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  1. mark1905

    Finding my engine type when tag is rubbed off

    Just purchased a 2002 Wellcraft 190 Excalibur Platinum series with a 3.0 Volvo Penta. The engine serial number tag has been completely rubbed off and the engine model and serial number are illegible. How else can I find my exact engine type? Needing to order an impeller kit ASAP..
  2. mark1905

    Help replacing old triple hinges

    Does anyone know of a replacement source for the old aluminum hinges pictured below? They came off of my rear bench seat and measure 6"x5.5". Any help greatly appreciated. Thanks!
  3. mark1905

    Fiberglass around motor mount bolts = stripped

    While poking around in the engine compartment this morning, I realized that one of the two lower front engine mount bolts that goes directly into the fiberglass had backed out and the mount had slipped a little. I gave it a whack with a hammer to straighten it and tried to put the bolt back...
  4. mark1905

    Trim motor/relays shorting out

    Went to trim the drive down yesterday, heard a funny sound coming from the trim motor area and engine lags hard from the electrical system being hit. Hit the button a couple more times, and after the 3rd time it trims down normally. Throughout the day, it works fine except for a few more times...
  5. mark1905

    Stereo amplifier tuning: A basic guide

    So.. I received this PM last night, and thought that I'd post the response here publicly as to to help anyone that needs help with stereo amp adjusting/tuning. This is just a basic guide. We're working with the JL Audio M600/6 which is a 6 channel amplifier that has separate inputs and...
  6. mark1905

    Merc service bulletin on prop exhaust hole drilling

    I remember seeing somewhere on here a Merc bulletin on how and where to drill thrust holes at the base of the prop for better hole shot. Does anyone know where to find that or have an electronic copy? Anyone out there do this with noticeable gains?
  7. mark1905

    New engine dieseling

    20 hours on my brand new GM crate longblock and it's dieseling badly. When I shut it off today after warming the oil for the first oil change, I watched it with my own eyes run on for a good 5 seconds and flip backwards and forwards on it's last breaths. Scaring me here. What gives?
  8. mark1905

    Alpha 1 Gen 2 water pump replacement

    Getting ready to do my first water pump kit on my 1997 Alpha 1 Gen 2 out drive. I've got service manual #14 in front of me, but I can't find the procedure or even a mention of it anywhere. Does any one have a page number to reference or any tips?
  9. mark1905

    Bow vs stern lifting for a 3.0LX

    I'm a little lost when it comes to the difference between a bow vs stern lifting prop and how that relates to overall advantages/disadvantages. Meaning: If I want a nice 21p SS prop for my boat that will get me up on a plane and keep me there at a decent RPM, what would you recommend? A bow...
  10. mark1905

    Water in 3.0 - Rebuilding/recondtioning cylinder head

    I'm about ready to yank off my cylinder head and inspect due to my wonderful water in the oil issue. We're leaning towards a blown/corroded head gasket or cracked/corroded cylinder head. With everyone's experience, how often is the head able to be reconditioned and re-installed? Wondering if...
  11. mark1905

    St Johns River, FL - Lemon Bluff rope swing beach

    It's about that time again for BBQ'n, tube'n and fun times at the Lemon Bluff rope swing beach out by Osteen on the St Johns River. We get a good crowd of 30-50 boats usually on Sundays from March - November and it's always a fun and borderline debaucherous affair. The more the merrier...
  12. mark1905

    Mid 90's 3.0LX vs 2000's 3.0L engines

    While hunting down a viable candidate motor to replace my shot 1997 3.0LX, I've been running into a number of 2001-2002 "lightly used" 3.0L motors. I was under the impression that after Mercruiser switched from the "L" designation, that all motors were then "LX"? What is the difference...
  13. mark1905

    Removing water from engine post-repair

    What is the best method to totally remove water from an engine after head repair? Has anyone tried an automotive type flush? Sea Foam? Any suggestions besides 10 oil changes in a row?
  14. mark1905

    3.0LX with blowby, water in oil and lots of fun times ahead. Not.

    1997 3.0LX that has lived it's life in FL.. so no hard freezing here. Runs like a bat out of hell and purrs like a kitten. Always maintained. However.. beginning a few months ago, I started getting a good amount of blowby out of the valve cover vent. At first it was just a little extra oil...
  15. mark1905

    Engine Restore products on marine engines

    Has anyone ever used this stuff on a marine engine with good results? Bad results? I've read up on it in automotive forums and it seems split.. the people that have used it say that it works great and the people that laugh at it usually have never used it. Not looking to start a discussion...
  16. mark1905

    Proper leakdown test procedures

    Could anyone point me in the direction of the proper documentation and/or steps to perform a full leakdown test on a 3.0LX?
  17. mark1905

    Electric choke not opening up

    I thought that I had fixed my choke problem, but apparently not. Choke snaps shut on cold startup, but won't open again until fully under way. Idle zone out of the marina is full of black smoke and chugging. Once I've got WOT, she's fine for the rest of the day.. even if I shut it off and...
  18. mark1905

    Chugging/missing when cold @ low RPMs

    Recently from out of nowhere, my 3.0LX has become a stubborn beast at low RPMs when cold. She'll fire right up, but anything below 2k and she wants to miss a cylinder and stall out. Getting out of the dock idle zone at idle has become a pain.. I have to give it more gas to keep it running, and...
  19. mark1905

    Ultra high output alternators

    I've been searching for an ultra high output marine alternator, but the highest I can find is the 130A model by DB Electrical which is still not enough. I see plenty of 200A - 300A standard automotive ones for sale which I would love to have on the boat.. Does anyone know of a source for...
  20. mark1905

    Starter won't stop cranking!

    Sunday morning, I go to give her a test crank in the driveway.. and the starter won't stop cranking even after the key is turned all the way off and taken out of the ignition! Had to pull the battery cable to get it to stop. When I reconnect, she's fine.. and then repeat process again when I...
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