(P5) vintage JS300 jetski modified motor rebuild! Kerker pipe.

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  • Опубліковано 19 чер 2024
  • Modify js300 motor assembly.
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КОМЕНТАРІ • 31

  • @BTR2018
    @BTR2018  2 роки тому +5

    Ready to rip! Who’s ready?

    • @shiftintogeargarage813
      @shiftintogeargarage813 2 роки тому +3

      Can’t wait till the water warms up

    • @BTR2018
      @BTR2018  2 роки тому +4

      @@shiftintogeargarage813 heck yeah me too🤙

  • @TomL96
    @TomL96 2 місяці тому +1

    This is my first JS300 rebuild, and your videos helped me out a lot!!! When putting the PTO/coupling on, do you have to torque it? I put mine on and when trying to start it, it comes loose and unthreads. Is the motor spinning the wrong direction?

    • @BTR2018
      @BTR2018  2 місяці тому +2

      You’re welcome glad my videos helped you. Yes you kinda have to torque it on the fis pound it with something flat hit it on where the ears stick out to torque it and put a little bit of red loctite and wait like 30 minutes

    • @TomL96
      @TomL96 Місяць тому +1

      @@BTR2018 what do you recommend for a stock carb kit replacement?

    • @BTR2018
      @BTR2018  Місяць тому +2

      @@TomL96 oem GENUINE OEM MIKUNI BN CARB CARBURETOR REBUILD KIT KAWASAKI JS300 JS 300 86-91

  • @robertpallotta5324
    @robertpallotta5324 Рік тому +1

    Do you know where I can find an exciter coil that goes on the stator plate.

    • @BTR2018
      @BTR2018  Рік тому +1

      eBay or Facebook marketplace or on the Facebook groups.

  • @TheAutoexchange
    @TheAutoexchange Рік тому +1

    What grit sand paper are you using?

  • @chinoramos9629
    @chinoramos9629 Рік тому +1

    Hey bro what kinda oil does it take in crankcase

    • @BTR2018
      @BTR2018  Рік тому +1

      It’s premixed gas with oil whatever comes out fro the gas tank. 40:1 mix ratio.

  • @thadeusmoor3535
    @thadeusmoor3535 2 роки тому +1

    Trying to find torque numbers for the case

    • @BTR2018
      @BTR2018  2 роки тому +1

      @thadeus moor
      If you wanna contact me through my Instagram I can send you the pictures from the service manual my Instagram is built.2.run.
      6mm bolt dia = 5.9 - 7.8 N-m
      0.60 - 0.80 kg-m
      52 - 69 in-lb
      Hope this helps.

  • @benschrepple8808
    @benschrepple8808 2 роки тому +1

    Where'd you get the kerker! Been trying to find one lol.

    • @BTR2018
      @BTR2018  2 роки тому +1

      I got one off of Facebook. Yes they are pretty hard to come by for a cheap price. Where are you located?

    • @benschrepple8808
      @benschrepple8808 2 роки тому +1

      @@BTR2018 im in NJ, I bought a 440 hull but kinda want to put a 300 in it.... idk if i can even figure out mounts but if i can find a kerker for a 300 that will seal the deal. Sweet video.

    • @BTR2018
      @BTR2018  2 роки тому +1

      @@benschrepple8808 all I see there’s one in Alabama but the guy doesn’t want to ship it. Lol thanks for liking the video. Currently in the garage making a pump and impeller video should be out this week Thursday. If I find a pipe I’ll definitely let you know.

    • @benschrepple8808
      @benschrepple8808 2 роки тому +1

      Im on the "everything standup jetski" facebook page, you'll see the 440 i have on there. Any ideas on mounting a 300 into a 440 body?

    • @BTR2018
      @BTR2018  2 роки тому +1

      @@benschrepple8808 Me personally I would not go to a 300 because everything it is so hard to get for them like aftermarket parts and stuff but a 440 or a 550 or a 750 swap would be much better definitely need more power for the skis Unless you already have the 300 you’ll have to buy the 300 mounts which are pretty hard to come by and kind of expensive.

  • @andysanchez7050
    @andysanchez7050 11 місяців тому +1

    Would it be better to swap out the engine for a 450 or 550 engine?

    • @BTR2018
      @BTR2018  11 місяців тому +2

      Definitely would, but always wanted to build a 300 and see what it could do.

    • @andysanchez7050
      @andysanchez7050 11 місяців тому +1

      @@BTR2018 ok awesome how much more power was gained? asking because I just got a js300 and the power is kinda lacking.

    • @BTR2018
      @BTR2018  11 місяців тому +2

      Well, let’s say this it was beating a js440 & js550s, which they were pretty much stock so this thing was pretty fast but again it’s hard to find parts for this thing like a pipe. I have a few impellers, but putting in a JS450 or 550 would be much better, or even better a 650. Which I got if you want.

    • @andysanchez7050
      @andysanchez7050 11 місяців тому +1

      @@BTR2018 well I need to upgrade to a bigger pump?

    • @BTR2018
      @BTR2018  11 місяців тому +2

      No you won’t just a different impeller/propeller