View Full Version : General Q & A




  1. Mirage 25 pitch/ RH on ebay....
  2. Paging 496HO and Diacom Gurus...Again
  3. nosecones or Imco lowers?
  4. Fogging???
  5. Rich overnight
  6. English lesson....
  7. need new windshield
  8. Engine noise
  9. High Volume Oil Pump
  10. cobra engines quality and dependability?
  11. Transom thickness
  12. winnterizing/ethanol
  13. Can a Chevy 383 / 425hp Street Engine be used in a Marine Application?
  14. 96 502 efi vapor lock?
  15. Winterizing question?
  16. carb jetting and pressure?
  17. Heavy Duty Alpha?
  18. Dynamic Compression Ratio versus Octane
  19. Bravo 1 trim angle?
  20. Bilge Blower Direction for best Efficiency & Safety
  21. Latest Powerboat mag - "Power Brokers" article...
  22. Drives tow in or tow out performance settings
  23. Fuel Tank Clean Out
  24. intercoolers of choice
  25. more hp from 496 ho
  26. FYI, I found a great cross-reference for filters (fuel, oil, air)
  27. Realistic Hp 500 Hp
  28. ROLLA Props on EBay (Right Now) What Do You Think? (With EBay LINK)
  29. TPS trouble shooting w/o scan tool
  30. Upgraded engine lost speed any help?
  31. 496HO getting crappy at 3k RPM?
  32. Engine building guru ?'s
  33. 496 connecting rods
  34. Rotella synthetic vs. Mobile one gold cap?
  35. 383 build up
  36. ROLLA Props on Ebay (right now) What do you think?
  37. 82 ish Mercruiser wiring info wanted.
  38. Engine Backfire
  39. alarms/496 ho's going crazy
  40. 502 fuel system questions
  41. 496 Cowl Bolts
  42. Who's using SS Competition Gauges??
  43. Milky Oil, Raised Level
  44. Been Gone For 10 Days
  45. Gimble bearing removal
  46. water pump puley locked up
  47. Cutting open a oil Filter
  48. Sarasota, Fla.
  49. Big Center Console Project...SPEED Question
  50. nitriding trs gear sets
  51. a shaking 540 what the puck????????????
  52. Contact with Cooke!!!
  53. Got Merc 575SCi's? I have a question for ya.
  54. Mercury 525 EFI Steaming
  55. Bad Oil Pump?
  56. 572 GM conversion
  57. How much power would it take to make a 28 cig run 80mph?
  58. prochargers burning up pistons
  59. Boat Cover Mildew
  60. Slight miss?
  61. Compression Ratio???
  62. Engine Pre-Luber
  63. Fogging EFI engines
  64. ? Keith Eickert Dual Tach instructions
  65. help with drive service
  66. Small Block to Big Block??????
  67. How to calculate minimum air vent
  68. 454 stock head flow?
  69. Need wide -tip flathead
  70. Volvo 5.7 Gi DP upgrade options?
  71. 454 heads ?
  72. 502s merc owners
  73. Anyone Know
  74. solenoid....I think
  75. Changing Gears
  76. Anyone ever try...............
  77. 496HO pushrod length
  78. exhaust help can i run my pipes this way
  79. Difference between Bravo 1 and 1X gears
  80. Need #'s For Oil Filter And Oil
  81. OSO Tech Line Opinion
  82. Flo-Torq II whacker?
  83. HELP! Have Pair Racing Props Don't know what drive they fit
  84. fuel tank gauge
  85. Engine hatch will not go up
  86. Intercooler Boost
  87. Front Bearing failure on motor
  88. Number II speedmaster parts
  89. Scan results....need help
  90. Looking For Factory 496 Mercruiser Exhaust Hoses
  91. Don't laugh. . .
  92. hp500 rebuild, cheaper open stock head, or going with new?
  93. Merc Fuel Cooler ...
  94. Price for used Hydromotives?
  95. Please look at these
  96. Possible flooding of cylinders with fuel - calling on the OSO brain trust again...
  97. How to tell difference between heads?
  98. Calling Sb
  99. prop nut torque ??
  100. Trim gauge help.
  101. Payton - your cam comparisons
  102. Something every gear head would love
  103. Carbon Fiber 496/525 Coolant Reservoir
  104. Mercruiser 260 help
  105. bravo 1 problem
  106. 496 Engine malfunction warning due to sensors not connected?
  107. If your Whipple Blower belt breaks....
  108. Batteries keep draining / not recharging
  109. 26' panga 1,300 mi Bahamas/Caicos to NC
  110. Detnoation Problems
  111. panavac crankcase venting
  112. Corsa silent choice?
  113. 502 MPI idle speed
  114. clank, clank, clank...dead in the water!
  115. 38 Fountain setup
  116. 2005 350 mercruiser alarm question
  117. back fire/ miss ???
  118. what prop?
  119. 350 Mag goes into Guardian Mode - Help Please
  120. outdrive issues ?? prop..no work..??
  121. fiberglass gas tank ??
  122. Oil Filter might beat me
  123. bravo1 shifting problems
  124. Need a Merc crashbox manual.
  125. Tab & Trim Cable Replacement ?
  126. Question for you drive people
  127. Right RPM for cruising
  128. Need help with cooling schematic for 496
  129. Keeping an EFI fuel pump primed
  130. Mr. Gadgets Built me some Great Drives
  131. Nose Cone
  132. How To Bypass Omc Shift Assist???????
  133. UnderSide Engine Hatch
  134. How to change XR lower gears?
  135. Correct adhesive sealant for thru hull exhaust tip installation.
  136. GGB and Lofty - 2 of a kind
  137. Brad Penn oils...
  138. GOODT what is the deal?
  139. Anyone running this 509" combo?
  140. Lost 10 mph.Help
  141. 525's oil in coolant ??
  142. MEGASQUIRT injection...anybody used one??
  143. Oil Restricters ?
  144. Anyone got a diagram from mercruiser
  145. dead coils bbc
  146. Gen V Question
  147. Bravo 1 rebuild???
  148. Adjusting lifters 1/2 3/4 maybe more?
  149. replacement for Clarion marine stereo (big hole in dash)? Hopefully with XM?
  150. Electrical Rigging Question
  151. Imco silent choice replacement options
  152. Nooob, have a ??? alpha drive
  153. 496HO Scan Tool Where to Buy?
  154. porpusing problem
  155. HP 500 stock spark plug make and part #?
  156. Can you change a flywheel...
  157. Cam Specs on Merc 900's
  158. Too Lean?
  159. Compression on a 350 Magnum??? Anyone know?
  160. 500 Efi Whipple 2.3 Head ?
  161. Just what is Avaiation Grade oil?
  162. Say Thanks a simple thing to do for our Troops
  163. Can You See The Difference?
  164. Part Numbers
  165. Vortec 100 cc heads
  166. 525 cmi headers
  167. 502 efi
  168. Need stock torque specs for 502
  169. will hp500 valve cover fit on merlin heads?
  170. who wants to lend me a 496ho scan tool
  171. Oil change on fresh rebuild?
  172. IMCO Shorty and Maximus Question
  173. TRS Bellhouses?????
  174. mercruiser water pressure relief valve question
  175. Bow lifter VS Stern Lifter...Props
  176. Which prop should I use??
  177. Need Help
  178. can some one please help me identify this boat?
  179. Gaffrig Shifter Setup
  180. water pressure issue
  181. Winterize motors with Silent Choice
  182. drive trim /pump dosen't work correct
  183. Isky Springs & Manly Valves - Price?
  184. Drive Oil Leaking?
  185. Hey engine guys
  186. water in valve covers..but not on dipstick
  187. speedo not working?
  188. compression for blower motor
  189. Sutphen wiring diagram??
  190. U-joint damage?
  191. Need help troubleshooting
  192. Hatch Actuator / Trim Pump
  193. How do 2 lifters disappear?
  194. Reconditioned Marine Engines
  195. Fuel Pump Questions
  196. after 3 months finally boating again!
  197. leaking water into bilge
  198. Cleaner for salt water spots on glass.
  199. 525SC fuel pump.
  200. Stellings Boxes Peeling/Pitting
  201. GLM Exhaust install / Oil filter mount ??
  202. 635 h.p. out of a 502 ?
  203. 2006 496HO Oil Drain Plug
  204. Max Rpm
  205. 500 efi Oil question
  206. CARPET.....whats good out there
  207. Mako center console / egg beater question
  208. Water in motor
  209. Pulley on 496 Seawater Pump
  210. Mobil 15w-50 question
  211. msd or thunderbolt 4
  212. 7.4 bravo 3 overheat
  213. Grease Me
  214. House/starting Battery
  215. What hp is this 7.4L
  216. Bravo3 30" props vs. Bravo3 27" XR props
  217. Dart vs AFR heads on HP 500
  218. Who has the best 4" Exhaust Tips?
  219. Evinrude Guru's/ Dealers wiring harnesses
  220. Anyone have any experience with Derebery or ASM
  221. Small block build
  222. can this be hot tanked?
  223. Merctrans II Parts
  224. Proper 500HP Carb
  225. Which MSD distributor, locked or not?
  226. Smart Tech vs Bravo
  227. Hp 6 Oil Filter 1st Or 2nd
  228. Newbie Question- Can I use a 90 Bravo one drive to replace a 96?
  229. looking at a blower
  230. Changing Impellars, popping off old impellar key?
  231. engine change
  232. thinking of trading up to a 38zx
  233. MSD 6M-2 help
  234. Operating Temp 225 PRO MAX
  235. 496 repower HELP
  236. Merc 5.0 LX Plug questions
  237. Break-In Procedure on New Engines
  238. Problem With 454 Mags
  239. High Speed Water Pickups
  240. T-496HO's Fuel/Electrical Issue????
  241. Voltage fluctuations
  242. Speedometer not working on Bravo 1
  243. OLD School big Acell SUPER Coil??
  244. supercharging 500 hp's
  245. Shell Rotella synthetic oil?
  246. 5.7 2 barrel to 4
  247. '89 420 Rebuild Time - Advice Needed
  248. 496HO alarm
  249. Just Turned 300 hrs On HP500 Carb Motors
  250. condensation watertemp ?
  251. HP 525 SC blown head
  252. 500HP EFI Question
  253. ECM part number
  254. Tach fluctuates over 4500 rpm
  255. B&M/Holley 420 pulleys
  256. bravo one exhaust bellows
  257. IMCO Thumper vs Revolution Marine vs Kodiak vs ???
  258. Crossover install
  259. 3.5 Whipple on 496HO
  260. Got black paint overspray on white gel deck
  261. Quick alpha one install question
  262. need oil coolers by tomorrow - who do you call?
  263. Clyinder temps on 502 mpi
  264. bleeding IMCO steering.
  265. Bad V10 Twin Turbos By Mesa Racing
  266. 29' Fountain
  267. Leaky Trim Pumps
  268. which advance reading on RINDA scan tool ???
  269. Tachs not readng correctly.
  270. vaccu flush/winterize
  271. 6.2 out 502 or 496 in
  272. Bravo 1, How Mutch HP??
  273. Compression gone in one cylinder
  274. Muffler Extensions
  275. Water in oil...exaust leak?
  276. T-Bolt IV Timing
  277. What is this thing called?
  278. GM dual connector coil
  279. engine just shut off
  280. From 454 to 540...
  281. Searching flywheel #
  282. Oil temp guage not working?
  283. How much Oil in Bilge is Acceptable?
  284. Engine Running Hotter Then Other Engine
  285. Help!!! boat falls on its face @ 3000rpm
  286. #6 HP consumption
  287. Whipple frustrated......I think I tried everything
  288. 1991 454 non mag top end mods?
  289. 50 amp breaker at motor
  290. Sea Trial Checklist?
  291. Is a sea strainer a must ?
  292. Canopy windscreen
  293. Dirty fuel filter?
  294. Hp500 heads
  295. engine removal hoist- lift recommendation
  296. electrical problem
  297. Steamy exhaust
  298. real or fake 496 HO ??
  299. Marine engine questions / discussion - camshaft intake vs exhaust spread
  300. Big block starter options
  301. 496 Cam Question???
  302. Tach Problem/Question
  303. Rev 4 vs Hydromotive vs maximus
  304. Hardin Marine water pump on a Whipple Help
  305. 454 Specs needed please!
  306. Never seen this before
  307. Headers Vs. HP Manifolds
  308. Roller Lifters for a 496HO
  309. Bravo One Lower Unit removal
  310. Anyone familiar with this engine builder
  311. Mercruiser Ignition / Power Systems
  312. K-Plane Cylinder Re-seal
  313. mpi fuel rail mods?
  314. maximum safe trim on bravo
  315. 525 EFI help
  316. Bravo 3 to Bravo 1 swap. How Easy?
  317. 250 Rotors
  318. 496 Heat Exchanger End Caps
  319. Eliminator 380 xp icc
  320. 450 Hp 502
  321. Thundrebolt IV ignition module
  322. info on Volvo 600 dpx package
  323. What is this valve for???
  324. WOT water temps
  325. Crazy thermostat housing dilemma
  326. converting to SBC
  327. MSD ready-to-run Distributor pn 8360
  328. electric fuel pump questions
  329. Thermostat or not?
  330. bellhousing bushings
  331. 1075 Total Hour Report
  332. 496 HO header gasket ?
  333. 500 Efi What Is Too Hot
  334. How often do you go WOT?
  335. center window (walk through) for Baja38spec
  336. Who carries Bravo 1 XR Upper Gear Set 1.5 Ratio?
  337. Mercury Racing Dash Indicators?
  338. 502 425hp cam suggestion
  339. Trim Cylinder Question
  340. Info On 300 Promax
  341. 454 carb to 496 ?'s
  342. 502 timing with crane cam
  343. High Elevation Performance
  344. Relief Valve
  345. X dimention on trips
  346. Spacer results 1 inch
  347. Bravo 1 drive Showers
  348. HELP: Low pressure at lifters while priming...
  349. Bee Hive Valve Springs
  350. Need some drive "help"
  351. distributor shaft size
  352. code reader
  353. stand off box?
  354. How much torque?
  355. 2000 HP 500 Carb
  356. Whipplecharger;there #?
  357. Rocker arm replacement
  358. 525sc intercooled
  359. Wiring harness help
  360. back flushing closed cooling on 496HO ???
  361. Whats a 502, 415 HP worth?
  362. Fouled plugs at idle speeds
  363. Ignition problem...I think
  364. BY-Pass Valve for Procharger
  365. Livorsi controls...diode needed?
  366. gear ratios
  367. baja outlaw 25 vinyl
  368. Help 1985 Scarab 454 engine trouble
  369. loud ping from engine.
  370. Ran aground this weekend........
  371. Timing Chain Jumped?
  372. Fram - Oil Pressure
  373. Help.brokern lifters
  374. BMax vs. Max Machine
  375. Twin I/O Power Steering units
  376. "Red" Bravo Trailering Clips
  377. Outdrive Bravo 3
  378. Outdrive
  379. HP500EFI alternator, alternatives.
  380. cmi etop light vs big sport tubes
  381. 525sc rebuild questions
  382. I understand but not new style Bravo1X
  383. Holley jetting questions
  384. Power Trim Switch
  385. 502s baja342help
  386. HP500 EFI Oil Temp Question
  387. Drive cooling idea?
  388. Drives out of sync
  389. procharger idle problem
  390. Big Block Circulating Water Pump
  391. New build
  392. What spark plug for a 355 inch in my wellcraft
  393. TRS load ring
  394. Bravo blues?
  395. Setting Timing Delco Voyager
  396. Building 509 need advice on best comb
  397. Piston Valve Relief Cutting Tool Wanted
  398. Piston Valve Relief Cutting Tool
  399. Looking for a thermo switch??
  400. starter problems-need help pls
  401. Crack in trs lower
  402. Av Gas?
  403. xr drive install
  404. Aeromotive Fuel Regulator Vaccuum Line Nipple
  405. My RPM gauge barely works - diagnosis?
  406. Stainless Marine & Cooling System Mods with Nylon "T" Fittings
  407. FAST O2 portable meter
  408. What fuel grade for 454mags?
  409. u joint life.
  410. dual water pickups xr bravo
  411. product Recipe directly from 3M for gelcoat maintenance
  412. carbed hp500's run rich
  413. Oil pressure is 80 -100 psi, Is this OK
  414. Quartering Seas and Tabs.........
  415. Engine Paint
  416. Has anyone here tried Arneson Rocker Plates?
  417. uneven boat
  418. Dry Exhaust and Cam Choice
  419. OSO GURU's - Please Help - Questions on Lightening Headers
  420. blowing up trim cylinders
  421. FAST(tm) O2 meter
  422. bad valve springs
  423. oil lines and oil coolers
  424. Procharger Boost Pressure differential
  425. whats the best affordable 28-30 twin engine boat
  426. HP500EFI still runs too hot
  427. velocity chine walk.
  428. Drive Gear Question
  429. Looking For Turbo Chev V-8 Motor
  430. So what makes a Carb....
  431. (another) CARB question: 650 Holley
  432. Work Benches
  433. Bravo Drive Oil Question
  434. Question about matching trailer to boat
  435. Need help?
  436. any thoughts on this?
  437. 1996 baja 454 Mag losing power
  438. Calling GoodT
  439. Red Light In Center Of Oil Pressure Guage Flicks On
  440. Survey in Michigan
  441. BBC Water pressure target?
  442. Borg Warner temp?
  443. pounds of compression
  444. No oil pressure @ idle
  445. carb jetting on a hp 500
  446. Boat insurance
  447. 1997 454 Merc. MAG MPI - Idle/Surging issue
  448. High flow non-bypass oil filter
  449. Bravo One w/ Corsa diverters
  450. #6 drives, what other options are there?
  451. procharged 502 cam suggestions?
  452. Fuel pick up problems
  453. Labb Prop
  454. Adding a procharger to a 300hour hp500efi ?
  455. It's Interesting and Fun!
  456. Gaffrig/Livorsi Electronic Compass
  457. here a good one I've never heard of before
  458. Help - Backfiring Issue on Blown 454
  459. Merc Ing. Distrubitors
  460. Power trim
  461. mcm 350 mag misses at WOT
  462. no up trim just down
  463. Help please - HP500EFI running too hot
  464. bravo1 question
  465. 1150 cfm Dominator on 250 blower
  466. B-Max drive
  467. bravo spacers and max worx bravo drives
  468. 502 425HP tuning with crane cam ignition
  469. Gasket Sealer on Felpro Marine headn gaskets
  470. How do you remove painted graphics???
  471. Pre alpha outleg
  472. baja 342 mag 502s help
  473. Could not find the thread..
  474. Warning alarm comes on,no problems
  475. Anatomy of replacing a shift cable...
  476. Velvet Drive help? + Pictures of a 10-18
  477. Moters?? 502 454 500??
  478. prochager problems continued 7.4 mpi
  479. How Accurate is your GPS Speedo?
  480. spark plugs?
  481. Cobra Outdrive Trashed, What Can I Swap It Out With?
  482. TRS vs Bravo
  483. Help with alpha gimble bearing!
  484. Boat Surveyor (Houston, Texas)
  485. Code 33, Still on
  486. Water in the cylinders!!! Help.
  487. mercury weber carbs 350 mag
  488. Gates Belts
  489. Long Lake Naples ME?????
  490. 454 To A 502?
  491. black mold in toilet
  492. Alternators
  493. Bravo 2X vs 3X efficiency
  494. trim tab question
  495. racoon2us
  496. Whippled Engine And Salt Water Use
  497. Exhaust install and poor performance
  498. Hard lesson's learned
  499. Will stock 502 Mag injectors work with a whipple at 4lbs?
  500. Chine Beams