Copper washer dimensions (fuel system) | FerrariChat

Copper washer dimensions (fuel system)

Discussion in 'Technical Q&A' started by conan, Aug 19, 2018.

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  1. conan

    conan Formula Junior

    Nov 13, 2011
    389
    #1 conan, Aug 19, 2018
    Hi, just asking if anyone noted the dimensions of the copper washers in the fuel system / K jet of the 328 (euro, 1986) model?

    I have figured out there are four washers of interest:
    18 pcs 10260160 M14x10x1 mm (found it as a Fiat part)
    3 pcs 11270160 ??
    3 pcs 113910 ??
    10 pcs 14330260 ??

    Since I only have a few dimensions in my garage, the plan is to buy a box of different sizes and I want to make sure I include the washers above in the box.
     
  2. conan

    conan Formula Junior

    Nov 13, 2011
    389
    #2 conan, Aug 21, 2018
    I found out on a De-lorean page that they use the following types:

    M8x11.5 for FD, WUR, cold inj
    M10x13.5 for WUR
    M12x15.5 for fuel pump, FD

    There is no info on thickness but I assume 1mm on M8, M10 and 1.5mm on M12. I also guess M8x12 would work instead of M8x11.5.

    When refurbishing my system, I plan to take notes on what I find is different or strange.
     
  3. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    25,133
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    #3 Steve Magnusson, Aug 21, 2018
    I wouldn't be too sure that there aren't some errors in the Cu crush washers in those SPC lists -- for example, they show different PNs for US vs. euro for the connections of the injector fuel lines to the top of the fuel distributor, but both use the same banjo bolt, 113670 - and I would've guessed 10x16x1 washers. A 10x14x1 washer would probably physically work, but would be a bit undersized for a 16mm hex bolt IMO. Please do post your notes on sealing washer sizes for reference.
     
  4. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    25,133
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    #4 Steve Magnusson, Aug 21, 2018
    Need to correct myself -- the hex head size of the 113670 banjo bolt is 14mm (so 10x14x1 is correct for that one, and just a bad quicky recollection by me with too short an editing time allowed ;)), but still surprised about the different part numbers being shown for the different versions.
     
  5. 335s

    335s Formula Junior

    Jan 17, 2007
    870
    SF Bay Area
    Full Name:
    T. Monma
    #5 335s, Aug 22, 2018
    Steve-THAT is kinda weird....I agree, sure would like to know the deal there....
     
  6. 4redude

    4redude Formula Junior

    Jan 13, 2005
    726
    Fungus Corner
    Full Name:
    Brian Keegan
    #6 4redude, Aug 23, 2018
    11270160 is 12x16x1.0
    113910 is 12.25x15.5x1.5
    14330260 is 8x12x1.0
     
  7. conan

    conan Formula Junior

    Nov 13, 2011
    389
    #7 conan, Aug 26, 2018
    I opened the control pressure line to the WUR, and the washer which was fitted on my car is M10x13.5x0.85 (the two washers had some variations).

    I also received the Salvox WUR rebuild kit where they supplied washers of the same size, that is M10x13.5x0.85.

    Thanks to all responses!
     
  8. ago car nut

    ago car nut F1 Veteran
    Silver Subscribed

    Aug 29, 2008
    5,266
    Madison Ohio
    Full Name:
    David A.
    #8 ago car nut, Aug 26, 2018
    Copper washer can be re- annealed. Get them cherry red with propane torch, when they cool they are very soft.
     

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