Page 1 of 3 1 2 3 LastLast
Results 1 to 10 of 29
  1. #1
    ph2ocraft's Avatar
    Join Date
    Apr 2006
    Location
    Campbell, Ca.
    Posts
    14,100
    +1
    105

    Matrix Down, Matrix Down

    Well boys I guess I was enjoying myself too much and thought everything was perfect. From the looks of things I was waaaayyyyyy wrong. An hour into a 45MPH cruise I lost throttle response, then power went down the tubes quick. Kevin and myself made the 31/2 hour 5MPH cruise back to home base.
    I had one bad reed in the center cylinder but it shouldn't have caused the non rev condition, I pulled the domes after checking compression and this is what I saw.
    Piston wash was showing a little lean 2 weeks ago but with 10 gallons of VP110 it usually does just fine. Pre-mix was 32:1

    Suggestions, comments??











  2. #2
    Moderator Insanediego Joe's Avatar
    Join Date
    Mar 2006
    Location
    San Diego, California, United States
    Posts
    5,885
    +1
    142
    Sure looks like the ring made it around the pin on the piston and turned and snagged on the exhaust port. That sucks big time.

  3. #3
    06Busa's Avatar
    Join Date
    Aug 2005
    Location
    Joliet,IL
    Posts
    193
    Sorry to hear that.

  4. #4
    Connecticut CrazyA's Avatar
    Join Date
    Nov 2005
    Location
    CT.
    Posts
    8,134
    +1
    1,050
    That blows Dude!!! Well, obliviously you have to tear her down, so at least we'll have a better looksy then.
    Things to check:

    Broken ring ends
    Dislodged piston ring centering pin
    Small and big end connecting rod needle bearings
    Screws on your V-Force reeds (?)

    Also, what accomodations were made for that front oil port when you went to premix, if any? (see pic)
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	DSC01221.JPG 
Views:	87 
Size:	96.6 KB 
ID:	7275  

  5. #5
    Moderator RX951's Avatar
    Join Date
    Apr 2005
    Location
    League City, Texas
    Posts
    16,066
    +1
    23
    dang...sorry to hear

    but on the positive note, it can be fixed

  6. #6
    Sorry to see that Al!

  7. #7
    javiert99's Avatar
    Join Date
    Aug 2006
    Location
    Jupiter, FL
    Posts
    374
    Ouch! Looks familiar!

  8. #8
    Is that oil port like the crank shaft on a sled should that get a grease fitting when you take the oil injection off??

  9. #9
    Banned User
    Join Date
    Aug 2006
    Posts
    1,236
    Quote Originally Posted by javiert99
    Ouch! Looks familiar!
    Yah, looks like an SBT piston.

  10. #10
    ph2ocraft's Avatar
    Join Date
    Apr 2006
    Location
    Campbell, Ca.
    Posts
    14,100
    +1
    105
    I've inquired about the removed lubrication line and here it is in a nutshell.
    The injected engine recieves lubrication from the top of the engine through the injectors so lubrication to the crank area is weak, hence the added lubrication port to the crank for the injected engines.

    Since pre-mixing the engine, all lubrication is done through the lower half of the engine via the carburetors so there is plenty of lubrication to the crank and everywhere else.

    It's not a concern when switching to pre-mix as long as it's carbureted as with the Matrix.

Page 1 of 3 1 2 3 LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. NEED HELP URGENT(HULK) RXP DOWN
    By macattack in forum 4-Tec Performance
    Replies: 28
    Last Post: 11-22-2005, 02:39 PM
  2. I broke down and got a Garmin Etrex
    By BertInTexas in forum 4-Tec Performance
    Replies: 14
    Last Post: 07-25-2005, 09:02 PM
  3. Quick and easy,down and dirty,cold air for the RXT
    By SKR8PN in forum 4-Tec Performance
    Replies: 15
    Last Post: 07-03-2005, 06:48 PM
  4. A little OT: why do my tie-downs keep coming loose?
    By ToeSurf in forum Sea Doo Open Discussion
    Replies: 8
    Last Post: 07-01-2005, 11:40 AM
  5. RXT IS DOWN AGAIN, P-1509
    By Bullit in forum 4-Tec Performance
    Replies: 9
    Last Post: 06-04-2005, 09:06 AM

Posting Permissions

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