355 engine is out - question on timing belt | FerrariChat
Buy

355 engine is out - question on timing belt

Discussion in '348/355' started by mparz, Jun 11, 2008.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. mparz

    mparz Rookie

    Jul 25, 2005
    10
    Upstate NY
    Full Name:
    Mike Parzych
    #1 mparz, Jun 11, 2008
    Last edited by a moderator: Sep 7, 2017
    Well, as Uconn Husky experienced, the process is taking longer than expected for me... I did pull the engine this past weekend and it went remarkably smooth. One of my jacks was only 16" high but it was not a problem to spin the engine 90 degrees and roll it out. A pic is below. The PDF from rifledriver was really good and the fact that my Spyder has the ECU's in the rear removed the step of threading the wiring through the firewall.

    Does anyone have steps for replacing the timing belts? I've got new belts and tensioners, the workshop manual is not very intuitive (at least for me). I'm wondering what needs to be removed to loosen things up and looking for a better explanation on proper tensioning. Thanks!
    Image Unavailable, Please Login
     
  2. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,620
    The Brickyard
    Full Name:
    The Bad Guy
    #2 ernie, Jun 11, 2008
    Interesting?????

    Would you care you share the PDF with the rest of us?
     
  3. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,620
    The Brickyard
    Full Name:
    The Bad Guy
    #3 ernie, Jun 11, 2008
    Well the first thing you will want to do is to find Top Dead center for the #1 piston. Then mark the location of the cams, the belt, and the pulley. After you have found TDC and marked every thing then you can take the belts off.

    After you have put the new belts on be sure to time your cams so that you will know if your cam marks are accurate for future belt changes. A quick search of the archives ;) yielded these thread for the cam timing.

    http://ferrarichat.com/forum/showthread.php?t=130430

    and this excellent thread,

    http://ferrarichat.com/forum/showthread.php?t=148917
     
  4. mparz

    mparz Rookie

    Jul 25, 2005
    10
    Upstate NY
    Full Name:
    Mike Parzych
    #4 mparz, Jun 11, 2008
    Sure, here's the post: http://ferrarichat.com/forum/showthread.php?t=53351. I believe it's the same one you pointed to UConn Husky. Thanks for the links, I was also interested in understanding if just the tensioner needs to be removed and if there are any tricks. Thanks.
     
  5. UConn Husky

    UConn Husky F1 Rookie

    Nov 11, 2006
    4,425
    CT
    Full Name:
    Jay
    #5 UConn Husky, Jun 11, 2008
    One tip is the tensioner gap should be 2.5mm; before you remove anything slide a pin or wire through the hole into the tensioner piston rod (not sure if that's the official name) to hold position. I ended up having to take the whole tensioner off to compress it in a vice for reinstall.

    Also as Ernie said check timing before (and after) the belt change using a dial indicator.
     
  6. mparz

    mparz Rookie

    Jul 25, 2005
    10
    Upstate NY
    Full Name:
    Mike Parzych
    #6 mparz, Jun 11, 2008
    Thanks, that makes a lot of sense, I'll look for that tonight!
     
  7. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,620
    The Brickyard
    Full Name:
    The Bad Guy
    #7 ernie, Jun 11, 2008
    Last edited: Jun 11, 2008
    Yup that's the one I figured it was. RF128706 was nice enough to make a PDF with pictures of the removal process for the 355 guys. Here is the predecessor to that thread. http://ferrarichat.com/forum/showthread.php?t=32653 The more information we have, the more it makes it easier for the next guy to do the work, and the better informed we all are. So if you come across something that you think would make the process easier, or found a part that is cheaper, or what ever, please share it for the benefit of the rest of the guys.
     
  8. FandLcars

    FandLcars F1 Rookie

    Aug 6, 2006
    3,057
    Tempe, Az
    Full Name:
    Rick Schumm
    #8 FandLcars, Jun 11, 2008
    I'm planning to use Fat Billy Bob's "Lobe Centerline" method when things go back together. Should save lots of time and hassle! Here's a link to his excellent writeup on using a dial indicator, and then using the lobe centerline method. HTH ;)

    http://www.ferrarichat.com/forum/showthread.php?t=148917&highlight=degreeing+cams
     
  9. mparz

    mparz Rookie

    Jul 25, 2005
    10
    Upstate NY
    Full Name:
    Mike Parzych
    #9 mparz, Jun 11, 2008
    Thanks for the pointer. That even looks like something I can put together...
     

Share This Page