View Full Version : General Q & A




  1. 502 Mag Mpi Issue
  2. Nothing to do with boating - but giving your daughter away to her new husband
  3. Measuring Compression Ratio
  4. Any good internet dynos??
  5. Raylar 496 HO upgrades
  6. 502 500hp efi sumble /stall
  7. Good oil pressure sending unit
  8. Stock 330 fuel pump question
  9. Long or short risers needed for this cam?
  10. Mark IV 502 Mag Hole In Piston And No Oil Pressure Help!
  11. 1000 Islands Poker Run Who is going?
  12. I need 1 set of Stainless Marine Exhaust for a SBC. Who's got the best price?
  13. Sea water/fuel pump questions. Leaking oil.
  14. PowerQuset Interior Lights - HELP NEEDED
  15. Could backfiring cause this?
  16. 454 Cam selection down sizing?
  17. if i had water in bravo one fluid...
  18. csm with vinylester
  19. Mercury efi to holley efi. How to get the correct throttle throw.
  20. electric circulating pump??
  21. Iac for 97 454 mag MPI's part number anyone know.
  22. Q-jet jetting help please
  23. Exhaust Riser gasket?
  24. guys I need help please 496 ho surges almost dies...
  25. Helm joint replacement?
  26. Any A/C techs on Long Island?
  27. EMI Thunder Exhaust On Stock 6.2s
  28. Serpentine to v-belt
  29. Strange MPI problem....
  30. 525efi milk shake
  31. 350 mag miss HELP please
  32. engine fault code?
  33. What thermostat housing for closed cooling system??
  34. blowers
  35. Hard steering at speed..
  36. 502 mpi mods......
  37. Fuel Delivery Issues
  38. Need part # for seal on water pump.
  39. Another newbie prop question
  40. 1997 sv24 challenger boat
  41. MSD Distributor
  42. Help! Merc s/c seals & bushings
  43. Posting pictures with an I Pad
  44. Gen5 to gen 6 have had nothing but problems
  45. Need Torque specs for top two bolts on gimble
  46. 280 Tabs to 380 tabs
  47. Marine Machine Hardware
  48. Small water leak on a XR Drive
  49. Black hose water drain system 496 HO
  50. Solid Roller Cam Worth it??
  51. Weak Starting - Ground?
  52. HELP!! 1996 Baja 302 windshield broken!
  53. circulation pump failure???
  54. How much hp will this build produce
  55. Power steering not working replaced parts...?
  56. Motors marked "BRE 168" any ideas?
  57. square k planes
  58. Simple oil cooler upgrade
  59. Prob and drive height suggestions for Donzi 25zx w 625hp
  60. vacuum pump, blown big block
  61. Merc 502 efi code 23 iat censor
  62. 500 efi exhaust issues
  63. Aluminum Intake manifold + salt brackish water
  64. Mercruiser Automatic Transmission
  65. Where's oil thermostat on merc 525 please
  66. What's considered too much oil pressure?
  67. Melting exhaust boots but engine not running over 180!?!?
  68. milkshake clean up
  69. Spark Plug Gap
  70. Benefits of quad rotor
  71. Any Fast 22ft Stingrays maxims out there??
  72. Distributor housing oil boss
  73. Building a new trailer for a 87 Midnight express 37'. Need help!
  74. Cast crankshaft OK?
  75. Reversion possibility question on SBC with XM270HR cam
  76. Riser gaskets...which one?
  77. 502 MPI w/cool fuel return line fuel flow
  78. Best way to clean the outside of an engine covered in oil?
  79. Replacing MEFI1 with ?
  80. Mystery Piece of Stainless in my Exhaust Tip - please help identify
  81. 8.1 oil bypass valve
  82. Stainless vs brass sea pump
  83. Longevity MIG welder
  84. crane 741 cam and stock roller lifters
  85. 502 fuel injected spudders and dies randomly
  86. Mercrusier 350mag w/Bravo 1
  87. Silent Choice Exhaust not opening.
  88. 500 EFI Powersteering pump defect ???
  89. Pressure test headers question
  90. Trim Tab screws ...kinda came out ....?
  91. Cam recommendations for these heads?
  92. 525 vs 496HO
  93. 454 EFI making a sqealing sound
  94. Mini Starter
  95. Fuel level in cool fuel module 496 HO
  96. 38 Fountain Lightning Worth It or Not ?
  97. EGT ranges procharged carb 555
  98. Hydraulic Ram...Who makes this?
  99. Bad powersteering pump?
  100. Liquid filled water pressure gauge problem
  101. 496 HO in-line fuel filter
  102. Using A MSD Box With Stock Merc Distributor
  103. Engine cover help
  104. Engine trouble shooting help needed.
  105. Any feedback on Venture aluminum trailers? specifically the tandem 5k axle 8725
  106. crank choices
  107. What do you clean your boat with?
  108. Installing water pressure gauge
  109. Oil cooler suggestions for 468 bbc
  110. Value of a mark iv standard 454
  111. Billet serpentine pulley 502 MPI
  112. Mercury Zero Effort Throttle Wiring
  113. Power Steering issues
  114. Choosing an oil pump
  115. Screws for exhaust tips?
  116. Looking for an engine builder in South Florida...Who do you know?
  117. OX66 Outboard gages to Gaffrig
  118. 454 Mag MPI not revving.
  119. Heat issues help.
  120. Old merc 90 outboard question
  121. Replacement iron heads for Edelbrock RPM performer
  122. Trim Tab Cable Help
  123. Mercruiser 6.2 Upgrades
  124. 704ci Motor Help
  125. 137-9400 mayfair steering
  126. Carb help
  127. Heavy duty shift cable??
  128. Motor Shut Down Filter/Pump/Other
  129. intermittent nav lights and fuel gauge problem?
  130. Baja 260 with 454.... Has mufflers and would like to remove them.....
  131. Gen IV 502 No Oil Pressure..... Help
  132. Timing question..502..
  133. 525 SC fuel problems
  134. hesitation, intermittent backfire etc
  135. When will thes 525s require work?
  136. Running hot according to the gauge.....454
  137. Prop slip calculator
  138. wiring help
  139. Need VDO Temp Sender
  140. New engine in Formula, more problems then a math book!
  141. 502 mpi v-belts part numbers..
  142. TRS transmission problems
  143. Impeller problems
  144. 496 mag help
  145. Size of harmonic balancer pulley bbc?
  146. How fast is an 88 scarab 1 with an efi 502????
  147. Mercruiser 5.7 efi fuel pressure kit from Autozone
  148. 502 mag MPI starts then stalls after replacing cap, rotor, wires and exhaust!
  149. Just got a noise ticket tonight - need options
  150. Broken dip stick tube on my 260 Merc
  151. 454 oil burn... questions on what to check first
  152. Throttle / Shift Controller - Sea Star or Mercruiser
  153. Thru hull tip internal flapper broke
  154. 496 8.1 Timing cover and gear question
  155. LED Gauge Upgrade
  156. 29' baja is shift cable longer with an imco extension box on the drive
  157. ignition troubleshooting ??? help please
  158. External voltage regulator wiring question
  159. 525sc upgrades for more hp
  160. HP 500 intake grommet??
  161. water in oil on fresh rebuilt 468 with m1 procharger intercooled.
  162. power steering pump question..
  163. 502 Catastrophic Failure!!! Why does this happen?
  164. trs to speedmaster
  165. Screw in fuel sending unit
  166. 496HO manifold over heating
  167. K-Planes Bolt Length
  168. Leakdown Test vs Compression Test? Help with a used boat.
  169. Circulating Pumps on 600sc (Convert to X-Overs)
  170. A/C questions
  171. 525 EFI Oil Pressure to High at Idle
  172. Rough idle?
  173. Fuel pump and delivery
  174. Hairline crackin one blade of stainless four blade prop
  175. power steering only works at speed
  176. 1 merc. 700 keeps vaporlocking
  177. New Mallory Ignition, no spark
  178. best replacement trim tab cables for merc k=planes?
  179. 32 fever with small blocks
  180. Feather throttle to keep running until reaching operating temp
  181. Air Fuel ratio
  182. How much HP? on my 454
  183. Comzilla intercoms
  184. Part # for 500 EFI impeller
  185. If you had a choice which one
  186. 1998 Mercury 250 EFI Factory Shop Manual
  187. B&M Blowers 174 type. timing issue?
  188. help! info on powerquest
  189. manifolds length
  190. Dumping cooling water, lightning headers.
  191. silent choice, issue or something else
  192. I.M.P Viper 310 help
  193. Formula 233
  194. I think I stuck a valve
  195. plug gap
  196. Question about GMPP 502ho crate engine.
  197. Shop Labor times to Pull a motor
  198. Hyd steering hose??
  199. 525 Oil Temp Sensor
  200. Carburetor Help
  201. Mefi 3 ??
  202. 502 dies at wot
  203. Help Please!!!! 88 Four Winns Liberator 211 is SLOW!!
  204. Oil Temp Issues
  205. Another 525 Header Issue
  206. 496HO: would IAC cause this? 1 engine lagging intermittently lagging 100-400 RPM
  207. 525sc idling at 180* rising to 210*
  208. New GM 502 Vibration above 1500 RPM
  209. Whats TO HOT FOR OIL TEMP
  210. Right thrust washer? Hub?
  211. Firepower control box
  212. Gen 4, 5 and 6 GM heads same plug reach?
  213. over cam'd motor or pump problem?
  214. Need help with Kohler 5ECD Generator...
  215. Russel Performance AN swivel fitting leaking
  216. Mercruiser BBC front engine mounts 79550
  217. A/c unit help
  218. 350 mag mpi won't turn off???
  219. is this a sign that the hull was rotten?
  220. 2 Alternators to choose from
  221. blower size help
  222. Replacing stock thermostat housing with Stainless,,,,,
  223. Mercruiser silent choice
  224. How often to clean the air intake 7.4 mpi
  225. Mercruiser Rev Limit Ignition by Firepower
  226. 496 whipple boost
  227. Cigarette 24 info
  228. Led Cockpit lights
  229. Exhaust Problems
  230. Cobra outdrive not pumping water
  231. Trim not moving evenly
  232. 502 water reversion
  233. Ultimate Warlock 24' Euro
  234. Alpha hit something no forward or reverse
  235. FAST Programmable EFI
  236. Oil foaming out of lower unit trim pump reservoir only while trimming lower unit.
  237. Loose/missing exh flapper
  238. Engine won't get boat on plane - ignition issue?
  239. blown 900 ate a distributor gear over the weekend, what now......
  240. Cost to rig a new hull?
  241. Outdrive Control Box
  242. 502 ss trying to get a hold of u bro ??
  243. Morse Controls
  244. Mercruiser Head Gasket Sealing
  245. Why no oil cooler 350 mag MPI
  246. Go Fast needed for a wedding
  247. Noise at Higher RPM's..... Details inside
  248. Rooster tail fittings on Normal drives - What and where?
  249. Removing compass
  250. Another water in oil milkshake thread
  251. Water in motor..need help fast!!
  252. Head Gaskets...head bolts..
  253. Baja 252 motor help
  254. When started, EFI motor will not idle below 3000 rpm
  255. Smart craft trim limit switch
  256. steering question
  257. Serp belt tension
  258. Lubricant for silicone exhaust hose?
  259. Painted boats hull cleaner?
  260. Scratched CMI polished Sport Tubes
  261. corsa solenoids ratling when diverted to prop
  262. wiring questions
  263. timing chain question
  264. transom assembley help
  265. Pondering the thought of doing a LS motor.......
  266. Any wlders in the house?
  267. Junk VST Electric Fuel Pump
  268. Hardin Gen 7 Sea Pump Install
  269. Motion actuator for power bolster seat, I need one from a Fountain or other boat!
  270. New engine ready to fire but WONT! Expierenced techs Please Help!!!
  271. Steering leak at the helm
  272. Boost referencing carbs
  273. recommended manifolds for 540 tall decks 600hp innovation marine
  274. twin engine fuel burn from side to side.
  275. Drain plug adapter
  276. 496 ho
  277. 03 496 ho double beep
  278. Horrible Idle on a holley 800..
  279. Smallbock oil adapter
  280. WTF,, does anyone make a tall life or ski vest for guys 6'-6'+
  281. 900 low oil pressure and cold filter after oil change???
  282. Recommended GPS with depth capabilities ?
  283. more HP for 502 mpi
  284. Lake Texoma Eating
  285. Running rough at low RPM after warmed up
  286. HP500/ BBC short water pump part#
  287. 502 MPI Surging over 4200 RPM
  288. New Oil Coolers? Yes or No?
  289. Gaffrig oil pressure sender
  290. Merc 7.4 Gen V clicking noise
  291. FAST Air Fuel Meter??
  292. RPM Drop in 1 Engine
  293. 12V DC Air Conditioner - Anyone have any experience with them?
  294. 496 with Whipple
  295. Gen IV Heads On Gen V Block Coolant Port ?
  296. Ethanol resistant fuel line?
  297. motor swap, now gauges dont work
  298. flame arrestor
  299. Bore notching 4.310 bore
  300. kiekhaefer trim tab manual or information needed...
  301. Throttle response.
  302. Anyone noticed slower speeds with the higher air temperatures?
  303. Heat Alarm wire..
  304. 1999 Donzi 26ZX performance results with new 502
  305. 600sci Impeller DIY?
  306. Replacing trim and drive indicator cables on Bluewater Performance panel HELP!
  307. Who designs custom dashes for older boats?
  308. Seeking a brochure for a 20 foot Cigarette
  309. Cast Iron manifold -> Stainless exhaust pipe
  310. Valve cover removal with exhaust on?
  311. Mando alternator wiring....
  312. Merc Racing 525EFI. SAE or Metric fasteners?
  313. Dana Exhust
  314. Replacing 502 with 496s
  315. Replacing 555 on 496 with MEFI Controller
  316. Exh manifold leak test w/acetone
  317. single 4150 fuel feed recomendations
  318. running hard with or without Silent Choice open
  319. This pizzes me off! Who is CP performance trying to kid
  320. Size of hose on speed master 3
  321. Swapping to a sea pump on sbc...
  322. anyone have 500efi valve cover baffle pics?
  323. fuel/water separating filters
  324. Pump size nozzle on a stock HP500 holley 850..
  325. Sierrs f/w sapartor
  326. Temp problems with 27' Advantage Victory
  327. Mefi 1 ecm bad, ideas??
  328. Need some help guys! Just bought a new boat.
  329. Dual Carb Adapter Gasket On Blower ?
  330. Skag repair on Sportmater lowers
  331. 1997 Gen VI MPI
  332. L-29 heads question?
  333. 7.4 MPI Vapor Lock and "jip joint gas"
  334. Oil cooler location and funny story
  335. exhaust manifold
  336. Oil Cooler Line Diameter
  337. 454 massive carbon build up on spark plugs back of the boat is covered in suit
  338. best prop for 26 Daytona
  339. 7.4 330 oil leak under power?
  340. Baffled by apparent reversion issues with Lightning headers and mild cam
  341. Changing oil with engs out
  342. Motec display with smartcraft?
  343. 525sc died at 70 mph no spark
  344. Bravo one trimming noise!
  345. Holley power valve sizing.
  346. ( A/F ) air fuel ratio for NA 350 vortex
  347. 330hp to 350hp vortec 454
  348. Engine Weight ?
  349. Fuel leaking out of vent ??
  350. Engine Oil Overfull (Due to extended high RPM runs)
  351. Intake Manifold Oil Leak?
  352. 4 Blade vs 6 Blade.
  353. Geico, Seaworthy Ins, Any Horror Stories?
  354. auto technician needed
  355. trouble with 525 sc
  356. looking for two pair of 4.5 flapprs for myexaust p
  357. 2004 47 fountain oil pressure sending unit
  358. Need opinions/suggestions 12volt battery system
  359. 525EFI water pump
  360. Gil Oil coolers
  361. Turbo question! Advice needed
  362. Dyno Day! Question for engine builders - A/F correction factor for dry dyno headers?
  363. 496 HO 2004 - Shutting down when throttling down
  364. anyone running a 5 blade with 525 efi?
  365. Corsa switchable exhaust swap.... Baja 272
  366. What are they worth?
  367. Ocean Marine AC unit reading HPF???
  368. Recommended oil for my 7.4
  369. Need advice about sea strainer on a superboat
  370. U joint shaft bravo2X
  371. 01 38 fountain lightning gen iv bbc what couplers and housings
  372. Anyone bought a new oil cooler that had something rattle in it?
  373. Power Steering Pump Pressure for Ram
  374. Where can I find a eddie marine part that is no longer made....
  375. Fuel Gauge...
  376. 525 Mercury Racing Engine pulling back once it hits 4200 rpm
  377. lying to your insurance company? ??
  378. TB IV and V ign info
  379. Where to place AFR sendor Or Stanless Marine Exhaust
  380. Backfire through exhaust on initial startup
  381. Hardin marine ?
  382. Spun Prop What Else to Look For
  383. EMI risers, cracked one
  384. 99 formula twin 7.4 mpi bIII vibration/hesitation help
  385. motion 30 vs spectre 30 ??
  386. how to I.D a 454 Magnum
  387. How reliable / durable is the Merc 6.2?
  388. Lost oil pressure
  389. Engine rotation
  390. Comp cams 212 Timing cover
  391. Drying out cabin carpet ??
  392. 502 mpi thoughts on pitching injection and going with the carburetor
  393. WPM Steering
  394. 144 blower on stock 350
  395. Oil Temp Question
  396. Here we go! blew up a blower motor
  397. Owners manual, 1991 Sonic 31'???
  398. Overheating problem-more challenging than usual
  399. Corsa quick and quiet exhaust mufflers
  400. gages
  401. Why jetting so staggered with a single plane?
  402. Anyone want a 2012 38' Powerquest? Looks like an auction for unfinished boat
  403. Carbureted 502 MAG Timing And Fuel Help Please!!
  404. Hardwall water hose
  405. Fuel pressure on carb 454
  406. MLS or Performance head gasket
  407. Dyed vinyl question
  408. 6.2 engine torque?
  409. Compression Test
  410. Finding Taco vinyl rubrail insert
  411. Stainless Braided Trim lines and Kplane line extending
  412. Problem !! Electric gremlin I think.. Help..
  413. Correct Flywheel??
  414. 496 Mag HO Rev Limiter ?
  415. Help with Warlock Performace Machine steering ram
  416. 7.4l 330 hp needs a new carb what do you guys suggest
  417. Replace silent choice on my scarab? or keep replacing seals?
  418. ethanol fuel messing up Gas Tank sending unit???
  419. Fuse or not to fuse "That is the question"
  420. Looking for Some Insight on Merc 500 EFI
  421. Where can I get exhaust block off plate
  422. 496 vs 540
  423. O2 sensor without drilling and welding Lightning headers
  424. hydrolic steering question please help
  425. 502 not firing on all cylinders/raw fuel in exhaust
  426. 502 MPI Cool Fuel vapor lock - other options than new electric LP pumps
  427. welding Lightning headers
  428. carbed 454 mag will not idle
  429. Aeromotive Fuel Pump issues
  430. BBC physical size
  431. best exhaust for the dollar
  432. Power steering ram leaking.. need help on finding parts
  433. baja to a sea ray
  434. 496 whipple loading up on idle
  435. Newly rebuilt 525efi will not fire... help!
  436. best place for hp transom assembly
  437. Engine shudders and sometimes stalls when Bravo 1 engages fwd/rev
  438. CROSSOVER help..yes another crossover question..
  439. Stellings Greens VS CMI Etops
  440. what heads 308 darts 290 or 305 afr heads
  441. gen v info?
  442. What makes a "fast hull"
  443. 525 sc ?
  444. Mercruiser 502 EFI stalling question
  445. performance gain???
  446. 500 EFI Issues. Wont Stay running......PLEASE HELP!!
  447. Battery Selector Switch??
  448. Does a K&N spark arrestor help or hurt? 500hp
  449. New water pump done. Problems?
  450. Gen iv gen v whats the difference
  451. Taco Part
  452. Where can I find plastic mipples that go into valve covers for venting??
  453. New or old style head gasket EFI 500 .
  454. Idle poblems 502 mag MPI. Please help!
  455. Please help identify what kind of boat this is!
  456. EMI Thunder Exhaust Manifolds HP limitations?
  457. 496 Mag water pumps not priming with new impellers. Time for new pumps?
  458. 502 mag part # please
  459. Battery Question.?
  460. 383 build opinions
  461. need help with 525 sc engine not going over 5000 rpm
  462. stelling header tails
  463. Changing Gil exhaust from wet to dry pipes
  464. iac duty cycle numbers
  465. Mechanical fuel pump, need some help
  466. Carb Spacers, Whats the low down on them?
  467. Mercruiser Fault Codes??
  468. Need help help
  469. 1978 python boat
  470. Lake Tahoe mechanic needed
  471. Where not to buy boat parts
  472. How to identify Merlin heads....
  473. Mcleod bolster switches.....
  474. 502 MAG not advancing
  475. Wiring up a 10 pin harness in 88 formula help
  476. Need input if anyone has experience with Competition Products crate motors.
  477. Stuck Steering Wheel, HELP
  478. Anyone had oil starvation issues running screens in the lifter valley?
  479. Dire need of an accessory drive pulley for weiand 177
  480. Need help troubleshooting vacu-flush ??
  481. Closed cooling help... wont come up to temp
  482. Mefi 3 idle problems/throttle ??
  483. gen v head swap
  484. 502 Mag MPI fuel injector cleaning interval?
  485. Vapor lock fixed for good boys and girls
  486. Power steering cooler needed?
  487. MSD Dist cap center post Failing????
  488. Mounting exhaust tips?.???
  489. Help, Motor won't start. Merc 454 Mag EFI
  490. nother power steering question; fitting sizes...
  491. Looking for surveyor in Chacago.
  492. HP500 water plumbing
  493. Water / oil temperature 35 Cafe racer
  494. outdrive anti-foul spray paint.
  495. Tuning For E10
  496. Engine heating up
  497. New heads
  498. replacing eddie marine manifolds with gills.
  499. 88 top gun fresh water pump location ?
  500. need help to set rpm wire