View Full Version : General Q & A




  1. 502 MAG MPI lacking power
  2. Transducer question
  3. Formula 302 LS Repower Questions
  4. B&m 250 efi mercruiser supercharger no power/limp mode?
  5. What sealing procedure to use for ARP head studs in water jackets?
  6. Starter solenoid
  7. Bad Lifter?
  8. livorsi gps speedo ?
  9. 496 ho sea pump
  10. Fuel pressure sensors
  11. Dry exhaust
  12. Torque spec for Gen VI oil filter adapter?
  13. Merc trim Tab Ram removal.
  14. hydraulic lines
  15. High oil temperature ?
  16. Who has red underwater LEDs and / or red LED interior lights?
  17. Water temp issue (help)
  18. Valvetrain noise in new engines
  19. How to tell what cam and lifters are in my 502
  20. starter bolt torque
  21. Cool Fuel consumption ap for Mercury engines
  22. New engine disaster need engine guru help!
  23. XR DWP vs LWP
  24. Looking for advice on 454 or 502
  25. motor knocking after tune up
  26. Remove baffles fromthru hull
  27. OK...i got shocked by my throttles today.....HELP!!
  28. Adding Silent Choice
  29. SS Bow Protector
  30. 454 mag mpi blew out spark plug and now has top end taping!!
  31. mercruiser engine alarm buzzer
  32. Need Help, Electrical mystery.
  33. Blower carbs???
  34. carb jeting question
  35. 502 Dies
  36. Octane questions
  37. Mercruiser 496 plug wires???
  38. Quick 383 build question
  39. Anybody tried to drill and tap brass inserts?
  40. TRS Anodes
  41. 2000 Formula Fastech Blows shore GFI when main boat AC breaker is flipped on - HELP!
  42. Question on Bravo lower
  43. Anyone have a pic of a merc throttle cable converted to a work on a Holley carb?
  44. Aluminum 496 manifolds - bolt hardware
  45. Best prop for carrying loads?
  46. Remote power steering reservoir pump cap for old style pump?
  47. Engine Help
  48. trying to understand what exhaust is needed and why
  49. Tach jumps all over
  50. CNY Repair Shops??
  51. We need a after market performance engine section.
  52. 0 oil pressure
  53. Water Pressure/Volume Problem.. .Help
  54. Good cleaner and protector ?
  55. DId I do something wrong?
  56. GAffrig gauge senders?
  57. looking for a 502 mag. short block or long block
  58. Bravo One Lower Unit question
  59. Best top mount starter
  60. No Power to dash or engine
  61. Boat dies when put into gear... Need help!
  62. Air /fuel ratio in super charged 540
  63. WTF is wrong that I cant post
  64. What's up with DONZIDICECT.COM??
  65. Boat engine hatch stitching coming apart
  66. 1999 502 Mag Runs at 100* Need some help...
  67. new blower motor shuts off after being run at speed
  68. Corsa Switchable opeation
  69. Volvo Dual Prop Alignment
  70. hydraulic engine hatch lift cylinder question
  71. gen VI oil filter sandwich adapter
  72. Anyone ever had a crack or weap hole in a new set of World iron heads?
  73. Water in #7? and milky oil. Need Ideas
  74. edelbrock victor jr heads leaking water
  75. Rollmaster gen 6 timing set no fit??
  76. DIACOM Marine question
  77. Name that failure!
  78. Water in merc trans ( trs drive)
  79. Trash In Fuel Filter? Areomotive Pukeing? or
  80. Valvoline Vr1 racing oil
  81. Hardin Marine Fuel Sender
  82. Beeping from boat
  83. IMCO hydraulic steering fluid?
  84. What exhaust gasket for AFR heads?
  85. Fresh 454 engine build which carb should I run?
  86. red w purple stripe or red w/black stripe
  87. 1999 Volvo Penta SBC won't start...weak spark?
  88. Swapping out my quadrajet for a holley 4160 or 4150 carb ''CARB GUYS COME ON IN''
  89. Oil temp, oil coolers, water temp and pressure advice.
  90. Blow Through Carburetors
  91. Motor back in and rear main leak !
  92. no power tomain red wire, or starter . help me please.
  93. Looking For Oil recomendation
  94. Motor Tight
  95. Rebuilding my 99 Baja 502 Mag MPI
  96. Alarm sounding, 502 MAG MPI....
  97. Where is my oil hideing?
  98. Blower Motor seems fuel starved
  99. Head gaskets
  100. Fastest Single engine V
  101. 525's Running Hot
  102. Does My Oil Filter On My 496 HO Mags Have An Anti-Drain Back Valve?
  103. fuel tank sending unit depth
  104. Transmission Cooler sizing BW 72C
  105. ARP Stainless exhaust bolts - 496 exhaust manifolds ?
  106. CMI Rep
  107. eddie marine??????
  108. Lost oil pressure and then a broken starter bolt
  109. 496 low end knock / rattle - need help
  110. Oildyne trim pump replacement motor?
  111. 575sci.... Fresh water cooling...... Anyone ?
  112. Push-On hose for fuel plumbing?
  113. power trim guage
  114. 496 HO PCM Re-Flash
  115. 26 corsa
  116. spark plug heat range selection
  117. Quicksilver mirage prop question
  118. Stainless steel Sea Pump
  119. low WOT on mercruiser 5.7 with 19p prop
  120. Issues after 502 Mag MPI swap in my 2000 Baja 272
  121. 93 502 mag power steering cooler
  122. Import a boat from Canada to the US
  123. fuel flow issues
  124. Should I change my oil?
  125. Mobil 1 V-Twin 20-50 Full Synthetic Oil
  126. Who does Vinyl Wrap ?
  127. relocating exhaust tips/header change
  128. Insurance Company Denies Claim - HELP!!
  129. Will these Corsa muffled tips create too much back pressure?
  130. New 502 block bore
  131. Blow through carb vers regular?
  132. Building my first boat engine.
  133. running boat without water for cooling? How long?
  134. 496 supercharged - oil type?
  135. oil thermostat housing and cooler priming
  136. Another Cam and reversion ? but also risers and exhaust ?
  137. Fountain K Plane Trim Solenoids
  138. Water reversion camshaft question
  139. Exhaust Valve Guide Clearance
  140. 415 hp 502 efi engine temp
  141. water jacket sealant
  142. Big block Chevy 454 Gen V cutawy drawing
  143. U-joint froze on my TRS. What part number to replace it?
  144. How to remove exhaust hose?
  145. Is it worth putting coolant hoses back to front on a 4 corner intake manifold
  146. Bravo 1 upper/lower compatibility
  147. Help with ?'s
  148. Gimbal boot ring
  149. power steering actuator and high pressure line
  150. Smartcraft System View Race Edition Help
  151. 500efi, exhaust question
  152. whipple 525 ecm flash
  153. Help with HTM
  154. drive fluid in bilge
  155. Ready to run distributors
  156. Play in Steering Wheel
  157. Switching from carb to 525's.questions?
  158. Carb box procharger
  159. Is it worth adding a PCV like on the HP500's?
  160. Will 454 risers bolt up to the 496 aluminum manifolds?
  161. wire color identification
  162. Bravo 1 gear lube capacity.
  163. Gaffrig Digital GPS speedo
  164. Carb needle material?
  165. mr gasket
  166. Is this a Bravo Drive?
  167. More Useful Information
  168. Any one know this boat?
  169. oil temp sender
  170. Dry exhaust flaps??
  171. Mr. Gasket
  172. 1988 Mark IV 454 Mag--500 rpm loss but its random
  173. Edelbrock Performer RPM Intake Manifold vs GM 6269318 marine intake
  174. Gen six 502 casting numbers
  175. do i need a 496 y pipe
  176. Where to buy neutral safety switch
  177. Lets talk mechanical fuel pumps
  178. Water pressure..draw off location?
  179. Exhaust question
  180. intake gasket
  181. where i can get this battery hold down bolt?
  182. MerCruiser 502 Mag MPI wont shut off....
  183. Help, Starter Issue
  184. idle is up at 2000 help
  185. Hydraulic Steering installation advice needed
  186. Fuel Return
  187. Stock 502 carb questions
  188. intake gasket
  189. 525 question
  190. Can anyone identify this fuel pump?
  191. External Steering
  192. Audio: Feedback through Amplifier with Trim
  193. Buzzing Electric Fule Pump
  194. 320EFI timing mode. HELP!
  195. VST tank vent. Will this work? pics
  196. port tab wont go down..
  197. To bypass or not to bypass...
  198. help with cam shaft 454
  199. Gen V Big block oil cooler help
  200. Broken 454, options?
  201. new help intake and carb setup
  202. Trim switch not working
  203. sea pump hose size
  204. gear lube
  205. Distributor not dropping down
  206. 525 efi power sterring pump
  207. Where can I get hatch mirrors
  208. Moving Fuel Filter
  209. Oil Pump shaft length?
  210. drive alignment questions
  211. Mercury Side Mount Control - Trailer Button
  212. driving a boat question
  213. drive indicator
  214. engine i.d. 454
  215. Hyd steering install help
  216. put in new motor, mounts not lining up
  217. 496HO 2003/ forged internals???
  218. Oil Press and VM Gauge
  219. Speedometer Hose Blew Off – Thought Boat Was Sinking!!!
  220. Alarm Advise - for driveway, traveling by road & anchoring - need advise
  221. Looking for TRS Bellow part numbers 60932A4 or 54406A 1
  222. Dipstick tube extend to bottom of pan? Merc 420's
  223. 502 mpi running on 4 cylinders
  224. 500efi mysterious plug..?
  225. Can this distributor & coil be used on a carbed engine?
  226. Hyd. steering question? Need some help guys.
  227. HP 500 Bulldog
  228. So how many batteries can you safely charge??
  229. what oil in a whipple
  230. Erratic Vaccuum readings
  231. HP500 Cylinder Head Bolt Torque Spec
  232. More 575sci build questions
  233. Dual cable steering on 98 25' Outlaw
  234. Engine alignment needed?
  235. distributor
  236. Strange "dotted" pattern on valve seats and faces
  237. transom / exhaust rubber seals?
  238. help needed identifying Scarab trim tabs
  239. upolstrey shop in NE Maryland or Central P
  240. 350 mpi horizon low water pressure. on port side
  241. Captain Call Wires
  242. Do you really need hard anodizing in fresh water?
  243. need External hydro direction?
  244. What are the Standard Specs for Hp500 Cylinder Heads
  245. need adjustable FPR on 496ho raylar103kit ?
  246. Mercury Racing QCV4 - difference in length between 700 and 1350?
  247. Rebuild number for dominator carb on 540 bulldog
  248. What to do with old gas?
  249. Transom Exhaust Rings??
  250. Hex or blade oil pump driveshaft???
  251. Looking for blower belt
  252. Hardin Marine 2 stage stainless seawater pump
  253. Another 502 mag efi not starting. Tons of tests have been preformed.injectors fried?
  254. Back from the dead - and so is my boat...
  255. flywheel question."help"
  256. chiller plumbing advice needed
  257. Oil Capacity in 7.4 Mercruiser
  258. How do I get the top off this Holley carb?
  259. torque spect
  260. Valve cover gasket number for 525efi?
  261. Winter upgrades...what has everyone else been doing? Post pics, videos, etc....
  262. Merc Trim sender/limiter wiring help
  263. Sea water flow?
  264. Eddie Marine step pads
  265. valve spring compressor
  266. "Xtreme" remote thermostat
  267. cost to rebuild 500 EFI
  268. 454 mercruiser borg warner TR2 starter issues
  269. MERC 95 350 TBI injectors not working
  270. milky oil
  271. Best sealant for through haul fittings
  272. Front Cylinders not Firing
  273. Mercruiser engine questions
  274. Crane 168731 reversion?
  275. SmartCraft SC1000 gauges
  276. hatch actuators
  277. exhaust tips
  278. Dremel, which one?
  279. OK to run head studs along with head bolts?
  280. 496 intake deposits
  281. questions about 500 EFI's
  282. Through Hull Water Pickups ?
  283. max timing on 454mag MPI's
  284. Oil pressure gauge issue
  285. Bravo 3 trim strangeness...
  286. Small block or big block 30ft range ?
  287. mayfair steering problem....new install. Help needed
  288. Need HELP with correct prop nut\kit
  289. Need help raising fuel pressure
  290. head stud nuts
  291. Power assist steering pump needed
  292. K-Plane wiring diagram
  293. Squeaky Sea pump
  294. 502 Exhaust manifold gaskets - Replace?
  295. Blue smoke at idle
  296. Black silicone exhaust hose
  297. water water water
  298. 454 MPI Fuel Pump Issues, Pump not getting power
  299. open bow cat
  300. ???Can 250 chillers be modified to work with 177???
  301. 525efi coolant reservoir cover
  302. Gimble rings
  303. Helm Pump advice for #6 drives Please
  304. Cam / Exhaust question
  305. hello newbie here with a 22' stingray
  306. what are these tank fitting?? want to add return line!
  307. Purple gauge lights or boots
  308. Ignition/Distributor upgrade? Little help...
  309. Carpet for a 24 outlaw?
  310. 72c velvet drive borg warner where to buy rebuild kit
  311. PLUG GAP....what should it be?
  312. carb to efi
  313. holley commnder 950 efi
  314. Newb here from TX!!
  315. Stuck Tailstock on Wetsump #6
  316. Drive alignment on extension box?
  317. ZZ502 pushrod question
  318. 575 rebuild
  319. turning up 600sc's
  320. Remove Bearing in XR Gears?
  321. whipple adapter plate question
  322. 502 ignition rotor
  323. new engine
  324. Can I convert my Gaffrig with 2 throttles to 3?
  325. Mobil V-Twin ZDDP level?
  326. Need x dimension on Donzi 25 zx
  327. 496 mag won't crank
  328. Bravo1 Annual Service Guide - Help
  329. Flushing oil lines... what to use?
  330. Cruisair wiring documentation??
  331. Thunderbolt 5 ignition module
  332. weiand 177 oil fill
  333. warm starting issue
  334. Second boat with corroded water inlet
  335. Pressure testing manifolds
  336. Propshaft Runout
  337. Depth Sounder ?
  338. Underwater Lights on a Hydro Hoist?
  339. Major need of help!!!
  340. Broken valve keepers - common problem
  341. 496HO TPS low range?
  342. o2 bung location
  343. Mercruiser decals
  344. Dana exhaust for 496ho
  345. exhaust valves
  346. Considering dyno-testing / procedures for marine engine?
  347. How much water is needed to cool rubber exhaust joints and internal flappers
  348. Installing manifolds and dry risers. Where to relocate shifter/remote oil filter
  349. 502 hard to start when cold
  350. What is the procedure for checking timing chain slack?
  351. Best Headers for hp gain 2006 25OL
  352. quench effect on blower motor
  353. MSD REV-Limit Modules ??
  354. CMI Etop question
  355. Too cold with crossover installed ???
  356. 496 seawater pump failure
  357. CMI Head Stud Clearance
  358. How does this go together???
  359. WOT different RPM's
  360. Eddie Marine billet sport tabs question???
  361. Merc 525EFI oil water fuel pressure sensor
  362. trim pump major leak into bilge
  363. Steering Rams Rebuild
  364. Resonators in 502 mpi exhaust
  365. Gel coat Cracking and Stringer Loose, What to do?
  366. Automatic buffer
  367. hawk 525sc sparkplugs
  368. vice marks on connecting rod cap - how big a deal is this?
  369. 741 cam question
  370. 454 Mag not starting on all cylinders.. HELP!
  371. Hydraulic steering ram install help
  372. 2 stage water pump and outdrive for innercooler
  373. when using rod bolt stretch gauge do you do one bolt at a time?
  374. 496 scan tool readings
  375. 4 wire Corsa solenoid installation
  376. pyrometer best location
  377. Whipple oil change?
  378. This is how guages are made...?
  379. what timming are you running in your blown sbc
  380. AFR meters
  381. Ring gap on a 496 -8.1L vortec engine ?
  382. Life span of an Iconel valve??
  383. 383 rotating assembly
  384. Corsa Quick and Quiet 25 Outlaw
  385. Mercruiser 420 Oils - Zinc Additive?
  386. Can Oil Cooler Leak Water into Oil?
  387. 502 refresh questions?
  388. Small Block Oil Pump
  389. 260 mercruiser
  390. imco powerflow plus exhaust
  391. 90 26ft profile offshore project need insight on it
  392. EZ OFF on imron
  393. Altenator Charging 2 in parallel? Bad?
  394. Bravo coupler help
  395. 575SCI throttle body upgrades??
  396. Computer Tech
  397. Baja hammer tach problem
  398. rub rail
  399. Engine Tuner/Builder Toronto Area
  400. Best Aluminum cylinder head SBC 383.
  401. 496 Mag HO Oil weight/power gain
  402. Any Metal Fab Guys-What small plasma cutter?
  403. Ideas for increasing power in a pair of Merc 454 L29s
  404. Painting speaker grills
  405. Hydro Hoist w 38 Fountain
  406. Non Vortec to Vortec swap.
  407. 454 cracked heads please help!
  408. O2 Sensor location
  409. How Hot is TOO Hot !
  410. Drives trim in/out in different speeds?
  411. Looking for help with exhaust system
  412. Aluminum Header fit issue
  413. fuel sending unit with duel return lines?
  414. Am I screwed?
  415. Wall cooler?
  416. need help with any info on kaama surfice drives
  417. re coloring hardware
  418. "Budget" 555 build
  419. max over bore question on 350 sbc
  420. new exhaust suggestions
  421. Battery ?????
  422. Through hull fittings
  423. Underwater LED Placement On Cats
  424. Mercury 525 EFI Adapter Harness
  425. Dart Block Bronze Lifter Bushing Bore Oil Holes Not Lined Up, Problem??
  426. Gas tank plate
  427. 1994 baja 22 Caliber
  428. Mercury / APBA valve covers on OEM steel heads & roller rockers?
  429. Corsa 4 Wire Harness - White
  430. 525sc w/ chiller belt??
  431. A little help please on 500efi heads
  432. Does oil go bad just sitting in motor?
  433. AC Delco Rapid Fire Spark Plugs
  434. K plane rocker switches
  435. vortec cam upgrade
  436. Dash Panels
  437. engine hours
  438. Trim Tab thru hull fitting where to by
  439. Better of the Two Drive Showers
  440. Valve check????
  441. hi-performance 320 EFI
  442. bronze sea pump kit part number?
  443. baja stereo help
  444. Help with corsa exhaust please!!!!
  445. Distributor gear needed with 741 cam
  446. Understanding Piston Ring Tension
  447. Gimble bearing
  448. Roller SB timing cover
  449. Merc 1075 Roller Hyd
  450. What distributor gear with 741 cam?
  451. retrofit K-planes over Bennett, etc?
  452. exhaust
  453. Inline fuel filter
  454. Fuel pressue guage idea on 454/502mag Mpi's
  455. What exactly does "Motors have been Freshened" Mean?
  456. oil filter
  457. Cam recomendations
  458. marine blower carbs
  459. rookie in need of help
  460. New member discussing helmets/head wear
  461. Swap Shop Resolution – What’s the right thing to do – Let the forum decide!
  462. Blower pulley with serpentine acc belt
  463. Trim pump fluid reservoir
  464. Rod bolt stretch specs needed
  465. Intake to Water pump bypass hose
  466. Racepak IQ3 Data System
  467. Bravo Hub
  468. Is the splash shield needed on 502 gen6????
  469. tired of the bullsh*t vapor lock!
  470. 2.3 Quad Rotor Whipple Installation Instructions
  471. Is this piston usable?
  472. 2000 7.4 mag mpi stalling only when cold start ups
  473. one wire alternator
  474. full hydraulic steering issue/new install
  475. oil cooler plumbing
  476. Question on manifolds
  477. Baseline jetting for 502 with 4/7 & 2/3 swap
  478. 502 not firing
  479. Water pick ups
  480. Trim Tab/transome sealant
  481. Need urgent help from an expert
  482. trim tab help!
  483. Behold the glory...
  484. Whipple standard vs MOAC intercooler
  485. dallas texas leak down test needed
  486. Looking for an intake air temp gauge
  487. Chris Craft 390 X Twin TRS Out drive Question
  488. Detonation Indicator?
  489. EGT vs A/F?
  490. Head gaskets
  491. Bunk Carpet
  492. What thread is a knock sensor?
  493. Oil Change in the 496HO
  494. Keith Eckhert 2 stage water/sea pump!
  495. add O2 bung in Keith Eckert aluminum headers
  496. Oil Filter
  497. Anyone have some Weiand 10 rib pulleys for dyno use only??
  498. Engine experts input needed on used engine
  499. Replacements heads for Mark IV Rectangle Ports
  500. Wiring for shorepower??