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  1. #1
    bscpaint's Avatar
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    The svho pump will not work with riva wear ring.

    I'm making this post regarding a post from a few days ago which I said they will line up, thanks to Gus13letter saying they might not work, I actually compared the 2 side to side to see the differences. The main difference being the cooling passage does not line up with the Riva liner and will let water escape out the side of the pump possibly overheating your motor.
    Also the Riva liner is a fraction of a mm larger then the svho liner. In the pictures you will see I stacked the svho transom plate the svho liner and then the Riva liner all together. Sorry for the misinformation.
    Click image for larger version. 

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  2. #2
    Brian the cooling passage doesnt line up with OEM liner either. Some bolt them up and use them as is and work just fine, others widen the hole on the liner. As for the riva line I have the same issue with the 155ss liner. Im going to have my friend weld up the side so there is enough material so close up the hole and make it flush with the pump. I may have to have another friend machine the surface flush depending on how the weld comes out. If you need yours done let me know!

  3. #3
    jetpilot785's Avatar
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    I noticed on Riva's site they offer 2 different pump and wear rings for either the HO/SHO and SVHO so maybe they have different patterns for the different transom plates. I have no idea if that's the deal or not but they do offer 2 different part numbers for the different models. You may have the HO/SHO version and trying to mount it up to the SVHO or vise versa.

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  5. #4
    Yes we want to mount the svho pump to the sho liner. I have the stainless liner already and don't want to buy a new one so I'm going to modify current one to work by adding material so I can make the cooling hole match up like how you have to mod the oem liner

  6. #5
    Lakeside518's Avatar
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    You would think Riva would have a kit to install a 160mm liner & svho 155mm pump in pre 2014 skis. I'm sure they would sell quite a few!

    I'm stalling right now, unsure what I want to do... I have little faith in the Riva 160mm race pump for my application. Feel that the hub is to small & I will be unable to pressurize the pump. Loose to much top speed.

  7. #6
    RIVA CREW's Avatar
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    Sorry about any confusion regarding compatibility of our new SVHO pump (part# YVS-SV-160/74). This pump is designed to line up with the OEM SVHO wear ring or our new aftermarket 160mm wear ring (part #RY33-160-YV). The cooling passages will not match our 160mm SHO wear ring (part #RY-160-YF-1). Note that our new wear ring (RY33-160-YV) will back-fit to SHO/HO models also.


    If you have any questions regarding applications, please contact Brian in our Customer Service Department: [email protected]


    Thank you,


    Riva Crew


  8. #7
    Site Admin Green Hulk's Avatar
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    Riva offers two different race pumps. One for the SHO/HO skis and one for the SVHO skis. Both shown below

    Riva Yamaha 160mm Race Pump for SVHO Skis

    Our 160mm Race Pumps deliver increased acceleration & top speed along with reduced cavitation. Designed for high performance applications that exceed...
    YVS-SV-160/74 $999.95


    Riva Yamaha 160mm Race Pump for SHO & HO Skis

    Our 160mm Race Pumps deliver increased acceleration & top speed along with reduced cavitation. Designed for high performance applications that exceed...
    YSS-SV-160/74R $999.95




    Riva also offers a stainless steel wear ring which will work with either pump
    RIVA 160 mm liner for SVHO/SHO/HO Pump

    Our heavy-duty 160mm wear ring is the answer to keeping your SVHO/SHO/HO pump hooked up when horsepower has exceeded the capacity of original pump....
    RY33-160-YV $499.95




    And, as those that use these can tell you, topping these pumps off with a Lucky 13 adjustable pump cone works best!

    Lucky 13 Adjustable Pump Cone for Yamaha SHO & HO Skis

    All billet construction and anodized to prevent corrosion. Easily adjusted by removing stainless steel tail cone bolt, pulling off billet cone and...
    L13-YAM $298.00


    Lucky 13 Adjustable Pump Cone for Yamaha SVHO Skis

    All billet construction and anodized to prevent corrosion. Easily adjusted by removing stainless steel tail cone bolt, pulling off billet cone and...
    L13-YAM-SVHO $298.00


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  10. #8
    Gus13letter's Avatar
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    Thanks for posting the differences and additional information. I know several folks are looking to mix and match the items to the older skis so this is useful to see what is required.

  11. #9
    powerstroke specialist mikegp's Avatar
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    i'm using the svho pump on the oem sho wear ring , no problem .

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