View Full Version : General Q & A




  1. Fuel delivery issue, I think?
  2. 572 Quadrotor Running Rich HELP!
  3. Bravo XR upper driveshaft yoke NEEDED
  4. Belt/pulley squeal when starting - 496 HO
  5. Am I just hallucinating or being paranoid??
  6. 454 block replacement
  7. BBC MAIN and ROD WEAR QUESTION
  8. Need help with Dana billit trim tabs
  9. oil galley plugs
  10. 496, switched to thru prop exhaust, hard to start when warm
  11. 468 Merlin blocks and heads
  12. 800sc question
  13. Mounting a tank in a stepped hull?
  14. Engine has trouble idling down
  15. What vintage
  16. water in motor
  17. 2010 Verado 300's
  18. Help My Please ! 500 EFI Mercruiser Backfire !
  19. Imco Thumper Power Exaust ?
  20. 502 efi overheating.
  21. 454 Starters Driving Me Mad
  22. Bellhousing and coupler for 454 and bravo
  23. really could use your guys knowlwdge
  24. What is too low for water pressure?
  25. Merc 496HO High Exhaust Temp @ Idle
  26. Dropping RPM over 3K – almost like starving for fuel – opinions?
  27. Port manifolds&risers not getting enough water.
  28. Labor cost estimate alpha to bravo swap
  29. dyers superchargers
  30. How to identify motor with serial number.
  31. Engine developed "chirping" sound from stbd side exhaust
  32. Long row back
  33. MEFI 1 350 losing RPM
  34. Teflon Tape on EMI Exhaust Manifold Fittings?
  35. 496 Oil Cooler Upgrade Question
  36. Hatch Hinges
  37. Audible beeps
  38. Trim Tabs causing engine to stall, low voltage
  39. Water Pickup Location !!!
  40. Lost oil pressure AGAIN FN FREAKING OUT
  41. Help identify this boat please !!
  42. Steering Issues....
  43. Help me understand this?
  44. Volvo prop ?
  45. Anyone add hydraulic bleeder tees?
  46. 33 outlaw, 4 Batteries, 2 switches 10 cables????
  47. Transom mount water pickup
  48. Looking at a 383 crate
  49. Repowering..
  50. Water pressure Line question
  51. Need Expert Mechanic on Mercruiser 496HO Fuel Injection System
  52. 1990,s 800sc motor?
  53. Can I run a 496 PS pump dry as an idler?
  54. Yearly Alternator Dying
  55. Thunderbolt IV V-6 Module
  56. Wide band O 2 a sensor placement
  57. Water Flow Issue
  58. Timing procedure for Volvo Penta 5.7 GS
  59. Trim Tabs Flat Or angled ???
  60. Repower
  61. When to rebuild/re-fresh Blown 540s?
  62. Holley 4150 tuning
  63. Does this motor look rebuilt
  64. Parker fuel valve solenoid replacement/substitute
  65. food for thought, fresh water cooling
  66. extra idler to get more belt wrap on procharger drive belt?
  67. Need press in hub for mirage prop
  68. spark plugs for Dart 1-014-2 heads
  69. Mercruiser 502 magnum efi/mp gen VI
  70. Hello from New Hampshire
  71. Mercury Smartcraft alarm going off
  72. 502 running rich on one side
  73. Oil change interval for 525?
  74. IMCO extended drive shaft
  75. Anyone know where the new shop will be?
  76. Working on a boat deal, but have some technical exhaust upgrade questions
  77. Big Block Actual Dimensions
  78. Mechanical fuel pump
  79. Need help, no oil to rockers on 5.7 sbc - long description!!!! sorry!
  80. 502 carb 550hp - Blower vs NA
  81. 91-2013 fountain 29 help
  82. Boy my top gun. Certainly ain't my little rocket ship
  83. Any problems unhooking speedometer hose from B1
  84. ok who got some info on scorpian motors out of livornia mi
  85. Fuel Consumption -- a justification
  86. HP500 Valve Covers Won't Fit W/Stud Girdles
  87. n/a piston to wall clearance.
  88. Possible oil pump gears binding with a Melling 10778? Has is happened to other?
  89. Bravo XR trim leak, help..
  90. Bravo 1 steering actuator
  91. Does an OMC King Cobra setup have any value?
  92. dominator tuning
  93. Burning smell at high RPMs?
  94. HP500 Built to 540
  95. Bravo 1 steering problems
  96. Bravo 1 steering locked up
  97. Another oil pressure issue
  98. exhaust leak need gaskets
  99. Hardin Marine
  100. Anyone ever heard of or tried making vent tubes for a bravo drive like #6's
  101. Random alarm at speed
  102. 350 MPI issue and possible options
  103. Cleaner/wax ect best stuff is???
  104. 502 vst problem
  105. corsa captains call solenoid?
  106. 240 baja undriveable at speed
  107. Rotors
  108. ended up buying cig top gun . so im thinking selling my hull no motors or drives
  109. Water in drive, oil in bilge.
  110. Bravo 1 s/n identification help please
  111. Help Please - re-jet 454 merc carb
  112. Toasted the bearings. Anyone Know why?
  113. Traverse city, Mi - POKER RUN "need ride"
  114. Power trim pump was running under water, replace motor or complete unit??
  115. Baja water in fuel??? Help.
  116. Crane Gold poly lock failure
  117. Need help getting on plane
  118. Bds blower, what should I torque the bolts to?
  119. Gauge upgrade help
  120. Wiring Harness
  121. What size lifter gallery screens to use
  122. Can I use Power Steering fluid for Trim Tabs
  123. please explain the basics of hydraulic trim tabs to a newbie
  124. oil pressure sender - suitable location?
  125. stainless marine exhaust
  126. Raylar 496 IAC valve.
  127. How many engine builders like to use zero gap rings?
  128. 900sc What jet sizes are stock for the carburetors
  129. motor not making the power it should be
  130. 525 SC Good, Bad, and The Ugly Truth???
  131. 7.4mpi with cmi headers which gaskets
  132. Merc smartcraft showing engine malfunction
  133. Carb question. Is this suppossed to be open?
  134. Going to dyno my Procharger head unit, any guesses on how much hp it takes?
  135. 30' cat single hp500 WOT 3500 no more? Need help
  136. Fountain boats Weight increase from 2006 to 2007
  137. Engine flooding
  138. Water Pressure Line
  139. MSD ready to run limiters issues??? anyone?
  140. Milky blowby from valve covers
  141. 496ho misfire and intermittently stalls when starting up
  142. Wideband location ...
  143. Mystery motor please help identify bbc
  144. Water pressure Mercury Racing 525 EFI
  145. MerCruiser Gil exhaust manifolds What motors did these come on?
  146. Harness
  147. Add on hydraulic steering only turning right?
  148. Small block EFI build
  149. Tube pulling duty - best to prop down?
  150. Daytona Sensors question
  151. Which is better Sarasota or marathon races?
  152. 632 CI 815 hp.... 12,000.00?? come on....
  153. Intense marine
  154. Exhaust Question
  155. 6.2 rebuild
  156. Imploded Scarab 29 - Lake Conroe Texas
  157. 377 oil pump
  158. IMCO -3 shorty - water pick up slot
  159. Pilot Buhing
  160. Stalling 502 mag mpi
  161. Why no intank fuel pumps?
  162. Just Confirming - Cometic Head Gasket Reusable??
  163. looking for a 502 crankshaft
  164. 07 38 Top Gun new power, need props?
  165. Help finding Part # for rear main seal SLEEVE for GEN 6 502
  166. Power steering quits working at high trim?
  167. 1979 thunder craft shift problem
  168. Mercury trim pump wiring (diagram), is this right?
  169. Mercruiser 5.7 engine swap, flywheel/coupler question.
  170. Turbos and centrifugals
  171. 7.4 L mercruiser 4 barrel won't kick in
  172. Trim tabs indicator cable lengths..
  173. hi perf merc efi; ever used in a motor vehicle? OEM?
  174. Q-Jet to Hollry Carb Swap Question.
  175. Are fuel pump pushrods supposed to rotate?
  176. Merc theromostat housing gasket ?
  177. mercrury 1075's oil pressure
  178. Huber 925 info request??
  179. 1075sci
  180. Marine Fuel in Southern Michigan - Jones Michigan
  181. For sale
  182. breaking up after 75 % throttle
  183. Exhaust Bolt holes blind?
  184. Installing external hydraulic steering questions
  185. Anyone on here have a 30' cobra terminator cat
  186. Morel vs Johnson lifters. Info needed
  187. 454 has major stumble/flat spot at 3/4 throttle but runs great at WOT - diagnosis?
  188. Operating Temps n/a 540's
  189. Who make the hatch actuator for Advantage in 06
  190. Engine break in oil change
  191. Help with Flywheel or Ring Gear decision
  192. HELP! New 8.2L with CATs has sand in air valves?
  193. 5.0MPI motor pull and oil pan
  194. A/f 540ci n/a
  195. Fuel pressure @ wot
  196. Afr meters
  197. Holley/Edelbrock/Clay Smith 6-valve rebuild kits still available?
  198. Engine Stumbles with Tach Jumping......
  199. Yay ... Fun with wires
  200. Which torque wrench do you use?
  201. Sputtering at WOT
  202. Stupid question: What's the stock Mercruiser 7.4L throttle cable bracket look like?
  203. Depth Sounder and GPS
  204. Help with 502 Mag
  205. Anodized cleaner for painted aluminum
  206. Help with a newly rebuilt HP 500
  207. Engine torque specs 575sci
  208. 525 EFI Oil Pump Drive Sensor
  209. Quick Rinda mercruiser question 555 adaptor
  210. wiring diagram
  211. slight miss when i hit the Trim ?
  212. 2004 496. Differences ?
  213. Fresh Water Flush Kit - operation
  214. Mercruiser 5.0 EFI - Not firing.
  215. Alpha drive tear down and install problem
  216. Power In Power Out
  217. Depth sounder problems
  218. Raw water pump issue 496HO
  219. Dry - To - Tip Thru Transom Exhaust Help
  220. Safe RPM for Merc 420hp
  221. Using my 454 mpi intake on a bored 502
  222. Merc 496 HO / Bravo 1 steering issues
  223. E-Z Tow Trailers.
  224. feedback
  225. Merc Fuel filter, part numbers
  226. Remote start and alarms for boats
  227. Rev limit problem 8,1 inboard Mercruiser (496 Mag)
  228. 496 ho iac not responding
  229. Yamaha base timing mode???
  230. External flap
  231. Bravo One Tie Bar issue
  232. 97 Baja Boss Hammer
  233. Throttle Adjustment - how difficult
  234. What all is different between the 502MPI's "97" and "98" ???????????
  235. Question on new A/C units Dometic vs Webasco vs Mermaid
  236. Emi exhaust still reverting
  237. 7.4 motor runs then it don't
  238. bravo 1 to Bravo xr price difference
  239. How to tell the difference ?
  240. Bravo dual water pick ups
  241. CMI header overheating
  242. Best Spark Plug To Use
  243. Mercruiser 5.7 EFI - knock or ping under heavy load
  244. 575sci what hyd rollercam to use
  245. Do I need water pressure gauges?
  246. well its official fourhoaresman did my tranny in
  247. Hesitation / Bog under acceleration
  248. 454 MAG vs 502 Mag fuel curves
  249. Thunderbolt IV question/ issue
  250. Water Pressure Gauges
  251. 6.2 mpi intermittent stall
  252. k&n oil filter on billet aluminum mount.Almost impossible to get off. Anyone else.
  253. Extension box - external steering
  254. 500 Bulldogs
  255. only one company that makes headers ??
  256. Looking for a good 350 Vortec setup.
  257. quickfuel carbs
  258. shift cable adjustment tool/ plate for a OMC Cobra (1986) drawing or CAD file?
  259. Triple 500 HPs to twin 575 SCIs
  260. Question about B1 transom assemblies
  261. What cam button???
  262. Exhaust port deposits
  263. Walmart oil prices.....
  264. mpi running rich at idle
  265. Freeze plus Chevy
  266. 500efi intake gasket
  267. What Temp Sender is This?
  268. Older 110s kplane
  269. Mercury 1100 Valve Lash
  270. T-stat housing plunbing
  271. 489 Temp weird temp issue
  272. What Engine Oil for Superchaged Engine?
  273. Installing thru hull tips
  274. Questions about big power
  275. 548 or 572 BBC N/A Build Assitance/Advise
  276. Alternative to Rubber Exhaust Flappers??
  277. Deutsch or Weatherpack or Metripack?
  278. Water pressure too high?
  279. Sierra vs. Mercury / Quicksilver
  280. Gen V marine 502
  281. catamaran planning issues. 30' Chris craft
  282. Replacement 5.7 350 engine
  283. Holley EFI/DIS Conversion
  284. 2003 fountain 29 cabin door gas assist cylinder for top flip up door
  285. 500efi head gasket
  286. 496 ho drive coupler question
  287. Speedo hook up?
  288. Tachs not getting signal from smartcraft
  289. Engine swap question
  290. 454 blower update.
  291. Help - Merc 454 can only get to 3900 rpm wot
  292. weird distributor problems...
  293. 454 Mag MPI: Strange cold idle….almost sounds like a 330hp for a few minutes
  294. Wiring question on an engine swap
  295. Thermostat Questions - Notched Gasket?
  296. HaxbySpeed
  297. after market exhaust 350 mag mpi
  298. Need Someone Smarter Than Me
  299. Thru hull exhaust question
  300. What's the purpose of the shift bracket?
  301. 496 Position Sensors (Cam & Crank) Question
  302. oil pan related question
  303. installing transom assembly
  304. Questions on Engine Modification xm270hr cam
  305. B/W Tranny dipstick plug help
  306. well do i have the start of a trans prob
  307. Dry sump tanks
  308. What type are these switchable exhaust tips?
  309. Marine Machine steering cylinder seals
  310. 500 efi ECM and harness question
  311. Trim pump not sounding very good, Bravo 1 drive
  312. Tach acting strange??
  313. Thru Through Hull Transom Low Raw Water Engine Intercooler Pickup Grooves Channels
  314. how to convert to dry exhaust???
  315. Looking for performance increase in 454 magnum EFI and prop advice.
  316. Loose steering
  317. How much to fill antifreeze container in a 525?
  318. 496 HO Burning Pistons
  319. Flame Arrestor / Filter Elements
  320. Another fuel system setup question - fuel / water filter before or after mech pump?
  321. Let the guessing game begin as what broke in 502 mag EFI
  322. 3" vs. 4" thru hull exhaust
  323. Bilge Pump Question
  324. 98 502mag mpi surging
  325. cover bled hint of color onto white vinyl how to get out
  326. HP500 oil filter mount question
  327. Anyone used ggb inserts in dry tails.
  328. Cam intensity question
  329. 525efi Tach reading high
  330. How to get a little heat with crossovers...?
  331. Boat with shorties question
  332. Who has had issues with afr heads??
  333. Running two different styles of pickups on Bravo drives
  334. Fast ez-efi, holley terminator ?????
  335. Cobalt 342 motor troubles
  336. 525 EFI alarm 2800rpms
  337. How do I set timing with no marks on crank?
  338. 525 efi power loss
  339. Setting X dimension
  340. 525 EFI Too Much Water Pressure
  341. 7.4 lx efi falls on its face and hesitates
  342. Windshield Wiper wrist bayonet connector?
  343. 4 blade prop question
  344. 502 mag mpi?
  345. chicken or the egg, ECm or guage
  346. One for the gear heads.... or maybe a stupid question...
  347. Timing a delco voyager distributor
  348. adjusting valves with intake manifold installed?
  349. Both trim tab switches and drive trim switches not working
  350. Motor does not run right at low RPM
  351. Rudder Spacing From the Hull ??
  352. Flushing with thermostats (with holes drilled)
  353. K Plane hydraulic fitting available lengths? Part numbers? suppliers?
  354. 96' 502 mpi, low fuel pressure
  355. Stupid mistake - have I done any damage
  356. Testing an ignition module
  357. looking for drive shaft housing & bearings
  358. Water pressure question, Before I put it back together?
  359. Rochester question
  360. 525 EFI refresh lifter issue!!!
  361. Carburetor to EFI conversions
  362. what kind of boat is this
  363. 525 efi headers
  364. Has Anyone done high compression e85 motors on a big boat?
  365. TRS drive install
  366. 500 EFI noob help
  367. Detonation melted my piston..... but what caused the detonation?
  368. 1991 Baja steering problem
  369. What fuel pump for a 502 making 600+hp.
  370. 2003 evinrude 115hp 2atroke outboard
  371. cam info needed
  372. zero out tach
  373. What gasket surface cleaner?
  374. Cometic gasket surface RA
  375. 26 hustler vs 25 active thunder tantrum with similar power?
  376. 500efi head upgrades
  377. Merctrans linkage/brackets help (man-shift)
  378. What's a good price and will it work ?
  379. 502 burning up water pump impellors.
  380. vertical stack batteries
  381. Looking for proper Mercruiser service manual p/n's.......
  382. Closed Bow or Mid Cuddy open bow?
  383. Cleaning under trailer bunks
  384. 2 stage sea pump rebuild
  385. 496ho Impeller question
  386. Wasted Bravo 1 swivel shaft/steering pin?
  387. Dual water temp sending units on HP500??
  388. crossover on hp500
  389. upgrading to 33c cables
  390. Crossover temp problem HELP
  391. Dual Ram Power Steering Issues
  392. CMI dealer
  393. O2 Sensor in Riser
  394. Recommended fuel line sizes to support NA 575 HP
  395. y pipe diffrence
  396. Holley carb paint / powdercoat suggestions
  397. Need an answer to back pressure
  398. Blower carbs what to run ?
  399. Ok, Ok, I need a new steering wheel...
  400. Dropped a valve!!!!!!!
  401. Bravo Drive Coupler Grease Cup?
  402. Livorsi / Vessel View / Vantage View ? wanting to upgrade dash
  403. What size is a 86 cig mistress 35??
  404. Are outboards really that much cheaper to run?
  405. need help with a simple wiring issue
  406. 496 or 502??
  407. Power Shift
  408. 500 Efi fuel pressure regulator?
  409. Bouncing Tach, need more suggestions already searched! Confused!
  410. H2x vs donzi
  411. hp500 distributor fit on 500efi
  412. oil temp
  413. Lift points on a '83 Scarab 377
  414. Help with new 540 flywheel selection!
  415. 454 MPI Random Power Loss
  416. Bravo Trim ram - only one working?
  417. Fuel pump Q?
  418. What is wrong with these head gaskets
  419. aftermarket alum heads..clear 454 mag piston domes?
  420. 454 mag mpi lack of power? Idles and revs fine, no miss
  421. How often do your routinely clean your air intake(s)
  422. Speedometer pickup?
  423. Spintron
  424. velvet a73c
  425. 525 water pressure problem
  426. BBC Engine missing side caps?
  427. Morel 4603 lifter noise
  428. What widebands you guys running??
  429. What Prestolite pump for an Alpha 1 '86 outdrive and the differences between them
  430. What is this??
  431. Need help with a inject blown 572's that will not run in gear
  432. anyone have any info on Opcon/Imco whipplechargers?
  433. Carpet under seat bottom bases or not?
  434. Springs pressures and valvetrain life
  435. Nothing left to check? VP 5.7GSI wont start - good fuel pressure, good ecm, wiring
  436. Formula 330 SS re-power
  437. Blowers 454 engines and compression ratio?
  438. What cleaning solution to water in oil cooler and lines?
  439. Bravo 1 props
  440. Cmi air cylinders
  441. Smartcraft/AGI Box ?
  442. Are the mercruiser M1 camshaft still available?? I need One
  443. Very high water pressure
  444. 383 mpi , buzzer , stalling help please
  445. 525 EFI intake gasket options
  446. Best product for bedding trim tabs +transom assemblies
  447. Looking for feedback on carbed HP500s
  448. Wrinkled Looking Vinyl......what's up?
  449. getting rid of the vst tank
  450. DUI Live Wires
  451. Dominator tuning
  452. Wierd tuning issue with Whipple engine - Holley ecu
  453. Bravo XR with finned top cap torque spec
  454. SSM prop pitch
  455. ARP head bolts for 525EFI part #
  456. Valve Cover Breathers: What Works?
  457. 525EFI oil pump driver/sensor position
  458. Hydraulic Steering
  459. b&m 250 mpi blower questions on a 509
  460. mk hammer marine
  461. Flushing tubular oil cooler... yes or no??
  462. Plumbing for flushing or trailer running.
  463. Exhaust Bolts
  464. Old or new partnumbers oil pump 525 EFI ?
  465. Going through electric fuel pumps. Why?
  466. Need a good Prop Shop In Portland Oregon??
  467. 8.2L Impeller Replacement
  468. Oil pump help
  469. AFR with procharged setup
  470. What size headers
  471. 2008 mirage wo6
  472. Pop up cleats
  473. 3/16 inverted flare hose fitting
  474. difference in a 496 mag base model and a 496 mag ec model
  475. Any ideas on where to get parts for Captians Choice Exhaust? 525 sc
  476. how many quarts?
  477. Broken Whipple Pulley Studs
  478. Change plugs after fogging?
  479. Bosch oil filter, thread buggered up
  480. Tranny vs bravo boats
  481. Did I just blow an engine?
  482. 217 mirage fuel gauge
  483. Intake manifold gasket question 454/330
  484. Remote Oil filter
  485. mechanical fuel pump questions on bbc
  486. Fuel injector cleaning
  487. 2 power steering pumps or just 1?
  488. Beehive Valve Springs. What if any are the downfall of these springs??
  489. intake manifold torque lbs
  490. 1987 wellcraft 26 spyder
  491. 496 Vortec Cam Swap to Crane cam?
  492. Cool fuel replacement to Aeromotive
  493. Kohler 5E - Genset Help
  494. Gasket kits question...
  495. Marine grade silicone
  496. Switch / circuit breaker help??
  497. Swim Platform Material
  498. Source for stainless "T" in 1-1/2 inch
  499. Speed Loss From Speedo Pitot?
  500. Engine builder