Results 1 to 9 of 9

Thread: MSX Exhaust Mod

  1. #1
    Kosh's Avatar
    Join Date
    Sep 2007
    Location
    Australia
    Posts
    1,483
    +1
    83

    MSX Exhaust Mod

    Thought i would share this mod to the muffler on MSX.

    Running in salt all the time i was not happy to leave tthe water in the system.

    Did i waste my time on this.

    The tap is east to get to and serves its intended purpose, of course it is another thing to go wrong if the tap is lef open.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Poo 3 July 28.09.08 Record 186.jpg 
Views:	75 
Size:	2.55 MB 
ID:	97320  


  2. #2
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Location
    Cleveland OH
    Posts
    17,328
    +1
    29
    I would expect backflushing to eliminate salt water from the water box already. Many saltwater guys on here, and no one has ever mentioned the water box rotting away. My $.02

  3. #3
    Click avatar for tech links/info, donation request K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canada
    Posts
    36,575
    +1
    1,272
    Quote Originally Posted by xlint89 View Post
    I would expect back flushing to eliminate salt water from the water box already.
    Many saltwater guys on here, and no one has ever mentioned the water box rotting away...
    The water that gets into the waterbox comes from the exhaust water injection spray.

    The exhaust water injection is not a high flow water feed when running on the hose, so it is not going to flush all the salt water out of the waterbox unless you ran it on the hose for a long time. Dilute it for sure, but some saltiness would probably remain.

    Being a welded aluminum (or Stainless Steel) box, connected to rubber hoses and rubber mounts, my guess is that the salt water doesn't affect the metal much. No electrolytic corrosion, since there are no other metals present.

  4. #4
    SPEED KILLS, BUT YOU GET THERE QUICKER Keddano's Avatar
    Join Date
    Jul 2007
    Location
    Cedar Rapids,Iowa
    Posts
    6,381
    +1
    23
    The 150 is a different Beast then the rest,I think it sure wouldn't hurt to be able to flush and drain. Anything someone does to keep a ski in the best condition I think is an improvement. Just alot of us don't go the extra yard.
    If I haven't said it yet,Welcome to the Hulk.

  5. #5
    Click avatar for tech links/info, donation request K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canada
    Posts
    36,575
    +1
    1,272
    Quote Originally Posted by Keddano View Post
    The 150 is a different Beast then the rest...
    MSX 150 - forgot about the Weber models...

    Does the Weber engine plumbing pump more water through the waterbox that the 2-strokes?

  6. #6
    Kosh's Avatar
    Join Date
    Sep 2007
    Location
    Australia
    Posts
    1,483
    +1
    83
    Thanks for the welcome, i have been here a while on the receiving end of all the good ideas and information and thought i would contribute this one. I do not know if this has more water injected as i have no other ski experience. The fresh water injector is .185" in diameter.

    My main reason was not the water trapped in the muffler but the salt water sitting there in proximity to the exhaust wheel on the turbo and open to valve seats stems and the cylinder area. I wont even mention the failures of cylinder wall coating due to water contamination /condensation.
    Of the three msx's I have had the pleasure of working on two of them needed resleeving and one all the exhaust valves needed replacing. I am not infering this was due to water beinf stored in the exhaust just that if you do not look after them and keep them in a moist envionment they do not seem to like it.
    As i siad the MSX's are the only skis i have had anything nautical to do with so my marine experience is building, but i love them.

    Cheers

  7. #7
    Rocky_Road's Avatar
    Join Date
    Aug 2007
    Location
    Florida Panhandle
    Posts
    826
    Lots to love...in the MSX 150!

    Welcome to the discussions....

  8. #8
    Kosh's Avatar
    Join Date
    Sep 2007
    Location
    Australia
    Posts
    1,483
    +1
    83
    Wile on the subject of protecting the insides of the motor i also modified the air intake to accept a POD cleaner. The pic shows mark 1 a 2.5 " hose. Mark 2 has 3'' hose adapted down to the 45mm compressor intake. I have not calculated any losses but have installed a take of point in the reducer to measure any restriction (next time out)
    I did not like the original set up which allowed the injestion of solid particles. The POD is easy to remove in an emergency (it got to wet to work) I have it mounted in the extinguisger cutout. This also helps if you are cruising half sbumerged.

    Cheers
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Poo 3 July 28.09.08 Record 050.jpg 
Views:	75 
Size:	2.12 MB 
ID:	97819  

  9. #9
    Kosh's Avatar
    Join Date
    Sep 2007
    Location
    Australia
    Posts
    1,483
    +1
    83
    Sorry

    Wrong attachment
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Poo 3 July 28.09.08 Record 150.jpg 
Views:	56 
Size:	2.26 MB 
ID:	97820  

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. RXP exhaust mod
    By Vern in forum 4-Tec Performance
    Replies: 31
    Last Post: 03-03-2009, 06:58 PM
  2. water exhaust mod
    By snoopy in forum Yamaha PWC Performance (2-stroke)
    Replies: 5
    Last Post: 01-20-2008, 11:31 PM
  3. Exhaust mod? Which brand?
    By simonwg905 in forum 4-Tec Performance
    Replies: 8
    Last Post: 12-06-2006, 12:39 PM
  4. Can i do the exhaust mod?
    By DeeGee in forum 4-Tec Performance
    Replies: 2
    Last Post: 06-19-2006, 07:56 PM
  5. Exhaust mod question!
    By DeeGee in forum 4-Tec Performance
    Replies: 17
    Last Post: 06-19-2006, 04:11 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
  •