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    VHF Radio - LCD Blank, may need some recommendations for a new one...

    While working on my Maxum this afternoon, I discovered that the LCD on the VHF radio was not displaying any characters. It's backlit, but no characters show up. Seems to function fine otherwise. We haven't been out in the Sound (Puget Sound, WA) since we've owned the boat, but would like to...
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    Using a 3-bank charger for only 2 batteries??

    I'm getting ready to purchase a new ProMariner ProSport 20 onboard battery charger. My current setup just has two batteries; one dedicated starting, and one brand new deep cycle. I MIGHT install a 3rd battery in the future, so I was thinking of getting the 3-bank ProSport 20+, but am not...
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    MSD 6M-2 Ignition Module in place of Merc Electronic??

    Has anyone tried replacing the Mercruiser Electronic Ignition with an MSD 6M-2 Ignition on a 7.4L (1990)??? Used MSD in all my other performance cars. Just wondering if it was worth the cost in a Runabout?? Maxum 2400SC 7.4L/Bravo.
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    1990 7.4L/Bravo Starter Replacement - Does this look right???

    I received the new starter for my 1990 Maxum 7.4L/Bravo. It looks different enough than the factory starter to cause me concern. The original starter has the following on the end-cap: "9000762 Delco Remy US" "0B02 SAE J1171 Marine" The new starter is an Marine Electrical Supply, MES...
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    Bottom Line on Dual Batteries - WHICH ONES??

    Hi folks. I've done the searches and read what I could find, and I have all my questions about the wiring configuration, switches, ACR, etc., answered. Howerver, I'm still left wondering about the actual batteries themselves. My 1990 Maxum 2400SC w/ 7.4L/Bravo is currently wired with a dual...
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    Trim Gauge???

    My 1990 Maxum 2400SX 7.4L/Bravo doesn't currently have a trim gauge installed. It does appear to have the Trim sender and Trim Limit switches installed on the gimbal, however. Assuming that the wiring is up under there somewhere, is there a particular gauge that I need to get to use with this...
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    Warm Starting Issues - Starter??

    OK, here's the setup. I have a 1990 Maxum 2400SC with a 7.4L/Bravo that has about 295 hours on it total. It is setup with dual batteries: One starting battery (850cca) and one deep cycle house battery, both wired to a standard dual battery switch with 1-both-2 (starting battery is wired to 2...
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    Thermostat Housing for 1990 Mercruiser 7.4L

    I noticed that my thermostat housing is leaking slightly around the base gasket on my 1990 Mercruiser 7.4L even after I replaced the base gasket and correctly attempted to seal it. The housing is brass and I believe it's been warped slightly. I may try to make a thicker gasket for it, but was...
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    SeaWater pump repair on 1990 7.4L Mercruiser?? 2-piece vs. 1-piece???

    My 1990 7.4L Mercruiser w/ Bravo One currently has a 2-piece plastic seawater pump... I was going to rebuild it, but noticed that there is a small crack in the bottom of the plastic housing. It's 19-years old, (but only 290hours total) so I suppose it's exceeded it's lifespan... I haven't...
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    Adding a Trim Gauge to my 1990 Bravo One??

    I'd like to add a trim indicator gauge to my 1990 Maxum 2400 SC with 7.4L Bravo One... What parts am I looking for to make this happen, and can it just be added? I'm assuming there is a sending unit and obviously the gauge, but I can't seem to find any info on what parts I need to do the job...
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    1990 7.4L Mercruiser Intake Manifold Gaskets?

    I'm getting ready to reinstall the intake manifold on my 1990 Mercruiser 7.4L Motor... Has Oval-Port heads... In looking for intake gaskets, there seems to be a choice of several different parts... ranging from $16.00 a set to $40.00 a set... I usually think that you get what you pay for...
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    Riser Mounting - Factory bolts or replace with Studs?

    Like the title says... I'm replacing my exhaust Elbows (Risers, according to some parts manuals) and the factory units were secured using long bolts. Do I need to pop the $$$ for the stud style mounting kits available with some replacements, or are the bolts fine? Seems it would be more...
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    SeaWater Exit on 7.4L w/ Bravo One???

    When I'm running my 1990 Maxum w/ 7.4L Bravo One, the bulk of the fresh-water being drawn into the system appears to be exiting from up near the transom, coming out around the steering gymbal/mounting area. Is this correct? I'm only asking because while I have it apart for the other work I'm...
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    Sealant for water fittings on exhaust??

    What sealant does one use on the water fittings for the water fittings on the exhaust manifolds, and also for the water fittings on the Center Risers/Elbows? Thanks,
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    Cast Iron vs. Aluminum Exhaust Manifolds and Center Elbows/Risers and best brands?

    I noticed that companies like HGE, GLM, and Barr, sell both Cast Iron and Alunimum versions of their Exhaust Manifold and Center Riser kits for my 1990 7.4L... Osco only appears to make cast. What are the general preferences out there of Cast vs. Aluminum? Also, is there a preferred/better...
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    Painting Engine Components...

    Is there a good reason why one can't paint the intake manifold and exhaust manifolds on a Mercruiser something other than the factory black paint? I know it's a special corrosion resistant paint, but can one use a good quality high-temp paint on these parts instead without any ill-effects?
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    Full-Closed Cooling System Riser/Elbow Gaskets?

    I have a fully closed cooling system on my 1990 7.4L Mercruiser. I need to find new blockoff gaskets for the Exhaust Manifold to Exhaust Elbow/Risers joint. The stock set was just a single thick gasket. Are there better options out there? If so, could you point me to the location to purchase...
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    Fresh Water intakes/Pumps on 7.4L w/ Bravo One??

    I'm just wanting to clarify something before I start tearing into things... I have a 1990 Maxum with 454 (7.4L) and Bravo One. If I understand correctly, I have a freshwater (seawater) pump located on the motor. This pump draws water in through the lower unit and cools the motor, right? Is...
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    1990 Mercruiser 7.4L in Maxum 2400 SCR - Heat Riser issues?

    Good Day. First, let me preface this post by saying that I'm a good mechanic and have quite a bit of experience with motors of all kinds... so I'm not completely clueless about mechanical issues on motors. I just don't have a lot of experience with marine exhaust systems or issues that may...
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