X4 big bore VE impeller ? turnning 8k
pxctoday

» Log in

User Name:

Password:

Not a member yet?
Register Now!

» Find OEM Parts

» Jobs

» wallpapers

Page 1 of 2 12 LastLast
Results 1 to 10 of 19
  1. #1
    PWCToday Regular Daveinpa's Avatar
    Join Date
    Sep 2012
    Location
    Pa
    Posts
    61

    X4 big bore VE impeller ? turnning 8k

    Any of you guys running big bore strokers in a X4. I'm running a VE 970 with a 12 vane D75 140mm pump 16/25 with 82mm exit nozzle and she is
    turning 8032 rpm on flat water.
    Need to repitch the impeller but not sure to what.

    20200614_120641.jpg
    https://www.youtube.com/watch?v=dLzyiQu4p7g

  2. #2
    PWCToday Regular Daveinpa's Avatar
    Join Date
    Sep 2012
    Location
    Pa
    Posts
    61

    Re: X4 big bore VE impeller ? turnning 8k


  3. #3
    PWCToday.com Is My Home Away From Home Matt Braley's Avatar
    Join Date
    Dec 2011
    Location
    Niceville, FL
    Age
    47
    Posts
    3,275

    Re: X4 big bore VE impeller ? turnning 8k

    Mercy

  4. #4
    PWCToday.com Is My Home Away From Home jetskijockey's Avatar
    Join Date
    Dec 2007
    Location
    Eau Claire, WI
    Posts
    2,947

    Re: X4 big bore VE impeller ? turnning 8k

    Family ski?

  5. #5
    PWCToday.com Is My Home Away From Home Matt Braley's Avatar
    Join Date
    Dec 2011
    Location
    Niceville, FL
    Age
    47
    Posts
    3,275

    Re: X4 big bore VE impeller ? turnning 8k

    Quote Originally Posted by jetskijockey View Post
    Family ski?
    lolololol!

    Seriously though Dave I think you are beyond what I can advise at this point. My SS HX800 turned over 7800 but that's the most I've seen. I like your vid with the GPS. That dial runs up quick when you squeeze it! Awesome

    Wait a minute it is a "family ski" actually. It was his son's ski.
    Last edited by Matt Braley; 06-25-2020 at 08:23 AM.

  6. #6
    PWCToday Regular Daveinpa's Avatar
    Join Date
    Sep 2012
    Location
    Pa
    Posts
    61

    Re: X4 big bore VE impeller ? turnning 8k

    Thanks Matt
    Took a while to get this engine dialed in now I need to get a impeller matched to the HP, I talked with Glen at Impros and he thought switching from a 16/23 to 16/25 would do the trick, clearly not.
    Skat has no taller pitch options for the 140mm D75 pump so its a guess and go from here.
    May have to find a 148mm pump, not sure what size impeller options that would give me, for sure another 2,000 out of the wallet.
    Going to test an 80mm exit nozzle this weekend but I don't expect to see more then a 100 rpm drop, maybe 1-2 mph gain but still turning 7900
    She is a trip to ride, the power comes on from the crack of the throttle.
    I wish Justin was around to see this run, It was his dream child, Still kicking myself for selling his Big Red Farthing hull. This engine in that hull would have been insane.

  7. #7
    PWCToday Regular
    Join Date
    Sep 2013
    Location
    United States
    Age
    30
    Posts
    104

    Re: X4 big bore VE impeller ? turnning 8k

    Jesus Christ

  8. #8
    Frequent Poster scensor's Avatar
    Join Date
    Jun 2013
    Location
    Greece
    Age
    30
    Posts
    264

    Re: X4 big bore VE impeller ? turnning 8k

    c75 is 140mm
    D75 is 148mm
    I would go for d75 and 16/23 swirl 84/87 nozzles it will drop down 200 rpms at least while you will gain low mid and ofc 1-2 mph at least

  9. #9
    PWCToday Regular Daveinpa's Avatar
    Join Date
    Sep 2012
    Location
    Pa
    Posts
    61

    Re: X4 big bore VE impeller ? turnning 8k

    Not all Skat D75 pumps were 148mm, I have 3 older Skat Mag pumps, 1 is C75 six vane 140mm 1 D75 6 vane 140mm and 1 D75 12 vane 140mm
    I was running the D75 six vane 16/23 & 83mm nozzle in my x4 920 ski with a top speed of 70.1 and rpm at 7750, last fall I swapped the D75 for the C75 mag and ran a Solas SC SD XII 17.5/ 26.5 82mm
    nozzle and ran 71.5 at the same 7750 rpm
    Before I had the 12 vane pump I used the D75 six vane from the 920 on the 970 and oddly enough it ran slower but turned 7950, This spring was the first run with the 12 vane 16/25 and top speed
    was about the same as the 16/23 and yet the rpm went up not down as you would guess going from a 23 pitch to a 25 pitch
    Friday I tried the 80mm nozzle on the 970 and rpm came down 200 but no gain in speed, 80mm is not the way to go
    As of now I'm going to repitch the 16/25 to 16/26 or 16.5x26.5

    20200421_134621.jpg

  10. #10
    PWCToday Regular
    Join Date
    Sep 2013
    Location
    United States
    Age
    30
    Posts
    104

    Re: X4 big bore VE impeller ? turnning 8k

    Any update?

Page 1 of 2 12 LastLast

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