Search results

  1. T

    What is this hole a the top of my gimbal housing there for?

    gimbal - 1 by ttownthomas, on Flickr
  2. T

    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...
  3. T

    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...
  4. T

    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...
  5. T

    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...
  6. T

    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...
  7. T

    MC-1 Gimbal ring removal woes

    I'm taking apart (in order to restore it) my gimbal assembly (1972 L6 165 Mecruiser) and the FSM says there is an allen head pipe plug here at the top of the gimbal ring. I can see the remnants of something here but whatever it is has corroded measurably. What size allen head is this hole...
  8. T

    Eastern nc mechanic recomendation

    I’m restoring a 1972 Bertram with L6 165’s. I’ve already replaced the manifolds, risers, upgraded to alpha trim pumps, rebuilt the carburetor‘s, done a bunch of wiring work. I’m anxious to start working on the cosmetic parts of the restoration so I can actually have this thing ready for the...
  9. T

    Missing parts in both 2CG carburetors on my Mercruiser L6 165

    I'm rebuilding my carbs but there is a part that is showing on the diagram that is missing from both my carbs. It is part number 39 here: ​ Any Idea if this is normal or if I can do without it 1972 Bertram, Twin 165 L6's Back to restoration after a 3 month detour
  10. T

    Recommendations for replacement multimeter

    I've had this sun-pro/actron multimeter for about 25 years. Always worked well. Has been left in the rain at least once and dropped a couple of times but as a of a few weeks ago it seemed to be working correctly measuring RPM. Now all of a sudden RPM is way off and dwell reads right at .60 no...
  11. T

    Should I re-wire my engine harness?

    The wiring on my boat is mostly original. (Twin Mercruiser 165 L6's). The wire on the motor side of the cannon harness has been obviously fiddled with as it is not nearly as tidy as a factory install. Due to a running issue I am getting ready to replace the resistor wire back to the cannon...
  12. T

    Can't get starboard engine to run after a bunch of work.

    I am restoring a 1972 Bertram 25 with twin Mercruiser 165 L6's. I recently ran all new fuel plumbing from the tank to the engines and removed the mechanical steering and replaced with hydraulic (mostly done). Replaced old trim pumps with alpha pumps and relocated them into a forward area and...
  13. T

    Mercathode System removed. How to I tell if it works?

    In order to clean up and re-organize my engine compartment I removed the mercathode system from my boat. I disconnected the wires and boxed it up. Now that i am starting to put things back together I am wondering how I can test its function. Might as well reinstall it if it works right?
  14. T

    Should I reuse these old fuel water separators?

    I'm re-doing my fuel lines and am moving my fuel/water separators. Is there any reason not to re-use these old housings? Is all the magic done inside the housing or is it the filter itself that matters?
  15. T

    MC-1 trim pumps replaced with alpha 1 pumps

    Upgraded MC-1 trim pumps to Alpha 1 pumps The hardest part was getting the hydraulic lines through the transom
  16. T

    25 Bertram Backyard Refit. Do I want 3 batteries? Do I need Three?

    I'm doing a DIY Refit on a 1972 Bertram(Twin L6 Sterndrives, MC-1 Drives). My first order of business was to get the machinery in order which I'm working through. I have done some engine work and some fuel system work and I'm moving my way back and I'm onto the drives and steering. I decided to...
  17. T

    MC-1 165’s seastar install hangup

    I’m replacing my cable driven mechanical steering with sea star hydraulic steering. The ram is supposed to thre hread onto the support tube to install it but when I try to fit it up the reverse lock solenoid assembly is in the Way. As a result I can’t line it up straight enough to install it.
  18. T

    Fuel Line tubing size? Mercruiser 165 L6.

    I have a 1972 Bertram with twin 165's. Can anyone tell me the tubing size used for the hard fuel lines from the fuel pump to the carburetor? The rubber lines on mine are shot and I have the tools to make up some hard likes similar to the factory original ones but I don't know what size line to...
  19. T

    Looks like I ended up with 292's instead of 250's!

    Thanks to Kenner for noticing this on another thread. I knew this new-to-me project boat had rebuilt jasper long blocks from a number of years ago. What I did not know was they put 292's in in instead of simply replacing the 250's. All this is assuming my internet research is correct...
  20. T

    Mercruiser 165 L6, Fuel pump leaking fuel.

    I'm in the process of nursing these 165's back to health. I have replaced the manifolds and risers, cleaned the carbs and finally got the stbd motor running without leaking water. The lack of water allowed me to notice a very large fuel leak. I was planning to replace the fuel lines and all...
Top