Coolant hose dia under plenum (308) | FerrariChat
Buy

Coolant hose dia under plenum (308)

Discussion in 'Technical Q&A' started by Meister, Apr 27, 2006.

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

  1. Meister

    Meister F1 Veteran
    Silver Subscribed

    Apr 27, 2001
    5,516
    Duluth, MN
    Full Name:
    The Meister
    #1 Meister, Apr 27, 2006
    Anybody know off the top of their head the diameter of the short coolant hose under the plenum on a 308? Looks to be in the 1 3/4" to 2" range...

    Also, while I'm in there any need to upgrade to a high temp material or just go with over the counter stuff?

    Thanks.
     
  2. Doc

    Doc Formula Junior

    Sep 13, 2001
    886
    Latham, New York
    Full Name:
    Bill Van Dyne
    #2 Doc, Apr 27, 2006
    I used 1 5/8" hose for my '85 308. Napa Gold Stripe is the brand I used. It was very thick-walled, high quality stuff. Some guys allege using 1 1/2" hose, but I couldn't get that size to fit on my car. The 1 5/8" was easy to install for that location and worked out fine. I used double clamps all the way around to insure a leak-free seal.
     
  3. Meister

    Meister F1 Veteran
    Silver Subscribed

    Apr 27, 2001
    5,516
    Duluth, MN
    Full Name:
    The Meister
    #3 Meister, Apr 27, 2006
    Thank you!
     
  4. cavallo_nero

    cavallo_nero Formula 3

    Nov 3, 2003
    1,707
    colorado
    Full Name:
    Giovanni Pasquale
    #4 cavallo_nero, Jun 5, 2007
    I am replacing the coolant hose coupling that comes up from underneath the car right before the front bank on the 308 - the coupling is right behind the oil separator for the crankcase breather system. I can get to it by removing the driverside rear wheel. Is this hose 1 5/8 inner diameter also???
    thanks
     
  5. Pizzaman Chris

    Pizzaman Chris F1 Rookie

    Mar 13, 2005
    3,919
    New Hampshire
    Full Name:
    Pizzaman Chris
    #5 Pizzaman Chris, Jun 5, 2007
    Last edited by a moderator: Sep 7, 2017
  6. cavallo_nero

    cavallo_nero Formula 3

    Nov 3, 2003
    1,707
    colorado
    Full Name:
    Giovanni Pasquale
    #6 cavallo_nero, Jun 6, 2007
    I replaced the bad coolant coupling hose, those hoses are 1.5 inch ID, it is a tight fit, but works well. the 1 5/8 ID hose looked a bit sloppy with to much clearance. i used NAPA straight hose....
     
  7. jwise

    jwise Formula Junior

    Apr 2, 2003
    781
    Portland Maine
    #7 jwise, Jun 6, 2007
    I use the same thing. 1-1/2" goes on fine with a little coolant for lubrication.
    There is radiator hose grease designed for this, or even a little lithium grease will be o.k.
     
  8. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    26,930
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    #8 Steve Magnusson, Jun 6, 2007
    (If I may be allowed a small joke) The Designer didn't specify 1 1/2" or 1 5/8" hose -- it's metric! ;)

    Seriously, I believe the stock size is 38mm (1 1/2"), and it is a b*tch to get on in some places. 41mm (1 5/8") works OKish (and is a heck of a lot easier to get on), but you're relying more on compressive forces from the clamp for a good seal compared to the 38 mm (but it's not a huge point).
     
  9. BigTex

    BigTex Seven Time F1 World Champ
    Owner Rossa Subscribed

    Dec 6, 2002
    79,398
    Houston, Texas
    Full Name:
    Bubba
    #9 BigTex, Jun 6, 2007
    Just check out the metric hoses for Euro cars....at the NAPA or the closet VW dealer of your choice!

    Very good point 91tr.......
     
  10. RVIDRCI

    RVIDRCI Formula 3

    Dec 1, 2005
    1,576
    Long Beach / Phoenix
    Full Name:
    Luigi
    #10 RVIDRCI, Jun 7, 2007
    41 mm (1 5/8") Gates green stripe. Quality, thick wall, flexible, Bulletproof, easy install, use premium quality stainless steel wide band clamps.

    my .02
     
  11. smg2

    smg2 F1 World Champ
    Sponsor

    Apr 1, 2004
    16,396
    Dumpster Fire #31
    Full Name:
    SMG
    #11 smg2, Jun 7, 2007
    meteric is a PITA find however if you're into silcone :D then Pegasus has your number. they stock the metric hose, I bought 3ft and sent the left over 1.5 ft to another F-chatter.

    the real PITA is the fuel filler hose on the Mondial and 3x8's. don't even get me started on that one.
     

Share This Page