View Full Version : General Q & A




  1. Drive shower option
  2. upgraded 500efi shift issues
  3. Impermeable Masking (Type) Tape?
  4. 502 engine build
  5. Extension box?
  6. Sea strainer install question
  7. Some Saturday Motor Fun
  8. 330hp 454 Flame Arrestor work on a 502HO?
  9. Afr heads with PAC 8002 spring upgrade.
  10. Gen V heads on a Gen IV block head gasket?
  11. Verado Outboard Parts
  12. Carb question. 850 vs 800
  13. LED Docking lights, any experience suggestion.
  14. Carb question
  15. Cam Question
  16. Need boat surveyor in NJ near Atlantic City/Little Egg
  17. Hawaiian jet boat
  18. Does Silent Choice contribute to reversion?
  19. 2.3L whipple blower Safe Limits
  20. Will carb need rejetted?
  21. Blower surge Make it stop
  22. 502 Mag Rebuild
  23. Heads Iron Vs alunimum
  24. Anyone seen gear lube leak out of water intake?
  25. Mercruiser 400 cyclone info needed
  26. Not fast enough, help!!
  27. Used merlin heads worth anything? 1 is cracked
  28. Imco sc -3
  29. Got my heads back fresh with a little clean up and a cam suprise
  30. Mercruiser 7.4 454 mpi overheating?
  31. Gen 6 firing order question
  32. Scorpion rockers
  33. Carb spacer or no ?
  34. Cam identification, please.
  35. Promaxx 320 flow numbers
  36. What Does OSU Do On Gibraltar Island @ PIB?
  37. Muscle car related vacuum advance vs piston speed
  38. Cobra Power
  39. installing imco +3 box, dropped
  40. Stamped Engine ID #'s
  41. Bad set of rings?
  42. Need a pic of p/s pump on 454/502 MPI v-belt engine w/ ProCharger
  43. idle adjustment 575 sci
  44. Injector cleaner
  45. 525 Repair Costs??
  46. Need some advice,procharger or 177blower
  47. Magic VooDoo 39 - any information appreciated!!!
  48. Can someone tell me year this engine is? Serial Number is
  49. engine question, good base or not
  50. Hub kit
  51. Roller rocker debate
  52. Bravo XR Trim Insert Adjuster Positioning
  53. Gen VI 489 +20 build
  54. Need Hydro Hoyst, Air Dock for 38' boat
  55. 604ci Nortech motors
  56. Deleting cooling hose merc BBC
  57. Need Crand HI-6M instructions
  58. Impeller and hose trouble with Hardin pump
  59. 496 crank kit, quality & fair priced kit for home builders. Help
  60. transom straps
  61. 1996 formula 27 sr1 graphics
  62. Hull issues
  63. Bandit motors
  64. Help identifying engines
  65. Manifold Longevity
  66. hp 500 carb question
  67. Oil Pressure
  68. anyone know this guy on here
  69. SSM Exhaust
  70. Hynautic Steering Question (Not smooth when wheel turned)
  71. Transom Plates
  72. Arneson Drive traits
  73. 1981 Scarab S Type 330 TRS. Outdrives can easily move either direction not running.
  74. Premature main engine bearing failure mystery
  75. Lobe separation
  76. AFR 300 magnum prices
  77. Needing help with h i n #s help help
  78. Teague 825 EFI Vs Merc 525 Supercherged Stage 1 Whipple
  79. Whipplecharged 540 maintenance
  80. blower height above crankshaft
  81. Professional Motor rebuild question...
  82. Converting to closed cooling
  83. Oil pressure sending unit mounting orientation
  84. Question on bravo gimble
  85. distributor gears.
  86. Converting EMI Thunder wet passage riser gasket joint to dry.
  87. Magic 28ft Deck Boat 525 Whipple Upgrade
  88. Pulling 330 TRS Engines tips and tricks been awhile 81 scarab S Type
  89. Hey Full Force Tim
  90. Daytona
  91. Supercharged 540 Camshaft
  92. Overheating 350 in 1977 scarab 300
  93. No wake zone low speed miss
  94. Manual oil temp control??
  95. Gen v 454 merc mag efi cracked block, replace block or entire engine??
  96. Help - Need parts for a 7.4L/454ci GM Delco Voyager EST Distributor
  97. When should heads be rebuilt/serviced with closed cooling ???
  98. Please help! 89 Johnson 90hp
  99. Who wants to play
  100. rocker studs bb gen 6
  101. Sonny Leonard Engines
  102. Battery boxes
  103. 525 intake manifold vs 502 Mag intake manifold
  104. Manifold question
  105. Cam question (Whipple 500efi)
  106. Solid roller lifters?
  107. DO cool fuel lines go bad? Got a kink in one of mine.
  108. Drive and Tab cable length for 81 Scarab s type.
  109. slop in throttles 81 Binnacle mount single lever twin throttle shifters
  110. Better option for Fuel Filter/Water Seperator?
  111. Stem Pocket Lines on 502 MPI Intake
  112. 6.2 mercruiser valve springs?
  113. Machine and weld exhaust
  114. Any 28' Powerplay or 29' Phantom experts??
  115. Silicone hose for exhaust?
  116. Compression ratio
  117. Hydraulic vs hydraulic roller.
  118. is there a gas grill website like oso ?
  119. SBC cooling question?
  120. 496 MAG ECM on a 496 MAG HO??
  121. Bravo 1 496 Mag Exhaust Riser Question
  122. Solid roller adjustments or check intervals?
  123. Hp3 GM racing 2005 525 motor
  124. Pro comp bbc intake min CSA vs 454r min CSA and minimum to maximum differences
  125. Valve cover differences
  126. best vinyl conditioner
  127. Bravo Drive oil cooler-Drew Marine Cool Swirl
  128. Thumping idle
  129. Swim platform for a Switzer 24SS
  130. 525sc Rebuild
  131. roll off work on...
  132. 525 Fei Crankshaft
  133. Ignition
  134. how much power can stainless marine take
  135. Where can I get a small piece of Corinthian riviera red carpet
  136. Rebuilt HP 500 carb motors
  137. Anyone know these shifters?
  138. Mercruiser 496 Fuel Pressure Regulator-2004 Cool Fuel
  139. Anybody had your fuel pressure guage pegged?
  140. Scorpion Rockers... good, bad?? ugly? long life??
  141. tranny cooler plate....how hard?
  142. Aluminum head valve seat material??
  143. Mercruiser cyclone 400 manual
  144. Dana marine exhuast
  145. Replacing cylinder heads on a 500efi?
  146. Tips for Pressure Testing Headers
  147. -12 bungs
  148. 28 daytona eliminator and procharger fitment
  149. Dart block oil temp
  150. Stainless marine exhaust Q
  151. Alpha Cutout Switch NOT Working
  152. NA pistons
  153. Low speed cavaition, what would it feel like ?
  154. Bravo III prop nut
  155. What's the difference between 35-16595Q and 35-16595 and WIX 51515R
  156. Why don't boats have multi-speed transmissions?
  157. Replacing valve body on steering arms at transom anyone done this job tips?
  158. Verado 350 rigging manual.
  159. Mayfair extension box
  160. Daytona Ignition data logging. Engine tuning.
  161. Hard start 540 whipplecharged
  162. Quick question
  163. Mercury 520 / 540 / 565 opinions
  164. milkshake on dipstick... what now?
  165. Too much Bow Lift.
  166. Do all Merc Racing oil filters have ADBV?
  167. Internal tie bar???
  168. Vinyl Wrap?
  169. Winterizing?
  170. Getting reversion and need some advise
  171. Corvette boat conversion...any info
  172. 3.0 L 250hp EFI Mercury outboard
  173. Are Sea Strainers Necessary In My Situation
  174. Freevalve Update - Camless Engine
  175. Sniper intake results?
  176. Oil level question
  177. Cam Specs
  178. teague pop up add
  179. idler pulley
  180. merc gear lube
  181. Hardin SS Exhaust Flappers......Alternative?
  182. Hydraulic Steering help.
  183. 500efi Saga Continues
  184. Timing question (setting initial/total)
  185. Roots blower top pulley not lined up with crank
  186. Merlin BB heads
  187. Engine builder wants $3000 more for Merlin block?
  188. Lets play the HP guessing game
  189. MSD Control Box wiring
  190. What are the chances of getting parts back from a engine builder
  191. Ilmor Oil Filter
  192. 502 harmonic balancer
  193. Any thoughts on how easy making power is?
  194. 572's with inter cooled 14-71's
  195. Compression numbers all over map on new , not yet broken in kongblock
  196. Marine Bluetooth 4.0 receiver
  197. 598 Engine Advise
  198. Valve springs
  199. Cylinder Head Volume: mercury 525 efi
  200. twin outboard V setup
  201. Is an air gap manifold needed?
  202. New 540 Combo
  203. Engine swap
  204. Anything to prevent where the outdrive "rubs" the gimbal ring
  205. Potential soft floor issue?
  206. Another Procharger needed ASAP!!!!
  207. 700 sci shift interrupt switch
  208. K plane sending units
  209. Valve seat materials
  210. 496 HO randomley turn off/on video
  211. Goodmorning from Italy!
  212. Clay Smith cams???
  213. What valves to use in EQ320 BBC heads?
  214. MEFI 4 to Nema
  215. 496HO problems looking for input.
  216. 454 oval port build results
  217. 2000 500EFI - Fuel Issues - need expert advice if possible
  218. Mrercury 700 dropping boost
  219. Converting from crossover to circulating pump.
  220. 4.3 Gl volvo ignition problem
  221. Afrs vs temp
  222. 38 ft mates cat. Aka cat scratch fever
  223. Dayton, Ohio
  224. Winterize with Super Chillers
  225. Jumping power hatch switch
  226. Motor Issue WOT 4000RPM
  227. 588 Idle Question
  228. New engine issue
  229. Alignment question with off shore mounts
  230. Waterjet system at transom of the ship hull
  231. SBC oil bypass question , reuse ok and orientation ?
  232. Rear Anchor
  233. Raylar 540 cu Short Block 496 upgrade ??
  234. holley throttle cable bracket
  235. What should a healthy vacuum reading be on 525 EFI?
  236. Exhaust manifold choice
  237. Couple videos for you guys
  238. I do believe I got bit by my purchase...
  239. Oil bypass question
  240. 496 Exhaust Risers on 6.2MPI's?
  241. Electric Hatch Actuator, Solenoid?
  242. What to do With My MK Cams
  243. DIY Winterization
  244. quick fuel carbs
  245. Drive setup on 30' Advantage
  246. Livorsi oil pressure gauge problems
  247. Some carb / intake info
  248. 509 MPI Starter
  249. Sonic Vendetta
  250. Help picking out a cam...
  251. Boat preparation for hurricane?
  252. Solid cam VS hydraulic VS short travel hydraulic?
  253. 4500 series intake that also has 4150 bolt pattern?
  254. facebook powerboat swap shop
  255. 2.3 on a 502
  256. Suggestions for a 35-38 cc under 300k?
  257. bell housing bushings
  258. Sealant / adhesive for sealing foam gimble gasket to transom
  259. Cleaning White Upholstery?
  260. Best Gel-Coat Repair
  261. Phone borescope...kinda cool!!
  262. Hardin Seaward 525 replacement exhaust
  263. Replacing Water distribution valve.
  264. Winterizing - battery maintenance
  265. 32 maelstrom
  266. Custom cam thread
  267. Fram XG5 502 MAG MPI & 20W50
  268. Would you rebuild those 500 efi with those readings?
  269. Merc Gen 3 cool fuel filter
  270. Need some help - Port motor not running
  271. Hydraulic steering
  272. How much reversion is too much??
  273. Gen1 Stainless MArine limitations??
  274. Four Winns Liberator 211
  275. Sc scoripion. Lots of questions
  276. Using freshwater flush port to winterize
  277. MEFI 4B CD or Download Needed
  278. 496 HO Question - What are these and how should they be adjusted?
  279. Give this 502/509 Combo Some Thought
  280. What Carbs would you buy
  281. Fighting a miss under load
  282. The curse continues... Brand new coupler slipping?
  283. Best Carb Spacer 4 hole or Open?
  284. Merc Smartcraft mpg... U.S. or Imperial?
  285. Water in hydraulic trim system
  286. Go badgers.
  287. US gasoline power beginner questions
  288. Heads/Cam or Supercharger?
  289. Water Traps in the Fuel Tank?
  290. best hole shot Trim tab position
  291. AFR numbers what's good and what's bad ..
  292. Bmax drives input
  293. gaffrig silencers
  294. 525 Edelbrock head
  295. 502 oil issue
  296. Setting the base timing on rebuilt 500 EFIs???
  297. 6.2 MPi
  298. Engine Air Temp
  299. Looking for engine builder in ct area
  300. Mercury 600SCI - Engine Fault - IAC Output
  301. Stainless marine exhaust converted to dry? Gains?
  302. Dyno... Marine trim VS Dyno (race) trim
  303. Upgrading fuel lines due to age and upgraded engine
  304. Repower/ long lock opinions
  305. Mercury 520 Performance upgrades
  306. 454 suddenly stopped, abruptly, would not even turn over. Took plugs out and
  307. Boat plugs out with pipe dope
  308. Boat plugs out with pipe dope
  309. Powerquest razor 22
  310. Aluminum heads
  311. Cam and valvetrain longevity....??? low duration high lift...
  312. Mercruiser 470 stalls after it has been warmed up. Wont idle under 2000 rpm
  313. Going from 5.0 to 5.7 or 6,2 SBC
  314. Opinions on rewiring engines
  315. Fluctuating engine temperature in my 2000 7.4 mpi Mercruiser Bravo 3
  316. 1075 sc cam in a 565 NA build
  317. How to clean oil coolers
  318. Need a boat brought to Florida from the NH area.....
  319. Mercruiser 7.4 LX MPI Intermittent Overheat
  320. Driving thru chine walk
  321. recommends on engine oil
  322. Lightning or GiL
  323. Alternator only charging one battery while running - Scarab 33 AVS???????
  324. Wow I heard of msd issues. But dam.
  325. How fast can I go
  326. 500EFI Help!
  327. Horsepower VS Torque
  328. What are you guys using for water PSI and vacuum line?
  329. Acceleration and efficiency
  330. Bravo 1 outdrive sagging help
  331. Spun Drive coupler (or whatever the proper name is)?
  332. Larson Senza Spectre
  333. 496 HO sounds much louder when cranking
  334. Anybody know where I can get a 500 EFI Rubber seal for Throttle Postion Sensor?
  335. Need Help finding Power Steering Pulley
  336. Typical places oil leaks occur in the port side rear of the engine
  337. smartcraft alarm question
  338. MEFIBURN tuning help
  339. Slight poping sound out exhaust. Comes n goes. See first post. Spellcheck
  340. Cause has developed slight piping ish sound.
  341. Faria gauges on early merc smartcraft
  342. SBC hydro locked, water in #1 cylinder
  343. 600SCi 5 beep alarm
  344. faria tach setting
  345. Loading up at idle
  346. water hose to helmut connection
  347. 500 efi dipstick loose
  348. 500efi help
  349. Water in oil.
  350. Turbulators for Gil exhaust
  351. AFR 325 flow sheets.... anyone ever flow these heads?
  352. Anyone run 108 LSA cams in boat before? 700 HP DYNO proven combos welcome...
  353. Worlds fastest boats
  354. late '01 496 HO poor idle/occasional stall in nuetral at idle only
  355. 350 Mag engine wake up
  356. 525 hp
  357. 32 fever steering cables
  358. Baja 232 Voltage Issue
  359. oil cooler with built in thermostat
  360. 2002 Baja 29 Outlaw Fuel Vent Question
  361. Header tube discolouring, what should I do?
  362. Wierd sea water hose problem
  363. How much timing advance should I run?
  364. Stainless Marine manifolds SBC power steering line in the way
  365. Loosing fuel pressure
  366. I'm cursed!
  367. Cams size
  368. shipping a outdrive
  369. 500 HP Intermiten Idle Issue
  370. show me your Fountain speaker locations
  371. 575 sci
  372. Older 575hp 540ci merc bulldog engine knocking
  373. 1995 502mpi won't start when hot
  374. New style and old style 525
  375. Bravo 3
  376. Detonated piston & blew head gasket. Now what?
  377. frictional losses of 4.25 stroke motor vs 4.0 stroke
  378. efi for supercharger.
  379. Reoccurung water pump failures...
  380. Mag efi
  381. Mercury 525 Rocker arm replacement
  382. Oil pressure flutter at higher rpms.
  383. Do anti-reversion dams work?
  384. Replacement steering Verado 400R
  385. Hydraulic Hatch Actuator
  386. Oil Pressure Bypass Valve Question
  387. slip %
  388. Pre-Filter Oil Filter Screen - YEA or NEY ?
  389. Power steering pump fitting Aeroquip?
  390. Catalyst elimination for "test purposes"
  391. whats the torq spec for bravo transom plate?
  392. Msd total timing procedure when locked out
  393. A little more Tinkering
  394. 502 MPI intermitant no start when hot.... not fuel prob
  395. Fuel Coming out exhaust
  396. Hammer knocking noise when in gear over 3000 rpm
  397. Will MSD digital 6 work with thunderbolt distributor?
  398. Holley Commander 950 mpfi won't fire!
  399. Thunderbolt V ignition, will big block module work on a small block?
  400. need part # for hose transom to sea water pump
  401. GM Fastburn heads, any experience with these?
  402. Weber carburetor
  403. new 540 water in oil
  404. Vessl View & DTS
  405. Push rod retainers.
  406. 5.7 timing with comp 270 cam
  407. CMI headers. Are they fixable?
  408. EFI Systems
  409. Impeller
  410. Chaparral Villian SLV Speed Capability
  411. Motor Issues
  412. procharged 454 Mag rebuild upgrades ????
  413. Heat exchanger help
  414. Rosella Oil
  415. converting my 350 cid merc. 320 efi's to carbs. what jet sizes?
  416. Plug for ?
  417. 500 efi 50lb fuel injector
  418. 502 mag loads up under load.
  419. Outdrive line help
  420. drive swap alpha 1 gen 2 to bravo one
  421. Blind mounting swim ladder? - 89 Baja 226 Islander
  422. Advantage 27' rear seat removal
  423. Where to get gaskets 5.7 mag gen +?
  424. Imco riser gaskets
  425. 502 build
  426. External steering on a B1 vs XR
  427. 496 intake manifold gasket
  428. RPM Lug
  429. Dominator on 4150 sniper jr with spacer?
  430. 2005 Mercury Racing motors one is low on power
  431. 496 Rockers
  432. More HP in 7.4 MPI's?
  433. Bad Vibration, need help troubleshooting
  434. Hours vs mileage.
  435. Gear oil bottles
  436. Tuning 350 Vortec w/ LT4 Hot Cam & Holley 750 Double Pumper
  437. Anyone have oem MEFI1-4 tunes for 502MPI?
  438. Rpm issue ideas.... I'm lost....
  439. Any recomendations for a Surveyor near Gainsville Ga?
  440. Pontoon steering help
  441. 7.4 MPI low power
  442. Need help with block serial numbers
  443. Sea Strainer question Bravo Hose size?
  444. Stuck cabin door.....
  445. Loss of oil pressure after rough ride
  446. 32 fever sealing
  447. Supercharger Questions
  448. Mercruiser Alternator Upgrade?
  449. WTH is going on with my oil temp
  450. What is fuel pressure spec on 2001 7.4 454 mpi Mag?
  451. 540 NA MEFI 3 Intake Vacuum Question
  452. Help with prop
  453. Opinions on 1989 575hp bulldog 540ci and ssm 3 drives?
  454. 2003 496 HO dreaded two beep alarm
  455. 502 MPI Low Fuel Pressure
  456. 300xs ECU
  457. Strange noise... please help!
  458. How can I tell if my motor is inter or ext balanced
  459. Need a trim actuator clap
  460. 1987 454 merc main harness
  461. Newb, sure its not the first time.
  462. what transom work is needed to convert TRS to SSMIII drives?
  463. 600 sci
  464. lunati cam 20010666
  465. lunati cam 20010666
  466. Flush OMC 460 King Cobra - raw water pump in lower unit.
  467. draining the block - easier way? 1/4" valves?
  468. Water Restrictors
  469. need help replacing a harmonic balancer
  470. gen VI 525SC pistons
  471. Identifying 502's
  472. Suction hose
  473. speed gain
  474. Bell housing mounted starter
  475. Russell Check Valve VS. Anti-Siphon Valve
  476. 500efi with blower shop 250s
  477. Dyno sheet
  478. Anybody use Anthony's Marine Engines in St Pete?
  479. 500efi installing blowers
  480. Sonic with a 496 engine noise
  481. Help! 502 efi keeps stalling
  482. 502 efi temperature sending unit?
  483. Please, need help w/ mefi1 502 mpi code 21 and 42
  484. Rebuilding 502's
  485. 540ci 700hp build recipe
  486. 496 Ho question - fuel leak?
  487. 8.2 EFI fuel pump question
  488. Distributor info
  489. 496 Mag HO - slight miss, poor mileage, loss in rpm
  490. Quadrajet flame arrestor
  491. bomar hatch latched pulled off glass
  492. Which is easier?
  493. Plumbing water hull pickup or drive pickup?
  494. Replacing exhaust tips
  495. Main Bearings ?? Mercury Racing
  496. B&M 250/420 Idler Question
  497. Target Air Fuel ration N/A engines.?
  498. 871 Blower experts CHECK IN
  499. Mercury 500 Sea water pump
  500. Water pump direction 500HP vs 502 MPI