View Full Version : General Q & A




  1. What size Oetiker clamps
  2. bilge pump replacement advice
  3. Blower jetting
  4. K-Plane Reinstall
  5. Battery isolator or Voltage Sensing Relay
  6. Stock Fuel/Water separator hp limit
  7. Rattle noise
  8. 502 MPI Water Pressure - Part 2
  9. Where should the oil filter be located?
  10. WHAT IS THE Correct Model Racor filter fuel gas for 496HO?
  11. Does anyone know Jim Benny???? Motor builder in Maryland
  12. Best mufflers for 509 mercruiser with blower 787hp
  13. 1974 Monza 26
  14. Hydraulic Steering Upgrade
  15. 502 extreme water temperature fluxuation under power
  16. Intake or spacer
  17. 502 MAG MPI - upgrade heads or stay stock???
  18. Another 5.7 mercruiser will not start.
  19. Holley Ultra XP carbs ~ any feedback?
  20. Through hull pickups
  21. Hardin Marine Seaward Small Block Exhaust System? Anyone running them?
  22. Mercury 500 EFI Water Pressure sending unit
  23. Help! I don't know what I'm doing but I really want a boat.
  24. Prop shaft depth
  25. Anti-reversion plate vs shear plate
  26. T Bolt Clamps
  27. 502 Mag engine noise with video.
  28. Thunder & Lightning Headers/Manifolds - Has any body ever used these?
  29. Cleaning bilge; what is this?
  30. Shore Power Reverse Polarity
  31. Looking for these flappers 3 1/2 inch
  32. Changing oil with oil coolers?
  33. 496 Mag HO fuel pump fittings
  34. Hydraulic lifter
  35. Bravo 3 propellers choice. Best guess needed.
  36. 525 efi oil temp sender location
  37. Switching from Thunderbolt V, to Thunderbolt IV, which module would be best?
  38. 500 Efi need wiring colors on alternator
  39. Anyone tried the Bblades Speed prop?
  40. Counter Rotating Engine
  41. 496ho mag help please!!!
  42. Low compression cylinder 7 and 8/ blowing smoke out of valvecovers
  43. Quench vs static Compression Question
  44. Merc 900sc jetting
  45. Transom leak ?
  46. 454 7.4 gen iv head casting numbers please
  47. Is gen 6 330hp flywheel the same as gen 6 magnum?
  48. Water hose in XR drive
  49. Exhaust Steam
  50. Sea pump recommendations
  51. just noticed this? how much of a problem?
  52. Cmi e-top repair help needed!!!
  53. New exhaust Christmas in April
  54. Fuel Filter Question on EFI
  55. Can someone please Identify this 280 K plane part!
  56. 500 EFI whipple kit, exhaust?!
  57. 500 efi thermostat housing
  58. What exhaust systems fit Sidemount Whipple on 500 EFI Intake?
  59. Running engine out of boat
  60. Lucas Speed Limter
  61. Thoughts on fuel additives
  62. What can make 500 EFI shoot oil out the dipstick tube?
  63. Engine run stands
  64. EFI Fuel system configuration
  65. closed cooling system kit 750hp
  66. Top mount control opening size
  67. Break in oil
  68. Hull mounted water pickups for 25' daytona
  69. Mercury optimax with smartcraft connecting analog gauges
  70. Pressure check valves for IC piping
  71. Boyne Thunder Street Show 2017
  72. Rod ratio vs reversion
  73. Oil pressure or oil temp gauge?
  74. Newbie building a performance 454 needs experienced advise
  75. Electric pump as well as raw water pump?
  76. k plane cable question
  77. LS speed density
  78. BUP: injector help
  79. MEFI 4 adx file
  80. adding full hydraulic to a low pressure hydraulic steering system
  81. Full Hydraulic Steering vs Add on kit or maybe a (DIY Brizilan Valve?)
  82. I found a prop that has exhaust holes in it.
  83. 700 SCI idle adjustment
  84. Anyone have a set of CMI tailpipes w/o silent choice???
  85. How to read spark plugs.
  86. What is wrong
  87. Cam gurus!
  88. Oil pressure issue......
  89. 525efi Questions
  90. Quicksilver Oem Part # 47530 Hub
  91. Transport of boat estimate
  92. MEFI 4 sensor supply voltage
  93. Ok, so how fast will this old pig run? 24-7 pantera.
  94. Length of cables
  95. AC Units - installed
  96. Docking lights
  97. Oil leak at distributor.
  98. B&M250's
  99. 502 mag MPI cooling system
  100. 565s short on Rpms
  101. New 572 builds hp guesses
  102. seawater pump impellers
  103. Help help help help help!!!!!
  104. Video of motor in a Formula 303 I am (was) considering purchasing, please advise
  105. Merc 177 blower Upper Pulley
  106. Exploding Head
  107. Remflex Exhaust Gasket PN
  108. 454 Magnum MPI will not go over 3000 RPM when in gear
  109. Thermostat housings
  110. Cam Upgrade comparison....
  111. Does hail damage boat even if nothing is visible ?
  112. Carb comparison article
  113. Fuel Tank sender depth
  114. Adding another Trim Indicator
  115. Power steering , hard
  116. What length/part # is a mercruiser serpetine belt 2000 MPI 8.2 w/o PS.
  117. Flare to AN adapter
  118. fuel issues
  119. Duel Side by side gas tanks-fill?
  120. comp cams short travel hyd roller lifters
  121. Pit stop USA
  122. 575sci/ ITS School me!
  123. 496 HO belt squeak/pulley when cold
  124. stock 525 efi lifter
  125. Lifter madness
  126. ProMaxx 317 heads arrived
  127. Prop depth
  128. Distributors
  129. Trying to post pics on my classified ad but it keeps saying they are too big.
  130. Upgrading throttle body and flame arrestor
  131. J tubes
  132. Piston Rings
  133. Air Fuel Ratio Meter
  134. Welding Aluminum Exhaust Manifolds
  135. Trs drive/merctran 2
  136. 482 merc
  137. Carb linkage ratio
  138. Source or cross reference for merc 502/500 fuel pump harness end
  139. Lathem steering rams?
  140. Replacement injectors for 2000 500 EFI?
  141. hardin marine vs stainless marine question
  142. Diesel fuel system question
  143. 575SCi
  144. Bracket for Holley smart coils
  145. Ford Mercruiser
  146. Anyone have 496 Serpentine belt crossover numbers ?
  147. Gauges
  148. Oil pressure sending unit BBC
  149. cam shafts
  150. blower vs naturally aspirated engine
  151. Anyone familiar with Marine power source in Miami?
  152. Trim position issue
  153. 598 CI - what whipplecharger?
  154. Merc 900 valve Springs and lifters
  155. 500 hp efi nameplate placard
  156. Oil pressure/Oil restrictors
  157. How to jump a mercruiser connector?
  158. Prop Question
  159. Blowers and Comp ratio
  160. Needing more total timing 1997 Mecruiser 5.7
  161. Matching Powdercoat Colors
  162. Have trim switch question???
  163. Prop spin in or out?
  164. 604ci build. Ready run msd or ignition box?
  165. MerCruiser 7.4L 310HP Running Rough and throwing code 43 Continuous knock
  166. Livorsi shipping charges...
  167. Manually Degreed Cam Lobes
  168. Corretti Racing Engines
  169. cam advise for 454 mag
  170. Propeller Bag
  171. Ending Soon,Only slight vibration be quick.
  172. 525 cam installation
  173. Engine wiring harness
  174. Where can I buys these
  175. How to Detect Valve Train Instability
  176. Hp 500
  177. 496 ho electrical issue?
  178. What oil cooler should I buy for 5.7 MAG GEN +?
  179. Best Carb for Stock 350
  180. New 1100hp BBC build.
  181. Crossover question?
  182. Nose cones
  183. 454 Mag compression
  184. LS 454 in crate, how much is it worth and how do I get rid of it?
  185. 454 build
  186. Blower cams
  187. Boxes or no boxes on 388 hustler
  188. plug for 1996 35 fountain lightning
  189. 502 MPI water pressure question
  190. Oil temp locations...??
  191. Portside Gauges Register Low
  192. OMC king cobra
  193. 454 Vortec Vs. Gen 5 454
  194. Need a welder.................
  195. Powdercoating pulleys
  196. Your Ideas for 454 build for 1000-4000RPM with most torque
  197. holley terminator fuel injection
  198. In depth- LSA explained
  199. Electric water pump, yay or nay?
  200. 502 MPIs
  201. MG502 Difference
  202. 502 MPI - valve cover vent tube size.
  203. 525 efi water temp sender
  204. Down turn / Underwater Exhaust?
  205. Interresting teardown
  206. Engine power question N/A motor
  207. Coolant hose question
  208. best oil for 500efi
  209. PPI before purchasing engines?
  210. Question on 380 K planes
  211. Running Hard: RPM + Distance
  212. Can someone lookup serial number 0C352476?
  213. Dual Dominator Blower carb Accellerator pump tuning/linkage adjustment
  214. Storing/Working on boat of trailer
  215. Looking for a new Lovett 900 bildge pump
  216. Valvetrain vids
  217. Can we make a Sticky for how boats are constructed? Useful when buying used boats....
  218. Aluminum hub coupler or Steel?
  219. TB IV timing different from G5 454 to G6 502?
  220. 454 Magnum EFI experts, I have some questions regarding a pending boat purchase
  221. Mercruiser power steering pump vs. Automotive pump
  222. Shipping a BBC
  223. Need Trim pump ID from KAAMA boats PIcs inside
  224. Mechanical fuel pump
  225. flushing without Drives?
  226. Good oil thermostats??
  227. Fuel issue
  228. What size carbs for B&M 250 blowers
  229. Saltwater used engine
  230. Ditch MerCathode for Anode Protection?
  231. Carpet Backing
  232. Mercury Verado 300's
  233. The rookie
  234. Best way to mount stand up bolster seats
  235. Header feedback
  236. 525 EFI question....
  237. Looking for cam ideas 5.7 Vortec Carb
  238. K/E Spring Oilers
  239. low compression 548 dyno testing has begun!!
  240. new standard lower
  241. Big cube 454 for fun
  242. 500efi hp gains
  243. WTB Air Dock Lift
  244. Rochester Quadrajet
  245. HP500efi Cylinder Heads
  246. Rigging/plumbing things
  247. Supercharged 502 versus HP500's
  248. Edelbrock EFI fuel pumps
  249. Where to buy windshield grommets for windshields?
  250. Will the Canton 90 Degree oil filter block adapter support both filter & cooler?
  251. Timing set for gen v block with step nose cam
  252. What happened to black baja
  253. BBC blower pistons.
  254. HP 500 Rebuild expertise
  255. Where to buy "Stainless marine" exhaust gaskets, disk gasket between the manf. &pipe
  256. Which Gimbal Anode? Two Part #'s Showing.
  257. Oil pans BBC
  258. Would you be afraid of buying a boat with these motors?
  259. Oil filter head.
  260. Need slightly taller 502 valve covers...
  261. Innotech dash panels??? Still in biz???
  262. Who's got a desk top dyno?
  263. 1985 454 best heads to use?
  264. Valve Cover Options , Opinions Needed
  265. Found something inside a coolant hose
  266. Tail pipe builder Grand Rapids MI area
  267. Bbc SC deck height
  268. Dump the Carb, intake, or both?
  269. Moisture in valve cover
  270. 540 build exhaust question
  271. Stainless marine to stellings width issues?
  272. Changing gear oil in mechanical fuel pump in 525EFI...
  273. Question on intakes
  274. Carb CFM
  275. 525,600,700 header gaskets
  276. 496 water actuators
  277. Solid roller duration vs hyd roller duration.
  278. Spark Plugs 496HO
  279. Did they ever make a 350 Vortec engine with a fuel pump boss?
  280. Merc 700sci
  281. Refinish Bravo One in Detroit
  282. another cam thread
  283. P5 Hydromotive Props on Formula 382 with 500 EFI
  284. Replacement oil filter/cooler lines/USCG approval?
  285. Adjustable guide plates
  286. Is anyone running an in the tank fuel pump?
  287. Were can I get these
  288. Moisture in heads and top side of Valve cover help.
  289. Trim Tabs quesitons
  290. 496 mag HO longevity
  291. extension box on this typ of hull and transom?
  292. cam suggestion
  293. engine oil temp sender
  294. Some videos thought I'd share .
  295. Fountain dash panel labels
  296. Drive shower option
  297. upgraded 500efi shift issues
  298. Impermeable Masking (Type) Tape?
  299. 502 engine build
  300. Extension box?
  301. Sea strainer install question
  302. Some Saturday Motor Fun
  303. 330hp 454 Flame Arrestor work on a 502HO?
  304. Afr heads with PAC 8002 spring upgrade.
  305. Gen V heads on a Gen IV block head gasket?
  306. Carb question. 850 vs 800
  307. LED Docking lights, any experience suggestion.
  308. Carb question
  309. Cam Question
  310. Need boat surveyor in NJ near Atlantic City/Little Egg
  311. Hawaiian jet boat
  312. Does Silent Choice contribute to reversion?
  313. 2.3L whipple blower Safe Limits
  314. Will carb need rejetted?
  315. Blower surge Make it stop
  316. 502 Mag Rebuild
  317. Heads Iron Vs alunimum
  318. Anyone seen gear lube leak out of water intake?
  319. Mercruiser 400 cyclone info needed
  320. Not fast enough, help!!
  321. Used merlin heads worth anything? 1 is cracked
  322. Imco sc -3
  323. Got my heads back fresh with a little clean up and a cam suprise
  324. Mercruiser 7.4 454 mpi overheating?
  325. Gen 6 firing order question
  326. Scorpion rockers
  327. Carb spacer or no ?
  328. Cam identification, please.
  329. Promaxx 320 flow numbers
  330. What Does OSU Do On Gibraltar Island @ PIB?
  331. Muscle car related vacuum advance vs piston speed
  332. Cobra Power
  333. installing imco +3 box, dropped
  334. Stamped Engine ID #'s
  335. Bad set of rings?
  336. Need a pic of p/s pump on 454/502 MPI v-belt engine w/ ProCharger
  337. idle adjustment 575 sci
  338. Injector cleaner
  339. 525 Repair Costs??
  340. Need some advice,procharger or 177blower
  341. 502 MPI aftermarket exhaust manifold
  342. Magic VooDoo 39 - any information appreciated!!!
  343. Can someone tell me year this engine is? Serial Number is
  344. engine question, good base or not
  345. Hub kit
  346. Roller rocker debate
  347. Bravo XR Trim Insert Adjuster Positioning
  348. Gen VI 489 +20 build
  349. Need Hydro Hoyst, Air Dock for 38' boat
  350. 604ci Nortech motors
  351. Deleting cooling hose merc BBC
  352. Need Crand HI-6M instructions
  353. Impeller and hose trouble with Hardin pump
  354. 496 crank kit, quality & fair priced kit for home builders. Help
  355. transom straps
  356. 1996 formula 27 sr1 graphics
  357. Hull issues
  358. Bandit motors
  359. Help identifying engines
  360. Manifold Longevity
  361. hp 500 carb question
  362. Oil Pressure
  363. anyone know this guy on here
  364. SSM Exhaust
  365. Hynautic Steering Question (Not smooth when wheel turned)
  366. Transom Plates
  367. Arneson Drive traits
  368. 1981 Scarab S Type 330 TRS. Outdrives can easily move either direction not running.
  369. Premature main engine bearing failure mystery
  370. Lobe separation
  371. AFR 300 magnum prices
  372. Needing help with h i n #s help help
  373. Teague 825 EFI Vs Merc 525 Supercherged Stage 1 Whipple
  374. Whipplecharged 540 maintenance
  375. blower height above crankshaft
  376. Professional Motor rebuild question...
  377. Converting to closed cooling
  378. Oil pressure sending unit mounting orientation
  379. Question on bravo gimble
  380. distributor gears.
  381. Converting EMI Thunder wet passage riser gasket joint to dry.
  382. Magic 28ft Deck Boat 525 Whipple Upgrade
  383. Pulling 330 TRS Engines tips and tricks been awhile 81 scarab S Type
  384. Hey Full Force Tim
  385. Daytona
  386. Supercharged 540 Camshaft
  387. Overheating 350 in 1977 scarab 300
  388. No wake zone low speed miss
  389. Manual oil temp control??
  390. Gen v 454 merc mag efi cracked block, replace block or entire engine??
  391. Help - Need parts for a 7.4L/454ci GM Delco Voyager EST Distributor
  392. When should heads be rebuilt/serviced with closed cooling ???
  393. Please help! 89 Johnson 90hp
  394. Who wants to play
  395. rocker studs bb gen 6
  396. Sonny Leonard Engines
  397. Battery boxes
  398. 525 intake manifold vs 502 Mag intake manifold
  399. Manifold question
  400. Cam question (Whipple 500efi)
  401. Solid roller lifters?
  402. DO cool fuel lines go bad? Got a kink in one of mine.
  403. Drive and Tab cable length for 81 Scarab s type.
  404. slop in throttles 81 Binnacle mount single lever twin throttle shifters
  405. Better option for Fuel Filter/Water Seperator?
  406. Stem Pocket Lines on 502 MPI Intake
  407. 6.2 mercruiser valve springs?
  408. Machine and weld exhaust
  409. Any 28' Powerplay or 29' Phantom experts??
  410. Silicone hose for exhaust?
  411. Compression ratio
  412. Hydraulic vs hydraulic roller.
  413. is there a gas grill website like oso ?
  414. SBC cooling question?
  415. 496 MAG ECM on a 496 MAG HO??
  416. Bravo 1 496 Mag Exhaust Riser Question
  417. Solid roller adjustments or check intervals?
  418. Hp3 GM racing 2005 525 motor
  419. Pro comp bbc intake min CSA vs 454r min CSA and minimum to maximum differences
  420. Valve cover differences
  421. best vinyl conditioner
  422. Bravo Drive oil cooler-Drew Marine Cool Swirl
  423. Thumping idle
  424. Swim platform for a Switzer 24SS
  425. 525sc Rebuild
  426. roll off work on...
  427. 525 Fei Crankshaft
  428. Ignition
  429. how much power can stainless marine take
  430. Where can I get a small piece of Corinthian riviera red carpet
  431. Rebuilt HP 500 carb motors
  432. Anyone know these shifters?
  433. Mercruiser 496 Fuel Pressure Regulator-2004 Cool Fuel
  434. Anybody had your fuel pressure guage pegged?
  435. Scorpion Rockers... good, bad?? ugly? long life??
  436. tranny cooler plate....how hard?
  437. Aluminum head valve seat material??
  438. Mercruiser cyclone 400 manual
  439. Dana marine exhuast
  440. Replacing cylinder heads on a 500efi?
  441. Tips for Pressure Testing Headers
  442. -12 bungs
  443. 28 daytona eliminator and procharger fitment
  444. Dart block oil temp
  445. Stainless marine exhaust Q
  446. Alpha Cutout Switch NOT Working
  447. NA pistons
  448. Low speed cavaition, what would it feel like ?
  449. Bravo III prop nut
  450. What's the difference between 35-16595Q and 35-16595 and WIX 51515R
  451. Why don't boats have multi-speed transmissions?
  452. Replacing valve body on steering arms at transom anyone done this job tips?
  453. Verado 350 rigging manual.
  454. Mayfair extension box
  455. Daytona Ignition data logging. Engine tuning.
  456. Hard start 540 whipplecharged
  457. Quick question
  458. Mercury 520 / 540 / 565 opinions
  459. milkshake on dipstick... what now?
  460. Too much Bow Lift.
  461. Do all Merc Racing oil filters have ADBV?
  462. Internal tie bar???
  463. Vinyl Wrap?
  464. Winterizing?
  465. Getting reversion and need some advise
  466. Corvette boat conversion...any info
  467. 3.0 L 250hp EFI Mercury outboard
  468. Are Sea Strainers Necessary In My Situation
  469. Freevalve Update - Camless Engine
  470. Sniper intake results?
  471. Oil level question
  472. Cam Specs
  473. teague pop up add
  474. idler pulley
  475. merc gear lube
  476. Hardin SS Exhaust Flappers......Alternative?
  477. Hydraulic Steering help.
  478. 500efi Saga Continues
  479. Timing question (setting initial/total)
  480. Roots blower top pulley not lined up with crank
  481. Merlin BB heads
  482. Engine builder wants $3000 more for Merlin block?
  483. Lets play the HP guessing game
  484. MSD Control Box wiring
  485. What are the chances of getting parts back from a engine builder
  486. Ilmor Oil Filter
  487. 502 harmonic balancer
  488. Any thoughts on how easy making power is?
  489. 572's with inter cooled 14-71's
  490. Compression numbers all over map on new , not yet broken in kongblock
  491. Marine Bluetooth 4.0 receiver
  492. 598 Engine Advise
  493. Valve springs
  494. Cylinder Head Volume: mercury 525 efi
  495. twin outboard V setup
  496. Is an air gap manifold needed?
  497. New 540 Combo
  498. Engine swap
  499. Anything to prevent where the outdrive "rubs" the gimbal ring
  500. Potential soft floor issue?