View Full Version : General Q & A




  1. Most HP with stock gen 6 crank
  2. Need some tech advice from engine techs
  3. calling brian, with the raylar boat?
  4. Cracked block...New engine ideas
  5. outboard height
  6. Westerbeke Service
  7. Worn valve springs 502 MPI?
  8. Need a valve cover hose fitting p/n for 502 efi
  9. how hard is to replace the starter
  10. Low speed miss
  11. How much oil is ok for a 502mag
  12. HP500EFI runns cold
  13. What is the torque value for a std Bravo top cap??
  14. No start condition
  15. put on the 1050 today
  16. Problem with fuel system
  17. First time changing 502 impeller
  18. Prop and speed calculator
  19. Crankshaft Cutting
  20. How do you pull engine with TRS drive / BW tranny ?
  21. 7.4 MPI overheating
  22. 496 mag oil consumption??
  23. Starter internal difference 10 MT LH vs RH
  24. mercury 850sci
  25. Always friggin' something!
  26. BROKEN VALVE SPRING ??? Help !
  27. Diacom Guru needed Dave_n?????
  28. Head problems
  29. Mirage 25 pitch/ RH on ebay....
  30. Paging 496HO and Diacom Gurus...Again
  31. nosecones or Imco lowers?
  32. Fogging???
  33. Rich overnight
  34. English lesson....
  35. need new windshield
  36. Engine noise
  37. High Volume Oil Pump
  38. cobra engines quality and dependability?
  39. Transom thickness
  40. winnterizing/ethanol
  41. Can a Chevy 383 / 425hp Street Engine be used in a Marine Application?
  42. 96 502 efi vapor lock?
  43. Winterizing question?
  44. carb jetting and pressure?
  45. Heavy Duty Alpha?
  46. Dynamic Compression Ratio versus Octane
  47. Bravo 1 trim angle?
  48. Bilge Blower Direction for best Efficiency & Safety
  49. Latest Powerboat mag - "Power Brokers" article...
  50. Drives tow in or tow out performance settings
  51. Fuel Tank Clean Out
  52. intercoolers of choice
  53. more hp from 496 ho
  54. FYI, I found a great cross-reference for filters (fuel, oil, air)
  55. Realistic Hp 500 Hp
  56. ROLLA Props on EBay (Right Now) What Do You Think? (With EBay LINK)
  57. TPS trouble shooting w/o scan tool
  58. Upgraded engine lost speed any help?
  59. 496HO getting crappy at 3k RPM?
  60. Engine building guru ?'s
  61. 496 connecting rods
  62. Rotella synthetic vs. Mobile one gold cap?
  63. 383 build up
  64. ROLLA Props on Ebay (right now) What do you think?
  65. 82 ish Mercruiser wiring info wanted.
  66. Engine Backfire
  67. alarms/496 ho's going crazy
  68. 502 fuel system questions
  69. 496 Cowl Bolts
  70. Who's using SS Competition Gauges??
  71. Milky Oil, Raised Level
  72. Been Gone For 10 Days
  73. Gimble bearing removal
  74. water pump puley locked up
  75. Cutting open a oil Filter
  76. Sarasota, Fla.
  77. Big Center Console Project...SPEED Question
  78. nitriding trs gear sets
  79. a shaking 540 what the puck????????????
  80. Contact with Cooke!!!
  81. Got Merc 575SCi's? I have a question for ya.
  82. Mercury 525 EFI Steaming
  83. Bad Oil Pump?
  84. 572 GM conversion
  85. How much power would it take to make a 28 cig run 80mph?
  86. prochargers burning up pistons
  87. Boat Cover Mildew
  88. Slight miss?
  89. Compression Ratio???
  90. Engine Pre-Luber
  91. Fogging EFI engines
  92. ? Keith Eickert Dual Tach instructions
  93. help with drive service
  94. Small Block to Big Block??????
  95. How to calculate minimum air vent
  96. 454 stock head flow?
  97. Need wide -tip flathead
  98. Volvo 5.7 Gi DP upgrade options?
  99. 454 heads ?
  100. 502s merc owners
  101. Anyone Know
  102. solenoid....I think
  103. Changing Gears
  104. Anyone ever try...............
  105. 496HO pushrod length
  106. exhaust help can i run my pipes this way
  107. Difference between Bravo 1 and 1X gears
  108. Need #'s For Oil Filter And Oil
  109. OSO Tech Line Opinion
  110. Flo-Torq II whacker?
  111. HELP! Have Pair Racing Props Don't know what drive they fit
  112. fuel tank gauge
  113. Engine hatch will not go up
  114. Intercooler Boost
  115. Front Bearing failure on motor
  116. Number II speedmaster parts
  117. Scan results....need help
  118. Looking For Factory 496 Mercruiser Exhaust Hoses
  119. Don't laugh. . .
  120. hp500 rebuild, cheaper open stock head, or going with new?
  121. Merc Fuel Cooler ...
  122. Price for used Hydromotives?
  123. Please look at these
  124. Possible flooding of cylinders with fuel - calling on the OSO brain trust again...
  125. How to tell difference between heads?
  126. Calling Sb
  127. prop nut torque ??
  128. Trim gauge help.
  129. Payton - your cam comparisons
  130. Something every gear head would love
  131. Carbon Fiber 496/525 Coolant Reservoir
  132. Mercruiser 260 help
  133. bravo 1 problem
  134. 496 Engine malfunction warning due to sensors not connected?
  135. If your Whipple Blower belt breaks....
  136. Batteries keep draining / not recharging
  137. 26' panga 1,300 mi Bahamas/Caicos to NC
  138. Detnoation Problems
  139. panavac crankcase venting
  140. Corsa silent choice?
  141. 502 MPI idle speed
  142. clank, clank, clank...dead in the water!
  143. 38 Fountain setup
  144. 2005 350 mercruiser alarm question
  145. back fire/ miss ???
  146. what prop?
  147. 350 Mag goes into Guardian Mode - Help Please
  148. outdrive issues ?? prop..no work..??
  149. fiberglass gas tank ??
  150. Oil Filter might beat me
  151. bravo1 shifting problems
  152. Need a Merc crashbox manual.
  153. Tab & Trim Cable Replacement ?
  154. Question for you drive people
  155. Right RPM for cruising
  156. Need help with cooling schematic for 496
  157. Keeping an EFI fuel pump primed
  158. Mr. Gadgets Built me some Great Drives
  159. Nose Cone
  160. How To Bypass Omc Shift Assist???????
  161. UnderSide Engine Hatch
  162. How to change XR lower gears?
  163. Correct adhesive sealant for thru hull exhaust tip installation.
  164. GGB and Lofty - 2 of a kind
  165. Brad Penn oils...
  166. GOODT what is the deal?
  167. Anyone running this 509" combo?
  168. Lost 10 mph.Help
  169. 525's oil in coolant ??
  170. MEGASQUIRT injection...anybody used one??
  171. Oil Restricters ?
  172. Anyone got a diagram from mercruiser
  173. dead coils bbc
  174. Gen V Question
  175. Bravo 1 rebuild???
  176. Adjusting lifters 1/2 3/4 maybe more?
  177. replacement for Clarion marine stereo (big hole in dash)? Hopefully with XM?
  178. Electrical Rigging Question
  179. Imco silent choice replacement options
  180. Nooob, have a ??? alpha drive
  181. 496HO Scan Tool Where to Buy?
  182. porpusing problem
  183. HP 500 stock spark plug make and part #?
  184. Can you change a flywheel...
  185. Cam Specs on Merc 900's
  186. Too Lean?
  187. Compression on a 350 Magnum??? Anyone know?
  188. 500 Efi Whipple 2.3 Head ?
  189. Just what is Avaiation Grade oil?
  190. Say Thanks a simple thing to do for our Troops
  191. Can You See The Difference?
  192. Part Numbers
  193. Vortec 100 cc heads
  194. 525 cmi headers
  195. 502 efi
  196. Need stock torque specs for 502
  197. will hp500 valve cover fit on merlin heads?
  198. who wants to lend me a 496ho scan tool
  199. Oil change on fresh rebuild?
  200. IMCO Shorty and Maximus Question
  201. TRS Bellhouses?????
  202. mercruiser water pressure relief valve question
  203. Bow lifter VS Stern Lifter...Props
  204. Which prop should I use??
  205. Need Help
  206. can some one please help me identify this boat?
  207. Gaffrig Shifter Setup
  208. water pressure issue
  209. Winterize motors with Silent Choice
  210. drive trim /pump dosen't work correct
  211. Isky Springs & Manly Valves - Price?
  212. Drive Oil Leaking?
  213. Hey engine guys
  214. water in valve covers..but not on dipstick
  215. speedo not working?
  216. compression for blower motor
  217. Sutphen wiring diagram??
  218. U-joint damage?
  219. Need help troubleshooting
  220. Hatch Actuator / Trim Pump
  221. How do 2 lifters disappear?
  222. Reconditioned Marine Engines
  223. Fuel Pump Questions
  224. after 3 months finally boating again!
  225. leaking water into bilge
  226. Cleaner for salt water spots on glass.
  227. 525SC fuel pump.
  228. Stellings Boxes Peeling/Pitting
  229. GLM Exhaust install / Oil filter mount ??
  230. 635 h.p. out of a 502 ?
  231. 2006 496HO Oil Drain Plug
  232. Max Rpm
  233. 500 efi Oil question
  234. CARPET.....whats good out there
  235. Mako center console / egg beater question
  236. Water in motor
  237. Pulley on 496 Seawater Pump
  238. Mobil 15w-50 question
  239. msd or thunderbolt 4
  240. 7.4 bravo 3 overheat
  241. Grease Me
  242. House/starting Battery
  243. What hp is this 7.4L
  244. Bravo3 30" props vs. Bravo3 27" XR props
  245. Dart vs AFR heads on HP 500
  246. Who has the best 4" Exhaust Tips?
  247. Evinrude Guru's/ Dealers wiring harnesses
  248. Anyone have any experience with Derebery or ASM
  249. Small block build
  250. can this be hot tanked?
  251. Merctrans II Parts
  252. Proper 500HP Carb
  253. Which MSD distributor, locked or not?
  254. Smart Tech vs Bravo
  255. Hp 6 Oil Filter 1st Or 2nd
  256. Newbie Question- Can I use a 90 Bravo one drive to replace a 96?
  257. looking at a blower
  258. Changing Impellars, popping off old impellar key?
  259. engine change
  260. thinking of trading up to a 38zx
  261. MSD 6M-2 help
  262. Operating Temp 225 PRO MAX
  263. 496 repower HELP
  264. Merc 5.0 LX Plug questions
  265. Break-In Procedure on New Engines
  266. Problem With 454 Mags
  267. High Speed Water Pickups
  268. T-496HO's Fuel/Electrical Issue????
  269. Voltage fluctuations
  270. Speedometer not working on Bravo 1
  271. OLD School big Acell SUPER Coil??
  272. supercharging 500 hp's
  273. Shell Rotella synthetic oil?
  274. 5.7 2 barrel to 4
  275. '89 420 Rebuild Time - Advice Needed
  276. 496HO alarm
  277. Just Turned 300 hrs On HP500 Carb Motors
  278. condensation watertemp ?
  279. HP 525 SC blown head
  280. 500HP EFI Question
  281. ECM part number
  282. Tach fluctuates over 4500 rpm
  283. B&M/Holley 420 pulleys
  284. bravo one exhaust bellows
  285. IMCO Thumper vs Revolution Marine vs Kodiak vs ???
  286. Crossover install
  287. 3.5 Whipple on 496HO
  288. Got black paint overspray on white gel deck
  289. Quick alpha one install question
  290. need oil coolers by tomorrow - who do you call?
  291. Clyinder temps on 502 mpi
  292. bleeding IMCO steering.
  293. Bad V10 Twin Turbos By Mesa Racing
  294. 29' Fountain
  295. Leaky Trim Pumps
  296. which advance reading on RINDA scan tool ???
  297. Tachs not readng correctly.
  298. vaccu flush/winterize
  299. 6.2 out 502 or 496 in
  300. Bravo 1, How Mutch HP??
  301. Compression gone in one cylinder
  302. Muffler Extensions
  303. Water in oil...exaust leak?
  304. T-Bolt IV Timing
  305. What is this thing called?
  306. GM dual connector coil
  307. engine just shut off
  308. From 454 to 540...
  309. Searching flywheel #
  310. Oil temp guage not working?
  311. How much Oil in Bilge is Acceptable?
  312. Engine Running Hotter Then Other Engine
  313. Help!!! boat falls on its face @ 3000rpm
  314. #6 HP consumption
  315. Whipple frustrated......I think I tried everything
  316. 1991 454 non mag top end mods?
  317. 50 amp breaker at motor
  318. Sea Trial Checklist?
  319. Is a sea strainer a must ?
  320. Canopy windscreen
  321. Dirty fuel filter?
  322. Hp500 heads
  323. engine removal hoist- lift recommendation
  324. electrical problem
  325. Steamy exhaust
  326. real or fake 496 HO ??
  327. Marine engine questions / discussion - camshaft intake vs exhaust spread
  328. Big block starter options
  329. 496 Cam Question???
  330. Tach Problem/Question
  331. Rev 4 vs Hydromotive vs maximus
  332. Hardin Marine water pump on a Whipple Help
  333. 454 Specs needed please!
  334. Never seen this before
  335. Headers Vs. HP Manifolds
  336. Roller Lifters for a 496HO
  337. Bravo One Lower Unit removal
  338. Anyone familiar with this engine builder
  339. Mercruiser Ignition / Power Systems
  340. K-Plane Cylinder Re-seal
  341. mpi fuel rail mods?
  342. maximum safe trim on bravo
  343. 525 EFI help
  344. Bravo 3 to Bravo 1 swap. How Easy?
  345. 250 Rotors
  346. 496 Heat Exchanger End Caps
  347. Eliminator 380 xp icc
  348. 450 Hp 502
  349. Thundrebolt IV ignition module
  350. info on Volvo 600 dpx package
  351. What is this valve for???
  352. WOT water temps
  353. Crazy thermostat housing dilemma
  354. converting to SBC
  355. MSD ready-to-run Distributor pn 8360
  356. electric fuel pump questions
  357. Thermostat or not?
  358. bellhousing bushings
  359. 1075 Total Hour Report
  360. 496 HO header gasket ?
  361. 500 Efi What Is Too Hot
  362. How often do you go WOT?
  363. center window (walk through) for Baja38spec
  364. Who carries Bravo 1 XR Upper Gear Set 1.5 Ratio?
  365. Mercury Racing Dash Indicators?
  366. 502 425hp cam suggestion
  367. Trim Cylinder Question
  368. Info On 300 Promax
  369. 454 carb to 496 ?'s
  370. 502 timing with crane cam
  371. High Elevation Performance
  372. Relief Valve
  373. X dimention on trips
  374. Spacer results 1 inch
  375. Bravo 1 drive Showers
  376. HELP: Low pressure at lifters while priming...
  377. Bee Hive Valve Springs
  378. Need some drive "help"
  379. distributor shaft size
  380. code reader
  381. stand off box?
  382. How much torque?
  383. 2000 HP 500 Carb
  384. Whipplecharger;there #?
  385. Rocker arm replacement
  386. 525sc intercooled
  387. Wiring harness help
  388. back flushing closed cooling on 496HO ???
  389. Whats a 502, 415 HP worth?
  390. Fouled plugs at idle speeds
  391. Ignition problem...I think
  392. BY-Pass Valve for Procharger
  393. Livorsi controls...diode needed?
  394. gear ratios
  395. baja outlaw 25 vinyl
  396. Help 1985 Scarab 454 engine trouble
  397. loud ping from engine.
  398. Ran aground this weekend........
  399. Timing Chain Jumped?
  400. Fram - Oil Pressure
  401. Help.brokern lifters
  402. BMax vs. Max Machine
  403. Twin I/O Power Steering units
  404. "Red" Bravo Trailering Clips
  405. Outdrive Bravo 3
  406. Outdrive
  407. HP500EFI alternator, alternatives.
  408. cmi etop light vs big sport tubes
  409. 525sc rebuild questions
  410. I understand but not new style Bravo1X
  411. Holley jetting questions
  412. Power Trim Switch
  413. 502s baja342help
  414. HP500 EFI Oil Temp Question
  415. Drive cooling idea?
  416. Drives out of sync
  417. procharger idle problem
  418. Big Block Circulating Water Pump
  419. New build
  420. What spark plug for a 355 inch in my wellcraft
  421. TRS load ring
  422. Bravo blues?
  423. Setting Timing Delco Voyager
  424. Building 509 need advice on best comb
  425. Piston Valve Relief Cutting Tool Wanted
  426. Piston Valve Relief Cutting Tool
  427. Looking for a thermo switch??
  428. starter problems-need help pls
  429. Crack in trs lower
  430. Av Gas?
  431. xr drive install
  432. Aeromotive Fuel Regulator Vaccuum Line Nipple
  433. My RPM gauge barely works - diagnosis?
  434. Stainless Marine & Cooling System Mods with Nylon "T" Fittings
  435. FAST O2 portable meter
  436. What fuel grade for 454mags?
  437. u joint life.
  438. dual water pickups xr bravo
  439. product Recipe directly from 3M for gelcoat maintenance
  440. carbed hp500's run rich
  441. Oil pressure is 80 -100 psi, Is this OK
  442. Quartering Seas and Tabs.........
  443. Engine Paint
  444. Has anyone here tried Arneson Rocker Plates?
  445. uneven boat
  446. Dry Exhaust and Cam Choice
  447. OSO GURU's - Please Help - Questions on Lightening Headers
  448. blowing up trim cylinders
  449. FAST(tm) O2 meter
  450. bad valve springs
  451. oil lines and oil coolers
  452. Procharger Boost Pressure differential
  453. whats the best affordable 28-30 twin engine boat
  454. HP500EFI still runs too hot
  455. velocity chine walk.
  456. Drive Gear Question
  457. Looking For Turbo Chev V-8 Motor
  458. So what makes a Carb....
  459. (another) CARB question: 650 Holley
  460. Work Benches
  461. Bravo Drive Oil Question
  462. Question about matching trailer to boat
  463. Need help?
  464. any thoughts on this?
  465. 1996 baja 454 Mag losing power
  466. Calling GoodT
  467. Red Light In Center Of Oil Pressure Guage Flicks On
  468. Survey in Michigan
  469. BBC Water pressure target?
  470. Borg Warner temp?
  471. pounds of compression
  472. No oil pressure @ idle
  473. carb jetting on a hp 500
  474. Boat insurance
  475. 1997 454 Merc. MAG MPI - Idle/Surging issue
  476. High flow non-bypass oil filter
  477. Bravo One w/ Corsa diverters
  478. #6 drives, what other options are there?
  479. procharged 502 cam suggestions?
  480. Fuel pick up problems
  481. Labb Prop
  482. Adding a procharger to a 300hour hp500efi ?
  483. It's Interesting and Fun!
  484. Gaffrig/Livorsi Electronic Compass
  485. here a good one I've never heard of before
  486. Help - Backfiring Issue on Blown 454
  487. Merc Ing. Distrubitors
  488. Power trim
  489. mcm 350 mag misses at WOT
  490. no up trim just down
  491. Help please - HP500EFI running too hot
  492. bravo1 question
  493. 1150 cfm Dominator on 250 blower
  494. B-Max drive
  495. bravo spacers and max worx bravo drives
  496. 502 425HP tuning with crane cam ignition
  497. Gasket Sealer on Felpro Marine headn gaskets
  498. How do you remove painted graphics???
  499. Pre alpha outleg
  500. baja 342 mag 502s help