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Thread: pump support

  1. #1

    Join Date
    Aug 2007
    Location
    kingston, Ont
    Posts
    40

    pump support

    Heres the setup -s3 sc,xs ic, re blockoffs, vortech bov, 42 #, 15-20,modified thru hull exhaust, riva grate , cold air.

    pump support was damaged and all the teeth were groud out and smoothed.
    Heres the question- cavitates and hits rev limit out of the hole,
    but only spins 7850rpm @74(gps) wfo.

    any ideas?


  2. #2

    Join Date
    Aug 2007
    Location
    kingston, Ont
    Posts
    40
    I forgot to mention 81mm nozzle

  3. #3

    Join Date
    Jul 2005
    Location
    euxton nr chorley lancashire, england
    Posts
    1,500
    +1
    1
    Quote Originally Posted by jbsr View Post
    Heres the setup -s3 sc,xs ic, re blockoffs, vortech bov, 42 #, 15-20,modified thru hull exhaust, riva grate , cold air.

    pump support was damaged and all the teeth were groud out and smoothed.
    Heres the question- cavitates and hits rev limit out of the hole,
    but only spins 7850rpm @74(gps) wfo.

    any ideas?
    check the carbon seal it may be pulling air out of the hull on take off, as for 7850rpms that could be a boost leak, check the bov main o ring somtimes there spat out.

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