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  1. #1
    GREENSMACKER's Avatar
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    r/d heads or riva heads?

    just a quick question which aftermarket head is the best one ? are they all the same ?any experience with these heads would be much appreciated. just trying to find out some more info before i purchase one. thanks chris!


  2. #2
    yami_rida#26's Avatar
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    Stock head milled is the best hands down. But if you want to go to aftermarket I think most people see the best gains and life with R&D heads.

  3. #3
    oem milled head is the best then if you get tired of that you can buy an aftermarket one

  4. #4
    Mik72e's Avatar
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    OEM all the way 150 150 145

  5. #5
    NIXON'S BACK!! cincygpr's Avatar
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    Pro-tec is a pretty popular choice too; it's a one-piece billet machined unit and it's REALLY pretty One style uses the stock head cover, too, so it looks stock when it's all put together.

  6. #6
    OEM and high compression equals cracked cylinder eventually...ADA Girdled head is the way to go....put a girdle on that head !

  7. #7
    Moderator OsideBill's Avatar
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    OEM all the way, I have never had an issue with my modded OEM heads, I have had them machined by GroupK, Lowell and Pro-Tec for various different skis. I can't make the same claims for the aftermarket ones. But if it is looks your after get some pretty billet ones.

  8. #8
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by GREENSMACKER View Post
    just a quick question which aftermarket head is the best one ? are they all the same ?any experience with these heads would be much appreciated. just trying to find out some more info before i purchase one. thanks chris!
    Riva and R&D 3 piece heads are pretty much the same

  9. #9
    WATER WOODY's Avatar
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    Quote Originally Posted by WFO View Post
    Riva and R&D 3 piece heads are pretty much the same
    +1

    06' Stealth ski...R&D heads/girdle

    01' Stroked Triple Piper...Riva heads/girdle kit

    NEVER had a single problem running them since 06'

    Dont use the stainless bolts that come with the Riva/R&D heads.
    A factory head acts like a bridge for the jugs when installed,this is a good thing.I run the girdle kits for strength.I can take one head off at a time to check wash/etc.....thats what i like about these heads.When i built my stroker,you have to set each head at 10psi tq,check the squish and make sure the head is in the exact position because the pistons actually come out of the cylinder deck.You dont want the piston to hit the head.
    This is just my personal choice.A stock milled head is alot cheaper and does a great job also.You should have your stock head done IMO.
    Last edited by WATER WOODY; 09-06-2008 at 11:10 PM.

  10. #10
    GREENSMACKER's Avatar
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    Quote Originally Posted by WATER WOODY View Post
    +1

    06' Stealth ski...R&D heads/girdle

    01' Stroked Triple Piper...Riva heads/girdle kit

    NEVER had a single problem running them since 06'

    Dont use the stainless bolts that come with the Riva/R&D heads.
    A factory head acts like a bridge for the jugs when installed,this is a good thing.I run the girdle kits for strength.I can take one head off at a time to check wash/etc.....thats what i like about these heads.When i built my stroker,you have to set each head at 10psi,check the squish and make sure the head is in the exact position because the pistons actually come out of the cylinder deck.You dont want the piston to hit the head.
    This is just my personal choice.A stock milled head is alot cheaper and does a great job also.You should have your stock head done IMO.
    i would cut my head but i wanted to keep one stock cant find any 4sale if i dont use the bolts that come with it wouldn't the stock ones be too long?

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