Recent content by Lift12

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    Lazy alternator

    1998 7.4 MPI 0L347054 Alternator doesn't start charging till RPM gets above 2500 but will continue charging at lower revs once it starts. Is it just time for a rebuild or is there something else at play here?
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    Hour Meters growing apart

    No, I wish it were that easy to explain Jim. I haven't tried it on this boat but I believe the alarm for zero oil pressure would be on constantly if I left the switch in Run without the engine running. That's what happens on my other boat with 5.7/Alpha setup.
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    Hour Meters growing apart

    My hour meters (built into the tachs) are inexplicably growing apart. 340 Sundancer, factory "Sea Ray" tachs, no other info. Fair to guess they at Teleflex? Engines are 1998 (Boat is '99) Mercruiser 7.4 MPI, Bravo 1. This is my second season with it. Bought it with 22.2 hrs apart. End of last...
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    Gear oil reservoir system - 1988 vs 1998 Bravo TA

    FT your image wasn't visible to me previously, thank you. Is this the '88 model? The hose I traced from the reservoir went to 5B in the left middle image. 5.-Gear Lube Fitting
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    Gear oil reservoir system - 1988 vs 1998 Bravo TA

    It would be fun to experiment. 3s became an option in 2000 on the same boat. The 340 with outdrives is rather uncommon and I appreciate the performance at the top end over shafts. It begins to slip off the step below 30 mph and I've wondered if 2s or 3s would change that. No doubt that more...
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    Gear oil reservoir system - 1988 vs 1998 Bravo TA

    *groan* Just my luck. Dubs, I'm aware of the external system you speak of from it's use on Alphas. Perhaps I'll consider something like it. Frequent haul outs are inconvenient (expensive) on a 34' Sundancer. I have experience with an Alpha that ran without gear oil/with water. I guess I'll...
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    Gear oil reservoir system - 1988 vs 1998 Bravo TA

    I have 1999 boat with twin Bravo 1s, 0L159373 and 698. Starboard Transom #0L531223. The PO replaced the Port transom assembly with an older version (1988), 0C372852, and decided for whatever reason not to connect the gear oil reservoir to the bell housing. I feel this is an important system and...
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    Mystery diode on alternator

    Thank you. I agree that it takes two leads to make a circuit, which made these even more mysterious. The tabs for that second connection had been removed. I ran the boat today without them with no issues.
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    Mystery diode on alternator

    This is the device. I wish I could show you how it was connected. I too thought it was some remnant of previous device and so I removed it without documenting exactly which stud it was on. Now that I've found the diode inline I worry that it is indeed a necessity.
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    Mystery diode on alternator

    Hello, New to me 1998 7.4 MPI Bravo 1 (0L347054) twins. I believe the alternators are Mando, but I've been wrong before. I've discovered a fuse holder dangling from each alternator, completely unsecured excpt by the ring terminal. 20A MDL type fuse inside, intact. It is just a tail, only one...
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    Tune up - Ignition Sensor?

    I am planning to perform a tune up on my 1989 5.7 engines with Thunderbolt IV ignition. I expect to replace the cap and rotor, plugs and probably wires. I have not yet dismantled the distributors the inspect the ignition sensors. Assuming there are no signs of deterioration, should they be replaced?
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    Old paint removal

    Greetings All. My boat is a 1989 Sea Ray 270 Amberjack. I'm afraid do not have any properly formatted photos to show but I will work on that if it becomes important. The previous owner banished the original forest green colour scheme with the exception of the cockpit dashboard. Said green dash...
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    Exhaust flapper issue

    Prior to this past season I replaced the old style exhaust flappers with the modern version on my 1989 5.7 engines. I used OEM parts. At that time they moved freely and closed firmly, as designed. I have now discovered that at least one set are not closing completely, leaving a gap for possible...
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    Bell housing removal

    I'd like to remove my Alpha 1 gen 1 Bell housing to clean/paint. Is it likely that the bellows will be damaged in the process?
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    Engine oil extraction

    I cannot reach the engine oil drains on my twin 1989 5.7 Mercruisers. What are my options to change the oil? They are equipped with remote filters. I am aware of pumping the oil out through the dipstick but have no experience with this. Is this an effective method? I appreciate your expertise.
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