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  1. #1
    masta2000's Avatar
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    stage 3 BOV problems?

    i have a 2004 rxp with a stage 3 riva kit minus the ecu and valve springs. the machine runs fine all day but always in the last 20 minutes home it starts bogging and it wont run well over 5000 rpms. i noticed today i drove slow home in the chop and it did it. i also noticed that the bov shoots out at idle, is this normal? when i installed it i didnt adjust the screw on top, does this need to be worked? at first i thought it was the SC clutch, so i replaced it. the machine runs fine the next day then does it again eventually. there are no air leaks and i connected the bov signal into intake manifold.

    is it the bov doing this? like i said when the machine is cold it runs fine for hours at cruising speed, im under the impression it happens when i drive slow for a while.

    plz help!


  2. #2
    AKA "The Guppy" JeffTurbo601's Avatar
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    its been shown that the riva pro series bov has a o-ring inside that tends to float around and sometimes make the flapper stick open, it could very well be your issue. i would also check the slip on your charger, especially after coming unhooked a bunch in rough water

  3. #3
    masta2000's Avatar
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    is there a way to open up the bov? is it serviceable? is riva aware of this flaw?

  4. #4

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    Quote Originally Posted by masta2000 View Post
    is there a way to open up the bov? is it serviceable? is riva aware of this flaw?
    i had the same problem with mine it kept spitting the o ring off, i took it off and made a blanking plate

  5. #5
    AKA "The Guppy" JeffTurbo601's Avatar
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    your best bet is to either cap it off and get rid of it all together or get with malvin at turbotech and get his tial bov, its a much better unit.....i got rid of mine all together!!

  6. #6
    masta2000's Avatar
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    man, thats too bad. only has 4 hours on it and its acting up! i just opened it up by removing the huge c-clip holding the top casing. i couldnt find o-ring anywhere except a seal on the release valve at the complete bottom sealing the void where pressure drops out of. could it be if i didnt tighten the bolts with gasket onto pipe tight enough and it acts up at high temp? im really trying to find an excuse to try and make it work. it just seems that everyone isnt using the riva bov at all from what ive been reading. but as far as i understand inside the casing is a membrane and only other seal is at bottom of valve at entrance of pressure.

  7. #7
    masta2000's Avatar
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    also is there any adjustment to do with the spring since the unit looks pristine?

  8. #8
    Gus13letter's Avatar
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    Many have said the Riva BOV leak. Just cap it off and be done with it.
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  9. #9
    inteljd's Avatar
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    If you run without a BOV don't you burn your clutch up 30% faster?

  10. #10
    masta2000's Avatar
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    thats what im afraid of....

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