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    Quick question: What changed in 2001 for the Merc 350?

    Friend has a 2001 sea ray 210 with fuel injected Merc 350. Trying to decide if he needs manual 24 or 31 without knowing his S/N or if he has EFI or MPI. Brief review suggests that Manual 31 they must have gone entirely to MPI and just dropped the other sections out? Any other differences in...
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    Electric fuel pump recommendation

    Hello gents, Been away for a while, but trying to get a second boat up and operating here. Long story short: I need to install an electric fuel pump on a boat. I'm aware of all the electrical and oil pressure cut-off issues. I am simply looking for your recommendations on an electric fuel...
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    wca_tim, shabah,.. others? 4.3 upgrade w/water in oil

    Well gentlemen, I finally got around to putting my acquired parts together onto the boat. Took it out for a test drive on Thursday. Hit 48 mph right off the bat, which is pretty good given what I've been at before (tops ~42 with 2 barrel). After running a while I checked the oil and it was...
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    350 Ski Tique Troubles

    A friend and I have been rebuilding his CC Ski Tique.. He bought a 350 base engine for it a couple years ago and we are finally getting around to putting it in. Yesterday we took it for a test drive after breaking the cam in in the driveway. It fired right up out on the water, but was pumping...
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    4.3L++ Which Gear Ratio to Use?

    Just read a post on the upper gear ratios for someone with a 4.3L engine and saw some posts by assorted people (bondo, wca_tim, etc.). I would like to order an SEI outdrive but am looking for the best bang for the buck. I've acquired most of the pieces for my engine upgrade (edelbrock 2114...
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    Trim Cylinder Seals

    '89 Alpha 1 - as stated below.. Although I don't SEE my trim cylinders leaking tranny fluid and don't have a problem with operating them (yet), I can assume they are since I seem to be sucking in water. The strawberry milk in my trim pump doesn't look too great.. And I had to patch some...
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    Carburetor Strip Kit..

    I'm working on acquiring the components to upgrade my 4.3L engine to vortec heads, manifold, and edelbrock 600 cfm carb (1409). Already have the heads and carb is on its way. I think it was Bondo who suggested getting the strip kit to tune the carb properly. I am guessing that the Edelbrock...
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    My Upgrade Options..

    I've got a 91 4.3L engine with 2 barrel carb. Like many others I am looking at upping the performance a bit. I've been reading over old posts as usual and just want to make sure of a few things. RECAP: I've got a set of used Vortec heads that I would like to switch out and am planning on...
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    Steam from Valve Covers

    Well finally got a chance to run the new engine this weekend. All in all it ran quite well and is a significant upgrade in terms of acceleration and handling (3.0L -> 4.3L mercruiser). In total, I probably ran the engine this weekend for 3.5 hrs. It is running a bit warm at idle, so I have to...
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    Ignition Coil Question

    Alright, one of the strangest things I've ever seen and I'm leaning towards it being abnormal.. I couldn't get the engine to start and figured I flooded the engine, so I pulled the plugs to dry them out and turn the engine over a few times to expel what gas I could. (The engine did start after...
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    Another alignment issue..

    Hey guys, Well like I've said, I'm finishing up the 3.0 to 4.3 upgrade. Engine was running well off of original boat electrics and controls, so I was finally attaching the outdrive. (Currently rebuilding the carb just to make sure performance is optimal). Was trying to align the engine (I...
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    4.3L Engine Manual.... sorry

    Okay. I hate to ask, but does anyone have a link to the 4.3L Service manual for a 1991 4.3L. I only have the balance shaft version of the manual from on-line... which also has an electric fuel pump. I have a mechanical fuel pump. Any help is greatly appreciated! Thanks, SB
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    Identifying 4.3L V6 Engine and one stray wire...

    I'm currently in the final stages of completing my 3.0L to 4.3L engine swap.. I probably should have looked at this before, but oh well. The engine is from a 1991 boat and has a 2 barrel intake/carb on it. I am assuming that it is the standard 4.3L 155 HP or 160HP or whatever motor. I'll...
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    Gear Ratio Q's

    I'm hoping someone can help me understand this a little better. The 3.0L Alpha setup has a 1.98:1 gear ratio. The 4.3L Alpha setup has a 1.84/1.81:1 gear ratio. The difference is 0.15 rotations of the engine per 1 rotation of the outdrive. Seems relatively minor at a glance.. Overall their...
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    Other than fuel pump...

    '89 3.0L Merc with Alpha One. Took the boat out a couple weeks ago for a run. Seemed to be going great and was running well. The boat was running for probably 30-40 minutes. First 10-15 were in a no-wake zone and was at slow speeds. Next 20 minutes or so was running essentially WOT (~35mph...
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    Engine Swap

    Not that I plan on doing this soon.. but if its possible it may be in the cards. I currently have a 3.0L Merc with an Alpha One. If I were interested, how much work would it be to drop in a 4.3L? The boat had options for the 4.3L orginally, so I would assume it would be possible to mount it...
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    Replacing Oil Pan Gasket

    Engine/Drive System: 89 Merc 3.0 with Alpha One Is it possible to drop the oil pan out and replace the gasket without removing the engine from the boat? Anyone ever done it?
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    Water Intake... STUMPED

    Mercruiser 3.0 with Alpha One. I replaced the gaskets, o-ring, and impeller of the sterndrive water pump. I've made sure all the lines are clean. This was all after I identified the impeller as being bad as no water was coming up to the engine. (The old impeller was toasted.) With water...
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    Engine Vibration

    Hey all, First, I just wanted to say that I really enjoy this forum and all the great advice everyone has to share. Keep up the good work! I have a 1989 SeaRay 180 open bow with the 3.0L mercruiser and alpha one outdrive. I have only been testing the boat with muffs as I have not had a...
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