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  1. SSTKO81

    Chattering in out drive

    I don’t have a thermostat installed on the engine, never have; it’s not right, but it’s never been an issue. I bring up the water tube because it’s happened before. When installing, the copper tube ends up being pushed too far up into the upper and doesn’t seat properly in the impeller housing...
  2. SSTKO81

    Chattering in out drive

    Well the good news today is that system pressure tested well, went back together; the engine started and she purred like a clatter-free kitten. The bad news is that my water impeller is not impelling. Gauge ran up to 180 and I shut her down. Maybe the water tube didn’t Seat properly when I put...
  3. SSTKO81

    Chattering in out drive

    That would figure BUT the whole lower was replaced about 8 years ago so maybe I’ll be okay for a while
  4. SSTKO81

    Chattering in out drive

    You can really find great deals on them if you take the time to look around. I’ve got everything put back together now. I’ll pressure test the top and bottom individually, then the two halves back together. -hope to be back on the water by next week
  5. SSTKO81

    Chattering in out drive

    Not, just top end
  6. SSTKO81

    Chattering in out drive

    I did a lot of part number cross referencing and found deals on eBay. This got all the gears, bearings, all the internals. I did have to take my bearings to a shop to have them pressed on, so I’m not counting that. I actually put together a spreadsheet with Sierra # references if you’d like me...
  7. SSTKO81

    Chattering in out drive

    I got out cheep. Just over 300 for everything including oil, seals, tools and all.
  8. SSTKO81

    Chattering in out drive

    I’ve opted to repair. Every bearing, seal and gear has been replaced. Preload is set and it will go back together today. A little oil and luck; we should be back on the water soon
  9. SSTKO81

    Chattering in out drive

    Updated photos. Looks like the gears grenaded, most likely due to lower bearing failure. I’m gonna have to rebuild the whole stinking thing.
  10. SSTKO81

    Chattering in out drive

    I received the replacement NOS mercruiser cap and bearing set with shims last night. I came with good illustrations and specs for setting preload and assembly. -looks like quite a process but it’s a long weekend so I’ve got time. I’ll follow up
  11. SSTKO81

    Chattering in out drive

  12. SSTKO81

    Chattering in out drive

    I’ll invest in a dial toque wrench -good to have anyway… I have a manual as well so I’ll dig into it. This is actually, I believe a Pre-alpha 81-82 vintage
  13. SSTKO81

    Chattering in out drive

  14. SSTKO81

    Chattering in out drive

    Any crash course advise on how to check/set preload?
  15. SSTKO81

    Chattering in out drive

    I live life dangerously. LOL Just an update here. I pulled the outdrive tonight and found everything to initially look good. Gimbal bearing is nice and smooth, no play. U joints are tight and well greased. No signs of water intrusion (corrosion) that would suggest the bellows were leaking or the...
  16. SSTKO81

    Chattering in out drive

    I'll add here, that my understanding is that the gears themselves are pretty damn tough, and its odd to have them damage themselves especially under light duty and good lubrication. I'm leaning toward some kind of bearing failure. I'll update here once i've got it figured out.
  17. SSTKO81

    Chattering in out drive

    As usual Bondo, I'm afraid i'm gonna have to agree with you. Fact is you just don't know what the damage is until you taker her apart and check it out. -guess I know what I'll be doing in my spare time this week.
  18. SSTKO81

    Chattering in out drive

    Turns really very smoothly. The oil level is just as shown in the picture which looks good. No signs of water. It’s been a couple years since the gimbal was changed or checked, so I suppose that’s possible. U joints were checked at that time as well and they were good. The shimmer in the oil is...
  19. SSTKO81

    Chattering in out drive

    It was trimmed almost all the way down. No rotation or bouncing of the prop and it would free spin while the motor was running. I’ve run into the issue with the dog clutch bouncing like that before and that doesn’t seem to be the case here. Based on the photos I assume it has plenty of oil and...
  20. SSTKO81

    Chattering in out drive

    Well its that time of year again. And no time like the present to find out what's going to fail this year... Luckily this time it showed its ugly face before I got on the water. While testing the motor for the first time on the muffs this season, it started and ran beautifully for about a...
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