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  1. #1
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    Riva heads or Oem milled head

    Gp1200r ported triple with gobs of ffast parts
    looking for power and cooling
    i have a Oem head I can have cut or do I buy riva heads since they have the cooling hose for each head to allow motor o run cooler.
    was thinking bout having head cut to 160-175 psi and mix race gas 50/50 with 94 super for even more power


  2. #2
    One day at a time..... N8R's Avatar
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    save your money and have Jim mill oem head... I saw no noticible between the two except price


  3. #3
    porschemaniac's Avatar
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    Oem head ties the cylinders together where the Rivas don't. Go with the oem cut by bill. I use riva for the girdles and cooling but I machine a second girdle that ties all the cylinders together. Best of both worlds but a lot of work

  4. #4
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    My thinking wAs the riva has better cooling features which is a huge benefit with the ski since its far from stock. I already have a riva girdle kit from when I sold off beat up riva heads. If you guys think go Orem and it will still cool fine then that's what I will do.mi just figured the extra cooling was worth the extra 200,00

  5. #5
    Moderator beerdart's Avatar
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    Cooling is the same if you dump #3 on the OEM.

  6. #6
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    I'd have to buy new oem head bolts now that I think about it. I'm guessing after shipping, bolts, cutting the head is be about even with buying a new riva set

  7. #7
    mudslanger's Avatar
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    Quote Originally Posted by thatdude596 View Post
    Gp1200r ported triple with gobs of ffast parts
    looking for power and cooling
    i have a Oem head I can have cut or do I buy riva heads since they have the cooling hose for each head to allow motor o run cooler.
    was thinking bout having head cut to 160-175 psi and mix race gas 50/50 with 94 super for even more power
    I went with 6 new billet hull fittings and plugged the stock ones. the reason was to keep constant temp on the triples by changing jet sizes for optimal temp. and dumped all three heads on 3 of the fittings and the triples on the other 3 fittings. just make sure the fittings don't restrict water flow as some fittings can. It does take a lot of hose and a bunch of clamps.

  8. #8
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    Pics? I don't understand the dumping water overboard. I know my ski has 2 pissers on the rear that's aftermarket

  9. #9
    mudslanger's Avatar
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    Click image for larger version. 

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    Heres some pics i was showing were i used part of the original battery box when i relocated it. ill have to get more pics of the hose routing if your interested in doing something similar.

  10. #10
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    I think the easiest thing for me and close to being the cheapest is buying a set if Rivas. I already have girdle kit, and could sell oem head. The head bolts will cost to 100.00 so the price difference isn't all that much.
    Mudslinger where's your ebox. I'm interested in seeing your setup and curious why you went the route you did. What jets are you talking about that you changed? Carbs?

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