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  1. P

    Engine ID, Mercruiser 260.

    3717773 Serial number. Cant find any info back that far. Trying to figure year. Thks…
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    1997 Bravo Shift bellows

    Boat sinking, hole in shift bellows. What is method to change? Can shift cable be removed from helmet end? or does it have to be removed from engine end? Thanks
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    1992 3cyl 75hp Mercury electrical drain

    I had the stator replaced and since then, with the key off, there is a constant draw from the battery. There is a noticeable spark when I connect the battery. Anyone know what would be causing this? All else good, just need to unhook battery after each use or battery is dead next time. 1992...
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    Tach off.

    My 1979 260 Century Arabian, the tach was frozen at 2300rpm and did not move. Found a new identical tach and installed. Tried all 4 setting available and choose the one that works the best and it is reading about 400 low at idle and about 5-700 low at max. About 400 low at 2000. What could be...
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    Trim jury rig..1979 260

    In a 1979 260 which has an up trim button and to get it past the limit you need to press both the up button and the trailer button on the back at the same time. Right now neither button alone do anything but together they will trim/tilt the drive up. Adjusting the limit position sensor on the...
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    Gimbal ring, old style..

    I have a 1979 Mercruiser 260 that has the original gimbal ring with no tightening bolts. Mercruiser made a kit to replace this original model with a newer version that had two bolts at the top which could be tightened. I don't know what else was included in the kit other than a newer style...
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    1979 260 drive and TA compat

    I have an all stock 1979 Mercruiser 260 which needs a new gimbal ring. I was thinking of just replacing the entire transom assembly with a new Alpha 1, Gen 1 TA. Is the old 1979 pre-alpha drive compatible with a new TA? Will that old drive bolt right on to the new modern transom assembly? Any...
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    1992 Mercury 75hp Trim issues

    Before launching for the summer the trim up sounded(normal fast high pitched whine) fine but did not move. Trim down sounded abnormal, low pitched struggling grown and did not move. So no up or down but trim motor runs. In water with some forward momentum, trim down started to work but not up...
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    Merc Blue drain plug adapters

    Looking for the adapters to convert 1/4" brass drain plugs to fit blue merc drain plugs. Where can I buy them? Thanks
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    1992 75hp Mercury vs 90hp?

    I have a 1992 75hp 3 cyl Mercury outboard. I know the 90hp was based on the same block/basic setup. Does anybody know exactly what the difference's are between these two models? What did they change to get the extra 15hp? Carbs? I think they made a 115hp as well off this model. Thanks very...
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    Oil pressure issues Chrysler small block

    After a fresh oil/filter change I have about 45lbs of pressure using about 5.5-6 qts to fill a 1969 Chrysler small block with 4 bbl. Runs well some valve ticking/noise, not too bad, easy start, no real issues. After about every 3-4 hours of run time the valve train starts to sound louder, the...
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    New engine

    I was shopping for a new small block and I have to say MarinePowerService.com was totally unhelpful. Sat on hold forever, then they had no interest in talking, nobody makes RH engines, no suggestions, can't do that, rushed me off the phone. A total waste of time. They were terrible. FYI. Anyone...
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    Chysler/Chevy 71C compatibility?

    I have a tired 273 Chrysler with a 71C. I have a line on a cheap 350 chevy bobtail with no tranny. Could I use the 71C off the Chrysler with a much newer Chevy 350? Same rotation. What bell housing and flex plate would i need? thanks very much
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    New lifters

    I am replacing the lifters in my Chrysler 1969 273. The old ones are std size. Do i go with standard size again or +.001 Thanks
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    273 vs 318?

    I have a '69 273 with a 4bbl. If I bought a rebuilt 318 long block made for the same vintage would everything else bolt right over. Could I reuse the exhaust, intake, starter, etc? Thanks
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    What Oil??

    What oil to use in a 1969 273 inboard? Straight 30 dino? or a syn with lots of ZDDP like RPurple? Thanks
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    How hard?

    is it to change the impellers in a dual pocket Sherwood on a 1969 273. Any suggestions? Remove the pump first? I guess there are two impellers in there so I need to get two? Any knowledge helpful, first timer on one of these style pumps, many times on others. Thanks
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    Valve train noise

    I have a well running 273 with hydraulic lifters, rocker shaft assembly with stamped non-adjustable rockers. So the push rods should be fairly tight against the rockers when unloaded, just able to spin them when cold. I found a couple were looser than this therefore making some ticking noise...
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    Engine ID, thanks

    I have a Chrysler 273 I believe. Trying to determine the year so I can purchase the correct manual. On ID Plate on Bellhousing M273-BWR10-288 E066754 or E066254 cant read that 5th digit clearly. 12-16-P Velvet drive tranny- AS1-71C 64273 Casting # on port side of engine 2806030 Thanks very...
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