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  1. #1
    Mik72e's Avatar
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    How much do you open up a R&D D-Plate

    Guys did a search couldn t find how much i need to open up a R&D D-Plate to be the same size as a RIVA one for a 1300.

    Mike


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    Moderator OsideBill's Avatar
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  3. #3
    Mik72e's Avatar
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    Thanks Bill one question is that .200 tho sounds like a far bit to be opening up...

    Because we work in cm & mm....

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    Moderator OsideBill's Avatar
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    Mike the goal is to get the D-plate to 2.3" (58.42mm) on a ported 1300. The common recommendations are 1200 run the R&D 2.1" (53.34mm)
    1300 run Riva 2.2" (55.88mm)

    Here is a handy tool I use all the time for conversions covers just about everything
    http://www.greenhulk.net/forums/showthread.php?t=36500

  6. #6
    philip_gpr's Avatar
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    and

    on a 1390 go bigger again

    on a 1500 even bigger

    should provide both a mid range gain and an improvement in peak rpm

  7. #7
    Chrisrokc's Avatar
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    Quote Originally Posted by philip_gpr View Post
    and

    on a 1390 go bigger again

    on a 1500 even bigger

    should provide both a mid range gain and an improvement in peak rpm
    How big are you guying opening up the Riva D-Plate with a 1390? I have mine opened up .110 right now.

  8. #8
    Moderator OsideBill's Avatar
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    Quote Originally Posted by Chrisrokc View Post
    How big are you guying opening up the Riva D-Plate with a 1390? I have mine opened up .110 right now.
    This question no one was able to nail down for me, all I was told is that 2.8" is max. I plan on cutting mine incrementally to find the sweet spot.

  9. #9
    Some of us dont open them up at all....My BB ski lost 50 rpm on top with a .200 plate..
    Last edited by rossnemo; 08-03-2008 at 08:57 PM.

  10. #10
    Chrisrokc's Avatar
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    Quote Originally Posted by rossnemo View Post
    Some of us dont open them up at all....My BB ski lost 50 rpm on top with a .200 plate..
    Hmm, thats good information. I wonder what some of the others are running. Some paper listed off the .110 spec, thats why I did it
    Last edited by Chrisrokc; 08-03-2008 at 09:01 PM.

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