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  1. 8

    MC1 drive installation

    I have a MC1 1979 outdrive. After basically rebuilding my boat, engine, transom stringers, cables, bellows, etc. I am now putting the outdrive back on! I know, its October! I aligned the engine and it came out really well. checked after torqued front mounts also. The drive is on all the way...
  2. 8

    Where is terminal block to mount trim sender wires

    MC1 1979. I have replaced my trim sender and trim limit units. it has been a year since I took my engine out with wiring harness etc. I cant remember where the trim sender wires mount.
  3. 8

    shift interrupter switch and some other wiring issues.

    I have a 1979 MC 1 transom plate and outdrive. I have installed a 1995 Alpha 350 engine. I have the wiring diagram for the thunderbolt 4 ignition. I see that the interrupter switch basically connects ground to the coil, when the y plate is activated. When I do a continuity test by touching...
  4. 8

    Which power steering fluid? and what year of Mercruiser engine?

    Serial # OF295214 350 MAG Alpha I thought this was a 1995, but it has Thunderbolt IV, which I read was used up to 1994. What year does this serial # match up to? Is Dextron III the correct power steering fluid? thanks
  5. 8

    Alignment Problem Grease Marks on port side

    1979 MC1 drive Merc 350 engine transom was rebuilt and stringers replaced I have been trying to align my engine all day. In and out of the boat 100 times. I have read the posted info. on alignment and saw videos. I keep getting difficult insertion of align. bar, needing some heel of my hand...
  6. 8

    Shift cable routing

    MC 1 drive with merc 350 Is there a best way to route the shift cable once it passes through the transom plate? if I route the cable over the starboard side y pipe, between the pipe and the bell housing, it seems to work but their is a big loop of shift cable back in the transom area. Is their...
  7. 8

    Engine Alignment Question

    Merc 5.7 MC 1 outdrive I have read the adults only section on engine alignment. I am trying to understand what is happening when you put the alingment bar just into the coupler and bump the bar end to "set the gimbal bearing to align with the coupler". I know when installing the gimbal...
  8. 8

    Old wiring diagram......dumb question

    I have a 1979 century boat with an old wiring diagram in the owners packet. It refers to a dash gauge as a "battery meter". My boat has a voltmeter. Is this the same thing ? Could this refer to an ammeter? thanks
  9. 8

    Engine alignment diagram

    I am looking for a diagram I saw somewhere that shows the specs for engine installation for an alpha gen 1 setup. the diagram shows the centerline of the crankshaft, how high it is above front and rear engine mounts, distance between mounts etc. Anyone know where I can find this? thanks Ed
  10. 8

    Water hose inlet on wrong side

    Hi, 1979 Merc 228 #1 outdrive. The original engine had the power steering cooler on the starboard engine side, which is where the water hose inlet through the transom is aimed. I am installing a 1996 350 mag engine and this newer engine has the ps cooler on the port side. Is their a...
  11. 8

    Installing an aluminum gas tank

    I have done some stringer repair on my boat and one side of the center stringer is at a little bit of an angle, making a slight V toward the bottom. My aluminum gas tank .090" thick fits in, but the bottom of the tank on one side touches the stringer. This tank is rectangular 55" long, 22 1/8"...
  12. 8

    installing gimble housing....how critical is the level of the rear motor mounts?

    1979 mercruiser 228 #1 drive. I have just installed my gimble housing and transom plate. I am in the process of torquing the bolts. the drive is 1/8" out of level (compared to level of the boat). is this important enough to un-torque and try to level out? thanks!
  13. 8

    Gimbal Housing seal question

    I am getting ready to install my Gimbal Housing (1979 #1 Drive Merc 228). I have the outside seal and just noticed another seal shown in a parts diagram. Merc Part # 41802. Is this a seal to the exhaust pipe Y ? or am I missing something? My Y has a large circular O ring and 2 smaller O...
  14. 8

    Which type of expanding foam?

    I have done some stringer and deck repair and want to apply some insulating/flotation foam. I tried some with a 4lb rating but it did not expand nearly as much as I anticipated. Which foam is recommened for filling voids between hull and decking. I hope to gain flotation, sound reduction...
  15. 8

    Drain plug help needed

    I have replaced the transom on my 79 century 3000. My old transom setup had just the outside brass fitting with three screws that attached from the outside. Resin was used to seal the transom wood through to the inside. No tube. Is there a brass fitting that can attach the same way, with a...
  16. 8

    Need thread size to make a puller to remove upper gimbal swivel

    Mc 1 drive 52098927. this has the square bottom and splined top on the gimbal ring upper pin. I am trying to thread the bottom of the pin and its pretty rusty inside.......thread size and I will try to run a tap help appreciated
  17. 8

    Can I take apart and re-use u-joint bellows?

    I have a pre-alpha outdrive that I had installed new u-joint, and shift cable bellows. They have never seen water. I have to take the bell housing off due to a previously unknown gimble ring problem. Will bellows adhesive let go without damaging bellows? help appreciated!
  18. 8

    Steering lever hitting one side of gimbal housing

    I have a 1979 Century with a 228 Mercruiser transom setup. My boat always has turned left a lot sharper than right. In fact, the engine used to stall a lot while docking if you turned the steering wheel too far to turn right. I actually posted about this a year ago. Well with the engine out...
  19. 8

    Wiring problem on 350 mag Mercruiser Thunderbolt 4 (module on distributor)

    I am repowering a 1979 century that originally came with a Merc 228 set up. I am using a 1995 350 Mag to repower. The cannon plug on the engine does not match the cannon plug on the boat side. The new engine has a 10 pins, the old set up 9 pins. They do plug into each other. I have been...
  20. 8

    Gimbal Housing seal on #1 outdrive

    (1979 Mercruiser 228) I looked up the part on a drawing and the drawing shows a flat, gasket in the shape of the gimbal housing. The part #6533A1 matches up with a seal that looks black and unshaped, in a loop. Does this sound correct? Is anyone familiar with this seal/gasket and how it is...
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