1971 Riviera 455 vacuum hose

Discussion in 'Wet behind the ears??' started by 1971Rivi455, May 17, 2020.

  1. 1971Rivi455

    1971Rivi455 New Member

    Hi Guys, Not really new just had to redo my account. I just got my carb back from being rebuilt. I know some of my vacuum lines were in bad shape. I want to stop on my way home from work and buy some hose to start replacing. What sizes should I buy a few feet of each to start replacing. I'm just trying to save some travel as I don't live real close to the parts store. Thanks for your help. Ed
     
    1971Rivi455, May 17, 2020
    #1
  2. johnriv67

    johnriv67 Well-Known Member

    5/16ths for miscellaneous lines, 3/8 for the PCV, 1/4 for the vacuum advance

    I'm sure there's others, I can't think of them right now.
     
    johnriv67, May 17, 2020
    #2
  3. 1971Rivi455

    1971Rivi455 New Member

    Thank you Sir!
     
    1971Rivi455, May 17, 2020
    #3
  4. Matt Knutson

    Matt Knutson Well-Known Member

    1/4' seems big for the vac advance
     
    Matt Knutson, May 17, 2020
    #4
    GSX 554 likes this.
  5. Smartin

    Smartin antiqueautomotiveservice.com Staff Member

    Those are all OD measurements, I would imagine.
     
    Smartin, May 17, 2020
    #5
    johnriv67 likes this.
  6. Matt Knutson

    Matt Knutson Well-Known Member

    I have not seen rubber hose sold by o.d. specs. It wouldn't be very helpful without more info. up front.
     
    Matt Knutson, May 17, 2020
    #6
    GSX 554 likes this.
  7. GSX 554

    GSX 554 Gold Level Contributor

    5/32 and 7/32 will take care of the smaller vacuum lines like vacuum advance . PCV is special hose that is reinforced 11/32 . It can also be used on the brake booster . Fuel hose will not do . It will collapse over time .
     
    GSX 554, May 18, 2020
    #7

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