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    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    This engine was rebuilt after cylinder number 2 had zero compression, cyilinder was pretty marked up, and rings were cracked. After 34 years I think it was time. So it went through some rigorous cleaning. Was completely dismantled. The warped cover was pretty much overlooked that's all. I...
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    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    I don't see it, but the way this motor was running and the adjustments it took to keep it running in gear at idle, I would not be surprised. One thing is for sure it was not running lean but it did have some alarm buzzing from briefly overheating issues in the parking lot on a hose tests early...
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    Force 120hp won't start

    Check the link
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    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    The picture you're reffering to is the piston with some drops on it. Here is the picture after I wiped it.
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    Milky fuel in carb intake force 85hp

    When you rebuilt the motor did you open all the covers? Like exhaust? Did you make sure the cover is not warped? My engine, a 120 was running like **** and dying at idle, had to run it at higher idle to stay in gear and not die. I was getting water in the cylinder chambers. But I was getting...
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    Force 120hp won't start

    https://www.crowleymarine.com/force/oem-parts/outboard/1991/120ld91d-l-drive-force/starter
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    Force 120hp won't start

    Go to Crowley Marine website and get a part number from there. Your motor is a 99?! From the model you gave in the beginning I thought it was a 91. 120LD91D.
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    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    Yeah I opened it up it and it was definitely water, all the pistons are pretty clean ans shiny. The bolts for tye cover were tightened twice and some were still loose when I opened it. I took off the exhaust cover and had to re-surface it to make it true, it was off at 0.20in warp which is a...
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    1990 Force 120HP carbs mix adjustment help

    I already got the plate for 75 shipped, no biggie. I actually had to re-surface the exhaust cover, it was warped 0.020 which is bad. I used the sharpening stone in the picture and it is now at 0.002. That is acceptable. The crank seal at the bottom was replaced when I rebuilt the damn thing. I...
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    1990 Force 120HP carbs mix adjustment help

    The exhaust plate was pretty warped. I was 0 020in în the worse spots. I used a special stone and brought it at 0.002. I think that even with new gaskets and separation plate it would have still leaked.
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    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    Yeah it was a long project, I knew about the bad rep Force engines got. I have a friend with a 96 125, runs great offshore. This one is a 1990 and 34 years later you can rebuild it for 1k and maybe run it another 10 years for offshore fishing. Spending 10k on a used engine right now is not...
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    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    Compression was done 140 and 135. I mentioned earlier in the thread. Motor was rebuilt completely. I have several posts here with all the work. I just measured the worp clearance of the exhaust cover and it was .018in I used a stone to bring it straight and now is at 002 in. Pretty close to...
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    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    It's a brand new piston. Where do you see the scoring? I will remove the head and clean it all up. Yes I removed everything I will spray some stuff to lube the bearings.
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    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    I removed the exhaust cover and I believe there was some water leaking in the exhaust chamber. I took pictures. This should cause my issue right? Only 3 and 4 show milky stuff. I have to also buy tyhe separation plate. The one I reused is way too deformed. Do I remove the head?
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    1990 Force 120HP carbs mix adjustment help

    Ok took off the cover and I see milky stuff on the 3 and 4 exhaust chambers behinfld the cover. See pics. I need to buy that separation plate as it is too deformed. Should I remove the head also?
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    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    So I started the motor for 3 min to check the rectifier I just put on that fuxed the 16V over charging the 5 wire one caused. I used the original boack rectangular one and it is back to 13v at idle. Then I took off tye 4 plugs and took pics of the cylinders with an endo cam. number 2 and 3 look...
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    1990 Force 120HP carbs mix adjustment help

    Would that cause the dying in gear at normal idle issue?
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    1990 Force 120HP carbs mix adjustment help

    I just took a picture of the #2, 3 and #4 cylinders with an endoscope cam. #2 and #3 look dry #4 looks wet that is not normal right? Even thoigh it's the bottom and everything reponds to gavity. I am taking off the exhaust cover. Should I take the head off also. I did get good compression at...
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    1990 Bayliner Trophy with twin Force 120s need advice on prop sizes

    Thanks TexasMark. I looked at the pistons and they have carbon build up they don't look steam cleaned clean from water in the chambers. I was told that with water in the chambers I would show a clean piston, but that is not necessarily true right? So as I said I did spray carb cleaner over the...
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    1990 Force 120HP carbs mix adjustment help

    I just sprayed carb cleaner on the 2nd engine exhaust cover and it also dies. Must be normal. Still the plugs are too clean on the problem engine. I did compression again and 1 and 4 are 140 2 and 3 135.
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