Project 355: ... New Robust Bypass Valve Design ... Rattles and Buzzes NOT Included!! | FerrariChat
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Project 355: ... New Robust Bypass Valve Design ... Rattles and Buzzes NOT Included!!

Discussion in '348/355' started by gothspeed, Jun 10, 2016.

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  1. gothspeed

    gothspeed F1 World Champ

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    #1 gothspeed, Jun 10, 2016
    Last edited by a moderator: Sep 7, 2017
    Most 355 owners are unfortunately very familiar with the rattle and buzz prone OE bypass valve. Either on their own 355, someone else's or from reading about it on this forum ...... my 355 was no exception to this malady :eek: .... so as many other 355 owners have done ..... I first added tension 'turns' to the actuator linkage ..... worked for a bit ... noise came back ... then added an external spring to preload the shaft at center slightly .... worked for a little longer ..... noise came back ..... sourced a 'good used' bypass (not as worn) ...... worked a little while ... now the noise comes and goes ..... :(
    Should I buy a new one and wait for that one to fail as well? Nope! .... enter the 'goth' solution to this nagging problem .... a New Robust Bypass Valve Design to replace to OE unit ... Rattles and Buzzes NOT Included!!! :)
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  2. k17har

    k17har Karting

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    #2 k17har, Jun 10, 2016
    That looks beautiful and wonderfully done! Top man :)
     
  3. plugzit

    plugzit F1 Veteran
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    #3 plugzit, Jun 10, 2016
    Schweet!!!!!
     
  4. ernie

    ernie Two Time F1 World Champ
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    #4 ernie, Jun 10, 2016
    100% BADASS!!!!

    That is fricken beautiful!!!!!!!!

    Oz my man, once again you have done a brilliant job!
     
  5. Dave rocks

    Dave rocks F1 World Champ
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    #5 Dave rocks, Jun 10, 2016
    Looks great!! I like the quilt too :)
     
  6. INTMD8

    INTMD8 F1 Veteran
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    #6 INTMD8, Jun 10, 2016
    Very nice!!!!
     
  7. malex

    malex Formula 3
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    #7 malex, Jun 10, 2016
    Looks very nice! How does it compare to the Capristo bpv?
     
  8. MAD828

    MAD828 F1 Rookie

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    #8 MAD828, Jun 10, 2016
    Where does the vacuum pipe attach, on the side like OEM? Thats my only gripe with the Capristo version that I have. Would much prefer the vacuum tube to attach on the side rather than the top.

    Looks great.
     
  9. ShineKen

    ShineKen F1 World Champ
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    #9 ShineKen, Jun 10, 2016
    + 355
     
  10. SoCal1

    SoCal1 F1 Veteran
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    #10 SoCal1, Jun 10, 2016
    Tease

    :)
     
  11. johnk...

    johnk... F1 World Champ
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    #11 johnk..., Jun 10, 2016
    Nice.
     
  12. gothspeed

    gothspeed F1 World Champ

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    #12 gothspeed, Jun 10, 2016
    Last edited by a moderator: Sep 7, 2017
    Thanks for the good words .... :)

    I looked at internet pictures of the cappy bypass valve and there were a few features I didn't like .... the butterfly itself has portions of the shaft welded on each end .... which leaves the thin butterfly plate to itself hold shaft/bearing alignment. I believe this was done to compensate for the flow reduction of the rather large butterfly plate 'stops', which are cast into inner wall of the housing (see cappy bypass pic below). However I am not certain if cappy still makes them this way.

    The goth bypass valve uses a genuine Pierburg vacuum actuator (same brand as OE) ..... so it has the vacuum connection on the side of the canister ... :)



    capristo bypass valve pictured below vvv
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  13. MAD828

    MAD828 F1 Rookie

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    #13 MAD828, Jun 10, 2016
    Great job then! When are you selling them?
     
  14. TrojanFan

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    #14 TrojanFan, Jun 10, 2016
    Looks great!
     
  15. jimmym

    jimmym Formula 3

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    #15 jimmym, Jun 10, 2016
    Looks nice Oz.:)
     
  16. phrogs

    phrogs F1 Veteran
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    #16 phrogs, Jun 10, 2016
    So how much are you thinking for these..
     
  17. cf355

    cf355 F1 Rookie

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    #17 cf355, Jun 11, 2016
    +1
     
  18. baschul

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    #18 baschul, Jun 11, 2016
    +355
     
  19. ernie

    ernie Two Time F1 World Champ
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    #19 ernie, Jun 11, 2016
    $1mm meeellion dollars.
     
  20. Markphd

    Markphd Formula Junior

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    #20 Markphd, Jun 11, 2016
    Elegant... Is there a gold version? :)
     
  21. WATSON

    WATSON Two Time F1 World Champ
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    #21 WATSON, Jun 11, 2016
    Dear Mr. Goth,

    It appears that you have a very nice prototype product. I would be willing, at no cost to you, to test that product for a period of 12 months. I can provide monthly feed-back on the performance and usability of that valve. I can even send some pictures if you like.

    Anything to help the brotherhood.

    :) :) :)

    Let me know when they become commercially available. I like it.
     
  22. ssnowball

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    #22 ssnowball, Jun 11, 2016
    You know I,m in, going to have to put a goth or oz logo under my shields to acknowledge your input to my car...
     
  23. vvassallo

    vvassallo F1 Veteran

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    #23 vvassallo, Jun 15, 2016
    Man, that is some gorgeous engineering. Are you offering them through Ricambi? Also, what makes these more robust and not prone to buzzing? It is beautiful, looking very very expensive. :)
     
  24. BucksTifoso

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    #24 BucksTifoso, Jun 16, 2016
    Does the bypass valve noise sound like a rattling chain? I hear an intermittent noise that sounds like a metallic chain coming from the left rear? of the engine.
     
  25. ernie

    ernie Two Time F1 World Champ
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    #25 ernie, Jun 16, 2016
    I see what you did there. Funny boy, fuuuuuunny booooy.
     
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