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    Installed shift cable, should prop spin free in reverse?

    MC1 drives here. I’m reassembling after a motor out transom rebuild. I also had my drives rebuilt. I bought rebuilt transom assemblies, and I just reassembled and installed the shift cable. Everything seemed to go together by the directions and when I put the shift lever in forward gear, the...
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    Installing Rebuilt trim cylinders and all new lines

    Its been awhile since I posted but I am restoring a Bertram 25 with twin 165's. I had the outdrives rebuilt, I bought rebuilt transom assemblies, and I have all of that in and am in the process of installing the hydraulics. I found all the specs on the o-rings and did a full rebuild of the...
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    MC-1 165's. Drive install gasket question

    The manual, written in 1980 or whatever, says to use adhesive to hold in the o-ring and to install the paper gasket dry. Is that still conventional wisdom? The drives and transom assemblies have been rebuilt and freshly painted so they are clean and flat. 1974 Bertram 25, Twin 165's (replaced...
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    MC1 Gimble housing water tube smashed

    I'm monkeying with getting my motors lined up, im thinking that one of them is not in correctly and I realized that the shop that "installed" my motors also pinched a ground wire and smashed this Gimble housing water tube. I can see from the parts catalog that the tube runs THROUGH the transom...
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    Mercruiser 165's First Engine Align, Having Trouble

    1974 Bertram 25. Twin Inline 6 Mercruiser 165's. I had the motors pulled to redo the transom and now the engines are back in -- I'm trying to align them myself for the first time. I'm struggling. One I have pretty close. On the port side I can slip in the alignment tool in until it is...
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    MC-1 Cylinder Rebuild Questions

    My transom assemblies are in, motors being installed this week and I will start re-rigging this Boat soon. I pulled the rams, which were working, out of a box and decided to consider re-sealing them and cosmetically refurbishing them. I have only pulled 1 open but in this first case the...
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    MC-1 transom + cork gasket, to seal or not to seal?

    I have finally gotten to a re-assembly point after removing the rotted core and replacing with Coosa on my 1972 Bertram 25 with Mercruiser 165 L6's. I have rebuilt transom assemblies and I am getting ready to re-install them. The rebuilder that sold me the transom assemblies included tubes...
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    165 L6 Bushings need replacement?

    I'm getting ready to re-install my MC165's in a '72 Bertram. While everything is out I think it might be a good time to ensure the engine mounts are dampening properly. There are 2 rear bushings and 1 front bushing per engine. Plus a few thick rubber washers. The bushings don't seem to...
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    Twin Mercruiser L6's '74 165's now 292

    I have finally, after a year, gotten my outdrives back after their rebuild. I have rebuilt transom assemblies to install in my newly rebuilt transom. Now I'm going through the engines before reinstalling everything. Compression was good on both engines. Already replaced risers and manifolds...
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    Drive Rebuilder Can't get parts, since November, May get Alpha for L6's

    I sent my 2 MC-1 (1972 165 L6's) drives to a rebuilder for a pretty penny in November. After many months of accepting excuses I'm still in a position where he apparently still can't get parts, or he is broke and lying. I've decided not to wait any longer and to try and get my money back. I...
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    L6 Mercruiser simplified engine wiring

    I'm planning a complete re-wire on my 25 Bertram. It has Twin Mercruiser L6's and Ill be clean sheeting the electrical system since all wiring has been removed from the boat. the original harnesses have a 6-ish gauge power wire that ran to an ammeter for each engine and then the house loads...
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    1972 L6 remote controls need wiring repair

    I have removed every bit of wiring from my '72 Bertram. I will be doing a complete re-wire and this remote control unit has frayed wiring for the start interrupt. How hard is it to get to the wiring without screwing something else up? What else should I do "while I'm in there"?
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    Instrument Replacement

    If I replace my original oil pressure and temperature gauges (1972 L6 165's) how can I tell which brands will require new senders?
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    165 L6's out of the bertram. What do they need?

    I'm replacing the transom assemblies with rebuilt units. In preparation I have pulled the engines. I plan to degrease them, paint them, replace gaskets, ( oil pan, side plate and valve cover), update them with petronix and replace the rubber motor mounts. I allready rebuilt the carbs and...
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    What is this hole a the top of my gimbal housing there for?

    gimbal - 1 by ttownthomas, on Flickr
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    mc-1 Upper housing reassembly question.

    I am re-sealing and going through my upper housings. The top cap outer bearing race and bearing rollers have corrosion and I assume I shouldn't leave them like that. (part of me thinks that based on their location they lack oil and probably have corrosion in alot of drives). If I replace the...
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    Whats the salvageability of this MC-1 upper?

    As I work through the mechanicals I decided to disassemble the uppers from my 1972 Bertram project. MC-1 165's. I watched some online videos and studied seloc and the fsm. My spanner came today so I took it apart. Got everything but the larger driveshaft seal apart. Here are the pictures...
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    Gear housing assembly interchangability?

    I'm mid restoration on a 1972 Bertram 25 with twin Mercruiser 165's. One gear housing assembly has a broken skeg and cavitation plate and now that I have striped the paint off I have found a hairline crack about 5 inches long in the housing. How interchangeable are the housings? The one that...
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    Can I use 1 larger rectangular backing plate?

    My Boat (1972 bertram 25) had 2 old through-hull transducers fairly close to each-other. I enlarged the holes and am replacing them with a new transducer and a seacock. Almost all the through hull backing plates I see are round. Is a round through hull more dependable or safe than a...
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    About to order Rebuilt MC-1 gimbal assembly. Will this work?

    I posted yesterday about my corroded Gimbal ring. I'm doing a full restoration on a Bertram 25 and am just not comfortable with the prospect of keeping these assemblies as-is (unable to be rebuilt) since they are becoming more scarce. There is a guy in TN that restores these assemblies and My...
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