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Recent content by dirkg

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    Mercruiser 2.5 ticking sound

    Hi! Working on an old project boat with a mercruiser 2.5 engine. I've been bashing my head recently on a tick that's being produced by the engine. The tick seems to be coming from the left side of the engine, close to the camshaft and lifters. I've already adjusted the valves, cleaned all...
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    Mercruiser 120 manifold riser and exhaust don't align

    Correct, it has the two holes for the flappers. It would have been nice if it was just a simple upgrade of the elbow, skipping the manifold - saving some bucks on that one. Anyway, I'll have a look around to see if I can find anything. Thanks for the help.
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    Mercruiser 120 manifold riser and exhaust don't align

    I'm referring to the layout of the water openings on the exhaust manifold and elbow. Look at a picture of the current exhaust manifold: https://www.marineengine.com/newparts/part_details.php?pnum=MER63122A13&pass_title=63122A13. There's 4 holes where the (cooling) water is flowing through. When...
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    Mercruiser 120 manifold riser and exhaust don't align

    So that's where I get confused. The existing exhaust manifold is clearly one from the older series, as it fits this diagram: https://www.marineengine.com/parts/mercruiser-sterndrive-parts/120-gm-153-il4-19791982/5192049-thru-6229717/exhaust-manifold-assembly-end-cap-and-elbow-assembly The lower...
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    Mercruiser 120 manifold riser and exhaust don't align

    I actually did that exercise with some drawings I found of the old en new gen 120 engines. I seem to be having the newer style exhaust system (42421A5), which made me think about having the wrong exhaust manifold. Looking at the rocker cover, manifold, and other parts, I seem to be having the...
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    Mercruiser 120 manifold riser and exhaust don't align

    Thanks @makomark, unfortunately I do not. If it makes things any easier I have the serial numbers. (No photo of the transom plate atm unfortunately).
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    Mercruiser 120 manifold riser and exhaust don't align

    Looking for some expert help 'cause I'm a bit lost with the different parts and Frankenstein of a boat project that I got myself into. 👀 So I bought an old Bayliner with a Mercruiser 120 2.5 as an "economically non viable" project to learn a bunch of things about boats. So far into the project...
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