View Full Version : General Q & A




  1. swapping k throttle
  2. NXT Transmission
  3. Piston to valve clearance - 454 Mag short block
  4. Fitch Fuel Catalysts
  5. Best place to order Mercury parts from
  6. Need an Anchor
  7. Corvette C-7 LT1 Engine for marine use?
  8. Silent Choice on a 525 EFI 29' Fever
  9. 731 or 741
  10. Oil pump thread
  11. De-tuning my 2001 ilmor supercat 517
  12. Missing skeg(s) and cavitation plate
  13. 502 mag torque #
  14. Is there any product that softens vinyl (interior)? What is the best cleaner?
  15. Drive couplers
  16. boat length?
  17. Blown head gasket and worn wrist pin... rebuild advise?
  18. Wellcraft scarab cv 7.4 v8 engine.
  19. Pressure checking manifold,headers
  20. Flat vs Roller, Blown 454
  21. Can you make a 502 mpi flow more air?
  22. 525 Header/Tailpipe issue
  23. 1" or 2" carb spacer
  24. Dyno proven 675-700 HP 540CI recipes?
  25. Talk to me about closed loop cooling...any reason not to?
  26. Need Help on Heads on Gen 5 454's
  27. Need Help on Heads on Gen 5 454's
  28. Upgrades to stock 350 sbc
  29. Hawk 502 specs
  30. Bearing clearances, oil weight, and more...
  31. Intake Manifold
  32. Fuel Pump and Filter mounting
  33. Hydraulic vs Electric trim tabs
  34. EFI intake
  35. GoPro Cam Choice. . . .
  36. Carb to EFI
  37. Time to rebuild the 502...
  38. Oil restrictor size hp500
  39. 1976 stinger jet boat
  40. Want more hp out if my 502?
  41. How do i get the air out of my K-280's trim tabs?
  42. Has anyone used the new merc digital trim indicators?
  43. Fountain bilge light - bulb ID
  44. How is compression ratio figured?
  45. Who's going to the PRI show next month
  46. IMCO fuel valve instructions please
  47. procharged 502 fuel system
  48. 540CI builds, MAX RPM?
  49. Bravo or Bravo x3
  50. Midrange and low RPM grunt. Discuss please.
  51. 2011 Sea Ray 240 captain seat cylinder adjustment
  52. HELP i have a gremlin onboard
  53. SB Exhaust manifolds
  54. 8' beam into 7'9" garage door
  55. Antifreeze for Winterize Mercury 700's?
  56. Cam Questions - Little Help/Direction needed
  57. single plane intake vs. dual plane
  58. Blue engine maint?
  59. Top end refresh?
  60. Enine Builders?
  61. 388 hustler that was in the classifieds
  62. Looking for some real out of the box thinking....
  63. another milkshake
  64. What size is this
  65. HP 500 valve covers....
  66. Best way to clean old fuel tanks
  67. ss rod ends?
  68. Weiand 177 or 256, which kits?
  69. Step By Step : Building An 871 Blower
  70. Baja 240 sport (24 outlaw) VS 250 (270)es
  71. Where to buy bolster tops?
  72. Fuel pump
  73. How to tell if its an HP gimble ring or not?
  74. Projected or non with blowers?
  75. Smashed Plugs on fresh re-build, any advice?
  76. Does prop slip increase or decrease with speed? Top speed less than expected.
  77. Smartcraft gauge rigging question
  78. What is this plate called and where can I get one?? SsmII
  79. Antifreeze/Magnesium question. (non boating related)
  80. 1999 vortec 454 yes or no
  81. Anyone change an Oil Thermostat in a HP500 Filter housing?
  82. Circulating Pump Size
  83. Using Marine battery in Truck?
  84. motor oils prefered on performance boats
  85. how to remove gas overflow stain side of boat?
  86. Holley fuel pump safety switch 12-810. 2 bad in one year.
  87. Engine Rebuilding
  88. header friendly sub for r44xls
  89. HELP PLEASE....Thoughts on repowering
  90. Roots Blower Sizing
  91. Engine Pre lube systems
  92. boat vapor locked after taking off fuel filter/water seperator
  93. company to handle blower DIS/REassembly and powdercoating?
  94. Gen 6 Heads on a Mk 4 Block
  95. Ebay water jacketed headers?
  96. Innovative Wideband A/F system - cable too short
  97. Revolution Marine Oil Reservoir
  98. Oil pressure safety
  99. Winter upgrades, LEDs, underwater lights, etc
  100. My quest for 60 MPH
  101. Stock power to Ilmor swap
  102. Outboard motor question
  103. Merc Racing 575 SCI running very rough/rich
  104. Kaama Question?
  105. Winterizing Question- Looking for Ideas
  106. Fuel stabablizer
  107. Fuel Filter
  108. 1988 Merc 420's
  109. Gas Ssteam Out Of Whipple Chargers
  110. Gauges Cycle/Sweep
  111. piston coatings
  112. merc twins 496HO will not exceed 2800
  113. Merlin heads
  114. Valve Springs & Rocker Arms - 525EFI's ???
  115. Exhaust Replacement ?
  116. Can we change our S/N
  117. Max safe RPM?
  118. changing throttle shifter configeration on Gaffrig
  119. What's a 502 block worth
  120. Gen 3 Cool Fuel Winterization?
  121. 496 ecm
  122. Found external leak on manifold - crack
  123. milkshake under stbd valve cover, hi water temp on the port side of the block.
  124. Looking for a Twin Disk mechanic
  125. sonic prowler 496HO PCM PROBELM??
  126. Machine shop in SouthEast Michigan
  127. Can I start the engines on the hose with the drives off?
  128. Hawk 525sc's
  129. Secondary idle screw adjustment on quick fuel 1050?
  130. Gen6 cylinder bore question max bore?
  131. 525 rebuilds with 250 hours
  132. Another bad motor
  133. Stainless marine gen 3 gaskets
  134. Power steering fluid tempature.
  135. Why do larger roots blowers use 2 carbs?
  136. Oil temp problem in my 572, need input/advice....
  137. Finally got a new tow rig! (any other 8.1 owners out there?)
  138. Need Boat Mechanic / Engine Builder in Palm Beach Area
  139. Smartcraft and gauges ?
  140. 598 build questions
  141. Profile picture
  142. Timing a custom supercharged engine
  143. gas tank
  144. Smoked 502 tonite
  145. Bbc with v6 module??
  146. Phenomenal experinece with MarineEngine.com
  147. Need engine advice N A 598 cubic inch rebuild
  148. 700 sci - over heat at high rpm only
  149. Twin Turbo Build
  150. Water Press. location
  151. Exhaust manifold differences 502 vs 525 efi
  152. Another Engine Dynoed today.
  153. WTF Did I Just Do. Considering a Formula 400 SS
  154. 33 Baja outlaw vs 32 fountain fever
  155. SBC Built, now looking for jet recommendations
  156. 502efi
  157. 525EFI Warm start problem - ??
  158. 29 fever triple digits
  159. Who makes the Black Thunder?
  160. Little help if possible
  161. Remote oil filter mounting heigth?
  162. Vibration above 4200
  163. Bravo1 drive goes down, but won't go up.
  164. What muffler / silence are these?
  165. big cubic inch chevy?s
  166. Sea Water Pump Pulley?
  167. 502 EFI, spark coming out of the coil, no spark at the spark plugs
  168. Thunderbolt IV sensors
  169. Twin engine boat porposing problem
  170. New Merc 540 replacement engine
  171. Inexpensive 454 mag performance up grades
  172. 500 efi upgrades
  173. Bennett trim tabs
  174. What problems to look for on Merc 700's
  175. Need some help with engine replacement
  176. Cam guru's please read
  177. Question On Coated Pistons
  178. big block chevy correct spark plugs
  179. Bbc valve cover question-hardin extreme
  180. Bravo upper internal plug?
  181. 502 HO Mag questions
  182. Mercury Outboard Mechanic
  183. Recurring gauge problem - 525EFI
  184. Stroker fuel injection
  185. Wet Exhaust to Dry Exhaust
  186. Windshield for a 2003 HTM 24ss???
  187. Mefi 1 to mefi 3 question
  188. The Blower Shop Intercoolers WTF!!!
  189. single SSM 6 drive height? Or who to call?
  190. Weird 525EFI Question
  191. Gimbal housing help needed
  192. 502 Merc parts ID
  193. Trim Tab Advice??
  194. merc mefi 3 question
  195. Transom that was mounted with an X drive mounting a Bravo 1 question
  196. 496 HO 152 IAC Output Code
  197. who do i contact to fix my username to post a classified ad
  198. 1997 502 EFI cranks but won't start, will try and run after shot of starter fluid
  199. Fuel System Fittings
  200. 377 flywheel
  201. 496 HO maintenance while replacing transom assembly
  202. What are they worth?
  203. Vibration on down trim
  204. Where to purchase oil coolers and hardware
  205. 525efi rev limiter
  206. prop changes from 1.5 to 1.36
  207. 1999 Merc 454 mag ign issues
  208. motors bogging ? fuel pressure maybe?
  209. Engine Quest/RHS 320 Iron heads
  210. Starving for fuel...
  211. Can These Be Repaired ????
  212. QUICKSILVER SBC long block assembly worth building?
  213. I need to find a good shop in the Gulf Shores, Al or Pensacola, Fl area
  214. Aluminum Head Exchange to Steel Head
  215. Prop shaft carrier bearing stuck
  216. Aluminum Head Repair
  217. how hard is it to mefi tune my own after i install procharger
  218. 5 blade on 2004 288 sunsation
  219. Value Of a 91 Mark IV 502 Mag
  220. dry exhaust
  221. Volvo Penta 7.4 Gi vs GSi rev limiter
  222. tall deck to short deck exhaust problems
  223. Opening a can of worms
  224. merc xr gear pinion
  225. Trying to identify a pair of Mercury OB's
  226. Front Seal Unazzed
  227. 1998 Mercury 250 EFI
  228. 496 with whipple worth
  229. 350 mpi possable reversion
  230. Carbed 502/502HP fueling issues on 1996 Baja 272 Islander
  231. 502 magnum mpi IAC crossover
  232. Wrong oil?
  233. 454 Baja overheating
  234. Anyone know how too get ahold of mr gadgets?????
  235. Felpro 17042 vs 17046
  236. Roots Supercharger experts Snout problems
  237. 500efi - starter burned up + more - Help!
  238. Fuel supply issues
  239. Checkmate 251 Convincor vs Profile 26
  240. 1989 Power Play Conquest Decals
  241. Latham Steering Leak
  242. 502 EFI shutting down after 5 seconds of run time
  243. Part numbers question
  244. Volvo Duo prop
  245. Hp 500 carb setup help
  246. One exhaust is only shooting out water
  247. HP500 boost question
  248. Help 502 EFI stalls out
  249. 1996 HP 500 Carb lifter part numbers
  250. Removing CATs on new 8.2L motor
  251. Low oil pressure and Oil cooler questions
  252. Ram air
  253. Mayfair Hydraulic Steering Ram Rebuild help.
  254. 2001 555 PCM to mefi 3
  255. motor not hitting WOT?
  256. Need help with engine issue
  257. Knock came and knock left
  258. Paging skater Scott 36
  259. Mercruiser 496 ho overspeed code
  260. Raymarine DVD
  261. A little roots blower info.
  262. Can you please direct me to some Velvet Drive Identification information.
  263. Are my 454's magnum's??
  264. which fuel transfer pump to use ?
  265. 500 efi fuel fouling plugs
  266. 525EFI Header Failures - CMI vs Hardin - All failing
  267. Mercruiser Computer Programming
  268. 525 EFI sea pump stops pumping
  269. Fuel Pressure
  270. Should I scrap my anti-spam valves?
  271. 088 heads on gen 5 454 ?
  272. Trim and Tilt Pumps, why is one so much faster??
  273. what is killing my fuel pumps?
  274. SBC to BBC Conversion Questions
  275. Bilge pump in Fountain left running dry- are they toast?
  276. solenoid or trim pump bad?
  277. Gaffrig controls neutral safety switch
  278. 600SCI Gurus Needed -- No BOOST
  279. 088 Heads Max lift?
  280. adding 174 blower
  281. 502 Mag Removal
  282. 525 Header issue; I'm stumped..
  283. Top speed and cruise speed and gearing advice new to forum
  284. Pump for toilette and post-swim hotwash
  285. What Size Carb.
  286. Anybody use these boat dollies?
  287. Looking for advice
  288. SSM V alignment tool
  289. Starboard motor won't start - electrical, fuel?
  290. Mirage won't plane off
  291. Can anyone help identify this boat, and help provide feedback on possible purchase.
  292. 500 EFI Fuel Line longevity
  293. Cigarette 20 Update
  294. Fuel feed issues
  295. Time to replace fuel lines?
  296. Misfiring carb 502
  297. How much does Deck weigh on a Formula 302 SR1. I want to lift it to access stringers
  298. 525 EFI Alarm
  299. Noise when shifting
  300. 525 EFI H2O pressure?
  301. oil temp
  302. Merc 5.7 2bbl 1998 unique concerns.
  303. Replacing dipstick tube in 454
  304. Oil pressure problems!
  305. 454 to 502 repower suggestions
  306. PBM/Erson rods and cranks, comparable??
  307. 500efi overheating hot port header, help
  308. jet size
  309. Motor question for the Guru's...
  310. HP 500 carb fuel mech pumps
  311. Intake to head sealing issue question
  312. Collapsed lifter, bent pushrod
  313. anyone make hinge pin covers?
  314. Value 26 Prowler
  315. Ride quality older 38's which ones to look at
  316. need HEI DUI distributor info
  317. Hardin Marine - Hurricane Lite 525 Headers -- who's got 'em??
  318. solid or rubber prop hub???
  319. 525sc conversion
  320. 7.4 freshwater cooling
  321. Lower than I like Oil Pressure
  322. marine a/c units
  323. aftermarket mechanical fuel pump
  324. need help with code 42 on V6
  325. O2 guage
  326. Bravo 1 Vibration in forward drive not reverse??
  327. Dual trim pumps, one switch?
  328. Remote trim switches
  329. Reading Starts Me Thinking - More Power
  330. Water in fuel lean condition.
  331. Low oil pressure in brand new 502 efi
  332. Serpentine crossover kit
  333. power gone from my 8.2 mercuiser
  334. Moisture in valve covers with oil thermostat?
  335. Power steering leak
  336. 500HP carb- synthetic oil?
  337. oil spray from the front of a new 502 motor custom built
  338. Intake ?
  339. Swain Tech PC-9 Piston Skirt Coating
  340. 81 Formula, both alternators do not work?
  341. Water pump shaft seal
  342. Oil filled bilge - need advise please !
  343. how do you align an engine?
  344. efi vr carb
  345. Easiest way - converting 502 to EFI
  346. 502 mpi no inj. pulse on 1/2 the inj ?
  347. Fuel Injector Replace/Repair 805225A1
  348. Switch standard Bravo 1 to XR?
  349. has anyone ever powder coated blower pulleys
  350. PCM 555 codes
  351. 496 Mag HO front motor mount options?
  352. Camshaft sensor for 2001 496
  353. Murcury Racing HP500
  354. Old School HP500 water pump blown gasket (NOT SEA PUMP)
  355. Fuel tank level sender for formula needed
  356. Quietest thru transom exhaust setup
  357. Oil pressure gauge?
  358. Sloppy steering on bravo want to add hydraulic steering
  359. Which brand do you like?
  360. Merc 5.7 - 260hp
  361. Rapid beeping?
  362. Nordskog sending units?
  363. Autometer Gauge Connections
  364. prop slip?
  365. 781 heads best mods
  366. 38 Fountain fever wind deflecter /where to get one?
  367. How to tell the diffrence between a bravo 1 and 2
  368. any holley TBI experts here?
  369. Cam question
  370. Stupid cam shaft idea? Serious question
  371. Jetting starting point?
  372. drive position indicator - cable type
  373. gen 4 gen 5 question
  374. 1986 Wellcraft Nova III opinions please
  375. Oil sending unit and -----?
  376. 781 bbc heads from auto?
  377. Voltage regulator?
  378. 502 Mag Mpi Issue
  379. Measuring Compression Ratio
  380. Any good internet dynos??
  381. Raylar 496 HO upgrades
  382. 502 500hp efi sumble /stall
  383. Good oil pressure sending unit
  384. Stock 330 fuel pump question
  385. Long or short risers needed for this cam?
  386. Mark IV 502 Mag Hole In Piston And No Oil Pressure Help!
  387. 1000 Islands Poker Run Who is going?
  388. I need 1 set of Stainless Marine Exhaust for a SBC. Who's got the best price?
  389. Sea water/fuel pump questions. Leaking oil.
  390. PowerQuset Interior Lights - HELP NEEDED
  391. Could backfiring cause this?
  392. 454 Cam selection down sizing?
  393. if i had water in bravo one fluid...
  394. csm with vinylester
  395. Mercury efi to holley efi. How to get the correct throttle throw.
  396. electric circulating pump??
  397. Iac for 97 454 mag MPI's part number anyone know.
  398. Q-jet jetting help please
  399. Exhaust Riser gasket?
  400. guys I need help please 496 ho surges almost dies...
  401. Helm joint replacement?
  402. Any A/C techs on Long Island?
  403. EMI Thunder Exhaust On Stock 6.2s
  404. Serpentine to v-belt
  405. Strange MPI problem....
  406. 525efi milk shake
  407. 350 mag miss HELP please
  408. engine fault code?
  409. What thermostat housing for closed cooling system??
  410. blowers
  411. Hard steering at speed..
  412. 502 mpi mods......
  413. Fuel Delivery Issues
  414. Need part # for seal on water pump.
  415. Another newbie prop question
  416. 1997 sv24 challenger boat
  417. MSD Distributor
  418. Help! Merc s/c seals & bushings
  419. Posting pictures with an I Pad
  420. Gen5 to gen 6 have had nothing but problems
  421. Need Torque specs for top two bolts on gimble
  422. 280 Tabs to 380 tabs
  423. Marine Machine Hardware
  424. Small water leak on a XR Drive
  425. Black hose water drain system 496 HO
  426. Solid Roller Cam Worth it??
  427. Weak Starting - Ground?
  428. HELP!! 1996 Baja 302 windshield broken!
  429. circulation pump failure???
  430. How much hp will this build produce
  431. Power steering not working replaced parts...?
  432. Motors marked "BRE 168" any ideas?
  433. square k planes
  434. Simple oil cooler upgrade
  435. Prob and drive height suggestions for Donzi 25zx w 625hp
  436. vacuum pump, blown big block
  437. Merc 502 efi code 23 iat censor
  438. 500 efi exhaust issues
  439. Aluminum Intake manifold + salt brackish water
  440. Mercruiser Automatic Transmission
  441. Where's oil thermostat on merc 525 please
  442. What's considered too much oil pressure?
  443. Melting exhaust boots but engine not running over 180!?!?
  444. milkshake clean up
  445. Spark Plug Gap
  446. Benefits of quad rotor
  447. Any Fast 22ft Stingrays maxims out there??
  448. Distributor housing oil boss
  449. Building a new trailer for a 87 Midnight express 37'. Need help!
  450. Cast crankshaft OK?
  451. Reversion possibility question on SBC with XM270HR cam
  452. Riser gaskets...which one?
  453. 502 MPI w/cool fuel return line fuel flow
  454. Best way to clean the outside of an engine covered in oil?
  455. Replacing MEFI1 with ?
  456. Mystery Piece of Stainless in my Exhaust Tip - please help identify
  457. 8.1 oil bypass valve
  458. Stainless vs brass sea pump
  459. Longevity MIG welder
  460. crane 741 cam and stock roller lifters
  461. 502 fuel injected spudders and dies randomly
  462. Mercrusier 350mag w/Bravo 1
  463. Silent Choice Exhaust not opening.
  464. 500 EFI Powersteering pump defect ???
  465. Pressure test headers question
  466. Trim Tab screws ...kinda came out ....?
  467. Cam recommendations for these heads?
  468. 525 vs 496HO
  469. 454 EFI making a sqealing sound
  470. Mini Starter
  471. Fuel level in cool fuel module 496 HO
  472. 38 Fountain Lightning Worth It or Not ?
  473. EGT ranges procharged carb 555
  474. Hydraulic Ram...Who makes this?
  475. Bad powersteering pump?
  476. Liquid filled water pressure gauge problem
  477. 496 HO in-line fuel filter
  478. Using A MSD Box With Stock Merc Distributor
  479. Engine cover help
  480. Engine trouble shooting help needed.
  481. Any feedback on Venture aluminum trailers? specifically the tandem 5k axle 8725
  482. crank choices
  483. What do you clean your boat with?
  484. Installing water pressure gauge
  485. Oil cooler suggestions for 468 bbc
  486. Value of a mark iv standard 454
  487. Billet serpentine pulley 502 MPI
  488. Mercury Zero Effort Throttle Wiring
  489. Power Steering issues
  490. Choosing an oil pump
  491. Screws for exhaust tips?
  492. Looking for an engine builder in South Florida...Who do you know?
  493. OX66 Outboard gages to Gaffrig
  494. 454 Mag MPI not revving.
  495. Heat issues help.
  496. Old merc 90 outboard question
  497. Replacement iron heads for Edelbrock RPM performer
  498. Trim Tab Cable Help
  499. Mercruiser 6.2 Upgrades
  500. 704ci Motor Help