View Full Version : General Q & A




  1. Flushing with thermostats (with holes drilled)
  2. K Plane hydraulic fitting available lengths? Part numbers? suppliers?
  3. 96' 502 mpi, low fuel pressure
  4. Stupid mistake - have I done any damage
  5. Testing an ignition module
  6. looking for drive shaft housing & bearings
  7. Water pressure question, Before I put it back together?
  8. Rochester question
  9. 525 EFI refresh lifter issue!!!
  10. Carburetor to EFI conversions
  11. what kind of boat is this
  12. 525 efi headers
  13. Has Anyone done high compression e85 motors on a big boat?
  14. TRS drive install
  15. 500 EFI noob help
  16. Detonation melted my piston..... but what caused the detonation?
  17. 1991 Baja steering problem
  18. What fuel pump for a 502 making 600+hp.
  19. 2003 evinrude 115hp 2atroke outboard
  20. cam info needed
  21. zero out tach
  22. What gasket surface cleaner?
  23. Cometic gasket surface RA
  24. 26 hustler vs 25 active thunder tantrum with similar power?
  25. 500efi head upgrades
  26. Merctrans linkage/brackets help (man-shift)
  27. What's a good price and will it work ?
  28. 502 burning up water pump impellors.
  29. vertical stack batteries
  30. Looking for proper Mercruiser service manual p/n's.......
  31. Closed Bow or Mid Cuddy open bow?
  32. Cleaning under trailer bunks
  33. 2 stage sea pump rebuild
  34. 496ho Impeller question
  35. Wasted Bravo 1 swivel shaft/steering pin?
  36. Dual water temp sending units on HP500??
  37. crossover on hp500
  38. upgrading to 33c cables
  39. Crossover temp problem HELP
  40. Dual Ram Power Steering Issues
  41. CMI dealer
  42. O2 Sensor in Riser
  43. Recommended fuel line sizes to support NA 575 HP
  44. y pipe diffrence
  45. Holley carb paint / powdercoat suggestions
  46. Need an answer to back pressure
  47. Blower carbs what to run ?
  48. Ok, Ok, I need a new steering wheel...
  49. Dropped a valve!!!!!!!
  50. Bravo Drive Coupler Grease Cup?
  51. Livorsi / Vessel View / Vantage View ? wanting to upgrade dash
  52. What size is a 86 cig mistress 35??
  53. Are outboards really that much cheaper to run?
  54. need help with a simple wiring issue
  55. 496 or 502??
  56. Power Shift
  57. 500 Efi fuel pressure regulator?
  58. Bouncing Tach, need more suggestions already searched! Confused!
  59. H2x vs donzi
  60. hp500 distributor fit on 500efi
  61. oil temp
  62. Lift points on a '83 Scarab 377
  63. Help with new 540 flywheel selection!
  64. 454 MPI Random Power Loss
  65. Bravo Trim ram - only one working?
  66. Fuel pump Q?
  67. What is wrong with these head gaskets
  68. aftermarket alum heads..clear 454 mag piston domes?
  69. 454 mag mpi lack of power? Idles and revs fine, no miss
  70. How often do your routinely clean your air intake(s)
  71. Speedometer pickup?
  72. Spintron
  73. velvet a73c
  74. 525 water pressure problem
  75. BBC Engine missing side caps?
  76. Morel 4603 lifter noise
  77. What widebands you guys running??
  78. What Prestolite pump for an Alpha 1 '86 outdrive and the differences between them
  79. What is this??
  80. Need help with a inject blown 572's that will not run in gear
  81. anyone have any info on Opcon/Imco whipplechargers?
  82. Carpet under seat bottom bases or not?
  83. Springs pressures and valvetrain life
  84. Nothing left to check? VP 5.7GSI wont start - good fuel pressure, good ecm, wiring
  85. Formula 330 SS re-power
  86. Blowers 454 engines and compression ratio?
  87. What cleaning solution to water in oil cooler and lines?
  88. Bravo 1 props
  89. Cmi air cylinders
  90. Smartcraft/AGI Box ?
  91. Are the mercruiser M1 camshaft still available?? I need One
  92. Very high water pressure
  93. 383 mpi , buzzer , stalling help please
  94. 525 EFI intake gasket options
  95. Best product for bedding trim tabs +transom assemblies
  96. Looking for feedback on carbed HP500s
  97. Wrinkled Looking Vinyl......what's up?
  98. getting rid of the vst tank
  99. DUI Live Wires
  100. Dominator tuning
  101. Wierd tuning issue with Whipple engine - Holley ecu
  102. Bravo XR with finned top cap torque spec
  103. SSM prop pitch
  104. ARP head bolts for 525EFI part #
  105. Valve Cover Breathers: What Works?
  106. 525EFI oil pump driver/sensor position
  107. Hydraulic Steering
  108. b&m 250 mpi blower questions on a 509
  109. mk hammer marine
  110. Flushing tubular oil cooler... yes or no??
  111. Plumbing for flushing or trailer running.
  112. Exhaust Bolts
  113. Old or new partnumbers oil pump 525 EFI ?
  114. Going through electric fuel pumps. Why?
  115. Need a good Prop Shop In Portland Oregon??
  116. 8.2L Impeller Replacement
  117. Oil pump help
  118. AFR with procharged setup
  119. What size headers
  120. 2008 mirage wo6
  121. Pop up cleats
  122. 3/16 inverted flare hose fitting
  123. difference in a 496 mag base model and a 496 mag ec model
  124. Any ideas on where to get parts for Captians Choice Exhaust? 525 sc
  125. how many quarts?
  126. Broken Whipple Pulley Studs
  127. Change plugs after fogging?
  128. Bosch oil filter, thread buggered up
  129. Tranny vs bravo boats
  130. Did I just blow an engine?
  131. 217 mirage fuel gauge
  132. Intake manifold gasket question 454/330
  133. Remote Oil filter
  134. mechanical fuel pump questions on bbc
  135. Fuel injector cleaning
  136. 2 power steering pumps or just 1?
  137. Beehive Valve Springs. What if any are the downfall of these springs??
  138. intake manifold torque lbs
  139. 1987 wellcraft 26 spyder
  140. 496 Vortec Cam Swap to Crane cam?
  141. Cool fuel replacement to Aeromotive
  142. Kohler 5E - Genset Help
  143. Gasket kits question...
  144. Marine grade silicone
  145. Switch / circuit breaker help??
  146. Swim Platform Material
  147. Source for stainless "T" in 1-1/2 inch
  148. Speed Loss From Speedo Pitot?
  149. Engine builder
  150. Cmi e top header question
  151. 575 sci wont start
  152. rocker arm stud diflection
  153. Where to buy hatches
  154. 496ci 585hp tuneup
  155. Mercruiser Exhaust y-pipe 44265-C tube y pipe compatable
  156. Anyone have external full hydraulic steering on sonic prowler
  157. 600sci cam good for a 502 carbureted
  158. HP500 spark plugs
  159. Fast EZ-EFI 2.0
  160. Rub rail
  161. few questions with new build
  162. Exhaust tips and turndown options, and drive shower
  163. High Mileage Vehicle(s) - What oil?
  164. Making interior side panels
  165. Helical asymmetrical oil pump
  166. Latest Generation Mopar Hemi Engines...
  167. How to prevent your arm hairs from standing on end?
  168. Fuel tanks feed unevenly need a hopefully cheap fix
  169. Engine synchronization on hp 500's
  170. Blue 500s hourly maintenance ???
  171. Fiberglass repair in NJ
  172. Anyone ever had a couple parts sand casted or are in the casting business?
  173. Drive alignment question
  174. Can anybody tell me what cam this is?
  175. SBC circulation pump impeller failure.
  176. isky hydrualic lifters in a dart big m block
  177. Another header question
  178. mercruiser impeller vs quicksilver
  179. 502 Mpi procharger to 540
  180. Accessory drive pulley question
  181. mobile delvac
  182. oil cooler thermostat line routing
  183. 496ho oil
  184. Turndowns or DM tips on 29 Fever
  185. Maybe some input from you seasoned guys regarding motor
  186. silencers
  187. What goes here?
  188. Performance Distributors
  189. Late Model Bravo One Drive Swept Back Upper
  190. Help ID 5.7LX Mercruiser Engine
  191. FlexiDock - Dry Docking
  192. Agree or Disagree?
  193. need power sttering hose fitting size or adaptor help please......
  194. pixie dust.
  195. Dilemma with harmonic damper replacement!
  196. iPad navigation app?
  197. 525 Sea/Fuel Pump
  198. Head Gasket Replacement Cost
  199. Alega Growth Prevention - Anyone try/Heard of this idea??
  200. American Offshore vs Eliminator tall deck
  201. Midwest Engine Builder
  202. Mystery 502 Cam?
  203. Twin 525s, different fuel consumption, is this normal?
  204. Mercruiser Bell housing shaft and bearing???
  205. HP500 carb
  206. Looking for Offshore Battery Box
  207. 454 pistons
  208. Help! 30' Chris Craft catamaran planning and prop questions
  209. Bravo XR / Short Sportmaster - Splash Plate ???
  210. 454 mpi doesn't idle
  211. Single Plane or Dual Plane Intake
  212. New SCARAB 31 Excel
  213. Replacing lights with LEDs in a Gaffrig Tachometer
  214. Is there a better roller lifter than gm for .....?
  215. Analog Gauge Interface for new style digital trim limit switch
  216. Convert 1050 dominator from alcohol to gas?
  217. New SCARAB 31' EXCEL!!!!!!
  218. AEM or INNOVATE
  219. Procharger intercooler froze!
  220. anyone out there every get water in oil from exhaust sucking back??
  221. Rod color
  222. Stellings headers straight thru or with tips?
  223. information on the merc 260. boat year is 1986 hhelp please!!
  224. Belt drive Cam Retard?
  225. performance upgrades available for volvo penta 8.2 gsi
  226. 496 NA or SC?
  227. Best overall propeller for a Donzi 33 ZX running on twin 502 efi Mercruisers
  228. 33 outlaw throttle/shifter/indicator cables
  229. Fuel Pump Question 548 ci with 256 blower
  230. ignition coil regular maintence
  231. K planes
  232. MSD distrbutor?
  233. Holley 6-valve Mechanical Fuel Pump - parts?
  234. Spark Timing. How it works.
  235. Tryng to get in touch with -SPYDER26- Derek
  236. Upholstery (seat) needed
  237. How to mount gas tank? Best place to buy.
  238. Compression ratio with 250 B&M
  239. ITS transom on Sunsation
  240. Thunderbolt V Ignitition
  241. 454 efi hesitates and has been running warm
  242. flywheel for hp500
  243. Fuel/water separator, can I drill and tap?
  244. Mercury 500 efi 2002. Were to buy parts?
  245. wix oil filters
  246. Bravo Swivel Shaft replacement/parts questions
  247. Autometer water temp gauge help
  248. Kohler Generator 6.5CZ
  249. Smartcraft alarm...fault 94 pitot chk hi
  250. rust spots in exhaust ports of head
  251. Here's a head scratcher! Piston rings...
  252. B&M 250 carb options
  253. Kaama 400hp Carb GM 454 on 1991 Sonic 31ss
  254. High Volume Fuel/Water Separator
  255. Hydraulic Steering?
  256. 8.1 GXi Audible alarm and rough idle
  257. Ha ! Oil Know It All's Can't Know It All Cause Oil Chemists Don't Really Understand
  258. 6.1l crankshaft
  259. Carb opinions 540's 700 hp...
  260. 700SCI Fuel Pressure
  261. Raylar 511cid Stroker Kit for the 496?
  262. What Thought Crosses Your Mind ?
  263. Accessory brackets
  264. 92oct. VS. 90oct. non ethanol?
  265. 2004 288 Sunsation 280 Trim Tabs
  266. What to use to glue the cockpit sole down?
  267. 575 sci Idle Air Control
  268. o ring distrbutor
  269. Gafrig VS livorsi sending unit
  270. private sellers opinion on buyer wanting survey
  271. 22 razor
  272. Kiekhaefer Control Cables
  273. Engine Temperture ?
  274. Mercury Racing 600SCI with Whipple Stage II
  275. 454 fuel leakdown, add Holley red or new carb?
  276. 420hp 454 questions
  277. Ranting.... King Race Bearings
  278. Run Dry Impleller Thought's???
  279. Help Merc 700 Header Bolt Trouble
  280. hydraulic steering problem
  281. How do you remove top hinge pin ssm #6 ?
  282. engine swap alpha gen question
  283. ONCE Again trying to find some Imron paint
  284. What would cause 3 intake valves to leak on a diesel?
  285. Putting in a hp500 with harness
  286. 496 Mag HO water circulation problem
  287. 300 verados choking out
  288. Oil filter...
  289. Identifying a cam, help please
  290. Any suggestions !!!
  291. Power vs reliability
  292. HP increase
  293. Attaching LEDs to trim tabs
  294. Big Chief
  295. cylinder head question
  296. Header gaskets
  297. NEED SWIM PLATFORM FOR 88 Forumula 272
  298. 350 mag mpi no spark
  299. Assault heads
  300. Vacum Pumps for crankcase
  301. Windscreens
  302. Optimal Squish
  303. 34' Super Hawaii info? "Hawaii five Owe" in classifieds?
  304. Which blower to upgrade to?
  305. Intake Manifold Gaskets
  306. Camshaft sprocket question
  307. What's the difference between 088 and 2934 heads?
  308. HP500 oil thermostat oil bypass valve?
  309. HP500 carb thermostat aassymbly question
  310. What's wrong with AFR's exhaust port?
  311. Water / Meth. Injection
  312. Bore Notching
  313. What's you're opinion... stroke vs. bore
  314. Fountain Seats Covered
  315. 525 El fuel pump relay?
  316. merc high altitude pulley?
  317. Looking for information on an odd boat predator powerboats
  318. BBC Rocker Arms
  319. DiMarco engine.
  320. Identify these steering rams
  321. forged stock crank; mains .020 rods .030... worth buying or cut too deep?
  322. Ring end gaps
  323. Bypass and blow off valves
  324. Pro filer 375cc cnc heads
  325. 454 HP425 Chevy pistons - what would you recommend?
  326. Fuel Pump
  327. Custom full depth boat covers
  328. Bad Transom
  329. Hp drive couplers questions
  330. marine jobs?
  331. No Wood?
  332. Livorsi guages
  333. 525 sc fuel pump
  334. marine sealant (clear)
  335. 700's whipple #3 upgrade specs ?
  336. Fuel Pressure Boost Combo Gauges
  337. Odds and ends for a Gen IV refresh
  338. Garage door issue...
  339. Procharger intercooler corrosion
  340. Oil thermostats
  341. cheap header
  342. 454 first build. Suggestions
  343. Merctrans question
  344. Y pipe on blower motors
  345. Aftermarket heads do they fit all generation bbc
  346. B&M 250 refresh
  347. What is the right carb
  348. Aluminum Engine Hatch Hinges
  349. Engine Cradles For LS Motors and 426 Hemi
  350. flywheel, from bravo to a transmision
  351. cooling water questions
  352. 350 mag mpi, WOT rpm?
  353. To shim or not to shim valve springs
  354. Seebold swim platform?
  355. Formula 242 rpms and props and such
  356. Bearings - Coated or Not?
  357. Thunderbolt or MSD
  358. Bravo flywheel housing 8 plate oil cooler mounting
  359. Cam Identification Question
  360. hp 500 horse power
  361. Crossover and Thermostat housing for use with Procharger
  362. How much does weight matter?
  363. Anodes for trim & steering rams - Bravo XR / ITS ??
  364. Cmi 496HO header mods
  365. Anybody use the fast ez efi? Or other brand??
  366. Chrome Plating
  367. Carb Selection
  368. Leakdown test procedure info needed
  369. Best Viewing place on shore to watch Boat Races at Key west.
  370. Question for Sonic owners
  371. LS Engine Plumbing
  372. 383 vs BBC in a Baja 220
  373. engine compartment temps
  374. interested in 2014 scarab 30 tournament cc - are they any good?
  375. Merc SC800 supercharger pulley/boost ratio?
  376. Ls..... Engine tear down intervals?
  377. engine dimensions
  378. Outboard motor life and issues
  379. A/C power needs
  380. Fresh (10-20 hrs.) 600 cubic inch motor hours warped all intake valves last season?
  381. speaking of HP estimates, anybody ever dyno stock 330-365-420 and what do they make?
  382. Windshield Replacement
  383. 454 build using peanut ports
  384. horsepower estimate
  385. 300 Verados with 400 hours - any major concerns
  386. A/F Ratio
  387. Merlin Intake on a 454
  388. Templet for 280 K planes
  389. Prop's on a 1990 36 no step 420 power
  390. standard deck to a tall deck
  391. 700 - 750 Hp: Boosted LS vs NA Big Block?
  392. Scarab 29' hull/speed limits?
  393. oil restrictors and pushrod restrictors?
  394. air fuel ratio with boost
  395. Most power out of a 454? PROVEN combos????
  396. Repowering 33 Outlaw with twin 454s: MPI or Carbs?
  397. 700 sci whipple upgrades
  398. Differences between K plane 280 vs 300
  399. Backwards sea pump
  400. 049 oval port heads
  401. Symptom of leaky header
  402. Neutral balance Harmonic balancers? middle of the line?
  403. 502 MAG MPI Cam swap
  404. Still Looking!
  405. Running a boat on the hose in freezing temps?
  406. superchillers
  407. ignition coils
  408. Mercruiser HP425 Gen V Big Block pistons
  409. Did GM sell a 509 block from factory
  410. The trouble with Blowers is:
  411. Stainless exhaust tip flappers ???
  412. What cams will work with stock lifters.
  413. Knock sensors for 502 mag mpi
  414. Another build dyno'd today. Whippled 509.
  415. Compression Ratio
  416. Anyone Been To The Louisville KY Boat Show??
  417. Installing new Camshaft
  418. Nordskog GPS speedometer wiring..
  419. Facebook tech.
  420. 1994 mercury racing hp 465?
  421. 454 cam
  422. The GM/Merc Rectangle port head. Discuss.
  423. morel hyd roller lifters
  424. Pushrods
  425. Who has 575sci TB?? any motor shops??
  426. Big cube n/a combo's
  427. What head should I use
  428. Leaking Trim/Trim Tab Pumps
  429. Engine Guys help (scan tool to use) on 97 454mag mpi's
  430. Diacom software ?? - where to hook up on 525EFI ?
  431. 502's with roller cams have some saltwater spots on them, Replace or run?
  432. 454/502 Mag Camshaft GM # 12551622
  433. 540 Clearances and oil pressure thread...
  434. Identify this raw water pump?
  435. cnc d heads
  436. Piston Mercruiser 496 HO
  437. Machining Fuel Rails
  438. 454 Gen 6 Engine Cam Question
  439. 600SC mechanical fuel pump ability??
  440. Looking to instal a 496 Mag HO where there was a 7.4 MPI
  441. Procharged 502 Mag Oil Cooler Recommendations
  442. Bravo One outdrive
  443. 700hp 540s
  444. 454 rebuild with blower... Pistons and clearances.
  445. Help! - what happened to champion cylinder head co, palm coast, fl?
  446. good rockers for 6000 rpm, 540CI combo??
  447. 525 whipple charged engine weight
  448. Flywheel balancing
  449. Broken xr case repair?
  450. B&M blower identification
  451. noise under valve cover
  452. Need FlyWheels...Internally Balanced
  453. Anyone running Imco powerflow manifolds on ZZ502
  454. TRS Values
  455. any proffestional tile setters looking for work
  456. Prop slip increase with speed.
  457. Oil Pan Swap / Value
  458. Carb vs Fuel Inj?
  459. CMI headers leaking....HELP
  460. anybody with 496 HO using stainless marine exhaust?
  461. Elbow restrictor gasket vs full flow gasket
  462. Would you guys use this?
  463. velvit drive pump
  464. Rubberized spray flooring?
  465. Couple quick questions - piston install
  466. Tuners or Chips?
  467. How many RPM's can the stock 500HP rotating assembly take?
  468. Who is not running 45* valve angle?
  469. In-Control Shifter
  470. Crank to crank measurement / drive centers
  471. Bumpers and ropes???
  472. What oil pan is this???? Gen6 bbc
  473. 87 scarab excel 26 convert to bravo is it worth it?
  474. powerquest 270 laser cockpit
  475. Article about valve angles
  476. New boat soon, 32' BT, 29' Scarab, 31' Scarab, or another Formula??
  477. Piston top displacement stats needed
  478. worth the trouble?? 47 fountain
  479. New carpet for a Cigarette 20
  480. Water preassure in Bravo XR?
  481. Storage of gasoline
  482. conversion i/o to o/b help.... pics... info... anything
  483. Couple quick questions
  484. Grilling go fast
  485. Good mechanic
  486. lightning headers in a 25 Daytona?
  487. Mechanic needed pompano beach area
  488. 502 mag mpi not priming oil??
  489. Turndowns and water reversion?
  490. Fuel Stabilizer or Octane Booster?
  491. Found a 525 short block! What's it worth?
  492. +.300 lifters
  493. Baja 33 Outlaw Parts
  494. Search Tempest - Trojen virus??
  495. The million dollar question
  496. msd
  497. determining oil
  498. EFI 525 rear mounted camshaft sensor???
  499. Merc 700sci hrs/lifespan before rebuild
  500. Roots supercharger intake question