Recent content by The nut

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    Need help! Mind of its own Johnson gt150😬

    And I got it done! Lowest compression was mb 89 but could argue it was 90 Avg across all of them was 91-92 with 92 or 93 being the highest
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    Need help! Mind of its own Johnson gt150😬

    Ok just did a timer light test and one cylinder the light quite flashin when I wiggled the wire! May b my prob? I have never done a compression test yet my self I googled it and I can prob figure it out but would someone mind sending the best way to do it?
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    Need help! Mind of its own Johnson gt150😬

    Here’s the model
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    Need help! Mind of its own Johnson gt150😬

    OK thanks a lot guys I’m not at the boat currently but I’ll try get that model # next time I am So if I’m losing cylinders I won’t necessarily b able to hear that? Just sounds like less rpm?
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    Need help! Mind of its own Johnson gt150😬

    Hey all I’m quite new to this and hopefully this is the right thread to post this on So I’ve got a Johnson GT 150 (late80s-early90s) not exactly sure.. Anyways see if I can explain my prob So for awhile the thing used to have what it seemed like 2 WOT positions From what I can tell WOT is...
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    What’s my engine

    Hey guys Y’all prob think I’m kinda blond but still young and getting into this What is the engine? Is it actually 340hp or older version of 5.7 Not my boat just seen some pics of the engine Thot if someone knows right off that would b great thanks!
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    228 mercruiser through hull exhaust on old thunder craft

    OK thanks man! See what and if we do anything
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    228 mercruiser through hull exhaust on old thunder craft

    Ok.. So a boat like this would have a bit of water coming out? So if I find a diverter then elbow up from man’s and then through hull a good piece above waterline would b safest?
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    228 mercruiser through hull exhaust on old thunder craft

    Oh ok makes sense! So if I would get around to experimenting then mb it would b cooler to have pipes come out 1/2 inch below water line?
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    228 mercruiser through hull exhaust on old thunder craft

    Oh ok so if I would have exhaust above water it would look kinda dumb cause water peeing out the whole time? Or is there a way to have just engine exhaust coming out?
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    228 mercruiser through hull exhaust on old thunder craft

    Ok yup That is where I would go off of tho to go through hull? Does that pipe exhaust water as well? Or just engine exhaust? Just wondering cause for winterizing I know there’s a plug on bottom of manifold there to drain water? Sorrry again for dum questions! Still new to it all
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    228 mercruiser through hull exhaust on old thunder craft

    Right yup ok Would it not b possible to do a bit more of a redneck job? Like Would it work to find a universal diverter of some sort to attach to circled part there on pic and just some pipes straight out the back?
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    228 mercruiser through hull exhaust on old thunder craft

    Ok it’s the log manifold
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    228 mercruiser through hull exhaust on old thunder craft

    Hey sorry for dum question but I don’t have a whole lot of experience with inboards yet What’s difference between log manifolds and the newer ones?
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    228 mercruiser through hull exhaust on old thunder craft

    Hey guys So my brothers got a older thundercraft with the 228 mercruiser Thinking of mb installing through hull exhaust Has anybody done this on this engine? Or a similar boat? Thinking prob put tips through hull a good shot above waterline But then would still like to b able to switch it to...
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