View Full Version : General Q & A




  1. Is GM Vortec 454 essentially the same thing as the 300-HP L29 7.4L?
  2. I.T.S. and imco stand off boxs question
  3. optima batterys
  4. How easy to go dual hydraulic steering from single?
  5. Bimini top suggestions
  6. Mercury 800 SC's has no boost,Why?
  7. Through hull water pickup help
  8. AFR 290 VS DART Pro 1 head
  9. Ridiculous marine pricing on IAC valve
  10. Stock valve covers with AFR heads and full roller rockers
  11. Mr Gadgets, Dick tryce
  12. Reistering boat with USCG (In Illinois)
  13. leaking imco risers
  14. what should the sea water pump pressure sensor read on a 496
  15. Gen VI oil pressure reliefs/bypass
  16. Exhaust leak
  17. tailpipe wall thickness?
  18. Wet Exhaust/Steam
  19. 502 mag dumping fuel out exhaust..
  20. Towing 11,500 LB Donzi FL to MI - Tips
  21. 502 MPI engine stalling
  22. Bravo XR Trim Indicator Help Needed
  23. buttons for the out drive trim
  24. 496 fault codes help
  25. Corsa captains call power question
  26. 496 mag, double beep alarm every 60 seconds. Code 37 sea pump pressure low.
  27. Drive showers
  28. Want to put in a electric fuel pump..have questions..
  29. steering ram leaking
  30. 300vx flush kit
  31. header fitment
  32. Water leaking from exhaust y-pipe coupler?
  33. What not to do with exhaust.
  34. Need help! Raw sea water pump
  35. presssure testing exhaust ?
  36. sealer for cockpit floor ?
  37. Correct values map sensor 496 ho ?
  38. Mercruiser 496 MPI running borderline hot....
  39. Exhaust manifold and risers ok? 454 MAG MPI's
  40. Water pressure gage input
  41. 1999 502 Mag Stumble and Back Fire After Long Run Time
  42. SAT Radio Antenna Wire Question
  43. Chris Craft Cooling
  44. Repairing Gimbal Rings
  45. exhaust temperature on 525
  46. circulating pump
  47. Saltwater Flushing
  48. Procharging 454mags ??
  49. Alternatives to Procharger intercooler
  50. Boat not sitting on all trailer bunks?
  51. Old School 425 hp Coupler Question
  52. 350 Mag cooling issues HELP
  53. What fluid for trim?
  54. Please help with spark plug question on 572's
  55. Would like some input from the pro's on Carb jetting for 489 with AFR's
  56. Wiring diagram for starter lugs and slave solenoid?
  57. 350 SBC Carb Size questions
  58. 496 HO intermittently not starting back up after running it.
  59. 502EFI excessive advance
  60. Coolant temp sensor question?
  61. 496 ho bottem end strength
  62. How can you tell the diff in a bravo and an XR bravo ?
  63. IMCO Hydraulic Steering Bushings
  64. 454 carb thunderbolt IV... timing all over??
  65. 454 7.4 mpi sea pump picture what do you think???
  66. Northstar muffler rebuild kits
  67. new baja owner, blown motor , need advice please.
  68. CMI E-Top Install on 496 Mag
  69. Cuting off problem
  70. MSD ready to run distributrs? good or bad???
  71. 496 w/Whipple rebuild specs & clearances
  72. 525 help
  73. Planning to repower my 292 Fastech
  74. 454 mag mpi inboard stalling when put in neutral intermittently
  75. Stainless Marine Exh Manifolds, will they work with 700 hp engine build?
  76. Water pressure at idle?
  77. Cavitation & Overheating - Possibly related ?
  78. K Plane Parts
  79. 454 7.4 mpi l VI sea pump back flush question and help please
  80. 502 mag lack of power
  81. 525's Running Hot
  82. Has anyone seen Jerry Haney lately? Having trouble getting ahold of him.
  83. 525efi high idle after wot blasts
  84. Carb help
  85. Boat leans to port side when running..
  86. Gauges pegged?
  87. Broken sterndrive continuity screw.
  88. Strainers Leak - How to fix? (how to seal)
  89. New Add-on hydraulic steering issue
  90. Carb and 250 Blower VS Fuel Injection and Procharger
  91. merc raw water pump, 350 v8 engine driven. Water head height?
  92. 454 mpi merc oil cleaner when doing oil change??
  93. CMI E-Tops
  94. Kenwood Wired Remote Installation
  95. Need help figuring out intermittent starter issue after engine swap
  96. Possibly Selling The Boat ???'s
  97. Raptor performance & replacement engines
  98. 454 base timing
  99. Question on books for SBC marine builds
  100. Engine harness complete??
  101. Exhaust / cam question
  102. Tach flickering key on not running.... 454 carb
  103. Another Help on Cam Choice Thread
  104. Hotspots on engine
  105. Running hot vs cold plug under boost?
  106. Basset Header ?
  107. HELP! Questions on which Thermostat housing to use with EMI exhaust?
  108. Steering Issue on Checkmate 253
  109. What boat is this?
  110. ZZ502 few questions???
  111. KE 2 piece valve covers LEAK!
  112. imco powerflow exhaust revrsion
  113. Loose steering on a Formula
  114. Bent/broke push rod or broken valve spring or??? also carb issue stock 454
  115. Engine bogging after jumping waves
  116. need pro carb setting info
  117. 496 ho IAC problems what now?
  118. Who's running fuel press regulators with carbs?
  119. potential dangerous issue / fuel tank snding unit
  120. Oil and Water leaking on 496 MAG?
  121. 496HO missing at high RPM
  122. timing chain?
  123. What would cause my hydro lock???
  124. Solid roller lash check
  125. sea water pump hose connection
  126. Changing Supercharger Oil
  127. 2005 496HO MAX 4000 RPMs
  128. Adding a fuel press regulator
  129. Water Pressure/525 EFI with a Whipple
  130. Want to add an Hour Meter
  131. Marine Upholstery
  132. HP500 Small Gear Reduction Starters
  133. 1991 eliminator daytona fells like i am draging something at low speeds
  134. Wierd ignition issue....454 Thunderbolt IV
  135. 1995 502 will not go above 1800 rpms
  136. Power steering Hose thread dimensions
  137. Prop blowing out!
  138. fountain 10 meter oil temp please help
  139. Suction From Fuel Water Separating Filter
  140. New XR drives lower water pickups plugged with paint?
  141. Kill laynard....
  142. replaced engine now Alternator wont charge
  143. Any tips on removeing water from oil?
  144. Bravo XR props haft
  145. Fuel Rail?
  146. Gimbal bearing driver Alpha 1
  147. IAC for Whipple 2.3
  148. comparison, Eliminator vs Bryant
  149. Pistons.......... Not even JE can help.
  150. What is this hose that broke off my Bravo 1 gimbal? (pic)
  151. prop / engine question
  152. Elec and mechanical fuel pumps
  153. Stock Weber Carb changes for Engine upgrades ?
  154. ME3 alarm sensors broken
  155. Exhaust riser gasket
  156. Boat performance changes?!
  157. 496 ho with boost? reliable?
  158. Difference in HP500 Ignition Modules by year...???
  159. Muffler Recommendations
  160. ProCharged 502 Checkmate Prop
  161. Add on hydraulic steering issue
  162. no spark
  163. Oil Pick Up Part # for 454 gen IV mag (have the melling oil pump already) Thx
  164. Whats the deal who is who..?
  165. nos on a boat?
  166. Canton offshore pan, what's the bracket for?
  167. k planes and hyd. steering
  168. help with deciding on a new boat
  169. Thinking of making the bulkhead between the cockpit and the engines removable....
  170. transom u bolts
  171. Better to make more power from 3K - 5K, or 4K - 5500?
  172. Engine harness adapter 10-14pin
  173. Starter bolt holes
  174. I need some prop advice after doubleing horse power.
  175. Part identification
  176. 496 won't start
  177. Top mounting starter for a bravo one?
  178. 502 MAG MPI lacking power
  179. Transducer question
  180. Formula 302 LS Repower Questions
  181. B&m 250 efi mercruiser supercharger no power/limp mode?
  182. What sealing procedure to use for ARP head studs in water jackets?
  183. Starter solenoid
  184. Bad Lifter?
  185. livorsi gps speedo ?
  186. 496 ho sea pump
  187. Fuel pressure sensors
  188. Dry exhaust
  189. Torque spec for Gen VI oil filter adapter?
  190. Merc trim Tab Ram removal.
  191. hydraulic lines
  192. High oil temperature ?
  193. Who has red underwater LEDs and / or red LED interior lights?
  194. Water temp issue (help)
  195. Valvetrain noise in new engines
  196. How to tell what cam and lifters are in my 502
  197. starter bolt torque
  198. Cool Fuel consumption ap for Mercury engines
  199. New engine disaster need engine guru help!
  200. XR DWP vs LWP
  201. Looking for advice on 454 or 502
  202. motor knocking after tune up
  203. Remove baffles fromthru hull
  204. OK...i got shocked by my throttles today.....HELP!!
  205. Adding Silent Choice
  206. SS Bow Protector
  207. 454 mag mpi blew out spark plug and now has top end taping!!
  208. mercruiser engine alarm buzzer
  209. Need Help, Electrical mystery.
  210. Blower carbs???
  211. carb jeting question
  212. 502 Dies
  213. Octane questions
  214. Mercruiser 496 plug wires???
  215. Quick 383 build question
  216. Anybody tried to drill and tap brass inserts?
  217. TRS Anodes
  218. 2000 Formula Fastech Blows shore GFI when main boat AC breaker is flipped on - HELP!
  219. Question on Bravo lower
  220. Anyone have a pic of a merc throttle cable converted to a work on a Holley carb?
  221. Aluminum 496 manifolds - bolt hardware
  222. Best prop for carrying loads?
  223. Remote power steering reservoir pump cap for old style pump?
  224. Engine Help
  225. trying to understand what exhaust is needed and why
  226. Tach jumps all over
  227. CNY Repair Shops??
  228. We need a after market performance engine section.
  229. 0 oil pressure
  230. Water Pressure/Volume Problem.. .Help
  231. Good cleaner and protector ?
  232. DId I do something wrong?
  233. GAffrig gauge senders?
  234. looking for a 502 mag. short block or long block
  235. Bravo One Lower Unit question
  236. Best top mount starter
  237. No Power to dash or engine
  238. Boat dies when put into gear... Need help!
  239. Air /fuel ratio in super charged 540
  240. WTF is wrong that I cant post
  241. What's up with DONZIDICECT.COM??
  242. Boat engine hatch stitching coming apart
  243. 1999 502 Mag Runs at 100* Need some help...
  244. new blower motor shuts off after being run at speed
  245. Corsa Switchable opeation
  246. Volvo Dual Prop Alignment
  247. hydraulic engine hatch lift cylinder question
  248. gen VI oil filter sandwich adapter
  249. Anyone ever had a crack or weap hole in a new set of World iron heads?
  250. Water in #7? and milky oil. Need Ideas
  251. edelbrock victor jr heads leaking water
  252. Rollmaster gen 6 timing set no fit??
  253. DIACOM Marine question
  254. Name that failure!
  255. Water in merc trans ( trs drive)
  256. Trash In Fuel Filter? Areomotive Pukeing? or
  257. Valvoline Vr1 racing oil
  258. Hardin Marine Fuel Sender
  259. Beeping from boat
  260. IMCO hydraulic steering fluid?
  261. What exhaust gasket for AFR heads?
  262. Fresh 454 engine build which carb should I run?
  263. red w purple stripe or red w/black stripe
  264. 1999 Volvo Penta SBC won't start...weak spark?
  265. Swapping out my quadrajet for a holley 4160 or 4150 carb ''CARB GUYS COME ON IN''
  266. Oil temp, oil coolers, water temp and pressure advice.
  267. Blow Through Carburetors
  268. Motor back in and rear main leak !
  269. no power tomain red wire, or starter . help me please.
  270. Looking For Oil recomendation
  271. Motor Tight
  272. Rebuilding my 99 Baja 502 Mag MPI
  273. Alarm sounding, 502 MAG MPI....
  274. Where is my oil hideing?
  275. Blower Motor seems fuel starved
  276. Head gaskets
  277. Fastest Single engine V
  278. 525's Running Hot
  279. Does My Oil Filter On My 496 HO Mags Have An Anti-Drain Back Valve?
  280. fuel tank sending unit depth
  281. Transmission Cooler sizing BW 72C
  282. ARP Stainless exhaust bolts - 496 exhaust manifolds ?
  283. CMI Rep
  284. eddie marine??????
  285. Lost oil pressure and then a broken starter bolt
  286. 496 low end knock / rattle - need help
  287. Oildyne trim pump replacement motor?
  288. 575sci.... Fresh water cooling...... Anyone ?
  289. Push-On hose for fuel plumbing?
  290. power trim guage
  291. 496 HO PCM Re-Flash
  292. 26 corsa
  293. spark plug heat range selection
  294. Quicksilver mirage prop question
  295. Stainless steel Sea Pump
  296. low WOT on mercruiser 5.7 with 19p prop
  297. Issues after 502 Mag MPI swap in my 2000 Baja 272
  298. 93 502 mag power steering cooler
  299. Import a boat from Canada to the US
  300. fuel flow issues
  301. Should I change my oil?
  302. Mobil 1 V-Twin 20-50 Full Synthetic Oil
  303. Who does Vinyl Wrap ?
  304. relocating exhaust tips/header change
  305. Insurance Company Denies Claim - HELP!!
  306. Will these Corsa muffled tips create too much back pressure?
  307. New 502 block bore
  308. Blow through carb vers regular?
  309. Building my first boat engine.
  310. running boat without water for cooling? How long?
  311. 496 supercharged - oil type?
  312. oil thermostat housing and cooler priming
  313. Another Cam and reversion ? but also risers and exhaust ?
  314. Fountain K Plane Trim Solenoids
  315. Water reversion camshaft question
  316. Exhaust Valve Guide Clearance
  317. 415 hp 502 efi engine temp
  318. water jacket sealant
  319. Big block Chevy 454 Gen V cutawy drawing
  320. U-joint froze on my TRS. What part number to replace it?
  321. How to remove exhaust hose?
  322. Is it worth putting coolant hoses back to front on a 4 corner intake manifold
  323. Bravo 1 upper/lower compatibility
  324. Help with ?'s
  325. Gimbal boot ring
  326. power steering actuator and high pressure line
  327. Smartcraft System View Race Edition Help
  328. 500efi, exhaust question
  329. whipple 525 ecm flash
  330. Help with HTM
  331. drive fluid in bilge
  332. Ready to run distributors
  333. Play in Steering Wheel
  334. Switching from carb to 525's.questions?
  335. Carb box procharger
  336. Is it worth adding a PCV like on the HP500's?
  337. Will 454 risers bolt up to the 496 aluminum manifolds?
  338. wire color identification
  339. Bravo 1 gear lube capacity.
  340. Gaffrig Digital GPS speedo
  341. Carb needle material?
  342. mr gasket
  343. Is this a Bravo Drive?
  344. More Useful Information
  345. Any one know this boat?
  346. oil temp sender
  347. Dry exhaust flaps??
  348. Mr. Gasket
  349. 1988 Mark IV 454 Mag--500 rpm loss but its random
  350. Edelbrock Performer RPM Intake Manifold vs GM 6269318 marine intake
  351. Gen six 502 casting numbers
  352. do i need a 496 y pipe
  353. Where to buy neutral safety switch
  354. Lets talk mechanical fuel pumps
  355. Water pressure..draw off location?
  356. Exhaust question
  357. intake gasket
  358. where i can get this battery hold down bolt?
  359. MerCruiser 502 Mag MPI wont shut off....
  360. Help, Starter Issue
  361. idle is up at 2000 help
  362. Hydraulic Steering installation advice needed
  363. Fuel Return
  364. Stock 502 carb questions
  365. intake gasket
  366. 525 question
  367. Can anyone identify this fuel pump?
  368. External Steering
  369. Audio: Feedback through Amplifier with Trim
  370. Buzzing Electric Fule Pump
  371. 320EFI timing mode. HELP!
  372. VST tank vent. Will this work? pics
  373. port tab wont go down..
  374. To bypass or not to bypass...
  375. help with cam shaft 454
  376. Gen V Big block oil cooler help
  377. Broken 454, options?
  378. new help intake and carb setup
  379. Trim switch not working
  380. sea pump hose size
  381. gear lube
  382. Distributor not dropping down
  383. 525 efi power sterring pump
  384. Where can I get hatch mirrors
  385. Moving Fuel Filter
  386. Oil Pump shaft length?
  387. drive alignment questions
  388. Mercury Side Mount Control - Trailer Button
  389. driving a boat question
  390. drive indicator
  391. engine i.d. 454
  392. Hyd steering install help
  393. put in new motor, mounts not lining up
  394. 496HO 2003/ forged internals???
  395. Oil Press and VM Gauge
  396. Speedometer Hose Blew Off Thought Boat Was Sinking!!!
  397. Alarm Advise - for driveway, traveling by road & anchoring - need advise
  398. Looking for TRS Bellow part numbers 60932A4 or 54406A 1
  399. Dipstick tube extend to bottom of pan? Merc 420's
  400. 502 mpi running on 4 cylinders
  401. 500efi mysterious plug..?
  402. Can this distributor & coil be used on a carbed engine?
  403. Hyd. steering question? Need some help guys.
  404. HP 500 Bulldog
  405. So how many batteries can you safely charge??
  406. what oil in a whipple
  407. Erratic Vaccuum readings
  408. HP500 Cylinder Head Bolt Torque Spec
  409. More 575sci build questions
  410. Dual cable steering on 98 25' Outlaw
  411. Engine alignment needed?
  412. distributor
  413. Strange "dotted" pattern on valve seats and faces
  414. transom / exhaust rubber seals?
  415. help needed identifying Scarab trim tabs
  416. upolstrey shop in NE Maryland or Central P
  417. 350 mpi horizon low water pressure. on port side
  418. Captain Call Wires
  419. Do you really need hard anodizing in fresh water?
  420. need External hydro direction?
  421. What are the Standard Specs for Hp500 Cylinder Heads
  422. need adjustable FPR on 496ho raylar103kit ?
  423. Mercury Racing QCV4 - difference in length between 700 and 1350?
  424. Rebuild number for dominator carb on 540 bulldog
  425. What to do with old gas?
  426. Transom Exhaust Rings??
  427. Hex or blade oil pump driveshaft???
  428. Looking for blower belt
  429. Hardin Marine 2 stage stainless seawater pump
  430. Another 502 mag efi not starting. Tons of tests have been preformed.injectors fried?
  431. Back from the dead - and so is my boat...
  432. flywheel question."help"
  433. chiller plumbing advice needed
  434. Oil Capacity in 7.4 Mercruiser
  435. How do I get the top off this Holley carb?
  436. torque spect
  437. Valve cover gasket number for 525efi?
  438. Winter upgrades...what has everyone else been doing? Post pics, videos, etc....
  439. Merc Trim sender/limiter wiring help
  440. Sea water flow?
  441. Eddie Marine step pads
  442. valve spring compressor
  443. "Xtreme" remote thermostat
  444. cost to rebuild 500 EFI
  445. 454 mercruiser borg warner TR2 starter issues
  446. MERC 95 350 TBI injectors not working
  447. milky oil
  448. Best sealant for through haul fittings
  449. Front Cylinders not Firing
  450. Mercruiser engine questions
  451. Crane 168731 reversion?
  452. SmartCraft SC1000 gauges
  453. hatch actuators
  454. exhaust tips
  455. Dremel, which one?
  456. OK to run head studs along with head bolts?
  457. 496 intake deposits
  458. questions about 500 EFI's
  459. Through Hull Water Pickups ?
  460. max timing on 454mag MPI's
  461. Oil pressure gauge issue
  462. Bravo 3 trim strangeness...
  463. Small block or big block 30ft range ?
  464. mayfair steering problem....new install. Help needed
  465. Need HELP with correct prop nut\kit
  466. Need help raising fuel pressure
  467. head stud nuts
  468. Power assist steering pump needed
  469. K-Plane wiring diagram
  470. Squeaky Sea pump
  471. 502 Exhaust manifold gaskets - Replace?
  472. Blue smoke at idle
  473. Black silicone exhaust hose
  474. water water water
  475. 454 MPI Fuel Pump Issues, Pump not getting power
  476. open bow cat
  477. ???Can 250 chillers be modified to work with 177???
  478. 525efi coolant reservoir cover
  479. Gimble rings
  480. Helm Pump advice for #6 drives Please
  481. Cam / Exhaust question
  482. hello newbie here with a 22' stingray
  483. what are these tank fitting?? want to add return line!
  484. Purple gauge lights or boots
  485. Ignition/Distributor upgrade? Little help...
  486. Carpet for a 24 outlaw?
  487. 72c velvet drive borg warner where to buy rebuild kit
  488. PLUG GAP....what should it be?
  489. carb to efi
  490. holley commnder 950 efi
  491. Newb here from TX!!
  492. Stuck Tailstock on Wetsump #6
  493. Drive alignment on extension box?
  494. ZZ502 pushrod question
  495. 575 rebuild
  496. turning up 600sc's
  497. Remove Bearing in XR Gears?
  498. whipple adapter plate question
  499. 502 ignition rotor
  500. new engine