View Full Version : General Q & A




  1. Boat with shorties question
  2. Who has had issues with afr heads??
  3. Running two different styles of pickups on Bravo drives
  4. Fast ez-efi, holley terminator ?????
  5. Cobalt 342 motor troubles
  6. 525 EFI alarm 2800rpms
  7. How do I set timing with no marks on crank?
  8. 525 efi power loss
  9. Setting X dimension
  10. 525 EFI Too Much Water Pressure
  11. 7.4 lx efi falls on its face and hesitates
  12. Windshield Wiper wrist bayonet connector?
  13. 4 blade prop question
  14. 502 mag mpi?
  15. chicken or the egg, ECm or guage
  16. One for the gear heads.... or maybe a stupid question...
  17. Timing a delco voyager distributor
  18. adjusting valves with intake manifold installed?
  19. Both trim tab switches and drive trim switches not working
  20. Motor does not run right at low RPM
  21. Rudder Spacing From the Hull ??
  22. Flushing with thermostats (with holes drilled)
  23. K Plane hydraulic fitting available lengths? Part numbers? suppliers?
  24. 96' 502 mpi, low fuel pressure
  25. Stupid mistake - have I done any damage
  26. Testing an ignition module
  27. looking for drive shaft housing & bearings
  28. Water pressure question, Before I put it back together?
  29. Rochester question
  30. 525 EFI refresh lifter issue!!!
  31. Carburetor to EFI conversions
  32. what kind of boat is this
  33. 525 efi headers
  34. Has Anyone done high compression e85 motors on a big boat?
  35. TRS drive install
  36. 500 EFI noob help
  37. Detonation melted my piston..... but what caused the detonation?
  38. 1991 Baja steering problem
  39. What fuel pump for a 502 making 600+hp.
  40. 2003 evinrude 115hp 2atroke outboard
  41. cam info needed
  42. zero out tach
  43. What gasket surface cleaner?
  44. Cometic gasket surface RA
  45. 26 hustler vs 25 active thunder tantrum with similar power?
  46. 500efi head upgrades
  47. Merctrans linkage/brackets help (man-shift)
  48. What's a good price and will it work ?
  49. 502 burning up water pump impellors.
  50. vertical stack batteries
  51. Looking for proper Mercruiser service manual p/n's.......
  52. Closed Bow or Mid Cuddy open bow?
  53. Cleaning under trailer bunks
  54. 2 stage sea pump rebuild
  55. 496ho Impeller question
  56. Wasted Bravo 1 swivel shaft/steering pin?
  57. Dual water temp sending units on HP500??
  58. crossover on hp500
  59. upgrading to 33c cables
  60. Crossover temp problem HELP
  61. Dual Ram Power Steering Issues
  62. CMI dealer
  63. O2 Sensor in Riser
  64. Recommended fuel line sizes to support NA 575 HP
  65. y pipe diffrence
  66. Holley carb paint / powdercoat suggestions
  67. Need an answer to back pressure
  68. Blower carbs what to run ?
  69. Ok, Ok, I need a new steering wheel...
  70. Dropped a valve!!!!!!!
  71. Bravo Drive Coupler Grease Cup?
  72. Livorsi / Vessel View / Vantage View ? wanting to upgrade dash
  73. What size is a 86 cig mistress 35??
  74. Are outboards really that much cheaper to run?
  75. need help with a simple wiring issue
  76. 496 or 502??
  77. Power Shift
  78. 500 Efi fuel pressure regulator?
  79. Bouncing Tach, need more suggestions already searched! Confused!
  80. H2x vs donzi
  81. hp500 distributor fit on 500efi
  82. oil temp
  83. Lift points on a '83 Scarab 377
  84. Help with new 540 flywheel selection!
  85. 454 MPI Random Power Loss
  86. Bravo Trim ram - only one working?
  87. Fuel pump Q?
  88. What is wrong with these head gaskets
  89. aftermarket alum heads..clear 454 mag piston domes?
  90. 454 mag mpi lack of power? Idles and revs fine, no miss
  91. How often do your routinely clean your air intake(s)
  92. Speedometer pickup?
  93. Spintron
  94. velvet a73c
  95. 525 water pressure problem
  96. BBC Engine missing side caps?
  97. Morel 4603 lifter noise
  98. What widebands you guys running??
  99. What Prestolite pump for an Alpha 1 '86 outdrive and the differences between them
  100. What is this??
  101. Need help with a inject blown 572's that will not run in gear
  102. anyone have any info on Opcon/Imco whipplechargers?
  103. Carpet under seat bottom bases or not?
  104. Springs pressures and valvetrain life
  105. Nothing left to check? VP 5.7GSI wont start - good fuel pressure, good ecm, wiring
  106. Formula 330 SS re-power
  107. Blowers 454 engines and compression ratio?
  108. What cleaning solution to water in oil cooler and lines?
  109. Bravo 1 props
  110. Cmi air cylinders
  111. Smartcraft/AGI Box ?
  112. Are the mercruiser M1 camshaft still available?? I need One
  113. Very high water pressure
  114. 383 mpi , buzzer , stalling help please
  115. 525 EFI intake gasket options
  116. Best product for bedding trim tabs +transom assemblies
  117. Looking for feedback on carbed HP500s
  118. Wrinkled Looking Vinyl......what's up?
  119. getting rid of the vst tank
  120. DUI Live Wires
  121. Dominator tuning
  122. Wierd tuning issue with Whipple engine - Holley ecu
  123. Bravo XR with finned top cap torque spec
  124. SSM prop pitch
  125. ARP head bolts for 525EFI part #
  126. Valve Cover Breathers: What Works?
  127. 525EFI oil pump driver/sensor position
  128. Hydraulic Steering
  129. b&m 250 mpi blower questions on a 509
  130. mk hammer marine
  131. Flushing tubular oil cooler... yes or no??
  132. Plumbing for flushing or trailer running.
  133. Exhaust Bolts
  134. Old or new partnumbers oil pump 525 EFI ?
  135. Going through electric fuel pumps. Why?
  136. Need a good Prop Shop In Portland Oregon??
  137. 8.2L Impeller Replacement
  138. Oil pump help
  139. AFR with procharged setup
  140. What size headers
  141. 2008 mirage wo6
  142. Pop up cleats
  143. 3/16 inverted flare hose fitting
  144. difference in a 496 mag base model and a 496 mag ec model
  145. Any ideas on where to get parts for Captians Choice Exhaust? 525 sc
  146. how many quarts?
  147. Broken Whipple Pulley Studs
  148. Change plugs after fogging?
  149. Bosch oil filter, thread buggered up
  150. Tranny vs bravo boats
  151. Did I just blow an engine?
  152. 217 mirage fuel gauge
  153. Intake manifold gasket question 454/330
  154. Remote Oil filter
  155. mechanical fuel pump questions on bbc
  156. Fuel injector cleaning
  157. 2 power steering pumps or just 1?
  158. Beehive Valve Springs. What if any are the downfall of these springs??
  159. intake manifold torque lbs
  160. 1987 wellcraft 26 spyder
  161. 496 Vortec Cam Swap to Crane cam?
  162. Cool fuel replacement to Aeromotive
  163. Kohler 5E - Genset Help
  164. Gasket kits question...
  165. Marine grade silicone
  166. Switch / circuit breaker help??
  167. Swim Platform Material
  168. Source for stainless "T" in 1-1/2 inch
  169. Speed Loss From Speedo Pitot?
  170. Engine builder
  171. Cmi e top header question
  172. 575 sci wont start
  173. rocker arm stud diflection
  174. Where to buy hatches
  175. 496ci 585hp tuneup
  176. Mercruiser Exhaust y-pipe 44265-C tube y pipe compatable
  177. Anyone have external full hydraulic steering on sonic prowler
  178. 600sci cam good for a 502 carbureted
  179. HP500 spark plugs
  180. Fast EZ-EFI 2.0
  181. Rub rail
  182. few questions with new build
  183. Exhaust tips and turndown options, and drive shower
  184. High Mileage Vehicle(s) - What oil?
  185. Making interior side panels
  186. Helical asymmetrical oil pump
  187. Latest Generation Mopar Hemi Engines...
  188. How to prevent your arm hairs from standing on end?
  189. Fuel tanks feed unevenly need a hopefully cheap fix
  190. Engine synchronization on hp 500's
  191. Blue 500s hourly maintenance ???
  192. Fiberglass repair in NJ
  193. Anyone ever had a couple parts sand casted or are in the casting business?
  194. Drive alignment question
  195. Can anybody tell me what cam this is?
  196. SBC circulation pump impeller failure.
  197. isky hydrualic lifters in a dart big m block
  198. Another header question
  199. mercruiser impeller vs quicksilver
  200. 502 Mpi procharger to 540
  201. Accessory drive pulley question
  202. mobile delvac
  203. oil cooler thermostat line routing
  204. 496ho oil
  205. Turndowns or DM tips on 29 Fever
  206. Maybe some input from you seasoned guys regarding motor
  207. silencers
  208. What goes here?
  209. Performance Distributors
  210. Late Model Bravo One Drive Swept Back Upper
  211. Help ID 5.7LX Mercruiser Engine
  212. FlexiDock - Dry Docking
  213. Agree or Disagree?
  214. need power sttering hose fitting size or adaptor help please......
  215. pixie dust.
  216. Dilemma with harmonic damper replacement!
  217. iPad navigation app?
  218. 525 Sea/Fuel Pump
  219. Head Gasket Replacement Cost
  220. Alega Growth Prevention - Anyone try/Heard of this idea??
  221. American Offshore vs Eliminator tall deck
  222. Midwest Engine Builder
  223. Mystery 502 Cam?
  224. Twin 525s, different fuel consumption, is this normal?
  225. Mercruiser Bell housing shaft and bearing???
  226. HP500 carb
  227. Looking for Offshore Battery Box
  228. 454 pistons
  229. Help! 30' Chris Craft catamaran planning and prop questions
  230. Bravo XR / Short Sportmaster - Splash Plate ???
  231. 454 mpi doesn't idle
  232. Single Plane or Dual Plane Intake
  233. New SCARAB 31 Excel
  234. Replacing lights with LEDs in a Gaffrig Tachometer
  235. Is there a better roller lifter than gm for .....?
  236. Analog Gauge Interface for new style digital trim limit switch
  237. Convert 1050 dominator from alcohol to gas?
  238. New SCARAB 31' EXCEL!!!!!!
  239. AEM or INNOVATE
  240. Procharger intercooler froze!
  241. anyone out there every get water in oil from exhaust sucking back??
  242. Rod color
  243. Stellings headers straight thru or with tips?
  244. information on the merc 260. boat year is 1986 hhelp please!!
  245. Belt drive Cam Retard?
  246. performance upgrades available for volvo penta 8.2 gsi
  247. 496 NA or SC?
  248. Best overall propeller for a Donzi 33 ZX running on twin 502 efi Mercruisers
  249. 33 outlaw throttle/shifter/indicator cables
  250. Fuel Pump Question 548 ci with 256 blower
  251. ignition coil regular maintence
  252. K planes
  253. MSD distrbutor?
  254. Holley 6-valve Mechanical Fuel Pump - parts?
  255. Spark Timing. How it works.
  256. Tryng to get in touch with -SPYDER26- Derek
  257. Upholstery (seat) needed
  258. How to mount gas tank? Best place to buy.
  259. Compression ratio with 250 B&M
  260. ITS transom on Sunsation
  261. Thunderbolt V Ignitition
  262. 454 efi hesitates and has been running warm
  263. flywheel for hp500
  264. Fuel/water separator, can I drill and tap?
  265. Mercury 500 efi 2002. Were to buy parts?
  266. wix oil filters
  267. Bravo Swivel Shaft replacement/parts questions
  268. Autometer water temp gauge help
  269. Kohler Generator 6.5CZ
  270. Smartcraft alarm...fault 94 pitot chk hi
  271. rust spots in exhaust ports of head
  272. Here's a head scratcher! Piston rings...
  273. B&M 250 carb options
  274. Kaama 400hp Carb GM 454 on 1991 Sonic 31ss
  275. High Volume Fuel/Water Separator
  276. Hydraulic Steering?
  277. 8.1 GXi Audible alarm and rough idle
  278. Ha ! Oil Know It All's Can't Know It All Cause Oil Chemists Don't Really Understand
  279. 6.1l crankshaft
  280. Carb opinions 540's 700 hp...
  281. 700SCI Fuel Pressure
  282. Raylar 511cid Stroker Kit for the 496?
  283. What Thought Crosses Your Mind ?
  284. Accessory brackets
  285. 92oct. VS. 90oct. non ethanol?
  286. 2004 288 Sunsation 280 Trim Tabs
  287. What to use to glue the cockpit sole down?
  288. 575 sci Idle Air Control
  289. o ring distrbutor
  290. Gafrig VS livorsi sending unit
  291. private sellers opinion on buyer wanting survey
  292. 22 razor
  293. Kiekhaefer Control Cables
  294. Engine Temperture ?
  295. Mercury Racing 600SCI with Whipple Stage II
  296. 454 fuel leakdown, add Holley red or new carb?
  297. 420hp 454 questions
  298. Ranting.... King Race Bearings
  299. Run Dry Impleller Thought's???
  300. Help Merc 700 Header Bolt Trouble
  301. hydraulic steering problem
  302. How do you remove top hinge pin ssm #6 ?
  303. engine swap alpha gen question
  304. ONCE Again trying to find some Imron paint
  305. What would cause 3 intake valves to leak on a diesel?
  306. Putting in a hp500 with harness
  307. 496 Mag HO water circulation problem
  308. 300 verados choking out
  309. Oil filter...
  310. Identifying a cam, help please
  311. Any suggestions !!!
  312. Power vs reliability
  313. HP increase
  314. Attaching LEDs to trim tabs
  315. Big Chief
  316. cylinder head question
  317. Header gaskets
  318. NEED SWIM PLATFORM FOR 88 Forumula 272
  319. 350 mag mpi no spark
  320. Assault heads
  321. Vacum Pumps for crankcase
  322. Windscreens
  323. Optimal Squish
  324. 34' Super Hawaii info? "Hawaii five Owe" in classifieds?
  325. Which blower to upgrade to?
  326. Intake Manifold Gaskets
  327. Camshaft sprocket question
  328. What's the difference between 088 and 2934 heads?
  329. HP500 oil thermostat oil bypass valve?
  330. HP500 carb thermostat aassymbly question
  331. What's wrong with AFR's exhaust port?
  332. Water / Meth. Injection
  333. Bore Notching
  334. What's you're opinion... stroke vs. bore
  335. Fountain Seats Covered
  336. 525 El fuel pump relay?
  337. merc high altitude pulley?
  338. Looking for information on an odd boat predator powerboats
  339. BBC Rocker Arms
  340. DiMarco engine.
  341. Identify these steering rams
  342. forged stock crank; mains .020 rods .030... worth buying or cut too deep?
  343. Ring end gaps
  344. Bypass and blow off valves
  345. Pro filer 375cc cnc heads
  346. 454 HP425 Chevy pistons - what would you recommend?
  347. Fuel Pump
  348. Custom full depth boat covers
  349. Bad Transom
  350. Hp drive couplers questions
  351. marine jobs?
  352. No Wood?
  353. Livorsi guages
  354. 525 sc fuel pump
  355. marine sealant (clear)
  356. 700's whipple #3 upgrade specs ?
  357. Fuel Pressure Boost Combo Gauges
  358. Odds and ends for a Gen IV refresh
  359. Garage door issue...
  360. Procharger intercooler corrosion
  361. Oil thermostats
  362. cheap header
  363. 454 first build. Suggestions
  364. Merctrans question
  365. Y pipe on blower motors
  366. Aftermarket heads do they fit all generation bbc
  367. B&M 250 refresh
  368. What is the right carb
  369. Aluminum Engine Hatch Hinges
  370. Engine Cradles For LS Motors and 426 Hemi
  371. flywheel, from bravo to a transmision
  372. cooling water questions
  373. 350 mag mpi, WOT rpm?
  374. To shim or not to shim valve springs
  375. Seebold swim platform?
  376. Formula 242 rpms and props and such
  377. Bearings - Coated or Not?
  378. Thunderbolt or MSD
  379. Bravo flywheel housing 8 plate oil cooler mounting
  380. Cam Identification Question
  381. hp 500 horse power
  382. Crossover and Thermostat housing for use with Procharger
  383. How much does weight matter?
  384. Anodes for trim & steering rams - Bravo XR / ITS ??
  385. Cmi 496HO header mods
  386. Anybody use the fast ez efi? Or other brand??
  387. Chrome Plating
  388. Carb Selection
  389. Leakdown test procedure info needed
  390. Best Viewing place on shore to watch Boat Races at Key west.
  391. Question for Sonic owners
  392. LS Engine Plumbing
  393. 383 vs BBC in a Baja 220
  394. engine compartment temps
  395. interested in 2014 scarab 30 tournament cc - are they any good?
  396. Merc SC800 supercharger pulley/boost ratio?
  397. Ls..... Engine tear down intervals?
  398. engine dimensions
  399. Outboard motor life and issues
  400. A/C power needs
  401. Fresh (10-20 hrs.) 600 cubic inch motor hours warped all intake valves last season?
  402. speaking of HP estimates, anybody ever dyno stock 330-365-420 and what do they make?
  403. Windshield Replacement
  404. 454 build using peanut ports
  405. horsepower estimate
  406. 300 Verados with 400 hours - any major concerns
  407. Compression Ratio Confusion
  408. A/F Ratio
  409. Merlin Intake on a 454
  410. Templet for 280 K planes
  411. Prop's on a 1990 36 no step 420 power
  412. standard deck to a tall deck
  413. 700 - 750 Hp: Boosted LS vs NA Big Block?
  414. Scarab 29' hull/speed limits?
  415. oil restrictors and pushrod restrictors?
  416. air fuel ratio with boost
  417. Most power out of a 454? PROVEN combos????
  418. Repowering 33 Outlaw with twin 454s: MPI or Carbs?
  419. 700 sci whipple upgrades
  420. Differences between K plane 280 vs 300
  421. Backwards sea pump
  422. 049 oval port heads
  423. Symptom of leaky header
  424. Neutral balance Harmonic balancers? middle of the line?
  425. 502 MAG MPI Cam swap
  426. Still Looking!
  427. Running a boat on the hose in freezing temps?
  428. superchillers
  429. ignition coils
  430. Mercruiser HP425 Gen V Big Block pistons
  431. Did GM sell a 509 block from factory
  432. The trouble with Blowers is:
  433. Stainless exhaust tip flappers ???
  434. What cams will work with stock lifters.
  435. Knock sensors for 502 mag mpi
  436. Another build dyno'd today. Whippled 509.
  437. Compression Ratio
  438. Anyone Been To The Louisville KY Boat Show??
  439. Installing new Camshaft
  440. Nordskog GPS speedometer wiring..
  441. Facebook tech.
  442. 1994 mercury racing hp 465?
  443. 454 cam
  444. The GM/Merc Rectangle port head. Discuss.
  445. morel hyd roller lifters
  446. Pushrods
  447. Who has 575sci TB?? any motor shops??
  448. Big cube n/a combo's
  449. What head should I use
  450. Leaking Trim/Trim Tab Pumps
  451. Engine Guys help (scan tool to use) on 97 454mag mpi's
  452. Diacom software ?? - where to hook up on 525EFI ?
  453. 502's with roller cams have some saltwater spots on them, Replace or run?
  454. 454/502 Mag Camshaft GM # 12551622
  455. 540 Clearances and oil pressure thread...
  456. Identify this raw water pump?
  457. cnc d heads
  458. Piston Mercruiser 496 HO
  459. Machining Fuel Rails
  460. 454 Gen 6 Engine Cam Question
  461. 600SC mechanical fuel pump ability??
  462. Looking to instal a 496 Mag HO where there was a 7.4 MPI
  463. Procharged 502 Mag Oil Cooler Recommendations
  464. Bravo One outdrive
  465. 700hp 540s
  466. 454 rebuild with blower... Pistons and clearances.
  467. Help! - what happened to champion cylinder head co, palm coast, fl?
  468. good rockers for 6000 rpm, 540CI combo??
  469. 525 whipple charged engine weight
  470. Flywheel balancing
  471. Broken xr case repair?
  472. B&M blower identification
  473. noise under valve cover
  474. Need FlyWheels...Internally Balanced
  475. Anyone running Imco powerflow manifolds on ZZ502
  476. TRS Values
  477. any proffestional tile setters looking for work
  478. Prop slip increase with speed.
  479. Oil Pan Swap / Value
  480. Carb vs Fuel Inj?
  481. CMI headers leaking....HELP
  482. anybody with 496 HO using stainless marine exhaust?
  483. Elbow restrictor gasket vs full flow gasket
  484. Would you guys use this?
  485. velvit drive pump
  486. Rubberized spray flooring?
  487. Couple quick questions - piston install
  488. Tuners or Chips?
  489. How many RPM's can the stock 500HP rotating assembly take?
  490. Who is not running 45* valve angle?
  491. In-Control Shifter
  492. Crank to crank measurement / drive centers
  493. Bumpers and ropes???
  494. What oil pan is this???? Gen6 bbc
  495. 87 scarab excel 26 convert to bravo is it worth it?
  496. powerquest 270 laser cockpit
  497. Article about valve angles
  498. New boat soon, 32' BT, 29' Scarab, 31' Scarab, or another Formula??
  499. Piston top displacement stats needed
  500. worth the trouble?? 47 fountain