1989 seadoo 587 full build!! Pipe, Cylinders, prop, etc.. - Page 5
pxctoday

» Log in

User Name:

Password:

Not a member yet?
Register Now!

» Find OEM Parts

» Jobs

» wallpapers

Page 5 of 5 FirstFirst ... 345
Results 41 to 48 of 48
  1. #41
    I dream skis jetbum's Avatar
    Join Date
    Oct 2004
    Location
    Dirty River Rider Dunnville, Ontario
    Age
    47
    Posts
    596

    Re: 1989 seadoo 587 full build!! Pipe, Cylinders, prop, etc..

    Awesome. Good work. What did you do for handling mods
    1989 sea doo resto mod in the works

  2. #42
    PWCToday Newbie
    Join Date
    Aug 2013
    Location
    United States
    Age
    30
    Posts
    18

    Re: 1989 seadoo 587 full build!! Pipe, Cylinders, prop, etc..

    None so far.

    Question though, is water supposed to go through the whole exhaust including the muffler? My decker pipe has 2 hose barbs, one that comes off the manifold and one smaller one that goes directly into the exhaust. I was having an issue with the pipe and muffler getting extremely hot which i know its not supposed to do.

    Probably answering my own question but i want to make certain before i do anything

  3. #43
    PWCToday.com Is My Home Away From Home WFO Speedracer's Avatar
    Join Date
    Aug 2006
    Location
    Al-ugh-bam-ugh
    Posts
    27,393

    Re: 1989 seadoo 587 full build!! Pipe, Cylinders, prop, etc..

    yes water runs through the whole exhaust system, the way most watercraft exhaust work is the water goes through the exhaust pipe which preheats it some before it hits the cylinders, then it come out at the top of the head and at the top of the exhaust manifold, some of it runs down the pipe to cool off the waterbox and the rubber parts of the exhaust system.
    Y'all know me, still the same O.G. but I been low-key
    hated on by most these &^$$@s with no cheese, no deals and no G's, no wheels and no keys, no boats, no snowmobiles, and no skis, mad at me cause I can finally afford to provide my family with groceries

    WWSRD , What would Speed Racer do ?

  4. #44
    PWCToday.com Is My Home Away From Home
    Join Date
    May 2007
    Location
    Arkansas
    Posts
    2,392

    Re: 1989 seadoo 587 full build!! Pipe, Cylinders, prop, etc..

    Not only the amount but also the rpm you add water will greatly affect performance.

  5. #45
    I dream skis jetbum's Avatar
    Join Date
    Oct 2004
    Location
    Dirty River Rider Dunnville, Ontario
    Age
    47
    Posts
    596

    Re: 1989 seadoo 587 full build!! Pipe, Cylinders, prop, etc..

    I remember adding restrictors in my exhaust cooking lines back in the day
    1989 sea doo resto mod in the works

  6. #46
    PWCToday Newbie
    Join Date
    Aug 2013
    Location
    United States
    Age
    30
    Posts
    18

    Re: 1989 seadoo 587 full build!! Pipe, Cylinders, prop, etc..

    I know this thread is a little old but I wanted to update everyone real quick. So as you can imagine things got pretty busy for me and I can only work on the weekends for projects so i was unable to really complete the project, plus i was dealing with a "rev on trailer but not in water" issue as well as getting everything to cool well enough to not set everything ablaze in the jet ski..all of which is now resolved. I have taken it on short runs and I can say for a 580 this thing rips! Very fun in the water, easy to spin out, wave jump etc.. the whole 9 yards! I am really excited to test the top speed in this unit because I think It will surprise alot of you. So this weekend I will be officially taking it out on the maiden voyage for the top speed run! I speculate with as much "get up an go" as this has compared to other 2 strokes I have rode I bet this thing will get darn close to 50mph if not maybe a little more. I also removed the intake grate entirely to get the best possible mph.

  7. #47
    PWCToday Newbie
    Join Date
    Aug 2013
    Location
    United States
    Age
    30
    Posts
    18

    Re: 1989 seadoo 587 full build!! Pipe, Cylinders, prop, etc..

    I also went ahead and put a 159 degree rotary valve in it instead of the 140-something I initially wanted.

  8. #48
    PWCToday Newbie
    Join Date
    Aug 2013
    Location
    United States
    Age
    30
    Posts
    18

    Re: 1989 seadoo 587 full build!! Pipe, Cylinders, prop, etc..

    Got it up to 42mph but the ski was Porpoising so bad i really couldnt go much faster. I will be adding an extended rode plate to help with this. Only had at 3/4 throttle and the ski is still running a little lean on the top and bottom end so 50mph seems completely possible at this point.

Page 5 of 5 FirstFirst ... 345

Thread Information

Users Browsing this Thread

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

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Powered by vBadvanced CMPS v4.2.0