. Throttle handles
  233. Best place for impeller kit?
  234. Rinker Captiva 262 SS performance ???
  235. rusted plugs
  236. 502mpi questions
  237. trim guage problems
  238. 496 water impellar
  239. how much of a pressure should there be when inserting a gimbel alignment tool
  240. 496 is DEAD!!
  241. 454 Mag
  242. vortech supercharged 502 timing ?
  243. 500 efi intake porting
  244. thermostat help needed!!!
  245. Swivel shaft Specs
  246. Vacuum Pump
  247. Hours till oil change?
  248. Donzi Questions
  249. Carb issues
  250. Major Motor Problems
  251. 496 MAG died, crank sensor?
  252. rochester carb on a performer intake Q
  253. Help...Removing an aftermarket nose cone from a Bravo
  254. change from thru hull to drive water pick-up, speed ?
  255. rejet carb after emi thunder install?
  256. Coupler-does anyone besides Merc make these?
  257. GPS antenna battery
  258. max hp Mark IV bowtie block
  259. Stainless Marine Riser Help
  260. Cant get u-joint cups to go in!!
  261. Alternative Speedo Input??
  262. Patriot Alu heads on SBC
  263. Volvo Duoprop to Bravo 3 Question
  264. What all would take out a coupler?
  265. GPS battery
  266. Interior cleaning
  267. Trim tab selection
  268. *****Intake manifold question*********
  269. Sea Water Pump rebuild question
  270. 454 oval or rec port heads
  271. Trs Gimbals
  272. Ignition timing retards
  273. 454 heads
  274. install amp in engine bay compartment???
  275. 496 HO water leakage mystery
  276. Newbie need prop size help!
  277. How far out would you trim a 32 fever
  278. Wht is this??
  279. rings did not seat
  280. Adjusting Throttles ??
  281. Props
  282. New boat, flush questions
  283. Fuel Pump/Fuel Problem
  284. Envision 3200 XS questions
  285. water in Valve cover and Cylinder #1
  286. Need help with an alpha I gen II drive
  287. motor stays running with key off
  288. 454 Build up
  289. milk and reversion
  290. power steering
  291. Popping out the exhaust
  292. fuel pump(s) for 1000/1200hp...help.
  293. Tach Wiring Question
  294. Gauges help needed
  295. oil temp sending unit on Fountain
  296. motor running rough threw code cam sensor fail
  297. What Color is your Drive Oil
  298. Radio issue...
  299. Dextron III in a Velvet Drive...?
  300. 350 Mag Services Manual
  301. New 489 Blown Head Gasket After 2 hrs run time
  302. Blown Head Gasket After 2 hrs run time
  303. how much to build a 496 stroker?
  304. Fuel Regulator Placement??
  305. Any Landscapers around, got a trimmer related question?
  306. 496 MAG HO heating problem
  307. Fuse for accesory power outlet plug
  308. push button shift on Merc trans
  309. how do i post pics
  310. Temperature problem with 454mpi
  311. Can You Convert A 1994 502 Magnum To Carb?
  312. Problem 496 MAG HO with whipple
  313. computer/ecu no good? 502 mag. help please!!
  314. Erratic oil pressure above 4300RPM
  315. stuck engine hatch on 32 fountain fever
  316. New bilge pump not working
  317. Outboard stalls after hot restart
  318. Drive Oil Analysis Lab
  319. GPS question
  320. Ballast Tank Question
  321. Fire Extinguisher ?
  322. 1994 502 Magnum Runing On 4 Cylinders
  323. holley electric fuel pumps
  324. Which HP500 intake gaskets
  325. bad vibration when turning or with the drive tucked in all the way?
  326. Livorsi Speedo quit
  327. Trim tab Indicator
  328. purchacing dry exhaust
  329. New engine tuning
  330. trim limit help please
  331. quicksilver shifter ?
  332. Merc 502... Can I just use a truck starter or is it not the same?
  333. Lake Cumberland
  334. Water pressure guage on closed cooling 525
  335. Gaffrig tach calibration
  336. anode question
  337. Bunk Carpet
  338. Gel coat supplier
  339. Thunderbolt ignition tach wire.
  340. Mufflers for Dry Exhaust
  341. Fuel Pressure Problems
  342. What should fuel pressure be?
  343. Is there an adapter to put 5" hose on a 4" tailpipe?
  344. Timing on a supercharged small block
  345. Bennett trim tab help please
  346. Wema fuel level sender trouble
  347. valve lash
  348. Problem with my 454 Please Help
  349. 91 Octane or 93 Octane w/ Ethanol?
  350. drive swap info
  351. 496ho high idle? please help
  352. Question???
  353. Running lights/Blower causing boat to run like crap
  354. Anyone have troubles with Morel hydraulics?
  355. 575sci with intercooler and 871 upgrade
  356. JL 770 question
  357. pwr strng pump
  358. Motor Surging
  359. Low Compression #4 and #6
  360. Average build time for engine?
  361. Rebuild 502 or repower with 525
  362. MSD Distibutor HELP!!!
  363. More from a 350 mag
  364. Painting my Imco Extension Boxes.....
  365. Old dried up fuel tanks
  366. engine RPM with 25 mirage plus
  367. Need a part description & where to find?
  368. Timing help
  369. gen 6 502's what are they worth/trade
  370. can't get over 3000 rpms on starboard motor
  371. Fuel additive...yay or nay???
  372. timming jumping all over
  373. zero effort shifter cable installation
  374. engine help
  375. 6.2 bearing failures
  376. 454 mpi ps pump
  377. 496 alam every minute
  378. question about drives and lower units
  379. One engine down on RPM at wot
  380. Mercruiser Slow Acceleration Only
  381. Battery Draining
  382. what oilpan for 383 stroker, stock is hitting !!
  383. how much hp 454
  384. Mercury 600sc stalls when shifting imco sc drive
  385. Power Steering turns left, but very hard to turn right??
  386. Best Method for Charging Batteries?
  387. Water Pressure Guage Doesn't Work?
  388. Fuel fill line
  389. Boat pulling to left
  390. xr cavatation plates
  391. 525 vs 496- How many Hours until rebuild?
  392. Fuel Problems. what am i looking at?
  393. Cut filter, have questions
  394. Livorsi Speedo, Garmin antenna
  395. Loss of power/engine coughs then dies
  396. New 525 efi overheating
  397. need muffler
  398. anyone know where to get brass freeze plugs for a 502 ?
  399. engine parts
  400. 598 thoughts please
  401. alternator wiring help
  402. 525 EFI plug fouling
  403. Where to START! Breaker keeps flipping OFF
  404. rooster tail
  405. Timing Issues
  406. trims wont work seperatly
  407. Thanks again RAYLAR
  408. white sludge / film underside valve covers
  409. Holly Carbs New Models
  410. Looking for 2000 Wellcraft Excalibur Windshield
  411. Have you ever had to adjust the camber on your trailer axles?
  412. Pcv sizes
  413. Help! Sneezing and popping coming on to plane.
  414. scanner and workshop manuals
  415. Ignition timing
  416. oil cooler pluming
  417. cut back risers?
  418. Need ideas on how to mount wind deflectors
  419. Trim Tabs drawing power when idle
  420. Timing a Thunderbolt ignition question.
  421. Gps
  422. Mercury systemview trim indicator function
  423. How many hours is a lot on a merc 454?
  424. Tune-up on 7.4 MAG
  425. Running Hot-Help, I need to fix this tomorrow morning!
  426. Gaffrig GPS speedo intermittantly working
  427. p/s pump fitting??
  428. 502zz cam w/ 496 manifolds
  429. 454 Mag Timing
  430. Cam question for water reversion
  431. DPX problem.
  432. How to I.D. Ignition?
  433. TB IV and msd blue box
  434. how much are these motors worth??
  435. water reversion ?
  436. Help With Gauges - Tach Works Randomly
  437. Why so many bb's vs. sb with procharger??
  438. Frozen 500efi... Now i guess i get to build a new one;-)
  439. 25 sunsation impeller change ??
  440. Charging issues
  441. How is water getting in the cylinders of my 496Mag?!?!
  442. Hydraulic hatch cover wont lift *formula boat
  443. gas gauge quit working
  444. Synthetic for an older motor?
  445. Best Oil for a Merlin long Block 540??
  446. Adding 2 stereo batteries
  447. 97 454 Mag stock oil pressure?
  448. alpha one whining
  449. powerglides with twin diesels?
  450. 575sci Intermittant RPM hesitation??
  451. Gauges ??
  452. Oil pressure gauge fluctuating above 3000rpm!!!!
  453. Broken Exhaust Valve Guide SBC
  454. Canfield stud girdles?
  455. 502mag and msd tach adapters:
  456. Stand off box, when do you use them, what size of boat?
  457. HP500 16535 Hydraulic Roller Lifters Cross Reference
  458. RPM issues
  459. oil sandwich adapter
  460. bat boost components
  461. 525SC Stock Jetting?
  462. HP500 Headers and bored over jetting change?
  463. Stock Chevy 454 Timing.
  464. replaced tbolt v with d.u.i. and cant get tach to work
  465. Reverse Rotation Engine
  466. Tb Iv - Help!!!
  467. Fuel Pump Mech. GPH ? which one
  468. 454 mag lean? need advice on what to do
  469. Boat position on the trailer and slings usage
  470. Prop Selection Help Needed
  471. Stock factory hydraulic steering arm leaking
  472. J.c. Marine,,,496 Impeller Kit
  473. prop
  474. I Need a Set of BBC AFR Heads for 598ci. Supercharge
  475. Another Holley Idle Thread - I'm at wit's end!
  476. oil temp sensor placement
  477. Missing alarm check - 496 HO
  478. Speedometer not working with IMCO
  479. 502 MPI hard start when cold
  480. 700sci IAC Fault Code
  481. Air Gap Intake Manifold
  482. How to tap 502mpi fuel rail?
  483. Can't get engine to warm up.
  484. Captain's choice wont stay open
  485. oil line size
  486. 502 -99 wich gasket?
  487. water in oil 454
  488. Constant tension hose clamps
  489. Outdrive Jacks and Stands
  490. msd problems
  491. Exhaust Diverters
  492. Oil T-stat selection and plumbing
  493. Valve guides for Mercury Racing 525 EFI
  494. X-Dimension Help
  495. 4.3 missing
  496. 496 Poppin through exhaust
  497. Blower motor
  498. 502 Ecm
  499. K K Tab Cables???
  500. Ran above 4000 rpm, overheated