View Full Version : General Q & A




  1. 3/16 inverted flare hose fitting
  2. difference in a 496 mag base model and a 496 mag ec model
  3. Who has a vanity license plate and what does it say
  4. Any ideas on where to get parts for Captians Choice Exhaust? 525 sc
  5. how many quarts?
  6. Broken Whipple Pulley Studs
  7. Change plugs after fogging?
  8. Bosch oil filter, thread buggered up
  9. Tranny vs bravo boats
  10. Did I just blow an engine?
  11. 217 mirage fuel gauge
  12. Intake manifold gasket question 454/330
  13. Remote Oil filter
  14. mechanical fuel pump questions on bbc
  15. Fuel injector cleaning
  16. 2 power steering pumps or just 1?
  17. Beehive Valve Springs. What if any are the downfall of these springs??
  18. intake manifold torque lbs
  19. 1987 wellcraft 26 spyder
  20. 496 Vortec Cam Swap to Crane cam?
  21. Cool fuel replacement to Aeromotive
  22. Kohler 5E - Genset Help
  23. Gasket kits question...
  24. Marine grade silicone
  25. Switch / circuit breaker help??
  26. Swim Platform Material
  27. Source for stainless "T" in 1-1/2 inch
  28. Speed Loss From Speedo Pitot?
  29. Engine builder
  30. Cmi e top header question
  31. 575 sci wont start
  32. rocker arm stud diflection
  33. Where to buy hatches
  34. 496ci 585hp tuneup
  35. Mercruiser Exhaust y-pipe 44265-C tube y pipe compatable
  36. Anyone have external full hydraulic steering on sonic prowler
  37. 600sci cam good for a 502 carbureted
  38. HP500 spark plugs
  39. Fast EZ-EFI 2.0
  40. Rub rail
  41. few questions with new build
  42. Exhaust tips and turndown options, and drive shower
  43. High Mileage Vehicle(s) - What oil?
  44. Making interior side panels
  45. Helical asymmetrical oil pump
  46. Latest Generation Mopar Hemi Engines...
  47. How to prevent your arm hairs from standing on end?
  48. Fuel tanks feed unevenly need a hopefully cheap fix
  49. Engine synchronization on hp 500's
  50. Blue 500s hourly maintenance ???
  51. Fiberglass repair in NJ
  52. Anyone ever had a couple parts sand casted or are in the casting business?
  53. Drive alignment question
  54. Can anybody tell me what cam this is?
  55. SBC circulation pump impeller failure.
  56. isky hydrualic lifters in a dart big m block
  57. Another header question
  58. mercruiser impeller vs quicksilver
  59. 502 Mpi procharger to 540
  60. Accessory drive pulley question
  61. mobile delvac
  62. oil cooler thermostat line routing
  63. 496ho oil
  64. Turndowns or DM tips on 29 Fever
  65. Maybe some input from you seasoned guys regarding motor
  66. silencers
  67. What goes here?
  68. Performance Distributors
  69. Late Model Bravo One Drive Swept Back Upper
  70. Help ID 5.7LX Mercruiser Engine
  71. FlexiDock - Dry Docking
  72. Agree or Disagree?
  73. need power sttering hose fitting size or adaptor help please......
  74. pixie dust.
  75. Dilemma with harmonic damper replacement!
  76. iPad navigation app?
  77. 525 Sea/Fuel Pump
  78. Head Gasket Replacement Cost
  79. Alega Growth Prevention - Anyone try/Heard of this idea??
  80. American Offshore vs Eliminator tall deck
  81. Midwest Engine Builder
  82. Mystery 502 Cam?
  83. Twin 525s, different fuel consumption, is this normal?
  84. Mercruiser Bell housing shaft and bearing???
  85. HP500 carb
  86. Looking for Offshore Battery Box
  87. 454 pistons
  88. Help! 30' Chris Craft catamaran planning and prop questions
  89. Bravo XR / Short Sportmaster - Splash Plate ???
  90. 454 mpi doesn't idle
  91. Single Plane or Dual Plane Intake
  92. New SCARAB 31 Excel
  93. Replacing lights with LEDs in a Gaffrig Tachometer
  94. Is there a better roller lifter than gm for .....?
  95. Analog Gauge Interface for new style digital trim limit switch
  96. Convert 1050 dominator from alcohol to gas?
  97. New SCARAB 31' EXCEL!!!!!!
  98. AEM or INNOVATE
  99. Procharger intercooler froze!
  100. anyone out there every get water in oil from exhaust sucking back??
  101. Rod color
  102. Stellings headers straight thru or with tips?
  103. information on the merc 260. boat year is 1986 hhelp please!!
  104. Belt drive Cam Retard?
  105. performance upgrades available for volvo penta 8.2 gsi
  106. 496 NA or SC?
  107. Best overall propeller for a Donzi 33 ZX running on twin 502 efi Mercruisers
  108. 33 outlaw throttle/shifter/indicator cables
  109. Fuel Pump Question 548 ci with 256 blower
  110. ignition coil regular maintence
  111. K planes
  112. MSD distrbutor?
  113. Holley 6-valve Mechanical Fuel Pump - parts?
  114. Spark Timing. How it works.
  115. Tryng to get in touch with -SPYDER26- Derek
  116. Upholstery (seat) needed
  117. How to mount gas tank? Best place to buy.
  118. Compression ratio with 250 B&M
  119. ITS transom on Sunsation
  120. Thunderbolt V Ignitition
  121. 454 efi hesitates and has been running warm
  122. flywheel for hp500
  123. Fuel/water separator, can I drill and tap?
  124. Mercury 500 efi 2002. Were to buy parts?
  125. wix oil filters
  126. Bravo Swivel Shaft replacement/parts questions
  127. Autometer water temp gauge help
  128. Kohler Generator 6.5CZ
  129. Smartcraft alarm...fault 94 pitot chk hi
  130. rust spots in exhaust ports of head
  131. Here's a head scratcher! Piston rings...
  132. B&M 250 carb options
  133. Kaama 400hp Carb GM 454 on 1991 Sonic 31ss
  134. High Volume Fuel/Water Separator
  135. Hydraulic Steering?
  136. 8.1 GXi Audible alarm and rough idle
  137. Ha ! Oil Know It All's Can't Know It All Cause Oil Chemists Don't Really Understand
  138. 6.1l crankshaft
  139. Carb opinions 540's 700 hp...
  140. 700SCI Fuel Pressure
  141. Raylar 511cid Stroker Kit for the 496?
  142. What Thought Crosses Your Mind ?
  143. Accessory brackets
  144. 92oct. VS. 90oct. non ethanol?
  145. 2004 288 Sunsation 280 Trim Tabs
  146. What to use to glue the cockpit sole down?
  147. 575 sci Idle Air Control
  148. o ring distrbutor
  149. Gafrig VS livorsi sending unit
  150. private sellers opinion on buyer wanting survey
  151. 22 razor
  152. Kiekhaefer Control Cables
  153. Engine Temperture ?
  154. Mercury Racing 600SCI with Whipple Stage II
  155. 454 fuel leakdown, add Holley red or new carb?
  156. 420hp 454 questions
  157. Ranting.... King Race Bearings
  158. Run Dry Impleller Thought's???
  159. Help Merc 700 Header Bolt Trouble
  160. hydraulic steering problem
  161. How do you remove top hinge pin ssm #6 ?
  162. engine swap alpha gen question
  163. ONCE Again trying to find some Imron paint
  164. What would cause 3 intake valves to leak on a diesel?
  165. Putting in a hp500 with harness
  166. 496 Mag HO water circulation problem
  167. 300 verados choking out
  168. Oil filter...
  169. Identifying a cam, help please
  170. Any suggestions !!!
  171. Power vs reliability
  172. HP increase
  173. Attaching LEDs to trim tabs
  174. Big Chief
  175. cylinder head question
  176. Header gaskets
  177. NEED SWIM PLATFORM FOR 88 Forumula 272
  178. 350 mag mpi no spark
  179. Assault heads
  180. Vacum Pumps for crankcase
  181. Windscreens
  182. Optimal Squish
  183. 34' Super Hawaii info? "Hawaii five Owe" in classifieds?
  184. Which blower to upgrade to?
  185. Intake Manifold Gaskets
  186. Camshaft sprocket question
  187. What's the difference between 088 and 2934 heads?
  188. HP500 oil thermostat oil bypass valve?
  189. HP500 carb thermostat aassymbly question
  190. What's wrong with AFR's exhaust port?
  191. Water / Meth. Injection
  192. Bore Notching
  193. What's you're opinion... stroke vs. bore
  194. Fountain Seats Covered
  195. 525 El fuel pump relay?
  196. merc high altitude pulley?
  197. Looking for information on an odd boat predator powerboats
  198. BBC Rocker Arms
  199. DiMarco engine.
  200. Identify these steering rams
  201. forged stock crank; mains .020 rods .030... worth buying or cut too deep?
  202. Ring end gaps
  203. Bypass and blow off valves
  204. Pro filer 375cc cnc heads
  205. 454 HP425 Chevy pistons - what would you recommend?
  206. Fuel Pump
  207. Custom full depth boat covers
  208. Bad Transom
  209. Hp drive couplers questions
  210. marine jobs?
  211. No Wood?
  212. Livorsi guages
  213. 525 sc fuel pump
  214. marine sealant (clear)
  215. 700's whipple #3 upgrade specs ?
  216. Fuel Pressure Boost Combo Gauges
  217. Odds and ends for a Gen IV refresh
  218. Garage door issue...
  219. Procharger intercooler corrosion
  220. Oil thermostats
  221. cheap header
  222. 454 first build. Suggestions
  223. Merctrans question
  224. Y pipe on blower motors
  225. Aftermarket heads do they fit all generation bbc
  226. B&M 250 refresh
  227. What is the right carb
  228. Aluminum Engine Hatch Hinges
  229. Engine Cradles For LS Motors and 426 Hemi
  230. flywheel, from bravo to a transmision
  231. cooling water questions
  232. 350 mag mpi, WOT rpm?
  233. To shim or not to shim valve springs
  234. Seebold swim platform?
  235. Formula 242 rpms and props and such
  236. Bearings - Coated or Not?
  237. Thunderbolt or MSD
  238. Bravo flywheel housing 8 plate oil cooler mounting
  239. Cam Identification Question
  240. hp 500 horse power
  241. Crossover and Thermostat housing for use with Procharger
  242. How much does weight matter?
  243. Anodes for trim & steering rams - Bravo XR / ITS ??
  244. Cmi 496HO header mods
  245. Anybody use the fast ez efi? Or other brand??
  246. Chrome Plating
  247. Carb Selection
  248. Leakdown test procedure info needed
  249. Best Viewing place on shore to watch Boat Races at Key west.
  250. Question for Sonic owners
  251. LS Engine Plumbing
  252. 383 vs BBC in a Baja 220
  253. engine compartment temps
  254. interested in 2014 scarab 30 tournament cc - are they any good?
  255. Merc SC800 supercharger pulley/boost ratio?
  256. Ls..... Engine tear down intervals?
  257. engine dimensions
  258. Outboard motor life and issues
  259. A/C power needs
  260. Fresh (10-20 hrs.) 600 cubic inch motor hours warped all intake valves last season?
  261. speaking of HP estimates, anybody ever dyno stock 330-365-420 and what do they make?
  262. Windshield Replacement
  263. 454 build using peanut ports
  264. horsepower estimate
  265. 300 Verados with 400 hours - any major concerns
  266. Compression Ratio Confusion
  267. A/F Ratio
  268. Merlin Intake on a 454
  269. Templet for 280 K planes
  270. Prop's on a 1990 36 no step 420 power
  271. standard deck to a tall deck
  272. 700 - 750 Hp: Boosted LS vs NA Big Block?
  273. Scarab 29' hull/speed limits?
  274. oil restrictors and pushrod restrictors?
  275. air fuel ratio with boost
  276. Most power out of a 454? PROVEN combos????
  277. Repowering 33 Outlaw with twin 454s: MPI or Carbs?
  278. 700 sci whipple upgrades
  279. Differences between K plane 280 vs 300
  280. Backwards sea pump
  281. 049 oval port heads
  282. Symptom of leaky header
  283. Neutral balance Harmonic balancers? middle of the line?
  284. 502 MAG MPI Cam swap
  285. Still Looking!
  286. Running a boat on the hose in freezing temps?
  287. superchillers
  288. ignition coils
  289. Mercruiser HP425 Gen V Big Block pistons
  290. Did GM sell a 509 block from factory
  291. The trouble with Blowers is:
  292. Stainless exhaust tip flappers ???
  293. What cams will work with stock lifters.
  294. Knock sensors for 502 mag mpi
  295. Another build dyno'd today. Whippled 509.
  296. Compression Ratio
  297. Anyone Been To The Louisville KY Boat Show??
  298. Installing new Camshaft
  299. Nordskog GPS speedometer wiring..
  300. Facebook tech.
  301. 1994 mercury racing hp 465?
  302. 454 cam
  303. The GM/Merc Rectangle port head. Discuss.
  304. morel hyd roller lifters
  305. Pushrods
  306. Who has 575sci TB?? any motor shops??
  307. Big cube n/a combo's
  308. What head should I use
  309. Leaking Trim/Trim Tab Pumps
  310. Engine Guys help (scan tool to use) on 97 454mag mpi's
  311. Diacom software ?? - where to hook up on 525EFI ?
  312. 502's with roller cams have some saltwater spots on them, Replace or run?
  313. 454/502 Mag Camshaft GM # 12551622
  314. 540 Clearances and oil pressure thread...
  315. Identify this raw water pump?
  316. cnc d heads
  317. Piston Mercruiser 496 HO
  318. Machining Fuel Rails
  319. 454 Gen 6 Engine Cam Question
  320. 600SC mechanical fuel pump ability??
  321. Looking to instal a 496 Mag HO where there was a 7.4 MPI
  322. Procharged 502 Mag Oil Cooler Recommendations
  323. Bravo One outdrive
  324. 700hp 540s
  325. 454 rebuild with blower... Pistons and clearances.
  326. Help! - what happened to champion cylinder head co, palm coast, fl?
  327. good rockers for 6000 rpm, 540CI combo??
  328. 525 whipple charged engine weight
  329. Flywheel balancing
  330. Broken xr case repair?
  331. B&M blower identification
  332. noise under valve cover
  333. Need FlyWheels...Internally Balanced
  334. Anyone running Imco powerflow manifolds on ZZ502
  335. TRS Values
  336. any proffestional tile setters looking for work
  337. Prop slip increase with speed.
  338. Oil Pan Swap / Value
  339. Carb vs Fuel Inj?
  340. CMI headers leaking....HELP
  341. anybody with 496 HO using stainless marine exhaust?
  342. Elbow restrictor gasket vs full flow gasket
  343. Would you guys use this?
  344. velvit drive pump
  345. Rubberized spray flooring?
  346. Couple quick questions - piston install
  347. Tuners or Chips?
  348. How many RPM's can the stock 500HP rotating assembly take?
  349. Who is not running 45* valve angle?
  350. In-Control Shifter
  351. Crank to crank measurement / drive centers
  352. Bumpers and ropes???
  353. What oil pan is this???? Gen6 bbc
  354. 87 scarab excel 26 convert to bravo is it worth it?
  355. powerquest 270 laser cockpit
  356. Article about valve angles
  357. New boat soon, 32' BT, 29' Scarab, 31' Scarab, or another Formula??
  358. Piston top displacement stats needed
  359. worth the trouble?? 47 fountain
  360. New carpet for a Cigarette 20
  361. Water preassure in Bravo XR?
  362. Storage of gasoline
  363. conversion i/o to o/b help.... pics... info... anything
  364. Couple quick questions
  365. Grilling go fast
  366. Good mechanic
  367. lightning headers in a 25 Daytona?
  368. Mechanic needed pompano beach area
  369. 502 mag mpi not priming oil??
  370. Turndowns and water reversion?
  371. Fuel Stabilizer or Octane Booster?
  372. Found a 525 short block! What's it worth?
  373. +.300 lifters
  374. Baja 33 Outlaw Parts
  375. Search Tempest - Trojen virus??
  376. The million dollar question
  377. msd
  378. determining oil
  379. EFI 525 rear mounted camshaft sensor???
  380. Merc 700sci hrs/lifespan before rebuild
  381. Roots supercharger intake question
  382. Trouble free 525efi - do they exist?
  383. Different size headers
  384. Blower Application - Fuel Pressure Reg. & Return Valve
  385. 502 Ring Recommendation Please
  386. Good Bad opinion Formula 292 or 312
  387. original motors in a 91 sutphen
  388. Leaking Hatch Rams
  389. Mesa Balancing
  390. HTM oil pressure gauge
  391. Regular or Swept back
  392. Budget 454 Build
  393. 420hp 454
  394. benefits of distributor-less ignition
  395. 454 Repower
  396. 500 efi
  397. Dropping some weight on a HP500 carb?
  398. Any one interested in a boat move New Orleans to Detroit Area
  399. Best Cam Choice - Non-roller 350 with Vortec heads
  400. Steering Wheel rotary circuit switch?
  401. Carb talk
  402. Carb CFM?
  403. Gil Manifold Thoughts
  404. head gasket ?
  405. Going blown have a few questions?
  406. 97 PQ 270 laser wt twin 350 mags to 383 400hp what kinda speed
  407. 350 mag rebuild to 383. oil cooler Question
  408. AN fittings and Stainless braided lines
  409. what's the best clamp on muffler/silencer
  410. Formula 242 drive height.
  411. B&M 250 vs 420 Mega Blower
  412. 2001 Sea Ray 280 SS Engine Question
  413. Low water pickup depth below bottom
  414. Have you seen this exhaust manifold before????
  415. 500HP top end in a 502 MAG
  416. Performance Boating Magazine
  417. 525EFI Valve Springs Concerns
  418. Favorite BBC Rod Thread
  419. Upgrades to Cabin Door and Hatches.
  420. Calling all mechanics
  421. Pulled one of my gimbals and the transom is in great shape! Do I still replace it?
  422. Looking to set up a back-up bullet for the chamber
  423. HP 500 Head and Cam upgrade
  424. Alternates for Bravo drives
  425. 7.4 mpi stock cam specs needed
  426. Can you keep the thermostat and circulating pump on roots type blower motors?
  427. engine adjustment front and back.
  428. Fuel system set up
  429. valve spring bearing
  430. Twin engine power steering question
  431. CMI Headers vs Stainless Marine
  432. Removing Silent Choice Exhaust ???
  433. .937 lifters?
  434. Rod bolts, main caps, and what not.
  435. Best oil filter with sandwich adapter and plugged bypass?
  436. Any suggestions on a bench buffer & polisher
  437. Borg Warner 72C transmission upgrades?
  438. Choosing Valve Covers
  439. Another Omc thread
  440. Smartcraft Alarm
  441. New Holley Ultra HP carburetor leaking fuel from throttle shafts....Ideas?
  442. Hyd. roller lifters to solid roller lifters?
  443. swapping k throttle
  444. NXT Transmission
  445. Piston to valve clearance - 454 Mag short block
  446. Fitch Fuel Catalysts
  447. Best place to order Mercury parts from
  448. Need an Anchor
  449. Corvette C-7 LT1 Engine for marine use?
  450. Silent Choice on a 525 EFI 29' Fever
  451. 731 or 741
  452. Oil pump thread
  453. De-tuning my 2001 ilmor supercat 517
  454. Missing skeg(s) and cavitation plate
  455. 502 mag torque #
  456. Is there any product that softens vinyl (interior)? What is the best cleaner?
  457. Drive couplers
  458. boat length?
  459. Blown head gasket and worn wrist pin... rebuild advise?
  460. Wellcraft scarab cv 7.4 v8 engine.
  461. Pressure checking manifold,headers
  462. Flat vs Roller, Blown 454
  463. Can you make a 502 mpi flow more air?
  464. 525 Header/Tailpipe issue
  465. 1" or 2" carb spacer
  466. Dyno proven 675-700 HP 540CI recipes?
  467. Talk to me about closed loop cooling...any reason not to?
  468. Need Help on Heads on Gen 5 454's
  469. Need Help on Heads on Gen 5 454's
  470. Upgrades to stock 350 sbc
  471. Hawk 502 specs
  472. Bearing clearances, oil weight, and more...
  473. Intake Manifold
  474. Fuel Pump and Filter mounting
  475. Hydraulic vs Electric trim tabs
  476. EFI intake
  477. GoPro Cam Choice. . . .
  478. Carb to EFI
  479. Time to rebuild the 502...
  480. Oil restrictor size hp500
  481. 1976 stinger jet boat
  482. Want more hp out if my 502?
  483. How do i get the air out of my K-280's trim tabs?
  484. Has anyone used the new merc digital trim indicators?
  485. Fountain bilge light - bulb ID
  486. How is compression ratio figured?
  487. Who's going to the PRI show next month
  488. IMCO fuel valve instructions please
  489. procharged 502 fuel system
  490. 540CI builds, MAX RPM?
  491. Bravo or Bravo x3
  492. Midrange and low RPM grunt. Discuss please.
  493. 2011 Sea Ray 240 captain seat cylinder adjustment
  494. HELP i have a gremlin onboard
  495. SB Exhaust manifolds
  496. 8' beam into 7'9" garage door
  497. Antifreeze for Winterize Mercury 700's?
  498. Cam Questions - Little Help/Direction needed
  499. single plane intake vs. dual plane
  500. Blue engine maint?