SBT Jetski Engines, Parts & Accessories

Results 1 to 4 of 4

Thread: Rave valves

  1. #1
    Joined
    Jun 2004
    From
    Columbus Ga.
    Posts
    16

    Post

    What should I look for when inspecting rave valves. These valves are removed from a Sea Doo challenger jet boat.
    The problem I am having is it seems to be starved for fuel at high RPMs.
    One thing I have noticed is at high RPM ,with the air cleaner removed , there is a LOT of fuel being blown out of one carb.
    The rotary valve is in good condition,but Ime not sure of the timing .
    Any Help would be greatly appreciated.
    Thanks.

  2. #2
    Joined
    Mar 2003
    From
    SBT
    Posts
    21,545

    Post

    The Rave valves should be clean and move freely. They do not have anything to do with the carb issue you are having. The rotary valve if it is in good condition and does not have any deep scratches or gouges should not cause this problem. The timing is the only thing that would cause this. This is also assuming that you have good rotary valve to rotary vlave cover clearance.
    SBT Tech Support is here to help with your problems.
    We try to answer each question quickly and accurately.
    Please do not use Private Messaging for Tech Support, use the forums.

  3. #3
    Joined
    Jun 2004
    From
    Columbus Ga.
    Posts
    16

    Post

    Thanks for you r quick reply. I will ck the timing.
    I have 2 rave valves . when i move the valves up and down one valve seems to move a whole lot more air in and out of the small hole . Close inspection of the bellows does not show holes or cracks.
    The large loss of air from one seems to come from the valve guide. Is this normal.
    Thanks.

  4. #4
    Joined
    Feb 2001
    From
    Glendora, Ca.
    Posts
    5,204

    Post

    All carbs have what most people "think" is excessve blow back, but if the rotary valve drive gear is stripped, it will really have a bunch of blowback. The technical term is "reversion"..... The ignition timing is fixed. That is probably not your problem. I'd be checking the RV timing..........
    Bill O'Neal WCM
    <a href="http://www.watercraftmagic.com" target="_blank">www.watercraftmagic.com</a>

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Breaking RAVE valves, melting RAVE caps
    By rykohl in forum Sea-Doo
    Replies: 15
    Last Post: 07-15-2007, 04:45 PM
  2. RAVE valves stuck open
    By geeps_24 in forum Sea-Doo
    Replies: 21
    Last Post: 08-27-2005, 07:46 PM
  3. SBT 951 Rave Valves
    By eclipse in forum Sea-Doo
    Replies: 6
    Last Post: 01-03-2005, 04:59 PM
  4. Rave Valves
    By gtxgti in forum Sea-Doo
    Replies: 1
    Last Post: 08-05-2004, 02:12 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
  •