Where to source intake manifold butterfly valve shaft bushes? | FerrariChat
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Where to source intake manifold butterfly valve shaft bushes?

Discussion in '360/430' started by bob224, Apr 13, 2016.

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  1. bob224

    bob224 Karting

    Nov 6, 2013
    56
    Australia
    #1 bob224, Apr 13, 2016
    Last edited by a moderator: Sep 7, 2017
    Trying to source set of intake manifold butterfly valve shaft bushes for the 360 (bit of play in butterfly valves).

    Tech believes these may be Dellorto (Dellorto is written on some parts around this assembly). End of the following blog post seems to suggest these are Weber standard carburetor parts although speaking to Weber dealers locally they're unable to identify a part):
    https://aldousvoice.com/2013/01/07/ferrari-360-air-intake-system/

    Close up picture included, have circled the bush which you can just see (bush is metal).

    These parts don't appear in Ferrari parts diagrams. Any feedback on where these can be sourced would be be of great assistance.
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  2. mwstewart

    mwstewart F1 Rookie

    Feb 5, 2014
    2,751
    England
    Full Name:
    Mark
    #2 mwstewart, Apr 14, 2016
    It would be unusual to find a mix of Weber and Dellorto parts on the same throttle, so given you found Dellorto stamped components I would first give them a try.

    My suspicion is that Ferrari have the bushes turned themselves and 'sweated' into the manifold, with the rest of the throttle being made from off-the-shelf bits from Dellorto. If that is the case and they are not listed on the parts diagram, you would need a set turned up and fitted.

    My first port of call would be Dellorto.
     
  3. bob224

    bob224 Karting

    Nov 6, 2013
    56
    Australia
    #3 bob224, Apr 14, 2016
    Aldous (author of blog) has kindly pointed me here for a source of the bushes. Initial measurements of bush on car seem to match with this source (self lubricating & manufactured with a steel shell with a sintered bronze layer filled with PTFE):
    Bearings | Split Bearing Bushes | BU Bush | Metric

    Now to find a source for the orings that sit on these shafts!

    Tech ended up finding both Weber and Dellorto parts in the intake manifold!
     
  4. mwstewart

    mwstewart F1 Rookie

    Feb 5, 2014
    2,751
    England
    Full Name:
    Mark
    #4 mwstewart, Apr 14, 2016
    Excellent. When you said bush I assumed the throat section of the manifold surrounding the plate. Glad you got the part.
     
  5. Yellow02Z06

    Yellow02Z06 Karting

    Nov 2, 2013
    213
    #5 Yellow02Z06, Sep 12, 2019
    bob224 I have same issue - had a little noise and after reading the Aldous blog post I tried manually opening the valves and it quited down - anyway you can post up some more info on the parts and steps reuired to do the refurb of the shafts / etc. ? Thks!
     
    mferrari43 likes this.

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