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  1. yorab

    1963 75hp Tach Setting

    Motor in signature with battery-distributor ignition. Tach reads signal from ignition coil. What should the setting on the back of the tach be at? If the brand makes a difference, I'll find out tomorrow what it is. Thanks.
  2. yorab

    1963 75hp Electric Shift Prop

    Motor in signature. I've done some research on the forum and read that the 10X9 1/4 is a good prop for a good holeshot. I ordered the Michigan Wheel PJ-74 which cross references to the OMC part #379260. I noticed that the hub is different than the hubs on my other props. I know that the hub...
  3. yorab

    1963 75hp Running Without Cowl

    I'm gonna try to break in my motor tomorrow, but I haven't finished painting my cowl yet. Are there any issues with running a motor without the cowl? I'll be on a calm lake, so big swells and waves won't be an issue.
  4. yorab

    1963 75hp Rebuild: Success!!! (Sort Of)

    Long post. Please bear with me. More than 3 1/2 years into this, I've finally seen it run again! Here's a link: http://www.flickr.com/photos/jmm741/5651463647/in/photostream I eventually got it running relatively smoothly, but the camera battery died so no video of that. I did have a few...
  5. yorab

    Resolved: 1963 75hp Hot Starter

    Motor in signature. Motor has been recently rebuilt. I did not get around to replacing the wiring though. Before the rebuild, the starter seemed to work well. Never had a problem with the starter. A few days ago, I tried to run a compression test but I couldn't get through it because it...
  6. yorab

    1963 75hp Link & Sync Not Working

    I've followed the manual exactly--three times--but I'm still having a problem. The first step is to move the distributor to full advance and make sure that the inside edge of the throttle control shaft arm lines up with the triangular projection on the control shaft bracket. I've done that...
  7. yorab

    1963 75hp Prop Thrust Washer

    EDIT prop washer #304576 EDIT. These fit my motor as well as many other 1960's models. I may have lost mine and need one ASAP. No local boat shops, so I'd have to order and wait days for snail mail. However, there are plenty of industrial supply shops here. If I knew the dimensions, I'm...
  8. yorab

    1963 75hp Carb Adjustment During Break-In

    Motor in signature. I hope to have the break-in done in the next few days. The motor has been completely rebuilt. My manual says to set the carb's slow speed needles to 1 1/4 turns out from seated as a first adjustment. Then do the whole "lean it until it coughs then enrichen until it's...
  9. yorab

    1963 75hp Compression Issues

    Motor in signature. The motor has been completely rebuilt. Some time ago, I tried to test compression while the block was on my bench using a Lisle gauge borrowed from Pepboys. The values were all over the place, but I chalked it up to error due to turning the flywheel very erratically by...
  10. yorab

    1963 75hp Steering Friction and Tilt Shaft

    Hello. Motor in signature. How tight should the steering friction be? I'm not looking for an exact torque value because that wouldn't really apply here; just some info on what would happen if it were too loose or what would happen if it were too tight. Is there a rule of thumb for that...
  11. yorab

    1963 75hp Near Disaster with Rebuild

    Long story but I need to vent and I'd like to have some confirmation on a couple of things. Have you ever done something that you know you shouldn't be doing, but for some reason you do it anyway? That happened to me today--three times. After a complete rebuild, I was ready to run a...
  12. yorab

    1963 75hp Link N Sync

    Motor in signature. I completed the link n sync procedure according to my OMC manual. I see that the distributor reaches full advance when the throttle plate is about half way open or so. When the throttle is advanced to fully open and the throttle arm hits its stop at the carb, the...
  13. yorab

    Prop Repair

    Hello. Motor in signature. I have three of the four OMC recommended props for my motor. However, some are getting nicked up at the edges. Are there shops that repair these? Should I have the hubs replaced? I don't know how old these props are--they came with the motor. I guess I'm just...
  14. yorab

    Resolved: 1963 75hp Electric Shift Wires

    I'm trying to thread my elec. shift wires through the plate in the exhaust tube now. However, I'm having a problem. The inner cover plate won't get into position due to the inlet water tube being too close to the cover plate. At least that's what I believe is happening. I've attached a few...
  15. yorab

    1963/1961 75hp Flywheel Compatibility

    Hello. I have the motor in my signature and my parts motor is a 1961. The flywheels are different between the two motors, but not by much as far as I can tell. The 1961 flywheel is #580326 and my 1963 flywheel is #580398. The difference seems to be the height of the flywheel. One is a bit...
  16. yorab

    Resolved: 1963 75hp Flywheel Nut Tightening

    Hello. I need to tighten down my flywheel nut to spec which is 70-85 ft-lbs. When I removed it, I used a box end wrench. I put a couple of grade 8 bolts into the threaded holes and wedged a heavy prybar between those bolts while I used the wrench to loosen the nut. Now I need to replace the...
  17. yorab

    Plugs For Rebuilt 1963 75hp

    I've read on some previous posts that the 1963 75hp V4 can use a J4C or a J6C plug. The J6C plug should be used when continuous low-speed operation is expected. Is this correct? Which one should I go with for a freshly rebuilt motor? Should I go with one type of plug in the beginning and...
  18. yorab

    Hose Routing Early '60s 75hp

    Can anybody confirm where the hoses from these connectors go to? One connector is on the port side of the adapter plate. The other is on the front port side of the crankcase. I have a ton of pics but none of those areas. Thanks.
  19. yorab

    1963 75hp Tstat Housing Repair Advice

    I noticed that my tstat housing is broken. Specifically, one of the three "nubs" that supports the Vernatherm has broken off. I made my own support with epoxy as seen in the pics. Sorry for the blurry pics. The original nub was very small compared to my epoxy repair, but I wanted to be sure...
  20. yorab

    Moderators: Can this be added to the Sticky?

    I've been trying to figure out how to add a large image to my posts, but I've only been able to add thumbnail views. There is a very good tutorial sticky started by Woodonglass that describes a method of adding pictures. The problem is that some of the steps don't seem to make sense since the...
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