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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?

    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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    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

    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

    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

    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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    Transom straps

    What are some opinions on how heavy transom straps should be generally? My boat 241 offshore I estimate around 4400 lb I loop my bowline around winch bracket and back to boat and 2 transom straps I’m thinking they should have st least 1500 lb working load hoping my thick bow line might have 1500...
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    5.7 alpha knock please listen

    Hello, I recently purchased this boat, the owner said it needed a motor (Witch I’ m prepared to do.) But the 2 people that listened to it think it’s something else. there’s no noise at idle, and I have good oil pressure.
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