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Bradan F355 valve job/major service

Discussion in '348/355' started by BRADAN, Oct 4, 2016.

  1. ricmat

    ricmat Formula Junior

    Aug 29, 2016
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    These are absolutely amazing posts. Many thanks!

    I wish we had stuff like this being posted here in Europe
     
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  3. taz355

    taz355 F1 Veteran
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    Nice job and good posts again
     
  4. BRADAN

    BRADAN Two Time F1 World Champ
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  5. BRADAN

    BRADAN Two Time F1 World Champ
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  6. Dave rocks

    Dave rocks F1 World Champ
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    Are those OEM steel guides? I prefer the positive stop feature as can been seen on the original bronze...

    I'm sure the only reason the manufacture removed that feature was for easier grinding (well, small OD starting stock too)
     
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  8. BRADAN

    BRADAN Two Time F1 World Champ
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    Yeah factory guides. I wish they had a step on them also to set the height. The factory installation tool sets the height on the newer style guides.

    No idea I'm sure it was to save money can't think of any other reason.
     
  9. Dave rocks

    Dave rocks F1 World Champ
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    Can you post a photo of the factory tool, Dan?

    The savings in material is moot - especially if these are sintered steel (I believe they are). But, grinding an OD with no shoulder features is much easier (and less expensive)
     
  10. BRADAN

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    Sure thing will snap a few pics tomorrow and post.
     
  11. BRADAN

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  13. BRADAN

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    #35 BRADAN, Oct 20, 2016
    Last edited by a moderator: Sep 7, 2017
  14. BRADAN

    BRADAN Two Time F1 World Champ
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  15. BRADAN

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    #37 BRADAN, Oct 20, 2016
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  16. Dave rocks

    Dave rocks F1 World Champ
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    Thanks - I appreciate it. :)
     
  17. life@8500

    life@8500 Karting

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    #39 life@8500, Oct 22, 2016
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  18. cf355

    cf355 F1 Rookie

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    look'n great
     
  19. PAP 348

    PAP 348 Moderator
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    Should more care be taken with those valves before fitting perhaps? :eek::eek:
     
  20. BRADAN

    BRADAN Two Time F1 World Champ
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    Thanks for posting I couldn't find any pictures.
     
  21. BRADAN

    BRADAN Two Time F1 World Champ
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    Such as? They were fully cleaned and cut.
     
  22. Dave rocks

    Dave rocks F1 World Champ
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    I'm guessing Pap is referring to protecting them from dings, etc. Even though they are hard, it's always a good idea to prevent part to part (steel on steel) contact :)
     
  23. Ferraripilot

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    Sintering a shoulder just isn't necessary as sintered steel will not deform and compress like a bronze valve guide does upon installing, the sintered metal is just that much harder. The sintered guides are tough to install by comparison so once they're in, they're in. The shoulder would be nice but it's not really necessary and if anything they're a liability as sintered metal is more porous which may lead to the shoulder cracking.
     
  24. Skippr1999

    Skippr1999 F1 Rookie
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    I remember from an older thread by Braden that you guys weld some part of the engine during a major. Could you refresh my memory on what that's all about ?
     
  25. Dave rocks

    Dave rocks F1 World Champ
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    Skipp - they tack weld the fences of the Cam shaft drive pulleys.
     
  26. Skippr1999

    Skippr1999 F1 Rookie
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    Thanks Dave
     
  27. BRADAN

    BRADAN Two Time F1 World Champ
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    Agreed and great point. I think a shoulder would just help a standard machine shop do valve guide replacements without the factory tool. Not really worried about dropping the guide though as you stated its a tight fit.
     
  28. BRADAN

    BRADAN Two Time F1 World Champ
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    Exactly. Thanks Dave.
     

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