View Full Version : General Q & A




  1. 454 Marine Power Question
  2. 502 MPI hard to start/won't idle
  3. gen VI cylinder head gasket
  4. Trim pump hose fittings
  5. 500 efi short block questions
  6. Ignition Help
  7. Base timing
  8. Max RPMs for OME PowerSteering and ALT
  9. 2009 700SCI low oil pressure warning
  10. water coming in WTF!!
  11. fuel psi on blown carb motor
  12. Engine temp spike
  13. fuel pump question
  14. Algae in fuel tank
  15. Bad plug wire
  16. problems planing
  17. 496 HO Power Steering Problems
  18. synthetic oil in 500EFI?
  19. No Ignition Mercruiser 350 Mpi
  20. 502 efi/mpi breaking up/ cuts out.
  21. HP500 dyno chart ?
  22. running a flexplate instead of a flywheel
  23. reflash a mefi 3
  24. Teleflex Extreme cable; long length needed
  25. Trim indicator cables -
  26. Am I over carbed??
  27. scarab 22 switch alpha to bravo any tips or thoughts
  28. Plexaglass canopy
  29. Looking for Colored Screws
  30. fuel system needs for 470-500hp setups
  31. oil
  32. Headers-use less water to make louder?
  33. Problem with starter grinding
  34. How do I find out who has the loan on a boat I purchased
  35. do a plug check?
  36. Stud Girdles
  37. Overheat issue…maybe
  38. How do i remove imco gimbal ring
  39. 496 Mag w/Whipple Stage II Stock Thermostat Safe??
  40. Power Trim Hoses
  41. Loose Steering
  42. Tulipped valves
  43. Trim tab starting height?
  44. Oil Temps
  45. So how do you think this 496 will run?
  46. Mag To Ho
  47. Has anyone tried these starters
  48. 2001 454 mpi timing
  49. Can a backfire damage a new starter?
  50. Adding anodes to K Planes.
  51. Corsa exhaust question
  52. cutting out
  53. Crankcase Pressure
  54. Add-on vs. full hydraulic steering
  55. scx/sc water pickup question
  56. Baby Steps, 1st Timer: 1990 Regal Velocity 230
  57. HP500 spark plugs
  58. Tight wrist pins
  59. How much HP will MercTrans take?
  60. Drive help and opinions PLEASE!!
  61. Prop ?
  62. Water leak
  63. Changing TBI to MPI
  64. What's my CFM
  65. RMbuilder phone number
  66. 420 Mega blower
  67. gil manifolds reversion?
  68. no trim under power
  69. boat has a leaning to the left issue and break in info???
  70. Mirage plus 25P
  71. 88 baja force 235 speed question
  72. Any help at all please!
  73. Outboard Help
  74. 700sci's starting hard
  75. 500 efi long blocks
  76. 496HO over heating
  77. Speed specs
  78. 525sc upgrades?
  79. Help!!!
  80. Plumbing question
  81. powder coating???
  82. snapped alpha one pinch bolt
  83. need hatch actuator
  84. TPS AND IAC cross reference
  85. 330hp 454 dies at idle.
  86. powerquest emblem
  87. Looking at 94 29 foot scarab just want some input
  88. Which is better?
  89. Uh oh. 106db. How to get to 86? Or at least 90?
  90. Windshield Trim
  91. 24' obsession torent
  92. Gotta vent ... literally
  93. 454/502 harmonic balancer
  94. Mechanical indicator on the drive...
  95. Fuel Pump & Oil adapter
  96. water pump/blown engines???
  97. Smaller family boat?
  98. Head studs hitting IMCO manifolds
  99. McLeod Booster Failure
  100. 500EFI Whipple idle problems
  101. Livorsi ll gauges
  102. 454 Mag MPI HP rating?
  103. MEFI 1 Tuning
  104. No spark from coil - low voltage across leads
  105. depth finder install
  106. Weird temp/gauge issue going on
  107. what intake you guys running on big blocks
  108. boat carpet
  109. 454 EFI VST Fuel Pump anybody?
  110. Keeps Throwing belt...
  111. Does 502 have rectangle-port heads ?
  112. Driving me nuts (condensation?)
  113. Ilmor questions...
  114. Wiring for tab pumps
  115. Trim control switch options??
  116. 454 chev build
  117. Scan Tool???
  118. Where is Dave_N???
  119. 500 efi erratic idle
  120. engine lacking power
  121. lighting headers good or bad?
  122. One side of 496 leaner than the other-
  123. K planes and trim cylinders.
  124. Engine oil pressure issue... opinions ?????
  125. Whats the correct timing and spark plugs
  126. 1 Drive stuck up
  127. Water in my TRS trans
  128. 525EFI Have Knock Sensor?
  129. Help ID'ing 6.2 MPI
  130. Cool lookin PFD's
  131. Weird stain on Vinyl HELP?
  132. new/rebuilt engine -new oilcooler=water oil mix
  133. 30amp to 50amp adapter marine vs rv
  134. steering problems
  135. Latham Steering
  136. Hatch actuator not working!!!! HELP!!!!!
  137. wiring diagram with sensor for 01' 496ho
  138. Engine starving for fuel?
  139. Gas Guage Doesn't work
  140. Trim Sender / Gauge All over the place
  141. Spark Plugs: What is everyone using?
  142. Need a marine surveyor in Palmdale CA
  143. Machine Shop recommendations in S.D.
  144. 525 EFI slow response??
  145. 496ho Lean burn
  146. very small water leak can i
  147. new 496 head gasket issues
  148. Unknown cam specs
  149. Tach does not look right??
  150. 454 Mag EFI Cyl Head
  151. SBC getting hot at high rpm
  152. 300x vs 300xs comparison
  153. hp500 ideling high
  154. Drive / coupler alignment issue is kicking my ass!
  155. 700sci loading Up
  156. old 502 EFI MPI Tuning Kit
  157. Tachometer calibration
  158. 496 Mag Black Soot on Transom Lots of it
  159. Help Diagnose 525 EFI Stutter
  160. Stagger stringer setup?
  161. new 502 engine.
  162. Orange Fluid on Blower Manifold
  163. Blue Hp 500 vaccum line question
  164. Temp sender???
  165. Garboard drain repair
  166. Cyclone Replacements
  167. Trying to standardize fluids between multiple boats (Volvo & Merc)
  168. thunder bolt IV timing questions
  169. 502 not pumping water out exhaust even with ears on drive
  170. Air fuel ratio...wet exhaust???
  171. Swapping steering
  172. Loss of Power at WOT
  173. 540 build help
  174. RPM differential
  175. What pitch should I use?
  176. Muffler adapter
  177. 1998 454 magnum flywheel problem????
  178. Raylar Kit Install for 496 HO
  179. 211 libb speed
  180. Is there an easy way to check Octane Level
  181. fuel ?
  182. fuel ?
  183. Mercury 525 EFI Water Pressure?
  184. 496ho alarm (i have scanner)
  185. Hot Engine Oil
  186. I think I finally pulled the trigger!!!!
  187. bad performance Wellcraft 233
  188. Throttle cables
  189. Knocking noise possibly in driveline.
  190. #1 cylinder problems
  191. Where to draw power for electric choke and fuel pump?
  192. Do you have to have the PCV in the intake HP500?
  193. Any Corsa 4 wire Solenoids for sale ??
  194. new holley carb plumbing
  195. Help Sync'ing Engines/Throttles at Cruise
  196. 557 vs big cubic inches
  197. MAP Pressure??
  198. 454 mpi idle vacuum
  199. Mercruiser 500 Hp Bulldog
  200. waste holding tank
  201. Muffler Question
  202. Hp 500 Fuel Injector wiring
  203. 7.4 mpi with 454 mag cam question
  204. Center console advice concept, glasstream, etc
  205. Crossover bypass routing?
  206. overheating then hydro-locking engine
  207. 496 HO Plug Choice - Confirm please
  208. Engine temp question
  209. 525 hesitation?
  210. Trailer Brake Issue
  211. best high speed bimini ?
  212. changing throttle cable throw 31 sonic
  213. Anyone using Cheap Ebay HEI distrubutors
  214. water temp all over the place
  215. Switching to a electric fuel pump..got question..
  216. Heat exchangers
  217. Scat 9000 Steel Cast Crank
  218. power steering help...
  219. fuel gauge
  220. Tachs Erractic
  221. K-Plane help
  222. Just installed a 496HO in an Formula 242LS, and the tach does not work?
  223. Amp
  224. New 540 with crossover hotter on starbord side
  225. 700hp scarab
  226. motor will only rev to 2300 RPM under load
  227. Dana Marine 4" s/s exhaust tips
  228. 496 mag ho rpm
  229. power loss--Hard starting after sitting for a hour
  230. 1987 formula 242ss speed problem.
  231. 525 Issues?
  232. Trim Tab Problems
  233. ? reprogramming old MEFI 1 and 2 ??
  234. Riser to ex tip mismatch - how far can hose flex?
  235. 496 raw water pump problems
  236. 454 loss of RPM
  237. water temp / oil temp??
  238. XRP fittings source
  239. coupler questions.
  240. Ignition Issues
  241. Need Help, old 502 EFI only 4950 RPM, rev Limit ?
  242. Powerboat shows on TV
  243. HELP. Backwashing 496 after impeller replacement.
  244. Jetting advice needed for 489 with Holley 800
  245. Need help with my gas hog(boat)
  246. CRT cordless rotary trim.
  247. 2000 Fountain twin 502's which prop goes where...stupid??
  248. New Tach Going Crazy
  249. oil pressure sender
  250. super charger
  251. Oil pressure problem need some advice
  252. motor stumbles and stalls out
  253. Hatch actuator
  254. Lightning Headers Vs Gil Dry Exhaust
  255. Question about a dipstick
  256. Brovo 1 - Reverse Problems
  257. MEFI-1 or MEFI-2 Cost?
  258. Carb HP500 Oil Overheating?
  259. How do I drive/fly my new Tunnel? 22' DCB (Daytona) with a 500 HP i/o
  260. Bravo 3 - no forward gear, gets stuck in reverse.
  261. Converting from MercTrans to BW c72
  262. Tighten to yield bolts - Re-use
  263. Everything completely dead... HELP!!!!
  264. Loose Flywheel Bolts???
  265. thermostat hole
  266. Oil cooler repair?
  267. Help, trying to convert from crossovers to thermostats
  268. NJ engine builders
  269. Gen VI 454 mag base timing.
  270. removing painted stripes/logo's safely
  271. stainless marine and takin a big gulp of water
  272. Cover, Sunbrella or Hot Shot or ??
  273. fuel level?
  274. engine alignment with offshore mounts
  275. Flywheel Issues
  276. Having trouble with circ pump hose with RPM AirGap
  277. Prop,s
  278. CMI Header Temp.
  279. Keith Eikert Oil Pans & a starter that fits it? anyone have Experience?
  280. amp question
  281. new outdrive?
  282. DUI Ignition
  283. Intercooler plumbing question
  284. Trouble with electric hatch actuators
  285. 496 just makes a click?
  286. One side running hot
  287. outboard guys steering question
  288. New Altenator
  289. Star Marine Depot
  290. Proper place to show my boat
  291. TQ on a mercruiser 425 hp?
  292. Subwoofer question
  293. Anyone have the ability to convert oil filter part numbers?
  294. Prop Puller - Stuck Volvo DP front prop
  295. buying a winterized boat
  296. bellows install question
  297. 288 Sunsation.
  298. Viking Boat Lifts
  299. Innovate LM-2 integration questions....
  300. Engine hard to start when cold
  301. question about sea pump?
  302. 350 Mag MPI High Oil Pressure
  303. SS Raw Water Pump
  304. Gil manifold riser gasket
  305. Jetting for Supercharged 502
  306. oil dipstick with aftermarket exhaust
  307. 525 Slow to respond?
  308. 500 efi motor noise
  309. Weird electrical problem
  310. marine a/c what refrigerant type
  311. Help!! Engine Demon's!
  312. water psi bypass
  313. stewart warner gauges
  314. Converting from points to thunderbolt
  315. TRS bell housing oil cooler??
  316. Ignition Module Problem
  317. wtb conversion stuff for mpi to carb
  318. Thunder bolt IV timing question
  319. Battery question
  320. 525efi timing problem
  321. Idle water pressure hp500's
  322. fuel pump cam question
  323. What a difference the right prop makes!
  324. Engines dies when shifting, need help here
  325. best cheap stereo
  326. Bowtie Vortec Heads
  327. quick fuel 830 carb???
  328. Water dumps
  329. Advice please. 496 water intake blockage.
  330. Trim adjustment.
  331. Trim gauge not working
  332. windshield part
  333. fuel pump cam question
  334. What heads for my small block
  335. Instrument lighting
  336. 496 mag sea water pump
  337. GPS units anyone running a GPSMAP 640
  338. Oil Change Pump
  339. Problem with my TRS drives
  340. Lightning headers vs Gil manifolds / risers - pros & cons?
  341. Is 212* rating for Fragola Push-Lok hose sufficient for oil cooler line?
  342. Livorsi leaking
  343. Maybe a dumb question but hey?
  344. I need some replacement coupler info!
  345. 496 mag non ho rev limiter
  346. oil temp sender
  347. carb set up help needed
  348. 500efi serial number location help
  349. BEST fuild to run in BORG W
  350. need new motor...compatibility vortec question
  351. Rev limiter?
  352. water pick up
  353. What are the right head bolts for my set up?
  354. polishing lower unit
  355. mpi to carb conversion
  356. epoxy, gel, fiberglass removel from old tabs?
  357. Differences between a 350 mag MPI motor and a GM 350 HO Ram Jet engine
  358. Boat Bottom Hook
  359. BBC Gen 6 manifold gaskets ?
  360. Trim rings.......
  361. boat covers
  362. Lowrance HDS 7
  363. fuel pump problem
  364. AN fitting and routing help...
  365. portable a/c
  366. Need some Help on Sluggish boat Please!!
  367. 6.2 / 377 merc
  368. Battery Help
  369. Moisture
  370. Tuning software??
  371. Gen IV 454 Cam Retainer Plate?
  372. Water Pickups
  373. 525 water temp
  374. 496 oil filter
  375. CMI rope seals dripping water????
  376. Getting really frustrated!
  377. 89 292 Deck Graphics Opinion.
  378. GPS/ chartplotter NEED HELP!
  379. Testing an ECT sensor
  380. Water in Engine oil Please help
  381. Motors are back in!
  382. Livorsi DATA TACH
  383. Four stroke outboard question
  384. Whipple Intercooler water PSI
  385. Oil Change-- Dumb Question???
  386. Clarion CMV1 - Anyone have one?
  387. Weind 177 - Merc 525... 80 W 90 ?
  388. thunder v ignition
  389. Any Mac tool dealers on here?
  390. cold water cold air cold motor
  391. fuel additive
  392. Need a little more POWER!! Help!
  393. 502 re-power options
  394. Compression test results and Gen V 454 Mag / HP425 Differences
  395. suggestions on pwer ugrade wanted
  396. Twin Drive alignment
  397. Gold Digger
  398. valvetrain geometry check - do I need shorter pushrods?
  399. Donzi 38ZX Electrical Questions.....
  400. 2 BOATS, same price, different years, 525sc or 500efi need input
  401. gfs 10
  402. 330 Hp to 400 HP
  403. How to check fluid levels??
  404. New Boat trying to guess HP
  405. Help With Engine Id.
  406. Westerbeke Genset
  407. 350 Mag cutting out at WOT
  408. oil lines
  409. 525 oil change frequency
  410. Amsoil 5-30?
  411. Who makes the best labbed prop???
  412. emi vs stainlessmarine exhaust
  413. thermostat housing change
  414. K-plane pump switch wiring
  415. Whipple vs. Procharger
  416. Buying boat, need to confirm engine hours on "fresh" engine
  417. Stereo
  418. vortec head valve covers
  419. Thanks OSO
  420. Gauge Issues
  421. Which heads are better
  422. Back flow valve for innercooler
  423. 330 hp Stock Exhaust Manifold Swap
  424. merc engine wiring diagram
  425. Lake's near Dayton Ohio for test ride??
  426. Alternator Size?
  427. 454 build horsepower?
  428. fuel pump vacuum
  429. Opinion needed.
  430. Motor Rebuild ?
  431. Is this what I need
  432. 400' X 60 ' pole barn ?s
  433. Port side outdirve & K Plane pump, No Power!
  434. Removing scratches from my windshield
  435. hub kit
  436. Reassembly: 454 Mag Mpi
  437. Carb Spacers
  438. 500hp efi fuel psi
  439. Steering Centerline/ Crank Centerline
  440. Scorpion rocker clatter
  441. Alignment tool fo Imco box
  442. Mounting a Thru hull transducer 88 Baja
  443. Steering wheels
  444. Easy way to identifiy a 351 vs 302?
  445. imco lower
  446. Moisture In Oil
  447. Another one for ya
  448. Opening engine compartment w/ no battery!
  449. steering hub adapter??? Help
  450. got ripped off on some parts and machine work, need advice..
  451. Holley Carb choice ?
  452. gear lube reservoir alarm not working
  453. OSO timing out quickly
  454. 1.8 roller rockers
  455. Non skid
  456. My Header dilema continues
  457. Alpha rear engine mount bolts
  458. transom mounted water pick-ups
  459. Closed Cooling Heating Question
  460. Big Block Oiling Question / by-pass valves
  461. 489 with only 14 hrs compression #s
  462. McLeod Design?
  463. Mechanical speedo
  464. Looking for Bravo One X Decals
  465. Subwoofer box Dynamat lining
  466. Bolt removal - bellhousing to transom
  467. Propane Powered
  468. Someone Please explain this to me...
  469. need help 90 31' scarab excel stringer bad
  470. Any stereo/audio wizards out there...?
  471. boosted tuneups
  472. Muffler removal help, and NEWBIE to site
  473. 2 Warning Beeps on 496ho???
  474. Lenco's vs. K-Planes
  475. Race Pump fuel pumps
  476. Sea Strainers , Brass, Bronze or SS ????
  477. Fuel Flow Meter - HELP
  478. 292 Formula Fastech 400 + HP
  479. paging Fogducker..
  480. gps antenna
  481. Holley help/ twin 750s/5psi boost/roots
  482. Does anyone know where I can get two of these (pic)
  483. Put-In-Bay info
  484. manual fuel pump
  485. Solid Model of a Top Gun
  486. Single or twin fuel usage?
  487. Do Corsa mufflers cause any RPM loss?
  488. Stereo popping with trim adjustment
  489. Saginaw P/S pump GPM Flow rating?
  490. More prop testing and results...need advice
  491. Sea Mounted Fuel Pump Block Off
  492. Holley 800 vs 830 for 489
  493. High fuel pressure.
  494. CD Player remote question
  495. White chalky residue on exhaust manifold/riser
  496. Compression Ratio w/ 4lbs boost at elevation?
  497. Mobil 15W-50
  498. where to buy marine carpet
  499. Good place for rear seat/sunpad within 150m of Austin?
  500. Block casting number