355 Inner CV boot deterioration, swelling, deformation and cracking problem? .. Nope! | Page 6 | FerrariChat

355 Inner CV boot deterioration, swelling, deformation and cracking problem? .. Nope!

Discussion in '348/355' started by gothspeed, Jun 16, 2015.

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  1. johnk...

    johnk... F1 World Champ
    Owner

    Jun 11, 2004
    11,276
    CT
    Full Name:
    John Kreskovsky
    On average looks like about a 40 degree temp difference. Would seem significant. Thanks for the effort.
     
  2. vvassallo

    vvassallo F1 Veteran

    Aug 4, 2006
    8,329
    Palos Verdes
    Full Name:
    Vince V
    Yep. Look at the temperature range that the OEM shields put the CV boots under - purple line. No wonder your parts die.

    Anytime anyone needs me to storm around the neighborhood in their car, just call. ;)
     
  3. lotusk

    lotusk Formula 3

    Nov 3, 2003
    1,840
    London UK
    Excellent graph

    Great attention to detail

    Appreciate knowing that my 1995 M2.7 with her new CV boots is well protected
     
  4. johnk...

    johnk... F1 World Champ
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    Jun 11, 2004
    11,276
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    Full Name:
    John Kreskovsky
    Have you installed the shields on your 95? How did you get them in there? Pictures?
     
  5. johnk...

    johnk... F1 World Champ
    Owner

    Jun 11, 2004
    11,276
    CT
    Full Name:
    John Kreskovsky
    #130 johnk..., Aug 22, 2015
    Last edited by a moderator: Sep 7, 2017
    Ok, I finally got a change to log some temp data on my 95 with OEM shields which are covered with sheet aluminum cut to the same size and shape of the OEM shields. The first picture shows the mounting of the thermocouple on the underside of the shield. It was mounted with a small piece of wood (1/8" thick) which was supposed to act somewhat as a insulator between the shield and the TC. Thus was located on the back side of the shield near the bottom edge.

    The second picture shows the shields as installed on my car. Note that the back part of the shield is almost directly under the Y pipe.

    Third figure shows the temperature data from start up, driving, stopping for gas, driving, stopping for lunch, driving home and cool down in the garage. Pretty much self explanatory. Time is in minutes from start up.

    I hope to do another extended test with the TC mounted differently to better isolate it from contact with the shield.
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  6. cf355

    cf355 F1 Rookie

    Feb 28, 2005
    4,208
    Full Name:
    chris
    Excellent data posting for comparison.
     
  7. vvassallo

    vvassallo F1 Veteran

    Aug 4, 2006
    8,329
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    Vince V
    The location of your sensor is at the high point under the stock shields. Your greatest heat entry is not from there, but the cats to the rear. Heat rising, the sensor is going to be affected as indicated. But your CV boots are still cooking, mostly from heat intrusion from the cats, we believe. You definitely need a set of goth's shields, dude.
     
  8. johnk...

    johnk... F1 World Champ
    Owner

    Jun 11, 2004
    11,276
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    John Kreskovsky
    Dude, the sensor is located about 1" above the lower edge of the back flap of the OEM shield, on the inside. It's a 95, so is also directly under the Y pipe. Don't be confused by where the lead wire comes out.

    Anyone actually buy the Goth shields and put them on yet? Pictures?
     
  9. Badabing!

    Badabing! Formula Junior

    Mar 30, 2014
    731
    NYC
    I installed them 2 weeks ago as part of a inner boot change on the passenger side. They fit and look great. I'll try and take some pics and post.
     
  10. johnk...

    johnk... F1 World Champ
    Owner

    Jun 11, 2004
    11,276
    CT
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    John Kreskovsky
    Sorry, I was referring to installing them on a '95. And how you got them in there on a '95.
     
  11. Redlyne_mr2

    Redlyne_mr2 Formula Junior

    Aug 5, 2009
    474
    Calgary, Alberta
    Full Name:
    Ryan D
    Sorry I searched through the thread but couldn't find the answer, how is installation with these?
     
  12. lotusk

    lotusk Formula 3

    Nov 3, 2003
    1,840
    London UK


    Sorry John

    Not installed yet.
     

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