View Full Version : General Q & A




  1. anyone out there every get water in oil from exhaust sucking back??
  2. Stellings headers straight thru or with tips?
  3. information on the merc 260. boat year is 1986 hhelp please!!
  4. Belt drive Cam Retard?
  5. performance upgrades available for volvo penta 8.2 gsi
  6. 496 NA or SC?
  7. Best overall propeller for a Donzi 33 ZX running on twin 502 efi Mercruisers
  8. 33 outlaw throttle/shifter/indicator cables
  9. Fuel Pump Question 548 ci with 256 blower
  10. ignition coil regular maintence
  11. K planes
  12. MSD distrbutor?
  13. Holley 6-valve Mechanical Fuel Pump - parts?
  14. Spark Timing. How it works.
  15. Tryng to get in touch with -SPYDER26- Derek
  16. Upholstery (seat) needed
  17. How to mount gas tank? Best place to buy.
  18. Compression ratio with 250 B&M
  19. ITS transom on Sunsation
  20. Thunderbolt V Ignitition
  21. 454 efi hesitates and has been running warm
  22. flywheel for hp500
  23. Fuel/water separator, can I drill and tap?
  24. Mercury 500 efi 2002. Were to buy parts?
  25. wix oil filters
  26. Bravo Swivel Shaft replacement/parts questions
  27. Autometer water temp gauge help
  28. Kohler Generator 6.5CZ
  29. Smartcraft alarm...fault 94 pitot chk hi
  30. rust spots in exhaust ports of head
  31. Here's a head scratcher! Piston rings...
  32. B&M 250 carb options
  33. Kaama 400hp Carb GM 454 on 1991 Sonic 31ss
  34. High Volume Fuel/Water Separator
  35. Hydraulic Steering?
  36. 8.1 GXi Audible alarm and rough idle
  37. Ha ! Oil Know It All's Can't Know It All Cause Oil Chemists Don't Really Understand
  38. 6.1l crankshaft
  39. Carb opinions 540's 700 hp...
  40. 700SCI Fuel Pressure
  41. Raylar 511cid Stroker Kit for the 496?
  42. What Thought Crosses Your Mind ?
  43. Accessory brackets
  44. 92oct. VS. 90oct. non ethanol?
  45. 2004 288 Sunsation 280 Trim Tabs
  46. What to use to glue the cockpit sole down?
  47. 575 sci Idle Air Control
  48. o ring distrbutor
  49. Gafrig VS livorsi sending unit
  50. private sellers opinion on buyer wanting survey
  51. 22 razor
  52. Kiekhaefer Control Cables
  53. Engine Temperture ?
  54. Mercury Racing 600SCI with Whipple Stage II
  55. 454 fuel leakdown, add Holley red or new carb?
  56. 420hp 454 questions
  57. Ranting.... King Race Bearings
  58. Run Dry Impleller Thought's???
  59. Help Merc 700 Header Bolt Trouble
  60. hydraulic steering problem
  61. How do you remove top hinge pin ssm #6 ?
  62. engine swap alpha gen question
  63. ONCE Again trying to find some Imron paint
  64. What would cause 3 intake valves to leak on a diesel?
  65. Putting in a hp500 with harness
  66. 496 Mag HO water circulation problem
  67. 300 verados choking out
  68. Oil filter...
  69. Identifying a cam, help please
  70. Any suggestions !!!
  71. Power vs reliability
  72. HP increase
  73. Attaching LEDs to trim tabs
  74. Big Chief
  75. cylinder head question
  76. Header gaskets
  77. NEED SWIM PLATFORM FOR 88 Forumula 272
  78. 350 mag mpi no spark
  79. Assault heads
  80. Vacum Pumps for crankcase
  81. Windscreens
  82. Optimal Squish
  83. 34' Super Hawaii info? "Hawaii five Owe" in classifieds?
  84. Which blower to upgrade to?
  85. Intake Manifold Gaskets
  86. Camshaft sprocket question
  87. What's the difference between 088 and 2934 heads?
  88. HP500 oil thermostat oil bypass valve?
  89. HP500 carb thermostat aassymbly question
  90. What's wrong with AFR's exhaust port?
  91. Water / Meth. Injection
  92. Bore Notching
  93. What's you're opinion... stroke vs. bore
  94. Fountain Seats Covered
  95. 525 El fuel pump relay?
  96. merc high altitude pulley?
  97. Looking for information on an odd boat predator powerboats
  98. BBC Rocker Arms
  99. DiMarco engine.
  100. Identify these steering rams
  101. forged stock crank; mains .020 rods .030... worth buying or cut too deep?
  102. Ring end gaps
  103. Bypass and blow off valves
  104. Pro filer 375cc cnc heads
  105. 454 HP425 Chevy pistons - what would you recommend?
  106. Fuel Pump
  107. Custom full depth boat covers
  108. Bad Transom
  109. Hp drive couplers questions
  110. marine jobs?
  111. No Wood?
  112. Livorsi guages
  113. 525 sc fuel pump
  114. marine sealant (clear)
  115. 700's whipple #3 upgrade specs ?
  116. Fuel Pressure Boost Combo Gauges
  117. Odds and ends for a Gen IV refresh
  118. Garage door issue...
  119. Procharger intercooler corrosion
  120. Oil thermostats
  121. cheap header
  122. 454 first build. Suggestions
  123. Merctrans question
  124. Y pipe on blower motors
  125. Aftermarket heads do they fit all generation bbc
  126. B&M 250 refresh
  127. What is the right carb
  128. Aluminum Engine Hatch Hinges
  129. Engine Cradles For LS Motors and 426 Hemi
  130. flywheel, from bravo to a transmision
  131. cooling water questions
  132. 350 mag mpi, WOT rpm?
  133. To shim or not to shim valve springs
  134. Seebold swim platform?
  135. Formula 242 rpms and props and such
  136. Bearings - Coated or Not?
  137. Thunderbolt or MSD
  138. Bravo flywheel housing 8 plate oil cooler mounting
  139. Cam Identification Question
  140. hp 500 horse power
  141. Crossover and Thermostat housing for use with Procharger
  142. How much does weight matter?
  143. Anodes for trim & steering rams - Bravo XR / ITS ??
  144. Cmi 496HO header mods
  145. Anybody use the fast ez efi? Or other brand??
  146. Chrome Plating
  147. Carb Selection
  148. Leakdown test procedure info needed
  149. Best Viewing place on shore to watch Boat Races at Key west.
  150. Question for Sonic owners
  151. LS Engine Plumbing
  152. 383 vs BBC in a Baja 220
  153. engine compartment temps
  154. interested in 2014 scarab 30 tournament cc - are they any good?
  155. Merc SC800 supercharger pulley/boost ratio?
  156. Ls..... Engine tear down intervals?
  157. engine dimensions
  158. Outboard motor life and issues
  159. A/C power needs
  160. Fresh (10-20 hrs.) 600 cubic inch motor hours warped all intake valves last season?
  161. speaking of HP estimates, anybody ever dyno stock 330-365-420 and what do they make?
  162. Windshield Replacement
  163. 454 build using peanut ports
  164. horsepower estimate
  165. 300 Verados with 400 hours - any major concerns
  166. Compression Ratio Confusion
  167. A/F Ratio
  168. Merlin Intake on a 454
  169. Templet for 280 K planes
  170. Prop's on a 1990 36 no step 420 power
  171. standard deck to a tall deck
  172. 700 - 750 Hp: Boosted LS vs NA Big Block?
  173. Scarab 29' hull/speed limits?
  174. oil restrictors and pushrod restrictors?
  175. air fuel ratio with boost
  176. Most power out of a 454? PROVEN combos????
  177. Repowering 33 Outlaw with twin 454s: MPI or Carbs?
  178. 700 sci whipple upgrades
  179. Differences between K plane 280 vs 300
  180. Backwards sea pump
  181. 049 oval port heads
  182. Symptom of leaky header
  183. Neutral balance Harmonic balancers? middle of the line?
  184. 502 MAG MPI Cam swap
  185. Still Looking!
  186. Running a boat on the hose in freezing temps?
  187. superchillers
  188. ignition coils
  189. Mercruiser HP425 Gen V Big Block pistons
  190. Did GM sell a 509 block from factory
  191. The trouble with Blowers is:
  192. Stainless exhaust tip flappers ???
  193. What cams will work with stock lifters.
  194. Knock sensors for 502 mag mpi
  195. Another build dyno'd today. Whippled 509.
  196. Compression Ratio
  197. Anyone Been To The Louisville KY Boat Show??
  198. Installing new Camshaft
  199. Nordskog GPS speedometer wiring..
  200. Facebook tech.
  201. 1994 mercury racing hp 465?
  202. 454 cam
  203. The GM/Merc Rectangle port head. Discuss.
  204. morel hyd roller lifters
  205. Pushrods
  206. Who has 575sci TB?? any motor shops??
  207. Big cube n/a combo's
  208. What head should I use
  209. Leaking Trim/Trim Tab Pumps
  210. Engine Guys help (scan tool to use) on 97 454mag mpi's
  211. Diacom software ?? - where to hook up on 525EFI ?
  212. 502's with roller cams have some saltwater spots on them, Replace or run?
  213. 454/502 Mag Camshaft GM # 12551622
  214. 540 Clearances and oil pressure thread...
  215. Identify this raw water pump?
  216. cnc d heads
  217. Piston Mercruiser 496 HO
  218. Machining Fuel Rails
  219. 454 Gen 6 Engine Cam Question
  220. 600SC mechanical fuel pump ability??
  221. Looking to instal a 496 Mag HO where there was a 7.4 MPI
  222. Procharged 502 Mag Oil Cooler Recommendations
  223. Bravo One outdrive
  224. 700hp 540s
  225. 454 rebuild with blower... Pistons and clearances.
  226. Help! - what happened to champion cylinder head co, palm coast, fl?
  227. good rockers for 6000 rpm, 540CI combo??
  228. 525 whipple charged engine weight
  229. Flywheel balancing
  230. Broken xr case repair?
  231. B&M blower identification
  232. noise under valve cover
  233. Need FlyWheels...Internally Balanced
  234. Anyone running Imco powerflow manifolds on ZZ502
  235. TRS Values
  236. any proffestional tile setters looking for work
  237. Prop slip increase with speed.
  238. Oil Pan Swap / Value
  239. Carb vs Fuel Inj?
  240. CMI headers leaking....HELP
  241. anybody with 496 HO using stainless marine exhaust?
  242. Elbow restrictor gasket vs full flow gasket
  243. Would you guys use this?
  244. velvit drive pump
  245. Rubberized spray flooring?
  246. Couple quick questions - piston install
  247. Tuners or Chips?
  248. How many RPM's can the stock 500HP rotating assembly take?
  249. Who is not running 45* valve angle?
  250. In-Control Shifter
  251. Crank to crank measurement / drive centers
  252. Bumpers and ropes???
  253. What oil pan is this???? Gen6 bbc
  254. 87 scarab excel 26 convert to bravo is it worth it?
  255. powerquest 270 laser cockpit
  256. Article about valve angles
  257. New boat soon, 32' BT, 29' Scarab, 31' Scarab, or another Formula??
  258. Piston top displacement stats needed
  259. worth the trouble?? 47 fountain
  260. New carpet for a Cigarette 20
  261. Water preassure in Bravo XR?
  262. Storage of gasoline
  263. conversion i/o to o/b help.... pics... info... anything
  264. Couple quick questions
  265. Grilling go fast
  266. Good mechanic
  267. lightning headers in a 25 Daytona?
  268. Mechanic needed pompano beach area
  269. 502 mag mpi not priming oil??
  270. Turndowns and water reversion?
  271. Fuel Stabilizer or Octane Booster?
  272. Found a 525 short block! What's it worth?
  273. +.300 lifters
  274. Baja 33 Outlaw Parts
  275. Search Tempest - Trojen virus??
  276. The million dollar question
  277. msd
  278. determining oil
  279. EFI 525 rear mounted camshaft sensor???
  280. Merc 700sci hrs/lifespan before rebuild
  281. Roots supercharger intake question
  282. Trouble free 525efi - do they exist?
  283. Different size headers
  284. Blower Application - Fuel Pressure Reg. & Return Valve
  285. 502 Ring Recommendation Please
  286. Good Bad opinion Formula 292 or 312
  287. original motors in a 91 sutphen
  288. Leaking Hatch Rams
  289. Mesa Balancing
  290. HTM oil pressure gauge
  291. Regular or Swept back
  292. Budget 454 Build
  293. 420hp 454
  294. benefits of distributor-less ignition
  295. 454 Repower
  296. 500 efi
  297. Dropping some weight on a HP500 carb?
  298. Any one interested in a boat move New Orleans to Detroit Area
  299. Best Cam Choice - Non-roller 350 with Vortec heads
  300. Steering Wheel rotary circuit switch?
  301. Carb talk
  302. Carb CFM?
  303. Gil Manifold Thoughts
  304. head gasket ?
  305. Going blown have a few questions?
  306. 97 PQ 270 laser wt twin 350 mags to 383 400hp what kinda speed
  307. 350 mag rebuild to 383. oil cooler Question
  308. AN fittings and Stainless braided lines
  309. what's the best clamp on muffler/silencer
  310. Formula 242 drive height.
  311. B&M 250 vs 420 Mega Blower
  312. 2001 Sea Ray 280 SS Engine Question
  313. Low water pickup depth below bottom
  314. Have you seen this exhaust manifold before????
  315. 500HP top end in a 502 MAG
  316. Performance Boating Magazine
  317. 525EFI Valve Springs Concerns
  318. Favorite BBC Rod Thread
  319. Upgrades to Cabin Door and Hatches.
  320. Calling all mechanics
  321. Pulled one of my gimbals and the transom is in great shape! Do I still replace it?
  322. Looking to set up a back-up bullet for the chamber
  323. HP 500 Head and Cam upgrade
  324. Alternates for Bravo drives
  325. 7.4 mpi stock cam specs needed
  326. Can you keep the thermostat and circulating pump on roots type blower motors?
  327. engine adjustment front and back.
  328. Fuel system set up
  329. valve spring bearing
  330. Twin engine power steering question
  331. CMI Headers vs Stainless Marine
  332. Removing Silent Choice Exhaust ???
  333. .937 lifters?
  334. Rod bolts, main caps, and what not.
  335. Best oil filter with sandwich adapter and plugged bypass?
  336. Any suggestions on a bench buffer & polisher
  337. Borg Warner 72C transmission upgrades?
  338. Choosing Valve Covers
  339. Another Omc thread
  340. Smartcraft Alarm
  341. New Holley Ultra HP carburetor leaking fuel from throttle shafts....Ideas?
  342. Hyd. roller lifters to solid roller lifters?
  343. swapping k throttle
  344. NXT Transmission
  345. Piston to valve clearance - 454 Mag short block
  346. Fitch Fuel Catalysts
  347. Best place to order Mercury parts from
  348. Need an Anchor
  349. Corvette C-7 LT1 Engine for marine use?
  350. Silent Choice on a 525 EFI 29' Fever
  351. 731 or 741
  352. Oil pump thread
  353. De-tuning my 2001 ilmor supercat 517
  354. Missing skeg(s) and cavitation plate
  355. 502 mag torque #
  356. Is there any product that softens vinyl (interior)? What is the best cleaner?
  357. Drive couplers
  358. boat length?
  359. Blown head gasket and worn wrist pin... rebuild advise?
  360. Wellcraft scarab cv 7.4 v8 engine.
  361. Pressure checking manifold,headers
  362. Flat vs Roller, Blown 454
  363. Can you make a 502 mpi flow more air?
  364. 525 Header/Tailpipe issue
  365. 1" or 2" carb spacer
  366. Dyno proven 675-700 HP 540CI recipes?
  367. Talk to me about closed loop cooling...any reason not to?
  368. Need Help on Heads on Gen 5 454's
  369. Need Help on Heads on Gen 5 454's
  370. Upgrades to stock 350 sbc
  371. Hawk 502 specs
  372. Bearing clearances, oil weight, and more...
  373. Intake Manifold
  374. Fuel Pump and Filter mounting
  375. Hydraulic vs Electric trim tabs
  376. EFI intake
  377. GoPro Cam Choice. . . .
  378. Carb to EFI
  379. Time to rebuild the 502...
  380. Oil restrictor size hp500
  381. 1976 stinger jet boat
  382. Want more hp out if my 502?
  383. How do i get the air out of my K-280's trim tabs?
  384. Has anyone used the new merc digital trim indicators?
  385. Fountain bilge light - bulb ID
  386. How is compression ratio figured?
  387. Who's going to the PRI show next month
  388. IMCO fuel valve instructions please
  389. procharged 502 fuel system
  390. 540CI builds, MAX RPM?
  391. Bravo or Bravo x3
  392. Midrange and low RPM grunt. Discuss please.
  393. 2011 Sea Ray 240 captain seat cylinder adjustment
  394. HELP i have a gremlin onboard
  395. SB Exhaust manifolds
  396. 8' beam into 7'9" garage door
  397. Antifreeze for Winterize Mercury 700's?
  398. Cam Questions - Little Help/Direction needed
  399. single plane intake vs. dual plane
  400. Blue engine maint?
  401. Top end refresh?
  402. Enine Builders?
  403. 388 hustler that was in the classifieds
  404. Looking for some real out of the box thinking....
  405. another milkshake
  406. What size is this
  407. HP 500 valve covers....
  408. Best way to clean old fuel tanks
  409. ss rod ends?
  410. Weiand 177 or 256, which kits?
  411. Step By Step : Building An 871 Blower
  412. Baja 240 sport (24 outlaw) VS 250 (270)es
  413. Where to buy bolster tops?
  414. Fuel pump
  415. How to tell if its an HP gimble ring or not?
  416. Projected or non with blowers?
  417. Smashed Plugs on fresh re-build, any advice?
  418. Does prop slip increase or decrease with speed? Top speed less than expected.
  419. Smartcraft gauge rigging question
  420. What is this plate called and where can I get one?? SsmII
  421. Antifreeze/Magnesium question. (non boating related)
  422. 1999 vortec 454 yes or no
  423. Anyone change an Oil Thermostat in a HP500 Filter housing?
  424. Circulating Pump Size
  425. Using Marine battery in Truck?
  426. motor oils prefered on performance boats
  427. how to remove gas overflow stain side of boat?
  428. Holley fuel pump safety switch 12-810. 2 bad in one year.
  429. Engine Rebuilding
  430. header friendly sub for r44xls
  431. HELP PLEASE....Thoughts on repowering
  432. Roots Blower Sizing
  433. Engine Pre lube systems
  434. boat vapor locked after taking off fuel filter/water seperator
  435. company to handle blower DIS/REassembly and powdercoating?
  436. Gen 6 Heads on a Mk 4 Block
  437. Ebay water jacketed headers?
  438. Innovative Wideband A/F system - cable too short
  439. Revolution Marine Oil Reservoir
  440. Oil pressure safety
  441. Winter upgrades, LEDs, underwater lights, etc
  442. My quest for 60 MPH
  443. Stock power to Ilmor swap
  444. Outboard motor question
  445. Merc Racing 575 SCI running very rough/rich
  446. Kaama Question?
  447. Winterizing Question- Looking for Ideas
  448. Fuel stabablizer
  449. Fuel Filter
  450. 1988 Merc 420's
  451. Gas Ssteam Out Of Whipple Chargers
  452. Gauges Cycle/Sweep
  453. piston coatings
  454. merc twins 496HO will not exceed 2800
  455. Merlin heads
  456. Valve Springs & Rocker Arms - 525EFI's ???
  457. Exhaust Replacement ?
  458. Can we change our S/N
  459. Max safe RPM?
  460. changing throttle shifter configeration on Gaffrig
  461. What's a 502 block worth
  462. Gen 3 Cool Fuel Winterization?
  463. 496 ecm
  464. Found external leak on manifold - crack
  465. milkshake under stbd valve cover, hi water temp on the port side of the block.
  466. Looking for a Twin Disk mechanic
  467. sonic prowler 496HO PCM PROBELM??
  468. Machine shop in SouthEast Michigan
  469. Can I start the engines on the hose with the drives off?
  470. Hawk 525sc's
  471. Secondary idle screw adjustment on quick fuel 1050?
  472. Gen6 cylinder bore question max bore?
  473. 525 rebuilds with 250 hours
  474. Another bad motor
  475. Stainless marine gen 3 gaskets
  476. Power steering fluid tempature.
  477. Why do larger roots blowers use 2 carbs?
  478. Oil temp problem in my 572, need input/advice....
  479. Finally got a new tow rig! (any other 8.1 owners out there?)
  480. Need Boat Mechanic / Engine Builder in Palm Beach Area
  481. Smartcraft and gauges ?
  482. 598 build questions
  483. Profile picture
  484. Timing a custom supercharged engine
  485. gas tank
  486. Smoked 502 tonite
  487. Bbc with v6 module??
  488. Phenomenal experinece with MarineEngine.com
  489. Need engine advice N A 598 cubic inch rebuild
  490. 700 sci - over heat at high rpm only
  491. Twin Turbo Build
  492. Water Press. location
  493. Exhaust manifold differences 502 vs 525 efi
  494. Another Engine Dynoed today.
  495. WTF Did I Just Do. Considering a Formula 400 SS
  496. 33 Baja outlaw vs 32 fountain fever
  497. SBC Built, now looking for jet recommendations
  498. 502efi
  499. 525EFI Warm start problem - ??
  500. 29 fever triple digits