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Thread: Stock springs?

  1. #1
    Mothman's Avatar
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    Stock springs?

    I'm considering using titanium retainers, ferrera valves, and stock springs on a 9200 program. Will the stock springs let 'em float? If so, what is the max rpm stock springs can handle with ti retainers and ferrera valves? I'll use riva springs if absolutely necessary, but prefer not to.
    Thanks!


  2. #2
    dduck dduck1628's Avatar
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    http://www.seadoocentre.com/enginemodifications.htm

    I am running OEM springs, Les retainers and my OEM valves that are lighten to 43grams intake and 38 grams exhaust. 40+ hrs now with Seadoo Centre 9200 rpm reflash & prop is pitched for 8900-9000 rpm. Money was the primary factor in my decision to go this route. At the time I felt it was a risky decision since I personally do not know anyone else who has done this successfully. Sure would like to see some feedback from others who have done this too.

    Just looked it up, ferrea valves are 43g intake and 36g exhaust.
    Last edited by dduck1628; 07-31-2011 at 07:29 PM. Reason: added info

  3. #3
    Mothman's Avatar
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    Since they're similar in weight, it's good to know the stock springs can handle it. Thanks!

  4. #4
    Quote Originally Posted by dduck1628 View Post
    http://www.seadoocentre.com/enginemodifications.htm

    I am running OEM springs, Les retainers and my OEM valves that are lighten to 43grams intake and 38 grams exhaust. 40+ hrs now with Seadoo Centre 9200 rpm reflash & prop is pitched for 8900-9000 rpm. Money was the primary factor in my decision to go this route. At the time I felt it was a risky decision since I personally do not know anyone else who has done this successfully. Sure would like to see some feedback from others who have done this too.

    Just looked it up, ferrea valves are 43g intake and 36g exhaust.
    I know of a few people running this setup it's a proven setup. No need for riva valve train upgrade as long as u don't have heaps of hours on your stock springs.

  5. #5
    shrabber's Avatar
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    I will soon find out!!

  6. #6
    Bob 1tommygunner1927's Avatar
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    Quote Originally Posted by dduck1628 View Post
    http://www.seadoocentre.com/enginemodifications.htm

    I am running OEM springs, Les retainers and my OEM valves that are lighten to 43grams intake and 38 grams exhaust. 40+ hrs now with Seadoo Centre 9200 rpm reflash & prop is pitched for 8900-9000 rpm. Money was the primary factor in my decision to go this route. At the time I felt it was a risky decision since I personally do not know anyone else who has done this successfully. Sure would like to see some feedback from others who have done this too.

    Just looked it up, ferrea valves are 43g intake and 36g exhaust.
    SpeedFreeksRacing offers this service:
    http://www.speedfreeksracing.com/sfr/headservice

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