Page 1 of 2 1 2 LastLast
Results 1 to 10 of 20
  1. #1
    I'D RATHER SWEAT THAN SHIVER hyoctane23's Avatar
    Join Date
    May 2007
    Posts
    1,967
    +1
    34

    Kind of confused on water routing...

    I've been trying to figure out this whole tripple pipe deal, like how different cooling configurations effects performance. For instance, my cooling hose that comes off the cooling rail sprung a leak due to stupid reasons...I didn't know this until performance suddently was gone and it wouldn't rev past like 5600 RPMs until I fixed it (did a stupid patch on the shore, but it worked until I replaced the hose). Why did lack of cooling water going into the pipes from that hose cause the loss in performance? Maybe explain where the different inlets and outlets of the pipes go?


  2. #2
    Moderator beerdart's Avatar
    Join Date
    Aug 2006
    Location
    CT
    Posts
    25,929
    +1
    1,407
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	1992-1998FactoryManual.jpg 
Views:	87 
Size:	370.9 KB 
ID:	64293  

  3. #3
    I'D RATHER SWEAT THAN SHIVER hyoctane23's Avatar
    Join Date
    May 2007
    Posts
    1,967
    +1
    34
    Quote Originally Posted by beerdart View Post
    So I guess the water enters in the exhaust right there at the stinger?

  4. #4
    Moderator beerdart's Avatar
    Join Date
    Aug 2006
    Location
    CT
    Posts
    25,929
    +1
    1,407
    Yes. What hose came off?

  5. #5
    I'D RATHER SWEAT THAN SHIVER hyoctane23's Avatar
    Join Date
    May 2007
    Posts
    1,967
    +1
    34
    The main water discharge had a hole sliced through it so no water was getting to the stingers.

  6. #6
    Connecticut CrazyA's Avatar
    Join Date
    Nov 2005
    Location
    CT.
    Posts
    8,134
    +1
    1,050
    Quote Originally Posted by hyoctane23 View Post
    Why did lack of cooling water going into the pipes from that hose cause the loss in performance?
    That and the possability that the water leak (under alot of pressure) was "misting" into your flame arrestor.

    1 large line feeds your water manifold and splits into 6 (from water in)

    -3 go to your exhaust manifolds and feed the engine (from water manifold)

    -3 go to your main pipe bodies and then overboard (from water manifold)

    1 comes from your water out and splits into 3 stinger feeds.




    This is all assuming that you have it plumbed like Beer's diagram.

  7. #7
    I'D RATHER SWEAT THAN SHIVER hyoctane23's Avatar
    Join Date
    May 2007
    Posts
    1,967
    +1
    34
    Ok, maybe I'm thinking too far into this...maybe it was as simple as you said it Crazy that water was just misting into my FA, though I do have water socks to help prevent that....though I do realize that the water is under high pressure and the socks didn't do much.

    Anyways, I tried to find some pages on expansion chamber theory, and it is quite interesting. The cooling pipe I sliced (by a loose hose clamp that was around the drive shaft that decided to spin with the driveshaft and slice the hose) fed the stingers.

    Now I understand that the temperature of the exhaust gases greatly effects the expansion chamber's performance and power band because the higher the temperature, the faster the sound waves travel, thus making the reflected higher pressure wave come back to the port faster than designed. Maybe since my stinger wasn't getting any cooling water, the exhaust gasses increased in temperature, and the resulting sonic wave got to the port too early?

    I dunno, like I said, maybe I'm reading into this all too much and it was just injested water. Now I must go look at how power valves really work....

  8. #8
    Click avatar for tech links/info, donation request K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canada
    Posts
    36,570
    +1
    1,272
    Quote Originally Posted by CrazyA View Post
    ...1 comes from your water out and splits into 3 stinger feeds...
    So the pressure for the stinger feeds is entirely the backpressure from the hull exit fitting?

    That doesn't seem like very much pressure. Is there a restrictor or something in the hull exit path to produce some pressure?

  9. #9
    Moderator beerdart's Avatar
    Join Date
    Aug 2006
    Location
    CT
    Posts
    25,929
    +1
    1,407
    The tee fitting that supplies the stinger is a restriction.

  10. #10
    Click avatar for tech links/info, donation request K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canada
    Posts
    36,570
    +1
    1,272
    Quote Originally Posted by beerdart View Post
    The tee fitting that supplies the stinger is a restriction.
    That I see. But what is producing the pressure that the restriction is restricting?

    Edit: Which tee are we talking about? The one that splits three ways to feed the stingers, or the tee just before the hull exit?

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. What kind of sealant on pump housing when re-installing?
    By mini73 in forum 4-Tec Performance
    Replies: 6
    Last Post: 06-30-2011, 05:02 PM
  2. Replies: 5
    Last Post: 07-05-2010, 03:44 PM
  3. What kind of damage does salt water do?
    By mrtinker in forum Yamaha PWC Performance (2-stroke)
    Replies: 6
    Last Post: 06-09-2009, 09:46 AM
  4. Replies: 0
    Last Post: 06-28-2008, 09:14 AM
  5. help with water routing of riva heads...im unsure what is best
    By MJE in forum Yamaha PWC Performance (2-stroke)
    Replies: 5
    Last Post: 06-01-2007, 03:59 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
  •