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    mercruiser coolant lines

    hello i just wondering what is the point of this part any ideas?maybe just for support? maybe just to give a place to mount blue drain plug? thanks just curios. wile vonverting my boat to closed cooling it just seamed like more potential fail points
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    serpentine belt too close to exchanger?

    thsts a good idea ill try that. going to start for first tine this weekend
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    serpentine belt too close to exchanger?

    hello all, im in the middle of installing a new closed cooling system and my serpentine belt looks awfuly close to the heat exchanger does anybody have an opinion or rule of thumb for this sort of thing? any input could be helpful thanks,
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    Exhaust manifold block off plates

    Hello all, I am installing a new full closed cooling system on my newly rebuilt 5.7 the kit included a block off gasket but no plate does that sound right I thought their would be a flat plate plus gaskets
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    Alpha won’t trim underway

    The trailer switch has already been bypast the throttle switch does it all and I have no trim indicator
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    Alpha won’t trim underway

    It does go up and it goes down could it be getting a small amount of stray voltage from the motor it the weirdest thing the test light lights up wile going up and going down and the drive is going up and going down and no I’m not on the constant hot side of soilanoid
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    Alpha won’t trim underway

    So I finally got to go test my setup to see if I had fires/hoses switched I put a test light on solanoid and it lights up when I hit up and when I hit down any thoughts?
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    Closed cooling worth the money?

    Thanks for all the input their is an excellent boat salvage yard in Quincy Ma mass marine parts I think I’ll look around their first not sure if the value is their to spend 2200 but it’s close and sounds like life could be easier with it and I could avoid a breakdown or a bad spring opening my...
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    Closed cooling worth the money?

    Hello all I am installing a reman 350 vortec in my 241 Grady offshore and am considering closed cooling. the kit that would fit my setup is 2180 that’s a lot of money do you think it’s even a consideration or is it just an obvious no brainer I’ve considered used but their are so many kits...
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    Alpha won’t trim underway

    Thanks that is very interesting I will check that out it does stay up if I left it wile stopped then go thanks I had place else to check
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    Alpha won’t trim underway

    I thought it was I felt like somthing just didn’t have the power
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    Alpha won’t trim underway

    Hello, new to me boat 87 241 offshore alpha 1 260 hp My Outdrive goes right up when stopped but wile cruising I can’t get it to trim up at all if I stop raise it then drive it will stay up I replaced pump unit with anouther used one with no difference all my the power wire and jumper to...
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    Mercruiser 357 question

    And yes it is a marine distributor I said delco but it’s like the delco but it’s a sierra
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    Mercruiser 357 question

    Thanks so much I’m going to be ready through those links tonight about the part numbers sombody got rid of the thunderbolt ignition and installed a delco one I think? I needed a shunt to time it and I got a new ignition modual from my merc dealer (bills outboard in hingham Ma) love that place...
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    Mercruiser 357 question

    Their is a through hull for the water and yes it’s I could be an alpha one so I must have that included kit thanks now does anybody know where I could find parts breakdown on these motors I want to get a look at what cams they both have
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    Mercruiser 357 question

    Thanks it is not a closed cooling system
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    Mercruiser 357 question

    Hello I bought a boat with a 357 merc part number 865108r88 it is connected to an alpha but has its own raw water pump when I look up the part number it shows an engine without the raw water pump but mine clearly has one and I believe it’s factory I’m about to get this rebuilt is it possible I...
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    Blown head gasket

    Other 4 cylinders had good compression I have anouther freshly rebuilt non vortec 5.7 that I put in the boat Grady white 241 offshore and I am disappointed in the speed I never ran this boat with this motor I bought it broken I would like to take these heads to machine shop and do the vortec...
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    Blown head gasket

    The engine still started and ran smooth only under a load it was knocking it’s a Mercruiser 357 alpha
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    Blown head gasket

    What causes this center 2 cyl on each side I bought a boat with this engine knowing it was blown but I was considering using the vortec heads and Mercruiser intake on the other motor I have for boat
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