Page 2 of 6 FirstFirst 1234 ... LastLast
Results 11 to 20 of 60
  1. #11
    I wonder how many hours the engine will run turning 9000 rpms, how many hp the rods/pistons are able to handle??

  2. #12
    BamaGP's Avatar
    Join Date
    Oct 2021
    Location
    Central AL
    Posts
    14
    +1
    4
    Absolute Rocket ��

  3. #13
    Site Admin
    Join Date
    Dec 2020
    Location
    Morgan City, La
    Posts
    46
    +1
    26
    Quote Originally Posted by K447 View Post
    What fuel octane does that AGR tune require?
    91 octane

  4. #14
    Click avatar for tech links/info K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canada
    Posts
    45,838
    +1
    2,618
    Quote Originally Posted by GreenHulk Jr View Post
    91 octane
    What octane are you using for your testing?

  5. #15
    Site Admin
    Join Date
    Dec 2020
    Location
    Morgan City, La
    Posts
    46
    +1
    26
    Quote Originally Posted by K447 View Post
    What octane are you using for your testing?
    we have 93 octane pump gas here which is what I use.

  6. #16

    Join Date
    Aug 2021
    Posts
    3
    +1
    1
    I always wondered what the design goals originally were and the RPM they originally tested them to and for how long. I always thought 7500 was very low for a stock RPM limit with that bottom end how about a head engineered
    to match.

  7. #17
    too bad we have pandemic, I would have made a plane ticket to come and see these 9000 rpm and 89.2 Speed ​​with oem wheel

  8. #18
    Tucker1's Avatar
    Join Date
    Jul 2019
    Location
    Lake Cumberland
    Posts
    79
    +1
    8
    Quote Originally Posted by GreenHulk Jr View Post
    RIVA RACING STAGE 2 KIT:
    -power filter kit
    -engine breather kit
    -intake manifold upgrade kit
    -gen-3 intercooler
    -pro-series cooling kit
    -titanium valve retainers
    -rear exit exhaust
    -gen-2 intake grate
    -pump seal kit
    -solas 13/18 impeller
    -MaptunerX "STAGE 2 9200 AGR" tune


    RIVA GEN-2 RIDE PLATE


    Air temps were 79 degrees, no wind, and no current as I was in a short canal with locks at both ends. The ski was turning between 8900-9000 RPM. I also weigh 150 pounds.
    With those mods I believe it, plus he has a vid lol. I have the following mods:

    -power filter kit
    -engine breather kit
    -gen-3 intercooler with BOV
    -pro-series cooling kit
    -Riva exhaust "not rear exit"
    -ribbon delete
    -gen-2 ride plate
    -solas 13/20 impeller
    -MaptunerX "STAGE 2" tune

    I ran 85mph when it was 60* out, full tank, 175lbs rider
    Had a 75* day and it ran 83mph then 81mph after heat fade.

    This was all done at the very end of season so I couldn't tweak on it I have a Jims cut plate waiting to be installed but waiting till next season unfortunately. I think with the mods I have and a 13/18, 89mph is not out of the ball park. Just not willing to do the retainers yet:/


  9. #19
    Bryonjodinolan's Avatar
    Join Date
    Jul 2015
    Location
    Redding CA
    Posts
    159
    +1
    14
    Come on whatís not to believe we seen it at this point if you donít believe it itís because your a Yamaha hater

  10. #20

    Join Date
    Sep 2010
    Location
    MI
    Posts
    495
    +1
    52
    Quote Originally Posted by Tucker1 View Post
    Just not willing to do the retainers yet:/
    Install them, pitch the prop to get your revs up to where Greg is running his and don't look back. I was the same way for years. These engines are very happy above 8700rpm. They like to rev. The ski will feel much better and your only regret will be that they weren't one of the first mods you installed.

Page 2 of 6 FirstFirst 1234 ... LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. FS 2009 yamaha fzr riva stage 3 fully built
    By snipe243 in forum Yamaha 4 Stroke Skis
    Replies: 0
    Last Post: 08-16-2019, 11:32 AM
  2. F/s Riva stage 2 ported 63m motor. Built by Tim judge
    By waverider1200 in forum Yamaha Old School Skis
    Replies: 8
    Last Post: 04-09-2013, 03:53 PM
  3. Riva stage III built finally here!!!
    By abracadabra in forum Yamaha PWC Performance (4-stroke)
    Replies: 300
    Last Post: 09-23-2011, 04:43 PM
  4. FS 2009 RIVA Stage 3 FZR + + + Fully built motor
    By stangbang in forum Yamaha 4 Stroke Skis
    Replies: 11
    Last Post: 06-09-2011, 01:32 PM
  5. Riva built Stage III+ FZR
    By 1 FAST VE in forum Yamaha PWC Performance (4-stroke)
    Replies: 69
    Last Post: 09-28-2010, 01:33 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
  •