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  1. #1

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    Riva B1 Wheel Questions

    Hey guys, trying to find some information on Rivaís B1 wheel. I called Riva but surprisingly they didnít have much information on it. Said that the wheel produces 11.5 PSI at 7700 and didnít know if it produced more boost on higher RPMís. Also they didnít know the weight of the wheel.

    I found these two threads which makes me believe it tops out at 11.5 PSI at 7700:
    http://www.greenhulk.net/forums/show...=181757&page=3
    ďWith the B1. I was only seeing 11# or less at 8350rpm(autometer liquid filled gauge) It did hit that 11# at 7750rpm like riva states. But, it just levels out after that.

    http://www.greenhulk.net/forums/showthread.php?t=153135
    ďI barely got 12 pounds out of a B1 @ 8500 rpm's thru a fb type 14 I/C.. @8600 rpm's we got 12 pounds.Ē


    If the max PSI is 11.5 then I would suppose that the fueling from the stock injectors and R3 would be sufficient, but what about the winter time? Would being 1.5 to 2.5psi under the max duty cycle of the injectors be enough to keep you from running lean in the winter time, say both air and water 40 degrees?


    Also does anyone know the weight of the wheel compared to stock and know if the stock shaft would be sufficient?
    Last edited by nashvegas; 07-18-2013 at 09:58 AM.


  2. #2
    it makes 11.5 at 7700 and tapers off slowly to 13psi around 8500.thats in 70s weather using a type 14 intercooler and lots of ventilation.however boost will likely be slightly different from ski to ski depending on the ventilation,temperature,and intercooler core size.the r3 alone should be enough but a boost reffrenced regulator would be a good idea just incase it gets a lil lean in cold weather.wheel is around same weight as stock wheel and i put a shaft the day it went on.i wouldnt take a chance on the stock shaft with it as it could cost you both the wheel and intercooler in the long run.do it right the first time.

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  4. #3
    isa alnoaimi's Avatar
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    do you need an FPR to run the B1 wheel ? with a stock ecu ?

  5. #4
    yes 65psi at idle with the rising rate hooked up 11.5afr at wide open.77-80mph range summer to winter.

  6. #5
    FZS Monty's Avatar
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    I had the b1 for all of last summer here in NY. Used it with Rivas power cooler, intake, exhaust, water box, stock fuel system and r3. Most I saw was 11.5-12 psi starting at 7800 rpm topping out at 8450-8500. Big step up from stock, I enjoyed it

    M

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  8. #6
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    Quote Originally Posted by hialeahchiko305 View Post
    yes 65psi at idle with the rising rate hooked up 11.5afr at wide open.77-80mph range summer to winter.
    I've been told by quite a few people that I won't need one.

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    KamikazeGPR's Avatar
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    Quote Originally Posted by @JC View Post
    Quote Originally Posted by hialeahchiko305 View Post
    yes 65psi at idle with the rising rate hooked up 11.5afr at wide open.77-80mph range summer to winter.
    I've been told by quite a few people that I won't need one.
    He was answering the question of the B1 with a stock ecu. B1 should be fine with a flash

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    @JC

  11. #8
    @JC's Avatar
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    Quote Originally Posted by KamikazeGPR View Post
    Quote Originally Posted by @JC View Post
    Quote Originally Posted by hialeahchiko305 View Post
    yes 65psi at idle with the rising rate hooked up 11.5afr at wide open.77-80mph range summer to winter.
    I've been told by quite a few people that I won't need one.
    He was answering the question of the B1 with a stock ecu. B1 should be fine with a flash
    Bonus points for you for reading comprehension!

  12. #9

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    Any issues with surge from the B1?

    Spoke with Glen at R&D yesterday afternoon and he said that the R3 wouldn't have a problem fueling the wheel in those temps.

  13. #10
    no surge like its big brother the " E1 "

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