View Full Version : General Q & A




  1. 496 stroker jetting questions
  2. NMEA 2000 actuators?
  3. Figured out rpm surge but need some advice
  4. Can someone please tell me what boat this is?
  5. what is this amplifier/rectifier looking thing?
  6. 525efi 600sci and 700sci Heads... are they all the same???
  7. Snap on timing gun on 502 mag??
  8. Fuel pump fitting size 525sc
  9. 454 to 502 engine swap reused TB5 from 454 and im having ignition problems...i think
  10. problem with dual ram tab
  11. Merc 525 header bolt torque??
  12. BBC 540 performance upgrade ?'s
  13. Gaffrig Tachs/Smartcraft acting up
  14. Mechanical fuel pump on a fuel injected 454ci?
  15. ecm relocation
  16. 496 Oil Cooler, where to buy!
  17. Whipple VS Procharger
  18. Is GM Vortec 454 essentially the same thing as the 300-HP L29 7.4L?
  19. I.T.S. and imco stand off boxs question
  20. optima batterys
  21. How easy to go dual hydraulic steering from single?
  22. Bimini top suggestions
  23. Mercury 800 SC's has no boost,Why?
  24. Through hull water pickup help
  25. AFR 290 VS DART Pro 1 head
  26. Ridiculous marine pricing on IAC valve
  27. Stock valve covers with AFR heads and full roller rockers
  28. Mr Gadgets, Dick tryce
  29. Reistering boat with USCG (In Illinois)
  30. leaking imco risers
  31. what should the sea water pump pressure sensor read on a 496
  32. Gen VI oil pressure reliefs/bypass
  33. Exhaust leak
  34. tailpipe wall thickness?
  35. Wet Exhaust/Steam
  36. 502 mag dumping fuel out exhaust..
  37. Towing 11,500 LB Donzi FL to MI - Tips
  38. 502 MPI engine stalling
  39. Bravo XR Trim Indicator Help Needed
  40. buttons for the out drive trim
  41. 496 fault codes help
  42. Corsa captains call power question
  43. 496 mag, double beep alarm every 60 seconds. Code 37 sea pump pressure low.
  44. Drive showers
  45. Want to put in a electric fuel pump..have questions..
  46. steering ram leaking
  47. 300vx flush kit
  48. header fitment
  49. Water leaking from exhaust y-pipe coupler?
  50. What not to do with exhaust.
  51. Need help! Raw sea water pump
  52. presssure testing exhaust ?
  53. sealer for cockpit floor ?
  54. Correct values map sensor 496 ho ?
  55. Mercruiser 496 MPI running borderline hot....
  56. Exhaust manifold and risers ok? 454 MAG MPI's
  57. Water pressure gage input
  58. 1999 502 Mag Stumble and Back Fire After Long Run Time
  59. SAT Radio Antenna Wire Question
  60. Chris Craft Cooling
  61. Repairing Gimbal Rings
  62. exhaust temperature on 525
  63. circulating pump
  64. Saltwater Flushing
  65. Procharging 454mags ??
  66. Alternatives to Procharger intercooler
  67. Boat not sitting on all trailer bunks?
  68. Old School 425 hp Coupler Question
  69. 350 Mag cooling issues HELP
  70. What fluid for trim?
  71. Please help with spark plug question on 572's
  72. Would like some input from the pro's on Carb jetting for 489 with AFR's
  73. Wiring diagram for starter lugs and slave solenoid?
  74. 350 SBC Carb Size questions
  75. 496 HO intermittently not starting back up after running it.
  76. 502EFI excessive advance
  77. Coolant temp sensor question?
  78. 496 ho bottem end strength
  79. How can you tell the diff in a bravo and an XR bravo ?
  80. IMCO Hydraulic Steering Bushings
  81. 454 carb thunderbolt IV... timing all over??
  82. 454 7.4 mpi sea pump picture what do you think???
  83. Northstar muffler rebuild kits
  84. new baja owner, blown motor , need advice please.
  85. CMI E-Top Install on 496 Mag
  86. Cuting off problem
  87. MSD ready to run distributrs? good or bad???
  88. 496 w/Whipple rebuild specs & clearances
  89. 525 help
  90. Planning to repower my 292 Fastech
  91. 454 mag mpi inboard stalling when put in neutral intermittently
  92. Stainless Marine Exh Manifolds, will they work with 700 hp engine build?
  93. Water pressure at idle?
  94. Cavitation & Overheating - Possibly related ?
  95. K Plane Parts
  96. 454 7.4 mpi l VI sea pump back flush question and help please
  97. 502 mag lack of power
  98. 525's Running Hot
  99. Has anyone seen Jerry Haney lately? Having trouble getting ahold of him.
  100. 525efi high idle after wot blasts
  101. Carb help
  102. Boat leans to port side when running..
  103. Gauges pegged?
  104. Broken sterndrive continuity screw.
  105. Strainers Leak - How to fix? (how to seal)
  106. New Add-on hydraulic steering issue
  107. Carb and 250 Blower VS Fuel Injection and Procharger
  108. merc raw water pump, 350 v8 engine driven. Water head height?
  109. 454 mpi merc oil cleaner when doing oil change??
  110. CMI E-Tops
  111. Kenwood Wired Remote Installation
  112. Need help figuring out intermittent starter issue after engine swap
  113. Possibly Selling The Boat ???'s
  114. Raptor performance & replacement engines
  115. 454 base timing
  116. Question on books for SBC marine builds
  117. Engine harness complete??
  118. Exhaust / cam question
  119. Tach flickering key on not running.... 454 carb
  120. Another Help on Cam Choice Thread
  121. Hotspots on engine
  122. Running hot vs cold plug under boost?
  123. Basset Header ?
  124. HELP! Questions on which Thermostat housing to use with EMI exhaust?
  125. Steering Issue on Checkmate 253
  126. What boat is this?
  127. ZZ502 few questions???
  128. KE 2 piece valve covers LEAK!
  129. imco powerflow exhaust revrsion
  130. Loose steering on a Formula
  131. Bent/broke push rod or broken valve spring or??? also carb issue stock 454
  132. Engine bogging after jumping waves
  133. need pro carb setting info
  134. 496 ho IAC problems what now?
  135. Who's running fuel press regulators with carbs?
  136. potential dangerous issue / fuel tank snding unit
  137. Oil and Water leaking on 496 MAG?
  138. 496HO missing at high RPM
  139. timing chain?
  140. What would cause my hydro lock???
  141. Solid roller lash check
  142. sea water pump hose connection
  143. Changing Supercharger Oil
  144. 2005 496HO MAX 4000 RPMs
  145. Adding a fuel press regulator
  146. Water Pressure/525 EFI with a Whipple
  147. Want to add an Hour Meter
  148. Marine Upholstery
  149. HP500 Small Gear Reduction Starters
  150. 1991 eliminator daytona fells like i am draging something at low speeds
  151. Wierd ignition issue....454 Thunderbolt IV
  152. 1995 502 will not go above 1800 rpms
  153. Power steering Hose thread dimensions
  154. Prop blowing out!
  155. fountain 10 meter oil temp please help
  156. Suction From Fuel Water Separating Filter
  157. New XR drives lower water pickups plugged with paint?
  158. Kill laynard....
  159. replaced engine now Alternator wont charge
  160. Any tips on removeing water from oil?
  161. Bravo XR props haft
  162. Fuel Rail?
  163. Gimbal bearing driver Alpha 1
  164. IAC for Whipple 2.3
  165. comparison, Eliminator vs Bryant
  166. Pistons.......... Not even JE can help.
  167. What is this hose that broke off my Bravo 1 gimbal? (pic)
  168. prop / engine question
  169. Elec and mechanical fuel pumps
  170. Stock Weber Carb changes for Engine upgrades ?
  171. ME3 alarm sensors broken
  172. Exhaust riser gasket
  173. Boat performance changes?!
  174. 496 ho with boost? reliable?
  175. Difference in HP500 Ignition Modules by year...???
  176. Muffler Recommendations
  177. ProCharged 502 Checkmate Prop
  178. Add on hydraulic steering issue
  179. no spark
  180. Oil Pick Up Part # for 454 gen IV mag (have the melling oil pump already) Thx
  181. Whats the deal who is who..?
  182. nos on a boat?
  183. Canton offshore pan, what's the bracket for?
  184. k planes and hyd. steering
  185. help with deciding on a new boat
  186. Thinking of making the bulkhead between the cockpit and the engines removable....
  187. transom u bolts
  188. Better to make more power from 3K - 5K, or 4K - 5500?
  189. Engine harness adapter 10-14pin
  190. Starter bolt holes
  191. I need some prop advice after doubleing horse power.
  192. Part identification
  193. 496 won't start
  194. Top mounting starter for a bravo one?
  195. 502 MAG MPI lacking power
  196. Transducer question
  197. Formula 302 LS Repower Questions
  198. B&m 250 efi mercruiser supercharger no power/limp mode?
  199. What sealing procedure to use for ARP head studs in water jackets?
  200. Starter solenoid
  201. Bad Lifter?
  202. livorsi gps speedo ?
  203. 496 ho sea pump
  204. Fuel pressure sensors
  205. Dry exhaust
  206. Torque spec for Gen VI oil filter adapter?
  207. Merc trim Tab Ram removal.
  208. hydraulic lines
  209. High oil temperature ?
  210. Who has red underwater LEDs and / or red LED interior lights?
  211. Water temp issue (help)
  212. Valvetrain noise in new engines
  213. How to tell what cam and lifters are in my 502
  214. starter bolt torque
  215. Cool Fuel consumption ap for Mercury engines
  216. New engine disaster need engine guru help!
  217. XR DWP vs LWP
  218. Looking for advice on 454 or 502
  219. motor knocking after tune up
  220. Remove baffles fromthru hull
  221. OK...i got shocked by my throttles today.....HELP!!
  222. Adding Silent Choice
  223. SS Bow Protector
  224. 454 mag mpi blew out spark plug and now has top end taping!!
  225. mercruiser engine alarm buzzer
  226. Need Help, Electrical mystery.
  227. Blower carbs???
  228. carb jeting question
  229. 502 Dies
  230. Octane questions
  231. Mercruiser 496 plug wires???
  232. Quick 383 build question
  233. Anybody tried to drill and tap brass inserts?
  234. TRS Anodes
  235. 2000 Formula Fastech Blows shore GFI when main boat AC breaker is flipped on - HELP!
  236. Question on Bravo lower
  237. Anyone have a pic of a merc throttle cable converted to a work on a Holley carb?
  238. Aluminum 496 manifolds - bolt hardware
  239. Best prop for carrying loads?
  240. Remote power steering reservoir pump cap for old style pump?
  241. Engine Help
  242. trying to understand what exhaust is needed and why
  243. Tach jumps all over
  244. CNY Repair Shops??
  245. We need a after market performance engine section.
  246. 0 oil pressure
  247. Water Pressure/Volume Problem.. .Help
  248. Good cleaner and protector ?
  249. DId I do something wrong?
  250. GAffrig gauge senders?
  251. looking for a 502 mag. short block or long block
  252. Bravo One Lower Unit question
  253. Best top mount starter
  254. No Power to dash or engine
  255. Boat dies when put into gear... Need help!
  256. Air /fuel ratio in super charged 540
  257. WTF is wrong that I cant post
  258. What's up with DONZIDICECT.COM??
  259. Boat engine hatch stitching coming apart
  260. 1999 502 Mag Runs at 100* Need some help...
  261. new blower motor shuts off after being run at speed
  262. Corsa Switchable opeation
  263. Volvo Dual Prop Alignment
  264. hydraulic engine hatch lift cylinder question
  265. gen VI oil filter sandwich adapter
  266. Anyone ever had a crack or weap hole in a new set of World iron heads?
  267. Water in #7? and milky oil. Need Ideas
  268. edelbrock victor jr heads leaking water
  269. Rollmaster gen 6 timing set no fit??
  270. DIACOM Marine question
  271. Name that failure!
  272. Water in merc trans ( trs drive)
  273. Trash In Fuel Filter? Areomotive Pukeing? or
  274. Valvoline Vr1 racing oil
  275. Hardin Marine Fuel Sender
  276. Beeping from boat
  277. IMCO hydraulic steering fluid?
  278. What exhaust gasket for AFR heads?
  279. Fresh 454 engine build which carb should I run?
  280. red w purple stripe or red w/black stripe
  281. 1999 Volvo Penta SBC won't start...weak spark?
  282. Swapping out my quadrajet for a holley 4160 or 4150 carb ''CARB GUYS COME ON IN''
  283. Oil temp, oil coolers, water temp and pressure advice.
  284. Blow Through Carburetors
  285. Motor back in and rear main leak !
  286. no power tomain red wire, or starter . help me please.
  287. Looking For Oil recomendation
  288. Motor Tight
  289. Rebuilding my 99 Baja 502 Mag MPI
  290. Alarm sounding, 502 MAG MPI....
  291. Where is my oil hideing?
  292. Blower Motor seems fuel starved
  293. Head gaskets
  294. Fastest Single engine V
  295. 525's Running Hot
  296. Does My Oil Filter On My 496 HO Mags Have An Anti-Drain Back Valve?
  297. fuel tank sending unit depth
  298. Transmission Cooler sizing BW 72C
  299. ARP Stainless exhaust bolts - 496 exhaust manifolds ?
  300. CMI Rep
  301. eddie marine??????
  302. Lost oil pressure and then a broken starter bolt
  303. 496 low end knock / rattle - need help
  304. Oildyne trim pump replacement motor?
  305. 575sci.... Fresh water cooling...... Anyone ?
  306. Push-On hose for fuel plumbing?
  307. power trim guage
  308. 496 HO PCM Re-Flash
  309. 26 corsa
  310. spark plug heat range selection
  311. Quicksilver mirage prop question
  312. Stainless steel Sea Pump
  313. low WOT on mercruiser 5.7 with 19p prop
  314. Issues after 502 Mag MPI swap in my 2000 Baja 272
  315. 93 502 mag power steering cooler
  316. Import a boat from Canada to the US
  317. fuel flow issues
  318. Should I change my oil?
  319. Mobil 1 V-Twin 20-50 Full Synthetic Oil
  320. Who does Vinyl Wrap ?
  321. relocating exhaust tips/header change
  322. Insurance Company Denies Claim - HELP!!
  323. Will these Corsa muffled tips create too much back pressure?
  324. New 502 block bore
  325. Blow through carb vers regular?
  326. Building my first boat engine.
  327. running boat without water for cooling? How long?
  328. 496 supercharged - oil type?
  329. oil thermostat housing and cooler priming
  330. Another Cam and reversion ? but also risers and exhaust ?
  331. Fountain K Plane Trim Solenoids
  332. Water reversion camshaft question
  333. Exhaust Valve Guide Clearance
  334. 415 hp 502 efi engine temp
  335. water jacket sealant
  336. Big block Chevy 454 Gen V cutawy drawing
  337. U-joint froze on my TRS. What part number to replace it?
  338. How to remove exhaust hose?
  339. Is it worth putting coolant hoses back to front on a 4 corner intake manifold
  340. Bravo 1 upper/lower compatibility
  341. Help with ?'s
  342. Gimbal boot ring
  343. power steering actuator and high pressure line
  344. Smartcraft System View Race Edition Help
  345. 500efi, exhaust question
  346. whipple 525 ecm flash
  347. Help with HTM
  348. drive fluid in bilge
  349. Ready to run distributors
  350. Play in Steering Wheel
  351. Switching from carb to 525's.questions?
  352. Carb box procharger
  353. Is it worth adding a PCV like on the HP500's?
  354. Will 454 risers bolt up to the 496 aluminum manifolds?
  355. wire color identification
  356. Bravo 1 gear lube capacity.
  357. Gaffrig Digital GPS speedo
  358. Carb needle material?
  359. mr gasket
  360. Is this a Bravo Drive?
  361. More Useful Information
  362. Any one know this boat?
  363. oil temp sender
  364. Dry exhaust flaps??
  365. Mr. Gasket
  366. 1988 Mark IV 454 Mag--500 rpm loss but its random
  367. Edelbrock Performer RPM Intake Manifold vs GM 6269318 marine intake
  368. Gen six 502 casting numbers
  369. do i need a 496 y pipe
  370. Where to buy neutral safety switch
  371. Lets talk mechanical fuel pumps
  372. Water pressure..draw off location?
  373. Exhaust question
  374. intake gasket
  375. where i can get this battery hold down bolt?
  376. MerCruiser 502 Mag MPI wont shut off....
  377. Help, Starter Issue
  378. idle is up at 2000 help
  379. Hydraulic Steering installation advice needed
  380. Fuel Return
  381. Stock 502 carb questions
  382. intake gasket
  383. 525 question
  384. Can anyone identify this fuel pump?
  385. External Steering
  386. Audio: Feedback through Amplifier with Trim
  387. Buzzing Electric Fule Pump
  388. 320EFI timing mode. HELP!
  389. VST tank vent. Will this work? pics
  390. port tab wont go down..
  391. To bypass or not to bypass...
  392. help with cam shaft 454
  393. Gen V Big block oil cooler help
  394. Broken 454, options?
  395. new help intake and carb setup
  396. Trim switch not working
  397. sea pump hose size
  398. gear lube
  399. Distributor not dropping down
  400. 525 efi power sterring pump
  401. Where can I get hatch mirrors
  402. Moving Fuel Filter
  403. Oil Pump shaft length?
  404. drive alignment questions
  405. Mercury Side Mount Control - Trailer Button
  406. driving a boat question
  407. drive indicator
  408. engine i.d. 454
  409. Hyd steering install help
  410. put in new motor, mounts not lining up
  411. 496HO 2003/ forged internals???
  412. Oil Press and VM Gauge
  413. Speedometer Hose Blew Off Thought Boat Was Sinking!!!
  414. Alarm Advise - for driveway, traveling by road & anchoring - need advise
  415. Looking for TRS Bellow part numbers 60932A4 or 54406A 1
  416. Dipstick tube extend to bottom of pan? Merc 420's
  417. 502 mpi running on 4 cylinders
  418. 500efi mysterious plug..?
  419. Can this distributor & coil be used on a carbed engine?
  420. Hyd. steering question? Need some help guys.
  421. HP 500 Bulldog
  422. So how many batteries can you safely charge??
  423. what oil in a whipple
  424. Erratic Vaccuum readings
  425. HP500 Cylinder Head Bolt Torque Spec
  426. More 575sci build questions
  427. Dual cable steering on 98 25' Outlaw
  428. Engine alignment needed?
  429. distributor
  430. Strange "dotted" pattern on valve seats and faces
  431. transom / exhaust rubber seals?
  432. help needed identifying Scarab trim tabs
  433. upolstrey shop in NE Maryland or Central P
  434. 350 mpi horizon low water pressure. on port side
  435. Captain Call Wires
  436. Do you really need hard anodizing in fresh water?
  437. need External hydro direction?
  438. What are the Standard Specs for Hp500 Cylinder Heads
  439. need adjustable FPR on 496ho raylar103kit ?
  440. Mercury Racing QCV4 - difference in length between 700 and 1350?
  441. Rebuild number for dominator carb on 540 bulldog
  442. What to do with old gas?
  443. Transom Exhaust Rings??
  444. Hex or blade oil pump driveshaft???
  445. Looking for blower belt
  446. Hardin Marine 2 stage stainless seawater pump
  447. Another 502 mag efi not starting. Tons of tests have been preformed.injectors fried?
  448. Back from the dead - and so is my boat...
  449. flywheel question."help"
  450. chiller plumbing advice needed
  451. Oil Capacity in 7.4 Mercruiser
  452. How do I get the top off this Holley carb?
  453. torque spect
  454. Valve cover gasket number for 525efi?
  455. Winter upgrades...what has everyone else been doing? Post pics, videos, etc....
  456. Merc Trim sender/limiter wiring help
  457. Sea water flow?
  458. Eddie Marine step pads
  459. valve spring compressor
  460. "Xtreme" remote thermostat
  461. cost to rebuild 500 EFI
  462. 454 mercruiser borg warner TR2 starter issues
  463. MERC 95 350 TBI injectors not working
  464. milky oil
  465. Best sealant for through haul fittings
  466. Front Cylinders not Firing
  467. Mercruiser engine questions
  468. Crane 168731 reversion?
  469. SmartCraft SC1000 gauges
  470. hatch actuators
  471. exhaust tips
  472. Dremel, which one?
  473. OK to run head studs along with head bolts?
  474. 496 intake deposits
  475. questions about 500 EFI's
  476. Through Hull Water Pickups ?
  477. max timing on 454mag MPI's
  478. Oil pressure gauge issue
  479. Bravo 3 trim strangeness...
  480. Small block or big block 30ft range ?
  481. mayfair steering problem....new install. Help needed
  482. Need HELP with correct prop nut\kit
  483. Need help raising fuel pressure
  484. head stud nuts
  485. Power assist steering pump needed
  486. K-Plane wiring diagram
  487. Squeaky Sea pump
  488. 502 Exhaust manifold gaskets - Replace?
  489. Blue smoke at idle
  490. Black silicone exhaust hose
  491. water water water
  492. 454 MPI Fuel Pump Issues, Pump not getting power
  493. open bow cat
  494. ???Can 250 chillers be modified to work with 177???
  495. 525efi coolant reservoir cover
  496. Gimble rings
  497. Helm Pump advice for #6 drives Please
  498. Cam / Exhaust question
  499. hello newbie here with a 22' stingray
  500. what are these tank fitting?? want to add return line!