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  1. #1
    bkweld's Avatar
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    seal pump assembly

    I will need to change prop as soon as riva finially releases 160mm prop for sho.
    do i need to seal current assembly w/ silicone?
    would using grease or antisize for now be stupid?
    what's the best way clean off silicon?


  2. #2
    lets race.... mikeFZR's Avatar
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    Some people don't seal their pumps because they take them on and off so frequently but I use threebond 1211 to seal mine. It is pretty strong stuff and it stays flexable. Yamaha recommends threebond 1194 which is about the same as 1211. Don't seal the pump with antisieze or with grease. It's OK to run the pump without it being sealed, you might have a little more cavitation though. The only place you use antisieze is on the threads of the drive shaft where the prop screws onto it so it doesn't weld together. The only place you use grease is on the splines of the drive shaft.

    I typically can scrape the majority of the silicon off with a utility knife. I have never had to use a solution to get it off but acetone will work.

    Riva sells 1211 so you can pick it up there since your so close.

  3. #3
    bkweld's Avatar
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    Since i'll be removing pump soon I decided to use anti seize for now. I'm more concerned about corrosion even though i'm running in fresh and a little concered about possible erosion going with no sealant. Since mating surfaces are at prop aft, i'm less concered about cavitation.
    Here's the description of Anti seize pasted from their website: Anti Seize Compound, Copper, 1-Oz. Tube, Size/Net Weight 1 oz, Temp Range -30 to 1800 F, Flash Point Greater Than 200 F, Specific Gravity 1.30, Contains No VOC, Film Type Paste, Eases Assembly and Disassembly of Metal Parts, Lubricates and Protects Metal Parts from Rust, Corrosion, Galling and Seizing on High Temperature Applications, K Value 0.16, Standards

  4. #4
    philip_gpr's Avatar
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    I wouldn't use anything

    But if you must use something, use 1211 (that was a good idea)

  5. #5
    Quote Originally Posted by philip_gpr View Post
    I wouldn't use anything

    But if you must use something, use 1211 (that was a good idea)
    why?

    I`m not int the habit of removing the pump assy everyweekend. (althought lately I`v e been trying dif props) most of the time it will stay together all season unless I`m doing work or changing the set-up...
    I`ve tried various silicones and 1211. Currently I use CRL or Dow Clear silicone, just a smear and it bonds well...

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