View Full Version : General Q & A




  1. (Carry On) A/C Options
  2. 2001 EFI 260 Mercs---- Thinking of procharging. Pros and Cons requested??
  3. 525EFI Steaming out exhaust after ITS install???
  4. 2000 Mercruiser 502 mag mpi engine scanner....where to get one?
  5. Best way to attach Merc cables to a Demon Carb
  6. Talon wouldn't fire yesterday at the ramp
  7. CMI E-Tops to Corsa Silent Choice
  8. Fountain won't plane out all of sudden
  9. T Bolt 5 plug and harness
  10. 2006 Indmar 383 with SPN 66017 code
  11. 05 496 HO cutting out
  12. HELP! 7.4 Merc dies all of no where!
  13. Baja 320 with a trim pump that just clicks
  14. How to install oxygen sensor bungs.
  15. Adding oxgen sensor to Gil riser
  16. 525sc height
  17. One side of crossover hot other cold. No Temp
  18. Pick up location with a notched transom?
  19. 500hp question carb to efi
  20. Help! Engine wont build rpm
  21. 350 magnum Engine head and cam upgrade
  22. Oil temperature issue
  23. BAHA 340 Mach 1 Combo
  24. gil tail pipe question
  25. Blown Bravo, need advice...
  26. AN fuel line question.
  27. pre alpha transom assembly will alpha 1 drive bolt up
  28. intake manifold heigh
  29. weiand 177 on 454
  30. my brothers 525 sc . get to 3500 and just spit and spatter
  31. Going freshen up 420's
  32. Cause of lifted ring lands on pro charger motor
  33. Cause of lifted ring lands on pro charger motor
  34. LT1 MEFI 2 question
  35. 500efi alternater
  36. Mercury 496 Mag trouble, need help
  37. Best place to buy AGI box?
  38. What happened to the beeper
  39. Twin aluminum Small Blocks good idea, or a bad idea?
  40. Hours reading wrong....Ideas???? please help
  41. Power steering issues after installing single add-on ram
  42. Shift cable Questions ?
  43. Mercury Engine Code
  44. Mercury 700' consumption &constant use in salt water
  45. Carrier bearing flange
  46. Scarab Thunder fiberglass swim platform??
  47. 500 EFI water jackets possibly plugged with mud.
  48. Alpha gen 1 vs gen 2 & TBIV vs TBV
  49. Need Advice On Blower Pullies & Belt Size
  50. Trim Tab Pump worn out?
  51. Steering options for bravo with HP Gimbal for 20' used boat
  52. 2nd Power steering pump smoking and leaking.
  53. water in chamber
  54. EFI Fuel Plumbing - Best Practices
  55. 454 mag mpi 385 hp Gen V 1992
  56. Trim tab pumps
  57. help finding a rebuilt mercury 500 EFI for a fountain
  58. my fountain is officially for sale complete minus hust the engines ..
  59. Oil coming out of hp500/525
  60. 496 HO 2 beeps per...
  61. 540 ci bb chevy blower timing
  62. Most boost/reliable hp anyones made with a block without extra center bolts on heads
  63. Mando Alternator question, on 502 MPI
  64. Engine Knocking 4000 RPM
  65. Need a compact alternator - 496 manifolds on 454 Mag
  66. 572 Blower Motor Knock Sensor / Misfire Problem
  67. 525 EFI Replacement Spark Plug Wires Needed
  68. Baja 442
  69. 225 mariner 3.0 carb'ed issues
  70. bad prop slip on baja 240 sport
  71. Best afr gauge and O2 sensor
  72. what hp am I pushing out of this 540
  73. Power Steering Pulley
  74. Fuel delivery issue, I think?
  75. 572 Quadrotor Running Rich HELP!
  76. Bravo XR upper driveshaft yoke NEEDED
  77. Belt/pulley squeal when starting - 496 HO
  78. Am I just hallucinating or being paranoid??
  79. 454 block replacement
  80. BBC MAIN and ROD WEAR QUESTION
  81. Need help with Dana billit trim tabs
  82. oil galley plugs
  83. 496, switched to thru prop exhaust, hard to start when warm
  84. 468 Merlin blocks and heads
  85. 800sc question
  86. Mounting a tank in a stepped hull?
  87. Engine has trouble idling down
  88. What vintage
  89. water in motor
  90. 2010 Verado 300's
  91. Help My Please ! 500 EFI Mercruiser Backfire !
  92. Imco Thumper Power Exaust ?
  93. 502 efi overheating.
  94. 454 Starters Driving Me Mad
  95. Bellhousing and coupler for 454 and bravo
  96. really could use your guys knowlwdge
  97. What is too low for water pressure?
  98. Merc 496HO High Exhaust Temp @ Idle
  99. Dropping RPM over 3K – almost like starving for fuel – opinions?
  100. Port manifolds&risers not getting enough water.
  101. Labor cost estimate alpha to bravo swap
  102. dyers superchargers
  103. How to identify motor with serial number.
  104. Engine developed "chirping" sound from stbd side exhaust
  105. Long row back
  106. MEFI 1 350 losing RPM
  107. Teflon Tape on EMI Exhaust Manifold Fittings?
  108. 496 Oil Cooler Upgrade Question
  109. Hatch Hinges
  110. Audible beeps
  111. Trim Tabs causing engine to stall, low voltage
  112. Water Pickup Location !!!
  113. Lost oil pressure AGAIN FN FREAKING OUT
  114. Help identify this boat please !!
  115. Steering Issues....
  116. Help me understand this?
  117. Volvo prop ?
  118. Anyone add hydraulic bleeder tees?
  119. 33 outlaw, 4 Batteries, 2 switches 10 cables????
  120. Transom mount water pickup
  121. Looking at a 383 crate
  122. Repowering..
  123. Water pressure Line question
  124. Need Expert Mechanic on Mercruiser 496HO Fuel Injection System
  125. 1990,s 800sc motor?
  126. Can I run a 496 PS pump dry as an idler?
  127. Yearly Alternator Dying
  128. Thunderbolt IV V-6 Module
  129. Wide band O 2 a sensor placement
  130. Water Flow Issue
  131. Timing procedure for Volvo Penta 5.7 GS
  132. Trim Tabs Flat Or angled ???
  133. Repower
  134. When to rebuild/re-fresh Blown 540s?
  135. Holley 4150 tuning
  136. Does this motor look rebuilt
  137. Parker fuel valve solenoid replacement/substitute
  138. food for thought, fresh water cooling
  139. extra idler to get more belt wrap on procharger drive belt?
  140. Need press in hub for mirage prop
  141. spark plugs for Dart 1-014-2 heads
  142. Mercruiser 502 magnum efi/mp gen VI
  143. Hello from New Hampshire
  144. Mercury Smartcraft alarm going off
  145. 502 running rich on one side
  146. Oil change interval for 525?
  147. IMCO extended drive shaft
  148. Anyone know where the new shop will be?
  149. Working on a boat deal, but have some technical exhaust upgrade questions
  150. Big Block Actual Dimensions
  151. Mechanical fuel pump
  152. Need help, no oil to rockers on 5.7 sbc - long description!!!! sorry!
  153. 502 carb 550hp - Blower vs NA
  154. 91-2013 fountain 29 help
  155. Boy my top gun. Certainly ain't my little rocket ship
  156. Any problems unhooking speedometer hose from B1
  157. ok who got some info on scorpian motors out of livornia mi
  158. Fuel Consumption -- a justification
  159. HP500 Valve Covers Won't Fit W/Stud Girdles
  160. n/a piston to wall clearance.
  161. Possible oil pump gears binding with a Melling 10778? Has is happened to other?
  162. Bravo XR trim leak, help..
  163. Bravo 1 steering actuator
  164. Does an OMC King Cobra setup have any value?
  165. dominator tuning
  166. Burning smell at high RPMs?
  167. HP500 Built to 540
  168. Bravo 1 steering problems
  169. Bravo 1 steering locked up
  170. Another oil pressure issue
  171. exhaust leak need gaskets
  172. Hardin Marine
  173. Anyone ever heard of or tried making vent tubes for a bravo drive like #6's
  174. Random alarm at speed
  175. 350 MPI issue and possible options
  176. Cleaner/wax ect best stuff is???
  177. 502 vst problem
  178. corsa captains call solenoid?
  179. 240 baja undriveable at speed
  180. Rotors
  181. ended up buying cig top gun . so im thinking selling my hull no motors or drives
  182. Water in drive, oil in bilge.
  183. Bravo 1 s/n identification help please
  184. Help Please - re-jet 454 merc carb
  185. Toasted the bearings. Anyone Know why?
  186. Traverse city, Mi - POKER RUN "need ride"
  187. Power trim pump was running under water, replace motor or complete unit??
  188. Baja water in fuel??? Help.
  189. Crane Gold poly lock failure
  190. Need help getting on plane
  191. Bds blower, what should I torque the bolts to?
  192. Gauge upgrade help
  193. Wiring Harness
  194. What size lifter gallery screens to use
  195. Can I use Power Steering fluid for Trim Tabs
  196. please explain the basics of hydraulic trim tabs to a newbie
  197. oil pressure sender - suitable location?
  198. stainless marine exhaust
  199. Raylar 496 IAC valve.
  200. How many engine builders like to use zero gap rings?
  201. 900sc What jet sizes are stock for the carburetors
  202. motor not making the power it should be
  203. 525 SC Good, Bad, and The Ugly Truth???
  204. 7.4mpi with cmi headers which gaskets
  205. Merc smartcraft showing engine malfunction
  206. Carb question. Is this suppossed to be open?
  207. Going to dyno my Procharger head unit, any guesses on how much hp it takes?
  208. 30' cat single hp500 WOT 3500 no more? Need help
  209. Fountain boats Weight increase from 2006 to 2007
  210. Engine flooding
  211. Water Pressure Line
  212. MSD ready to run limiters issues??? anyone?
  213. Milky blowby from valve covers
  214. 496ho misfire and intermittently stalls when starting up
  215. Wideband location ...
  216. Mystery motor please help identify bbc
  217. Water pressure Mercury Racing 525 EFI
  218. MerCruiser Gil exhaust manifolds What motors did these come on?
  219. Harness
  220. Add on hydraulic steering only turning right?
  221. Small block EFI build
  222. Tube pulling duty - best to prop down?
  223. Daytona Sensors question
  224. Which is better Sarasota or marathon races?
  225. 632 CI 815 hp.... 12,000.00?? come on....
  226. Intense marine
  227. Exhaust Question
  228. 6.2 rebuild
  229. Imploded Scarab 29 - Lake Conroe Texas
  230. 377 oil pump
  231. IMCO -3 shorty - water pick up slot
  232. Pilot Buhing
  233. Stalling 502 mag mpi
  234. Why no intank fuel pumps?
  235. Just Confirming - Cometic Head Gasket Reusable??
  236. looking for a 502 crankshaft
  237. 07 38 Top Gun new power, need props?
  238. Help finding Part # for rear main seal SLEEVE for GEN 6 502
  239. Power steering quits working at high trim?
  240. 1979 thunder craft shift problem
  241. Mercury trim pump wiring (diagram), is this right?
  242. Mercruiser 5.7 engine swap, flywheel/coupler question.
  243. Turbos and centrifugals
  244. 7.4 L mercruiser 4 barrel won't kick in
  245. Trim tabs indicator cable lengths..
  246. hi perf merc efi; ever used in a motor vehicle? OEM?
  247. Q-Jet to Hollry Carb Swap Question.
  248. Are fuel pump pushrods supposed to rotate?
  249. Merc theromostat housing gasket ?
  250. mercrury 1075's oil pressure
  251. Huber 925 info request??
  252. 1075sci
  253. Marine Fuel in Southern Michigan - Jones Michigan
  254. For sale
  255. breaking up after 75 % throttle
  256. Exhaust Bolt holes blind?
  257. Installing external hydraulic steering questions
  258. Anyone on here have a 30' cobra terminator cat
  259. Morel vs Johnson lifters. Info needed
  260. 454 has major stumble/flat spot at 3/4 throttle but runs great at WOT - diagnosis?
  261. Operating Temps n/a 540's
  262. Who make the hatch actuator for Advantage in 06
  263. Engine break in oil change
  264. Help with Flywheel or Ring Gear decision
  265. HELP! New 8.2L with CATs has sand in air valves?
  266. 5.0MPI motor pull and oil pan
  267. A/f 540ci n/a
  268. Fuel pressure @ wot
  269. Afr meters
  270. Holley/Edelbrock/Clay Smith 6-valve rebuild kits still available?
  271. Engine Stumbles with Tach Jumping......
  272. Yay ... Fun with wires
  273. Which torque wrench do you use?
  274. Sputtering at WOT
  275. Stupid question: What's the stock Mercruiser 7.4L throttle cable bracket look like?
  276. Depth Sounder and GPS
  277. Help with 502 Mag
  278. Anodized cleaner for painted aluminum
  279. Help with a newly rebuilt HP 500
  280. Engine torque specs 575sci
  281. 525 EFI Oil Pump Drive Sensor
  282. Quick Rinda mercruiser question 555 adaptor
  283. wiring diagram
  284. slight miss when i hit the Trim ?
  285. 2004 496. Differences ?
  286. Fresh Water Flush Kit - operation
  287. Mercruiser 5.0 EFI - Not firing.
  288. Alpha drive tear down and install problem
  289. Power In Power Out
  290. Depth sounder problems
  291. Raw water pump issue 496HO
  292. Dry - To - Tip Thru Transom Exhaust Help
  293. Safe RPM for Merc 420hp
  294. Using my 454 mpi intake on a bored 502
  295. Merc 496 HO / Bravo 1 steering issues
  296. E-Z Tow Trailers.
  297. feedback
  298. Merc Fuel filter, part numbers
  299. Remote start and alarms for boats
  300. Rev limit problem 8,1 inboard Mercruiser (496 Mag)
  301. 496 ho iac not responding
  302. Yamaha base timing mode???
  303. External flap
  304. Bravo One Tie Bar issue
  305. 97 Baja Boss Hammer
  306. Throttle Adjustment - how difficult
  307. What all is different between the 502MPI's "97" and "98" ???????????
  308. Question on new A/C units Dometic vs Webasco vs Mermaid
  309. Emi exhaust still reverting
  310. 7.4 motor runs then it don't
  311. bravo 1 to Bravo xr price difference
  312. How to tell the difference ?
  313. Bravo dual water pick ups
  314. CMI header overheating
  315. Best Spark Plug To Use
  316. Mercruiser 5.7 EFI - knock or ping under heavy load
  317. 575sci what hyd rollercam to use
  318. Do I need water pressure gauges?
  319. well its official fourhoaresman did my tranny in
  320. Hesitation / Bog under acceleration
  321. 454 MAG vs 502 Mag fuel curves
  322. Thunderbolt IV question/ issue
  323. Water Pressure Gauges
  324. 6.2 mpi intermittent stall
  325. k&n oil filter on billet aluminum mount.Almost impossible to get off. Anyone else.
  326. Extension box - external steering
  327. 500 Bulldogs
  328. only one company that makes headers ??
  329. Looking for a good 350 Vortec setup.
  330. quickfuel carbs
  331. shift cable adjustment tool/ plate for a OMC Cobra (1986) drawing or CAD file?
  332. Triple 500 HPs to twin 575 SCIs
  333. Question about B1 transom assemblies
  334. What cam button???
  335. Exhaust port deposits
  336. Walmart oil prices.....
  337. mpi running rich at idle
  338. Freeze plus Chevy
  339. 500efi intake gasket
  340. What Temp Sender is This?
  341. Older 110s kplane
  342. Mercury 1100 Valve Lash
  343. T-stat housing plunbing
  344. 489 Temp weird temp issue
  345. What Engine Oil for Superchaged Engine?
  346. Installing thru hull tips
  347. Questions about big power
  348. 548 or 572 BBC N/A Build Assitance/Advise
  349. Alternative to Rubber Exhaust Flappers??
  350. Deutsch or Weatherpack or Metripack?
  351. Water pressure too high?
  352. Sierra vs. Mercury / Quicksilver
  353. Gen V marine 502
  354. catamaran planning issues. 30' Chris craft
  355. Replacement 5.7 350 engine
  356. Holley EFI/DIS Conversion
  357. 2003 fountain 29 cabin door gas assist cylinder for top flip up door
  358. 500efi head gasket
  359. 496 ho drive coupler question
  360. Speedo hook up?
  361. Tachs not getting signal from smartcraft
  362. Engine swap question
  363. 454 blower update.
  364. Help - Merc 454 can only get to 3900 rpm wot
  365. weird distributor problems...
  366. 454 Mag MPI: Strange cold idle….almost sounds like a 330hp for a few minutes
  367. Wiring question on an engine swap
  368. Thermostat Questions - Notched Gasket?
  369. HaxbySpeed
  370. after market exhaust 350 mag mpi
  371. Need Someone Smarter Than Me
  372. Thru hull exhaust question
  373. What's the purpose of the shift bracket?
  374. 496 Position Sensors (Cam & Crank) Question
  375. oil pan related question
  376. installing transom assembly
  377. Questions on Engine Modification xm270hr cam
  378. B/W Tranny dipstick plug help
  379. well do i have the start of a trans prob
  380. Dry sump tanks
  381. What type are these switchable exhaust tips?
  382. Marine Machine steering cylinder seals
  383. 500 efi ECM and harness question
  384. Trim pump not sounding very good, Bravo 1 drive
  385. Tach acting strange??
  386. Thru Through Hull Transom Low Raw Water Engine Intercooler Pickup Grooves Channels
  387. how to convert to dry exhaust???
  388. Looking for performance increase in 454 magnum EFI and prop advice.
  389. Loose steering
  390. How much to fill antifreeze container in a 525?
  391. 496 HO Burning Pistons
  392. Flame Arrestor / Filter Elements
  393. Another fuel system setup question - fuel / water filter before or after mech pump?
  394. Let the guessing game begin as what broke in 502 mag EFI
  395. 3" vs. 4" thru hull exhaust
  396. Bilge Pump Question
  397. 98 502mag mpi surging
  398. cover bled hint of color onto white vinyl how to get out
  399. HP500 oil filter mount question
  400. Anyone used ggb inserts in dry tails.
  401. Cam intensity question
  402. 525efi Tach reading high
  403. How to get a little heat with crossovers...?
  404. Boat with shorties question
  405. Who has had issues with afr heads??
  406. Running two different styles of pickups on Bravo drives
  407. Fast ez-efi, holley terminator ?????
  408. Cobalt 342 motor troubles
  409. 525 EFI alarm 2800rpms
  410. How do I set timing with no marks on crank?
  411. 525 efi power loss
  412. Setting X dimension
  413. 525 EFI Too Much Water Pressure
  414. 7.4 lx efi falls on its face and hesitates
  415. Windshield Wiper wrist bayonet connector?
  416. 4 blade prop question
  417. 502 mag mpi?
  418. chicken or the egg, ECm or guage
  419. One for the gear heads.... or maybe a stupid question...
  420. Timing a delco voyager distributor
  421. adjusting valves with intake manifold installed?
  422. Both trim tab switches and drive trim switches not working
  423. Motor does not run right at low RPM
  424. Rudder Spacing From the Hull ??
  425. Flushing with thermostats (with holes drilled)
  426. K Plane hydraulic fitting available lengths? Part numbers? suppliers?
  427. 96' 502 mpi, low fuel pressure
  428. Stupid mistake - have I done any damage
  429. Testing an ignition module
  430. looking for drive shaft housing & bearings
  431. Water pressure question, Before I put it back together?
  432. Rochester question
  433. 525 EFI refresh lifter issue!!!
  434. Carburetor to EFI conversions
  435. what kind of boat is this
  436. 525 efi headers
  437. Has Anyone done high compression e85 motors on a big boat?
  438. TRS drive install
  439. 500 EFI noob help
  440. Detonation melted my piston..... but what caused the detonation?
  441. 1991 Baja steering problem
  442. What fuel pump for a 502 making 600+hp.
  443. 2003 evinrude 115hp 2atroke outboard
  444. cam info needed
  445. zero out tach
  446. What gasket surface cleaner?
  447. Cometic gasket surface RA
  448. 26 hustler vs 25 active thunder tantrum with similar power?
  449. 500efi head upgrades
  450. Merctrans linkage/brackets help (man-shift)
  451. What's a good price and will it work ?
  452. 502 burning up water pump impellors.
  453. vertical stack batteries
  454. Looking for proper Mercruiser service manual p/n's.......
  455. Closed Bow or Mid Cuddy open bow?
  456. Cleaning under trailer bunks
  457. 2 stage sea pump rebuild
  458. 496ho Impeller question
  459. Wasted Bravo 1 swivel shaft/steering pin?
  460. Dual water temp sending units on HP500??
  461. crossover on hp500
  462. upgrading to 33c cables
  463. Crossover temp problem HELP
  464. Dual Ram Power Steering Issues
  465. CMI dealer
  466. O2 Sensor in Riser
  467. Recommended fuel line sizes to support NA 575 HP
  468. y pipe diffrence
  469. Holley carb paint / powdercoat suggestions
  470. Need an answer to back pressure
  471. Blower carbs what to run ?
  472. Ok, Ok, I need a new steering wheel...
  473. Dropped a valve!!!!!!!
  474. Bravo Drive Coupler Grease Cup?
  475. Livorsi / Vessel View / Vantage View ? wanting to upgrade dash
  476. What size is a 86 cig mistress 35??
  477. Are outboards really that much cheaper to run?
  478. need help with a simple wiring issue
  479. 496 or 502??
  480. Power Shift
  481. 500 Efi fuel pressure regulator?
  482. Bouncing Tach, need more suggestions already searched! Confused!
  483. H2x vs donzi
  484. hp500 distributor fit on 500efi
  485. oil temp
  486. Lift points on a '83 Scarab 377
  487. Help with new 540 flywheel selection!
  488. 454 MPI Random Power Loss
  489. Bravo Trim ram - only one working?
  490. Fuel pump Q?
  491. What is wrong with these head gaskets
  492. aftermarket alum heads..clear 454 mag piston domes?
  493. 454 mag mpi lack of power? Idles and revs fine, no miss
  494. How often do your routinely clean your air intake(s)
  495. Speedometer pickup?
  496. Spintron
  497. velvet a73c
  498. 525 water pressure problem
  499. BBC Engine missing side caps?
  500. Morel 4603 lifter noise