Page 1 of 3 1 2 3 LastLast
Results 1 to 10 of 27
  1. #1
    YamahaManny's Avatar
    Join Date
    Feb 2012
    Location
    Connecticut
    Posts
    503
    +1
    20

    Are these the Good SeaDoo Exhaust Valves??

    I have an 06 4-Tec motor that I'm planning to drop into my GPRXP project Ski and wanted to make sure it didn't have the BAD valves in it.

    Here is a pic of the top of the exhaust valve stem



    The number is: 75219???


  2. #2
    YamahaManny's Avatar
    Join Date
    Feb 2012
    Location
    Connecticut
    Posts
    503
    +1
    20
    A closer look at Valve numbers:


  3. #3
    To much is never enough Badvgood's Avatar
    Join Date
    Jun 2012
    Posts
    699
    +1
    31
    Number starting with 75 is the later, better ones.

    IMO No stock valve is great and would always upgrade when doing a head job.

    Ones starting 72 are the early ones.

  4. #4
    SuperCharged67's Avatar
    Join Date
    Jun 2012
    Location
    Halifax, NS, Canada
    Posts
    1,962
    +1
    76
    I wouldn't highly mod a ski with stock valves regardless of year

  5. +1 by:


  6. #5
    Matatan tocullo's Avatar
    Join Date
    Nov 2010
    Location
    VISTA AL RIO FL
    Posts
    1,725
    +1
    69
    Look at the exhaust valves those are the ones prone to corrode and snap... Make sure they start with a 75, the intake ones might start with a 72 but that's fine. I ran my ski for over a hundred hours with out problems, 20 of those hours were at over 15lb boost and over 8800rpms.

  7. #6
    Matatan tocullo's Avatar
    Join Date
    Nov 2010
    Location
    VISTA AL RIO FL
    Posts
    1,725
    +1
    69
    Quote Originally Posted by SuperCharged67 View Post
    I wouldn't highly mod a ski with stock valves regardless of year
    The new stock valves can handle a lot, if you have the money to get lighter ones go for it but no need!

  8. +1 by:


  9. #7
    SuperCharged67's Avatar
    Join Date
    Jun 2012
    Location
    Halifax, NS, Canada
    Posts
    1,962
    +1
    76
    Quote Originally Posted by tocullo View Post
    Quote Originally Posted by SuperCharged67 View Post
    I wouldn't highly mod a ski with stock valves regardless of year
    The new stock valves can handle a lot, if you have the money to get lighter ones go for it but no need!
    I don't know it seems like a little cost for such a huge reliability improvement. Not only that it's a huge selling feature to informed buyers when selling the ski.

  10. #8
    brendanm's Avatar
    Join Date
    Jan 2013
    Location
    Gold Coast, Australia
    Posts
    738
    +1
    149
    Its only a reliability concern on the skis with the sodium filled valves, the later ones seem fine. Heaps of guys seem to be running stock valves no problem.

  11. #9
    imp0ster's Avatar
    Join Date
    Dec 2011
    Location
    Palm Harbor, FL
    Posts
    5,038
    +1
    672
    Tocullo is absolutely right. Supertechs are far better, but are you going to trash a newer style valve? Doubt it. They're just fine. Once you start heading over 8700RPMs then it's time to start looking at Ferra or Supertech. Supertech is my option.

    http://www.4-tecperformance.com/inde...oducts_id=2114

  12. #10

    Join Date
    Jul 2005
    Location
    euxton nr chorley lancashire, england
    Posts
    1,500
    +1
    1
    the 04 05 hollow valves are fine till they corrode thru not winterizing propley

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. Are these any good?
    By Mr. Matrix in forum Polaris Open Discussion
    Replies: 20
    Last Post: 09-09-2014, 02:47 PM
  2. Which way up do the Pro 785 exhaust valves go in??
    By wayneb2510 in forum Polaris Projects
    Replies: 2
    Last Post: 06-23-2013, 06:12 AM
  3. wtb: set of good used exhaust valves
    By Louis914 in forum Sea Doo Classifieds
    Replies: 1
    Last Post: 06-11-2009, 05:37 PM
  4. Are these the correct reeds? Pics inside
    By ryanbgb22 in forum Polaris Open Discussion
    Replies: 8
    Last Post: 05-23-2008, 08:52 PM
  5. Are these the hoses i am to put the clamps on
    By Jrsrxp in forum 4-Tec Performance
    Replies: 11
    Last Post: 05-24-2005, 07:57 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
  •