Results 1 to 3 of 3
  1. #1

    Carb swap 4 1989 SP Project

    Click image for larger version. 

Name:	IMG_20110405_192950.jpg 
Views:	403 
Size:	54.5 KB 
ID:	250354Click image for larger version. 

Name:	IMG_20110407_093733.jpg 
Views:	94 
Size:	250.1 KB 
ID:	250355Hello all,

    New here, hope to get some ?s answered and contribut where I can. I have a 1989 SP from the original owner, all stock. My son and I have done the fuel system, pump and polish on it. Problem is I am having a hard time tuning it not to bog off idle. When it startd and runs I have to up on the throttle slow or it bogs, then it rock and rolls. If I tune out the bog it will not start easy.

    This has the old BN38 round with the fuel pump and metering on one side and an additional outboard Fuel pump. Rebuilt it all, replace lines and added a primer. So my question is can I convert thie to a Super BN, is there a bolt on replacement or do I need to get a different manifold? I have read that this old setup is hard to tune and get running correctly so I am thinking replace it. Any thoughts would be helpfull.

  2. #2
    Click image for larger version. 

Name:	dual.jpg 
Views:	78 
Size:	20.7 KB 
ID:	250381I found this setup, I am not sure if it would bolt on 2 the 1989 yellow motor block. I would guess it would, does the switch to 2 carbs need a different rotary valve. Cables may be a challenge , but dooable (joke).

  3. #3

    Join Date
    Jul 2010
    looks good

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. 1989 Yamaha WaveRunner WR500P carb specs
    By revhardSPX in forum Yamaha PWC Performance (2-stroke)
    Replies: 1
    Last Post: 07-14-2011, 06:31 PM
  2. Polaris 750 Engine Swap Project Update
    By GreaseMonkey in forum Polaris Open Discussion
    Replies: 4
    Last Post: 04-30-2011, 05:50 AM
  3. Project 650 to 750 swap
    By cadillacroller2 in forum Polaris Projects
    Replies: 40
    Last Post: 08-08-2009, 04:24 PM
  4. 650 to 720 swap project
    By Ozzimandias in forum 2-Stroke Performance
    Replies: 4
    Last Post: 06-30-2009, 11:16 AM
  5. 1989 650 Carb
    By mattmill91 in forum Kawasaki PWC Performance (2-stroke)
    Replies: 0
    Last Post: 06-25-2009, 11:12 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