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  1. Replies
    5
    Views
    399

    I believe comment about keeping the pump wet is...

    I believe comment about keeping the pump wet is meant to say there is water flushing that way too. That line needs flushed as well. Dosen't have anything to do with cooling the pump.
  2. Just drill out but be sure not to use a drill...

    Just drill out but be sure not to use a drill larger than the original hole size. I bought factory rivets and painted the heads black after install on mine to match the trim. Probably could use any...
  3. Replies
    12
    Views
    994

    You may want to check clearance from the back of...

    You may want to check clearance from the back of the impeller blades and the front edge of the pump vanes.

    Guys used to cut the impeller hub to get it closer to the pump to improve performance....
  4. Replies
    28
    Views
    2,964

    Please post both you guys results, inquiring...

    Please post both you guys results, inquiring minds wanna know.
  5. Replies
    9
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    856

    I would consider another oil change shortly, if...

    I would consider another oil change shortly, if you take the clutch apart you will see the sprag and roller bearings have a lot of wear on them and that worn off metal may all be in the filter but...
  6. Replies
    12
    Views
    1,149

    I just have to ask, does your car run at top...

    I just have to ask, does your car run at top speed for 5 or ten minutes at a time, at 8000 rpm then suddenly go to idle or back to hitting the rev limiter? Superchargers/turbine air...
  7. Replies
    13
    Views
    1,441

    The stock 19 is a nice improvement for a stock...

    The stock 19 is a nice improvement for a stock boat and does have a wing to guide water up into the pump, but the Stainless Riva grate is far more open and less restrictive to water flow, not to...
  8. Replies
    12
    Views
    1,111

    I have an 09 FZ and when I went with the later 85...

    I have an 09 FZ and when I went with the later 85 mm 3 degree nozzle it greatly helped and actually stopped the "bounce" I was getting at speeds over 50 mph or so. I would not go back to the 5...
  9. Replies
    8
    Views
    837

    The 13/20 can give you more top end, just like...

    The 13/20 can give you more top end, just like you would think, however these supercharged engines develop more boost as the rpm goes up so many of the guys wanting to go faster use an impeller with...
  10. Replies
    61
    Views
    7,665

    I apologize about the confusion in my post, I...

    I apologize about the confusion in my post, I meant the Riva has a down turn before 90ing up into the throttle body. The Fizzle has a nice and large hose turning right up into the throttle body and...
  11. Replies
    19
    Views
    2,712

    It does not work on 2018 and 2019 GP1800's which...

    It does not work on 2018 and 2019 GP1800's which have the plastic intake manifold. It is not listed in any of the Riva's 2018-2019 GP1800 performance kits, its only listed separately and they do not...
  12. Replies
    8
    Views
    870

    I have the plastic intake off and the ribbon and...

    I have the plastic intake off and the ribbon and intake opening is exactly the same size as the ribbon in my hand from my 09 FZ. How can it be less restrictive?
  13. Replies
    9
    Views
    1,020

    Riva (and others) Pro Cooling mod

    Pondering the best way to add additional cooling to support Stage 2 mods with upgraded I/C.
    I notice the Riva Pro kit adds additional dedicated line to I/C, and routes that water thru the oil...
  14. Replies
    50
    Views
    16,837

    Huh? The BOV is to protect your clutch, both in...

    Huh? The BOV is to protect your clutch, both in modified and non-modified Supercharged Yamahas.
  15. Replies
    8
    Views
    1,092

    The map sensor is critical to proper engine...

    The map sensor is critical to proper engine performance. If you tap off it you increase the time it takes for the intake's pressure to be accurately read due to the length of line you tee'd into it....
  16. Replies
    24
    Views
    2,399

    May be both my son and I are lucky, both of us...

    May be both my son and I are lucky, both of us when the clutch went out were able to get back to dock (him 10 miles) running at 40-50 mph. And idled fine. Ran good enough for by son to think it was a...
  17. Replies
    24
    Views
    2,399

    The Supercharged Yamaha's typically rattle at the...

    The Supercharged Yamaha's typically rattle at the front of the engine, more noticeable with the seat off.
  18. Replies
    24
    Views
    2,399

    The engine computer adjusts fuel based on many...

    The engine computer adjusts fuel based on many things but more especially BOOST pressure. If you have no boost as like when you loose a clutch, the ski runs ok, you just don't have the top end power...
  19. Replies
    47
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    5,066

    Order placed! :)

    Order placed! :)
  20. Replies
    24
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    1,831

    I raise the left side of trailer as much as I can...

    I raise the left side of trailer as much as I can safely do, taper the end of the tubing I stick down the dipstick tube, and fuss with the tubing until I get it in as far as I can. When the extractor...
  21. Replies
    32
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    3,675

    I looked at the dealers listed on BoatTrader...

    I looked at the dealers listed on BoatTrader selling discounts on skis, they are also the ones who would make you the best deal on a trailer. I bought the LTWCI-X for $1100 a couple of months ago,...
  22. If you pour antifreeze down the flush port,...

    If you pour antifreeze down the flush port, whether the engine is running or not, it will just flow back out the pump. Its not like a car with a water pump which forces water thru the engine, the...
  23. Thread: 2009 fzs $6400

    by LT1GMC
    Replies
    4
    Views
    1,800

    FS End of season sale, why not have an 80+ mph...

    End of season sale, why not have an 80+ mph Yamaha, turn key, ready to roll? No muss, no fuss, no tinkering, just go fast.
  24. Replies
    6
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    855

    Your engine is a lot colder than his, this will...

    Your engine is a lot colder than his, this will change some of those readings. I have had 2 plugs go bad, one was not old. Both idled ok but would not make boost, rpm not much over 6K or so, and...
  25. Replies
    35
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    10,450

    Might be an easy add-on for other ski's, have to...

    Might be an easy add-on for other ski's, have to wait and see how well they work for the new FX owners. My foot wells always full of water after rains, and the wells get grungy if it sits a week or 2...
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