355 - F355 - Cylinder head restoration shops | FerrariChat
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355 F355 - Cylinder head restoration shops

Discussion in '348/355' started by fboutlaw, Jun 3, 2019.

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  1. fboutlaw

    fboutlaw Formula Junior

    Dec 3, 2014
    260
    Woodside, CA
    #1 fboutlaw, Jun 3, 2019
    Hey all,

    I'm in the market for a skilled machinist who can restore my tired F355 cylinder heads (leakdown was between 3-11% with one cylinder at 27%).

    I'm based in Northern California, but as I've sent out a lot of my parts around the US for refurbishment due to high costs and long lines for bay area machinists (+5 months at my mechanics recommended shop to get to the job). Anyone have any top notch recommendations in the US?
     
  2. markcF355

    markcF355 F1 Rookie

    Jun 6, 2004
    3,493
    Schmeckelstan
    Full Name:
    Mark
    #2 markcF355, Jun 3, 2019
  3. Ferrarium

    Ferrarium F1 Veteran
    Sponsor Rossa Subscribed

    Jul 28, 2018
    5,728
    Central NJ
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    Eric
    #3 Ferrarium, Jun 4, 2019
    Is this an example of 355 valve guides that does not have issues having an issue?

    Sent from my LM-Q710(FGN) using FerrariChat.com mobile app
     
  4. SoCal1

    SoCal1 F1 Veteran
    Owner Silver Subscribed

    Jun 14, 2011
    8,630
    SoCal LA/OC/New Mexico
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    Tim Dee
    #4 SoCal1, Jun 4, 2019
    Check for shops that specialize in ducati race bikes, they have a few tricks that work "most excellent" with the 355 heads. Get the corrected timing from them also. ;)
     
  5. 97 Spider

    97 Spider Formula 3

    Dec 15, 2012
    2,241
    Texas
    Full Name:
    Brian
    #5 97 Spider, Jun 4, 2019
    I’m confused, what do you mean?
     
  6. Ferrarium

    Ferrarium F1 Veteran
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    Jul 28, 2018
    5,728
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    Eric
    #6 Ferrarium, Jun 4, 2019
    Ahh ok was not clear sorry. Is the issue with the heads the valve guides or something else not known?


    Sent from my LM-Q710(FGN) using FerrariChat.com mobile app
     
  7. Sportflight

    Sportflight Rookie

    Aug 20, 2014
    13
    #7 Sportflight, Jun 4, 2019
    Call Daniel @ Bradan Coachworks - (631)585-8600

    He does excellent work, he is a sponsor here and is very knowledgeable in regards to the 355.
     
  8. fboutlaw

    fboutlaw Formula Junior

    Dec 3, 2014
    260
    Woodside, CA
    #8 fboutlaw, Jun 4, 2019
    Leakdown:
    1 - 6%
    2 - 6.5%
    3 - 10%
    4 - 6%
    5 - 4%
    6 - 27% leaks from both intake and exhaust
    7 - 11%
    8 - 3%

    No leaks to the block past cylinders.

    I'm not 100% sure what the history is with the heads, but they're old and tired. There's a lot of buildup on the lower intake valves and some on the exhaust valves. I haven't checked the valveguides or seals yet, but the valve seats themselves need work. In the middle of pulling them off after testing.
     
  9. johnk...

    johnk... F1 World Champ
    Owner

    Jun 11, 2004
    11,221
    CT
    Full Name:
    John Kreskovsky
    #9 johnk..., Jun 5, 2019
    If the guides spec ok cutting the seats and replacing a could of valves is a DIY job.
     
  10. taz355

    taz355 F1 Veteran
    Owner Silver Subscribed

    Feb 18, 2008
    6,016
    Indio Ca/ Alberta
    Full Name:
    Grant
    #10 taz355, Jun 6, 2019
    I thought there was a good company in san louis obispo
    But cannot remember name
     
  11. jjtjr

    jjtjr Formula Junior

    Aug 29, 2016
    757
    Vermont
    Full Name:
    john truskowski
    #11 jjtjr, Jun 7, 2019
    Would be a shame to condemn the valve guides if the seals are the cause for the carbon buildup and subsequent leakdown :(
     
  12. yelcab

    yelcab F1 World Champ
    Consultant

    Nov 29, 2001
    13,554
    San Carlos, CA
    Full Name:
    Mitchell Le
    #12 yelcab, Jun 7, 2019
    He did not condemn the valve guides. He said it was tired and time for a valve job. Come to think of it, I have never seen a Cylinder 6 fail. Only CyL 2 or Cyl 7.
     

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