News

Are there any differences between a 1985 QV engine and the 2 earlier QV years?

Discussion in 'Technical Q&A' started by proteng, Oct 4, 2009.

  1. proteng

    proteng Rookie

    Sep 22, 2008
    17
    Sarasota, Florida
    I've heard and read that the best year of the QV engines is the 1985. Is there any difference between the '85 and the other 2 earlier years' engines?...or is it just that it 'should be' the best since it was the last year built?
     
  2. To remove this ad click here.

  3. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    20,309
    Texas
    Full Name:
    Steve Magnusson
    If you mean for US versions, the "difference" is between '83 and '84-'85:

    1983 = K-Jet without Lambda, 2 cats, continuous air injection pump, cold start air valve, VLV...

    1984 & 1985 = K-Jet with Lambda (so it has an injection ECU and O2 sensor), 1 cat, pulse air injection that only operates during cold-running, no cold start air valve, throttle microswitch...
     
  4. Paul_308

    Paul_308 Formula 3

    Mar 12, 2004
    2,335
    Actually, QV engines started production in 1982 per OM 248-82.
    Steve, was there ever a lambda Euro QV?
    Anyone have a link for pdf Euro QV OM?
     
  5. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    20,309
    Texas
    Full Name:
    Steve Magnusson
    #4 Steve Magnusson, Oct 4, 2009
    Last edited: Oct 4, 2009
    No, the '82-'85 euro 308QV are all K-Jet without Lambda, no cats.

    Unfortunately, it's so big that I can't email you a copy, but I downloaded my copy from the www.ferrariowners.com site (but, lately, I haven't been able to find the OM section there -- does anyone know where to find OMs on that site?).
     
  6. Verell

    Verell F1 Veteran
    Consultant Owner

    May 5, 2001
    7,001
    Groton, MA
    Full Name:
    Verell Boaen
    Here are a few additional engine differences that come to mind:

    - Cam drive bearings are the larger size also used in the 328.
    - Metal pointers & shields instead of fiberglass rear belt covers.

    They also have these, but they may have been phased in earlier in the QV run:
    - Separate waterpump & alternator belts
    - Large bearing/small seal water pumps.
    - Cold air plenum between air box & body is quite different.
     
  7. To remove this ad click here.

  8. Paul_308

    Paul_308 Formula 3

    Mar 12, 2004
    2,335
    Once your car is registered, the pdf's are available under tab at the top "My Ferrari" then in the center of the page is 'Car Manuals'. But OM availability is limited to the car you registered.

    So how does one temporarily register another car model to get it's manual? And still not violate the sites rules.
     
  9. vvassallo

    vvassallo F1 Veteran

    Aug 4, 2006
    8,213
    Palos Verdes
    Full Name:
    Vince V
    Sweet, great info. Never knew this. Thanks.
     
  10. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    20,309
    Texas
    Full Name:
    Steve Magnusson
    Thanks for the instructions Paul -- but that is the pits (F -- if your are listening, please make all OMs available to any registered Owner again).
     
  11. FF8929

    FF8929 Formula Junior

    Apr 12, 2008
    799
    Livonia, Michigan
    Full Name:
    Fred Flynn

    My 83, Oct. Mondial QV has the seperate belts.
     
  12. To remove this ad click here.

  13. AMA328

    AMA328 F1 Rookie

    Nov 12, 2002
    2,518
    ABQ-67me68-OKC :)
    If memory serves, the early QV engines had ring(?) problems. After replacing many engines, Ferrari changed things, resulting in better engines sometime after that. Don't really remember the details, but way back when, the word was out on the early QV stuff.
     
  14. greyboxer

    greyboxer F1 World Champ

    Dec 8, 2004
    11,183
    South East
    Full Name:
    Jimmie
  15. thecarreaper

    thecarreaper F1 World Champ
    Silver Subscribed

    Sep 30, 2003
    16,461
    Savannah
    Full Name:
    I NEED A JOB
    i think you are thinking of the 2v injected cars that had gained an oil burner reputation. never seen anything about early Qvs having these issues. i have a low vin euro Qv built in 1983. the engine has never been opened and it runs superb.
     
  16. barcheta

    barcheta F1 Rookie

    Nov 15, 2003
    3,705
    I believe you are correct. In fact it was the 1980 model year specifically that had ring issues. IIRC. The QV motors are fairly reliable.
     
  17. Verell

    Verell F1 Veteran
    Consultant Owner

    May 5, 2001
    7,001
    Groton, MA
    Full Name:
    Verell Boaen
    +2

    It was the early 2V injected engines w/the problems, not the QVs.
     
  18. KatMan

    KatMan Formula Junior
    Silver Subscribed

    Apr 2, 2006
    457
    Silicon Valley
    Full Name:
    Stan K
    I had a late 82 2 valve injected 308 that had a big time oil consumption issue.
     
  19. GaryReed

    GaryReed F1 Rookie
    Silver Subscribed

    Feb 9, 2002
    3,079
    Seattle
    Full Name:
    Gary
    My '81 drank a quart of oil about every 500 miles, but my '83 QV didn't use any at all.

    I just love the sound of the true DUAL exhaust system that was only on 1983 QVs (USA).

    http://www.youtube.com/watch?v=Z45rb9iA_CQ
     

Share This Page