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    Manifolds (Trying to figure out what I am looking at)

    I've actually never seen that happen but I will take your word on it. I'll start with the manifolds then.
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    Manifolds (Trying to figure out what I am looking at)

    I thought about it last night and I'm going to rule out 1-5 for the following reasons: Timing would show on both banks which it doesn't Same goes for the cam and more importantly I have the paperwork, it's the correct marine grind for that serial number. Or well... what superceded to it. The...
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    Maybe my turn for new boat time

    Well thats just it, I did at least think I knew where I was at and what my heading should have been. And it went from sunny to zero visibilty in about 10 seconds. I had a 2 mile straight shot to the ramp to pull for the year and messed up and won't even argue that was 100% on me. Had I not...
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    Manifolds (Trying to figure out what I am looking at)

    So I'll preface this with the following: Engine is a fresh rebuild, see my other thread for that journey Manifold and elbows are brand new Mercruiser I checked all sealing surfaces for straightness prior to installing This is what happened on the old engine it seems though those had a confirmed...
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    Maybe my turn for new boat time

    I got caught in a dense fog on the bay probably 10 years ago. I kid you not when I say visibility was less than 10 feet. The bow of my 19' wasn't clear to me at the helm. Needless to say I finally replaced the compass that leaked all its fluid that year. I was driving what I thought was still...
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    Trailblazer for Tow Vehicle?

    I had one, towed my boat all the time. Put some miles on it (got it with 89k and sold it with 235k) IIRC 3.73 and 4wd was 5,500 lbs with a 10,500 GCWR with the I6 and with 4.10s would do 6,100 lbs. Brakes are a little weak by modern standards, figure it's a truck that was on the drawing board...
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    Maybe my turn for new boat time

    I really like the enclosure.
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    How do you all like your remote oil filter setups?

    Just out of curiosity, anyone have a P/N for the 30 PSI bypass for a 4.3l? I found a few GM numbers but no mention of pressures.
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    Rev 4 to something else

    I've seen the solid hubs as well though they seem to be higher pitch... 25+ around here. I had a friend spin a hub over the summer... there aren't many prop shops around to begin with but one local one claimed they were able to do the work... after the 4th haul out they got it right... kept...
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    Rev 4 to something else

    I do run a non plus mirage on my boat and played around with different props quite a bit on the old engine. I will start by saying my boat is probably an exception to the rules as it is an old heavy deep V... so more or less what the thing was designed to go on. I ran a plus of the same pitch...
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    165hp I6 removal

    Depending on the boat, it's about a 4 beer job. ;)
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    How do you all like your remote oil filter setups?

    I want to know what stainless merc uses on the trim and tilt lines... mine are the original 84s and still shiny... even on my auto projects they tend to rust with the brine they use here and the ocean air. The AN stuff is nice but the hydraulic stuff is more than adequate. I'll get scheming...
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    How do you all like your remote oil filter setups?

    That seems to be what I recall mine looking like. I know GM used a bypass on the s10s with the remote kit.... Maybe I'll look into that. I'll clarify, the OE ones aren't cheap lol. I have a long history with hoses and oil coolers... I uh... don't trust plain old rubber line any more lol. I was...
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    How do you all like your remote oil filter setups?

    I'll be pulling the 4.3 out this winter to pull up the floor and make any repairs I find... but I was thinking of adding a remote oil filter setup to the engine. First, they aren't cheap by any means... and the filter isn't exactly bad to get to either. When I glassed in the mounts I notched the...
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    Oil Analysis for high-hour 4.5L 250 HP

    Thanks for the info. I'll probably never own something that new and I've actually never seen a 4.5 up close though saw a 6.2 and while different for sure... It seemed derived or maybe inspired from a small block but I was on the fence about it. It looked "odd" for sure. The whole merc only...
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    Oil Analysis for high-hour 4.5L 250 HP

    You know, I never really dug that deep into it but aren't the 4.5/6.2 just in-house tweaked versions of the 4.3/5.7 since GM no longer produces them?
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    Oil Analysis for high-hour 4.5L 250 HP

    I'd post my analysis from my 4.3 but it'll be skewed because that was on a fresh rebuild. I'd say it is comparable and will post if anyone is interested and wants to cross compare. I pretty much always run delvac 15w40... good results on my old 3.0l and on the diesels in the 33. When it can be...
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    Staying warm on boat in the winter

    I don't even throw on the wetsuit on the wave runner in the 50s. But I understand the condition as far as you're concerned.... So all kidding aside... They have nice heated jackets but since you have the headroom... why not just an electric blanket over sweat pants/jacket. That should suffice...
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    For those thinking about an engine swap...

    Yeah... Doesn't mean there aren't spots with problems I can't see... But everything above the floor and around the transom assembly was good as far as drilling sample holes....
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    For those thinking about an engine swap...

    2003 vortec. I kept the lower but used the new to me 1.84 ratio upper for the 4.3l. I get 4700 on the tach but seeing as I've hit the rev limiter not much above that with a different prop, I have reason to believe it is actually 4900, so it reads 200 RPM low. I have a digital shop tachometer I...
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