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    Mercathode transom mount 42600A18 on twin I/O systems

    I'm stumped here. I have some issues with corrosion on one of my drives and believe it's because someone installed the transom mercathode incorrectly. Does anyone have installation instructions for P/N 42600A18 I believe this part number is for twin i/o setups but I'm unsure because I just...
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    470 Risers. Where can I find new ones?

    Anyone know where I can purchase 2 risers for my 470? I cannot seem to find anyone who has them new. I need the ones for the aluminum manifold (P/N 98562A6) apologies to the mods if this is in the wrong thread
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    Mercuiser 180 temperature issue

    Looking for some feedback here. I'm having issues with my portside motor increasing in temperature upon load. I noticed it was running warmer than last year and was 20 degrees higher than my starboard motor. When I got out of the harbor and throttled up the temp jumped from 160 to 180 in 2...
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    470 coolant pressure test

    Greetings, Looking for input on how long to expect a cold block to hold pressure testing for a coolant leak. I pressurized the system at around 7psi and it bled off about 1psi after an hour or so. I'm assuming that it's acceptable. Anyone have any input?
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    Speed sleeve for Cam seal /470 required items

    Hello there, Just did an oil change and believe my Cam seal on my 470 might be leaking (kinds milky oil) Does anyone have the part numbers of the speedi sleeve and seals needed to do the job? I did the job once before so I know what needs to be done but lost the information for the sleeve and...
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    Transom mount mercathode with twin i/o

    Not sure if this belongs in electronics forum or here, so apologies to the moderator in advance. I have twin alpha one drives that have a peculiar issue. One drive gets galvanic corrosion way more than the other (port gets it and starboard gets minimal) I noticed that my transom mount...
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    Osco risers for 470 motors

    I'm trying to figure out if an osco 0879 riser can be used on one of my 470 motors. I picked one up on eBay to keep as a spare (got it for $100) but realized after I purchased it theres two different ones,one for aluminum and one for cast iron manifolds. Does anyone know if they are...
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    Alpha one transom studs

    Hey Guys, Getting ready to replace my port side transom housing and cant seem to find the studs that mount into the housing itself. I have the part number for the bottom 2 with the anodes (97-55989A8) but what is the part numbers for the other ones? is it p/n 16-56296 for the remaining studs...
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    Alpha one U joint groove/leaking at the end of every season

    Anyone have any past experience using a speedi sleeve on one of these U joint yokes to stop it from leaking? Every year I have been having issues with one of my drives leaking oil because it's got a bit of a wear on the shaft where the seal rides. It will hold 15psi for a week on my stand in...
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    3.7L 180HP (470) fuel consumption

    Question for anyone who might know, Roughly what's the fuel consumption per hour (@3400 rpm) on a 470 Mercuiser? Specifically the one with the 4 barrel carb I know there are many factor at play here but I'd believe someone might have a rough guestimate or benchmark. Anyone?
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    470 mercuiser milkshake

    I did an oil change on my starboard 470 and to my surprise I pumped out a milkshake. Bummer.... I had ran the engine to warm it up before pumping out the oil and it ran fine. I just noticed the reservoir was out of antifreeze prior to starting it. It took about a pint to fill it to the top...
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    Winterizing heat exchangers

    Question for all you freshwater cooled dudes. When you winterize your engines, do you leave the drain plug out of the heat exchangers or do you drain them, then re install the drain plug? Where I live it's been unusually cold for this time of the year. I was worried that they might be half...
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    Toilet pump out (not) Carver Montego

    Trying to figure out why my head won't pump out. It had a manual pump that appears to look like it brought the waste up to the pump out port on the side of the boat where you would hook the suction pump up to. It was dry rotted so I bypassed it and hooked the waste pipe directly up to the port...
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    Exaust pipe change 180 (470)

    I'm gonna ask a stupid questions that I know the answer to but want to see if MAYBE someone else has done it. I suspect that my port exhaust pipe is leaking. I have the tell tale signs of water in the bilge when I run the engine on muffs and can see some crud next to the pipe where it appears...
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    Alpha one Drive/Anyone ever see this?(Photo)

    I gotta tell ya...This has me puzzled. Iv'e had this drive for 3 years now and noticed this bump on the side but never gave it much thought until I was changing impellers and seals on it just yesterday. It might have had some water underneath it and it lifted the filler that was hiding it. I...
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    I/O paint Substitute for Trilux 33

    Is there any substitute for this Trilux 33 paint? It's $100 a quart. There has to be some sort of competition out there that offers a paint that's a bit more realistic in price. Anybody?
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    U-Joint Bellows small amount of water/ Alpha one

    Wanna pick some brains here... I pulled my drives off for winter storage and found that my port side u joint bellow had a small amount of water in it. Not much, but none the less some water. My rubber is 2 seasons old and OEM, not after market stuff and at a quick inspection, seems perfectly...
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    Canvas cleaning

    Hey guys, Packing up my boat for the winter and noticed a film of mildew on the inside of my canvas top. What's the best way to clean it off without bleach? Sounds like a stupid question but I just want to make sure whatever I use does not damage the material. The top is only 4 seasons old...
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    Alpha one continuity wire

    Does anyone know what size screw holds the continuity wire on the alpha one first gen drive? The one from the transom mount to the drive specifically I'm launching tomorrow and I forgot all about re attaching them and I know I don't have the old screws and would like to get them on my way...
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    3 to 4 blade changeover on twin screw

    I've been thinking about swapping to 4 blade props on my 27ft Carver in hopes of getting it to plane out faster than it has been. My thought is that 4 blade props would get the boat out of the water easier than a 3 blade and hopefully allow me to plane out easier than the boat does now. I am...
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