Page 1 of 2 1 2 LastLast
Results 1 to 10 of 19
  1. #1
    espritonsevas's Avatar
    Join Date
    Dec 2007
    Location
    Miami,Fl.
    Posts
    388

    If you blow a piston, do you have to rebuild the ENTIRE motor?

    So my ski has 96 hours on it. My mechanic says that I should replace all the pistons, renickel the cylinders, get a new crank, and he says one of my carbs might be bad and probs need to fix that? I guess my question is, would it make sense and is it a bad idea to just renickel the bad cylinder, get a new piston, and keep the crank and everything else?


  2. #2
    L Carlson's Avatar
    Join Date
    Aug 2007
    Location
    Bonita Springs, Florida, United States
    Posts
    7,118
    +1
    2
    only if your mechanic wants to rip you off!Lee

  3. #3
    Greenhulk Grasshopah (DRC) HallPass's Avatar
    Join Date
    Jun 2007
    Location
    Kansas
    Posts
    5,587
    +1
    2
    Quote Originally Posted by espritonsevas View Post
    So my ski has 96 hours on it. My mechanic says that I should replace all the pistons, renickel the cylinders, get a new crank, and he says one of my carbs might be bad and probs need to fix that?
    If the other 2 pistons are fine, why replace them?

    Same with the crank. Just because you blew a piston in my opinion does not mean everything else needs to be replaced.

    You may check and have your carbs rebuilt.. see if Osidebill rebuild them for you.

    He may have a set you can swap your for those + money who knows.

    But no need to replace everything just for that..

    replace what needs to be, and fix what is wrong, and proceed.

  4. #4
    Altezza01's Avatar
    Join Date
    Jun 2007
    Location
    Destin, FL
    Posts
    1,527
    +1
    13
    if the cylinder walls aren't damaged then just rehone the cylinder, slap on a new piston and rings and break it in.

  5. #5
    Ya Boy Trevor bajaeater's Avatar
    Join Date
    Dec 2005
    Location
    Tampa
    Posts
    1,083
    +1
    19
    personally id take pics of the jugs and pistons and post them on here just to get reassurance on them.
    make sure you havent been running lean on the other two. if wash is good then fix the one jug and rebuild the carbs.

  6. #6
    philip_gpr's Avatar
    Join Date
    Dec 2005
    Location
    Canada
    Posts
    2,724
    +1
    3
    as already suggested take a picture of the tops of the pistons, the cylinder head will be off so this should be easy to do

    while you are at it look for damage on the cylinder walls

    but I suspect you may need a new mechanic, 3 new cylinders, 3 new pistons and new crank sounds a little greedy to me - the pictures will confirm this

  7. #7
    305coco's Avatar
    Join Date
    May 2007
    Location
    cape coral, florida USA
    Posts
    2,363
    +1
    55
    whos your mechanic?? if you dont mind me asking

  8. #8
    espritonsevas's Avatar
    Join Date
    Dec 2007
    Location
    Miami,Fl.
    Posts
    388
    Ok thats what I figured, I mean he just said that the weakest part in these motors is the crank and it will fail? but I hear from alot of people on this forum, the opposite, that their pushing more then 200 hrs on these motors. I dont know, I really miss being on the water, so I think i am going to try what you guys are saying.

  9. #9
    espritonsevas's Avatar
    Join Date
    Dec 2007
    Location
    Miami,Fl.
    Posts
    388
    Its kevin at florida keys marine in key largo. Honestly hes a really cool guy and worked on my old jetboat and always said right, But he said these motors only will last 150 hrs, but then I hear so many here pushing more then that so I am just so confused.

  10. #10

    Join Date
    Jan 2007
    Location
    Milwaukee, Wisconsin, United States
    Posts
    773
    +1
    1

    jug removed yet?

    post the pics or send um to phill or hydro a long time gpr vet.

    I sent mine to Tim Judge last summer.. He diagnosed it right on the head. So with out cutting your finger( like i did) Carefully remove the jug and check the ROD bearing my looking at the color and "jiggling" it.

    You don't want any slop or play in that joint / bearing between the rod and the crank. IF you have slop you may well need to have your crank repaired.


    KG

Page 1 of 2 1 2 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. If you HAVE to have the best looking......
    By Tiny in forum 4-Tec Performance
    Replies: 7
    Last Post: 07-14-2013, 05:00 AM
  2. Do you have to seal the ride plate right away??
    By ercBOOSTED in forum Kawasaki PWC Performance (4-stroke)
    Replies: 7
    Last Post: 09-19-2007, 07:03 PM
  3. How can you tell if you have gas in the oil?
    By carolinafloats in forum Kawasaki PWC Performance (4-stroke)
    Replies: 7
    Last Post: 08-31-2007, 03:41 PM
  4. Instaling my BOV do I have to use the middle notch????
    By Jrsrxp in forum 4-Tec Performance
    Replies: 11
    Last Post: 07-22-2005, 07:32 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •