View Full Version : General Q & A




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