View Full Version : General Q & A




  1. 500 Efi Drain plug locations
  2. drive yoke
  3. Crack in 454 Alpha, your thoughts please
  4. Exhaust Dyno Charts
  5. Making Power with engine temp?
  6. Exhaust manifold Merc BBC stainless bolts from ARP
  7. OMC to Mercruiser swap question...
  8. computer reprogram 454
  9. mercruiser Denso Harness info needed
  10. Water circulation issues
  11. Refresh on HP500, which gaskets and what oil pump?
  12. camshaft id
  13. HP500 Heads and goofy rocker...???
  14. 500 EFI alignment
  15. 42'sonic trailer
  16. Sony Subwoofer Installation
  17. 454 to 496 Dart p-1s what cam?
  18. bbc 1.7 rocker arms
  19. intakes?
  20. 225 Merc Opti max question
  21. Engine not level?
  22. K Planes on Formula 242
  23. Eickert Tail Extention
  24. 502 MAG compaired to the 454 mag
  25. BBC alternator brackets
  26. No swim ladder, OK to step up on K-planes?
  27. Blue Motors
  28. Mercruiser Stainless Risers
  29. need help with a wiring schematic
  30. dry exhaust questions
  31. rpm airgap
  32. Raw Water Pumps
  33. bb chevy tapered exhaust manifold spacer
  34. Bravo shift cable bellow
  35. SBC with AFR 180cc
  36. Serp. belt conversions really worth it?
  37. Fuel Lines Fittings
  38. Will stock Merc/GM windage tray clear stroker crank?
  39. Polished Stainless
  40. MSD Ignition
  41. Help - looking for water 525sc water pump part
  42. Gimbal Housing?
  43. Braided Line / Fuel Permeation
  44. Jetting my 250 B&M and 1050 Carb...
  45. 502 mpi procharger fuel system questions
  46. Indmar Aluminum exhaust manifolds and risers for 454
  47. Recommended 496 pistons and rods?
  48. SBC Carburetor Upgrade
  49. Help identifying these parts!?
  50. Marine Machine
  51. no spark (msd ign)
  52. bowtie block
  53. Calling Oil Expert
  54. hypereutectic pistons
  55. what thermostat
  56. Pulleys for 454 mags?
  57. Want to put my boat in a slip..... How to keep green buildup off it?
  58. Props on #6 Drives
  59. Best Oil for Merc 700's
  60. whats a good flat tappet cam for a Gen IV 454 MAG?
  61. Raw Water Pump Mercruiser vs. Sierra
  62. Will this prop fit a Bravo 1 drive?
  63. Gas stains on the side of my boat ?
  64. Rebuilding Gen V / VI BBC book finally reissued
  65. bezel
  66. Formula 242 vs 252
  67. AquaCraft V24 Gas Vee conversion
  68. Leak down test, what are good numbers?
  69. Clearancing rockers for valve covers
  70. boarding ladder who makes it
  71. Switching Exhaust Tips
  72. Trim guage
  73. What fuel:oil ratio after removing oil injection?
  74. Pressure testing and repair of headers
  75. Raised x
  76. Gen VI BBC Merc 454 MPI questions
  77. Big M Dart block..is it ok for marine use??
  78. aluminum swim platform
  79. Amsoil SVG Sever Lube Water Tolerance?
  80. Need to know correct head gasket to run Mk IV head on Gen VI 454, please
  81. Best Closed loop kits for 502mpi motors?
  82. I won't know unless I ask...valve springs on 088 vs hp500 head
  83. What fuel pump for 1400 hp
  84. Need advice on what GPS to get
  85. warlock running video.
  86. Mefi Tuning Software
  87. Best Prices for OEM manifolds
  88. hynautic steering question
  89. props in or out 40 fountain non step
  90. 525SC Carb jetting
  91. keith eickert valve covers will they fit ???
  92. where is a good place to sell 502mag motors
  93. External steering rams?
  94. Smartcraft and Garmin GPS
  95. New Guy old question: What flat tappet cam in a GEn5 MPI?
  96. fuel pumps
  97. water temp and tach problem????
  98. Good cam upgrade on my 502
  99. gaffrig gauges
  100. Classic 18 or U-19, which should I buy?
  101. my winter project dyno sheet
  102. dock / mooring lines
  103. McLeod Bolster Switches - Where to buy?
  104. Cam size with stock rockers
  105. Rebuilding 1982 Wellcraft nova II
  106. need mufflers
  107. Pro Charger cog belts
  108. Who to have re-powdercoat a swim platform??
  109. Stereo headunits, preout turn off/on option
  110. steering issues
  111. Warlock exhaust finished!
  112. A/N Fitting
  113. What octane for stock 7.4 MPI
  114. Sea water pump conversion
  115. Oil coolers
  116. Oil Filter Questions
  117. Pretech 33c control cables
  118. Solid Motor Mount Setup?
  119. Need help with throttle cable linkage on new carb
  120. unknown source of shake
  121. exhaust temperature in water jacketed headers
  122. Best 500 efi air cleaner?
  123. Bravo Bellows
  124. Buying a 22' boat, Survey? Leak down? What should be done?
  125. Ext hydraulic steering on 38 fever
  126. What fuel pump to use
  127. B&M 250 thermostat housing
  128. Sea Water Pump KIT
  129. Installing GPS/Depth Finder
  130. Cabin fans and lights?
  131. E-Top Plumbing
  132. Help??
  133. XR Drive Stickers
  134. Bearing clearance spec question...
  135. Explain This
  136. Leather Dresses
  137. Stock spring replacement for 502MPI
  138. Where is the 90amp fuse on Mercruiser
  139. Best prop for a Bravo 1 drive.
  140. Where to install water pressure sender
  141. Where to install EP-60R Fuel Senders?
  142. Merc Y-Pipes old vs new style
  143. Which of these two gauges would you install if room is limited?
  144. Pressure Test Headers
  145. steering
  146. need some help
  147. Exhaust for Whippled 540
  148. Lighted Bev Holders ?
  149. Removing Apoxied Hatch Latches
  150. weiand 177 for bbc question
  151. 200 rpm
  152. Advice Needed - Converting 3 to 2 motors
  153. Deck height
  154. switchable exhaust upgrade?
  155. What drive is this?
  156. your thoughts on these heads!
  157. Oil filter housings
  158. Sea Water Pumps
  159. 454/502 MPI MAG injector orings
  160. cam help
  161. Flagship 572 Marine details & prices?
  162. Seals for dry throught transom exhaust
  163. Older 5.7 HI-Perf EFI Horsepower
  164. switchable exaust
  165. 32 dominator port engine
  166. 350 upgrade question
  167. Cylinder bore job
  168. Cryo-Treatment
  169. Cmi Sport Tubes Or Gen X
  170. engine rotation 502mag single motor???
  171. Another Blower motor combo question
  172. 500 EFI lifters?
  173. Drive shower recommendations
  174. tall deck 454
  175. Procharged 540 Build And Fuel.
  176. spark plug Q
  177. Silent Choice Solenoids? swap them???
  178. baffels
  179. 600HP LS Marine Engine
  180. 454/502 MPI MAG crossover?
  181. TRS Engine Harness bracket and wireing
  182. Carb Jetting - 350 magnums
  183. K Plane trim switch - any ideas where I can source one?
  184. K-Plane lines
  185. Possible Upgrades for a 7.4 Merc
  186. new stainless marine tips installed
  187. Mark IV oil relief
  188. hydraulic steering helm-char lynn #?
  189. Good offshore magazine
  190. Steel or aluminum
  191. My Winter Project Is Done
  192. What is this??
  193. 2000 thunderbolt timing module wiring???
  194. Gen VI oil filter relief valves
  195. Helm ???
  196. graffig gauge
  197. A/F ratio and 10% Ethanol
  198. merc.,it's free again program
  199. Outdrive wont stay up
  200. shore power
  201. Gorilla Hose by Goodyear
  202. bolts
  203. Cleaning Carbon deposits from Valves?
  204. Huber fluid levl?
  205. actuator covers...
  206. Who's running stainless marine manifolds w/standard risers
  207. 454 Mag
  208. Sea pump assembly lube?
  209. Stellings VS CMI
  210. Thank You Mercury Racing
  211. Removing oil cooler lines from cooler
  212. 525 headers
  213. Compression of 525 EFI's
  214. A/F ratio
  215. Camshaft Dimension (length)
  216. Balance and blueprint worth it?
  217. blocking off water pickup for speed gain
  218. 454 questions
  219. 502 MPI upgrade
  220. Should I Get my 502 Supercharged?
  221. Should I Get y 502 Supercharged?
  222. alternator upgrade 55 AMP vs ?
  223. Epirb
  224. new shifter came today and got a little more done on my upgrades
  225. Closed Cooling
  226. Decal Partnumbers Bravo Drive
  227. HP 500 cam upgrade
  228. Mercruiser 600 SCI Headers
  229. transom water pick up
  230. 500 HP Lifters
  231. Flat Panel TV mount
  232. 502 carb needed
  233. 502 mag mpi
  234. Progress report
  235. 502 EFI/MPI Injector Q
  236. Water in oil...
  237. 502efi upgrades
  238. New engine rod knock...........
  239. Throttle body gasket change?
  240. Source for HP500 EFI rings?
  241. 502 mag wont idle
  242. Dyno report question regarding Fuel-A
  243. Is it possible to shorten SS risers for switchable exhaust?
  244. 496HO swap to 525EFI
  245. hp6 filters??????
  246. Velvet drive reversal?
  247. Bringing Back a Gel Coat Finish
  248. Winterization 496 Mag HO
  249. 502 casting
  250. Bell housing drive coupler???
  251. HP 500 carb circ pump?
  252. 496 mag ho water pressure
  253. Plunbing procharger intercooler
  254. looking for suggestions
  255. HELP! Dead Battery, Can't Open Engine Hatch
  256. Props for Sunsation32
  257. Props for Sunsation32
  258. hydro hoist users
  259. Flame arrestor mesh
  260. Helm steering for #6 drives
  261. Hull bottom
  262. 496 sea pump impeller
  263. Quick question on exhaust
  264. Deck/Building software
  265. Supercharging a 496...
  266. vero Beach, Fla??
  267. 781 or merlin heads wanted
  268. 454
  269. 1986 stinger 312
  270. Any ideas on props?
  271. NEED some exhaust Help Pls (496Mag)
  272. Prop size vs pitch question
  273. SS fittings
  274. Another Oil related article
  275. building a sbc motor
  276. Bell housing measurement
  277. Good blower test results here
  278. help finding Mercruiser HP parts
  279. 525 Efi Harness
  280. cross overs /thermostats why?
  281. sea pump
  282. MSD on 502 Mag MPI
  283. 502mag cam change or hp upgrade questions
  284. 502mag cam change or hp upgrade questions
  285. holley carb guru
  286. B1 coupler?
  287. K-Plane Installation
  288. whats so bad about leaving yor boat in full throttle when u go over a big wave
  289. What is this frankenstein engine???
  290. covering wire holes
  291. cracked head??
  292. Power valve and jets
  293. External power steering cylinder failsafe
  294. 454 Mags Need help
  295. 502 MPI Cams
  296. Quick drain air fitting question
  297. Rusty water when I drained the cooling system
  298. puke tank.
  299. help choosing crossover
  300. EMI Exhaust conversion to dry
  301. Selecting a power inverter.
  302. PCM 555 Service manual and the 525efi
  303. 454 vs 7.4
  304. What is this?
  305. Borla Mufflers
  306. Will Merc 10-qt oil pan work with offshore mounts?
  307. Need opinions on mild 489 build
  308. 93-97 99-02 454mag where is 98?
  309. Whipple 454mpi mag
  310. 496 HO forged internals?
  311. Scorpion 377 flame arrestor questions
  312. Cutting your skegs off???? MPH gain vs handling loss????
  313. 3 Bladed Speedmaster Propellers
  314. motor is almost back together finally!
  315. 454 Magnum questions...
  316. Dyno- Ethanol Fuel vs. Non-Ethanol Fuel
  317. zz502 vs. merc 502mag
  318. Exhaust condensation. How much is normal?
  319. Manifolds EMI or GIL
  320. 454 procharger compression ratio
  321. E85??
  322. fuel inj. cleaning and service
  323. HIN Scandia or Venture
  324. AN fuel lines (thread seal or not)
  325. I'm stumped?
  326. HP 500 efi valve springs
  327. 454 heads
  328. audio warning buzzer
  329. Update On Oil Lubrication
  330. intake manafold
  331. RHRs PITSTOP CORNER FILLING STATION ...
  332. lowering compression on 502?
  333. AN Sealing on pipe thread adapters
  334. Carb Engine Guru's
  335. REED cam??
  336. Bravo Drives
  337. Mercury Racing flame arrestor
  338. Oil Drain plug size on 99 HP500 Carb
  339. 8.1 HO repower help
  340. Forward ballast tank........
  341. aftermarket drive oil monitor
  342. help this prop
  343. mercruiser thunderbolt distributor
  344. Stepped hull alum tank install.
  345. Eddie marine Kplane help
  346. All of a sudden 3/4 throttle and hitting rev limiter.
  347. Merc impeller part number
  348. Hooking up a bow tank
  349. z010 camshaft...what is it??????
  350. 454 mpi 385 horse how much horsepower can one make
  351. Dry Exhausts with mufflers
  352. Looking for 871 setup
  353. Gil VS HP
  354. need help on a helm/orbital valve i.d.
  355. Building some 502's
  356. sea pump ?
  357. Yellowed seats
  358. cleaning out the shed whats left
  359. baffels
  360. Dart eagle irons on 502 build questions.
  361. Engine alarm wiring, and rewiring. Help.
  362. Ziegler Helm Posts
  363. Gas tank question?
  364. Crane Golg Roller rockers...2 sets...really different
  365. Mercruiser 454 Magnum Cylinder Heads
  366. ARP rod bolt ?
  367. Battery Chargers
  368. Diesel Engines
  369. Edelbrock carb
  370. best place to buy longblocks?
  371. Battery Switch 101
  372. poss. reversion and exhaust heat problem...please help!
  373. sea strainer plumbing
  374. Mefi-4b Ecu why so hard to find?
  375. Speedometer diameter
  376. Comp Roller Cam identification help....
  377. Sea Water Pump
  378. Sea Water Pump
  379. 2000 - 454 / 7.4 Mpi
  380. Steering Cable Baja OL24
  381. Max Speed 29 Scarab
  382. B&M 250 blower
  383. Gauges
  384. 10:1 compression
  385. 96' 454 Mag
  386. Merc 540 575hp build. heads, cam, ect..
  387. Help, exhaust manifold hits valve covers?
  388. ok I want to build a gm big block
  389. SBC Oil Pan?
  390. zero effort throttles and shifters
  391. holley carb spacer
  392. Engine Oil
  393. Transmissions
  394. 525'a RPM at idle?
  395. Who has the best price on Imco steering??
  396. Cant find info on my boat. 87 Nova spyder
  397. oil cooler lines
  398. Need Part Numbers...
  399. gen 5
  400. Trim rams
  401. k-plane cylinder rebuild kits???
  402. Steering helm going out...replace or go hydraulic?
  403. 502 MPI vs 502 EFI
  404. trim on throttle question
  405. internal flappers
  406. Log Stlye Manifolds - 3 Inch
  407. belt size for 525SC
  408. 572 hp/tq
  409. Whats the reason for a remote oil filter???
  410. 604 CI Build sheet
  411. 700HP Blower vs. NA
  412. Which heads will work?
  413. 500EFI Cam Specs
  414. Dyno-Flo 572 shortblock
  415. blower carb on a blowershop 250
  416. qustion on latham/hydro steering wingplate
  417. Which risers ?
  418. Rex Marine Drive Showers...Any Good?
  419. Engine mounts???
  420. Considering K Planes on 255 Formula Liberator
  421. Broken whipple
  422. batterys
  423. donzi zr
  424. water dumps
  425. sea strainer question
  426. 525
  427. Baffled Fuel Tank
  428. BBC head question
  429. Sell or part out 1,100 HP Motors
  430. Oil thermostat, sandwich type?
  431. 454 Manifold sprung a leak
  432. trim switch
  433. 950hp Drive Suggestions??
  434. Drive suggestions!
  435. Mercury Carbon Fiber Reeds
  436. Building a 604CI Motor
  437. Newbie intro and question
  438. blower rebuild
  439. Crossovers ?
  440. Procharger Install/Owners manual
  441. Trim tab and outdrive fluid change
  442. the best flame arrestor
  443. Dart 8.1 Gen 7 Iron Heads
  444. Hard Coat Anodizing
  445. Mercruiser 165 Water Flow
  446. Has anyone ever tried solar panels to keep batteries topped off?
  447. The Mercathode Question...
  448. Brodix heads 3XX
  449. Freeze plugs
  450. Transmission support
  451. 454 winter upgrades-update
  452. fuel line size
  453. 1 battery, 2 motors
  454. Tach questions
  455. Dart Big M Block
  456. Best Blow Thru Carb Who
  457. Cmi headers
  458. Pro charger M3 on hp 500 EFI?
  459. single 454 to twin 454
  460. Blower carbs, single or dual and where from?
  461. OSO CMI Header Education
  462. IMCO Power Flow or CMI Sport Tube
  463. Which exhaust system?
  464. Wtb: Hyd steering for trs
  465. need a part number ....any help??
  466. Injectors
  467. Which props 21's or 23's
  468. 454 Gen VI, (L-29) EFI Build
  469. Classifieds Question
  470. Cheap 496 mag upgrades (375hp)
  471. Volvo DPX A lower unit
  472. need opinion on gauges-carbon or platnum?
  473. Drive Pumps on Trim Tabs
  474. BBC crossover - w or w/o T-stat???
  475. B-Max lower Bravo Upper?
  476. shaft rockers
  477. Best heads for Gen VI 540's???
  478. K-Plane Bushing Question
  479. Midnight Express
  480. 550 stroker gen question
  481. injector cleaning
  482. Single carb sideways mounting
  483. 540 piston rings, gapless or standard ?????
  484. 47ft fountain parts needed
  485. 468/496 stroker or 8.1 vortec
  486. Replacement injectors for 861260T (502MPI Whipple)
  487. Mcleod electric Bolsters
  488. Continuous Solenoid
  489. B&M Blower service and Holley carb refinish
  490. 330hp 454 Exhaust Barr/GLM vs Mercruiser
  491. Imco -2" Lower
  492. Water in fuel?
  493. Is it worth it?
  494. Holley TBI kit, vers pro charger?
  495. where to order OEM crank and rod bearings, '90 454 MAG?
  496. Motorhome Covers
  497. 525 efi intake O rings
  498. Replacment rings 502 JE pistons?
  499. B/W Velvet Drive trans leak from breather
  500. K-Plane Pump(s)