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Detroit series 60 blowby information

Discussion in 'Trucks [ Eighteen Wheelers ]' started by AUSSIE DAVE, Aug 23, 2012.

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  1. Aug 23, 2012 #1
    AUSSIE DAVE

    AUSSIE DAVE Road Train Member

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    Hi all just thought I would post some useful info about series 60 blow by figures, as I found it a little difficult obtaining same.

    New engine / rebuilt engine blowby between 1.5 and 2.0 Inch H2O is normal

    Blowby between 2.1 and 3.0 engine is still very good

    Blowby Between 3.1 and 3.9 still ok

    Blowby between 4.0 to 5.0 Engine is expected to last up to between another 120,000 to 240,000 miles or 200,000km to 400,000km

    Hope this helps someone in the future, regards Dave
     
    Last edited: Aug 24, 2012
    AUSSIE DAVE, Aug 23, 2012
    AUSSIE DAVE, Aug 23, 2012
    #1
    mdbell26, S.V.Buyck, ulenie and 5 others Thank this.
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  3. Aug 23, 2012 #2
    snowwy

    snowwy Road Train Member

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    don't know what those numbers mean.

    but any blowby is a sign of old age for the most part. cept for the slight mist of a new engine.


    i drove a dump truck for 2 years before new pistons finally got installed. that was not fun having a find a bathroom somewhere at a minutes notice.
    don't miss them days at all.

    but i don't think you're going to see blowby on todays trucks. i know govt regs were passed in 07 to keep that stuff from emitting into the atmosphere. as such. newer engines recirculate the stuff and there's no more blow by tubes.

    least the 2 2007 petes i drove with cats didn't have any vent tubes.
     
    snowwy, Aug 23, 2012
    snowwy, Aug 23, 2012
    #2
  4. Aug 23, 2012 #3
    claytonr1973

    claytonr1973 Light Load Member

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    Blow by is standard equipment on a Detroit.
     
    claytonr1973, Aug 23, 2012
    claytonr1973, Aug 23, 2012
    #3
    fortycalglock and MNdriver Thank this.
  5. Aug 24, 2012 #4
    flc120

    flc120 Heavy Load Member

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    yea most new engines recirculate the blowby back into the engines system and reburns it again.
     
    flc120, Aug 24, 2012
    flc120, Aug 24, 2012
    #4
  7. Aug 24, 2012 #5
    AUSSIE DAVE

    AUSSIE DAVE Road Train Member

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    Blowby still exists in every engine, it is a means of measuring engine wear, Detroit place truck on dyno under load and install equipment that measures the blowby, the above information were sourced from Detroit. I posted the info so that anyone purchasing a Detroit has data to figure out approximately how good or bad the engine on the truck is.

     
    AUSSIE DAVE, Aug 24, 2012
    AUSSIE DAVE, Aug 24, 2012
    #5
  8. Aug 24, 2012 #6
    Worthken

    Worthken Light Load Member

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    It doesn't make sence if we don't have anything to compare it with. The figure is great, but how was it measured? Psi, Kpa?
     
    Worthken, Aug 24, 2012
    Worthken, Aug 24, 2012
    #6
  9. Aug 24, 2012 #7
    AUSSIE DAVE

    AUSSIE DAVE Road Train Member

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    Inch of H2O , ok if you are looking at buying a truck with a series 60 in it and the truck yard already has had a blowby test done ( some here in oz do blowby on all trucks they sell) you can use the figures to work out if the engine is good.

     
    AUSSIE DAVE, Aug 24, 2012
    AUSSIE DAVE, Aug 24, 2012
    #7
    Worthken Thanks this.
  10. Aug 25, 2012 #8
    snowwy

    snowwy Road Train Member

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    what also doesn't make sense is that fact you can't measure it. becuase it's recirculated into the engine. meaning no blow by tubes anymore.

    i know ALL engines have blowby. there's no such thing as the perfect seal. that's why there's no more blowby tubes. it's all recirculated.

    guv law passed in 05 written for 07 and newer. they don't want that crap venting into the atmosphere.
     
    snowwy, Aug 25, 2012
    snowwy, Aug 25, 2012
    #8
  11. Aug 25, 2012 #9
    AUSSIE DAVE

    AUSSIE DAVE Road Train Member

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    They can still test, they use the dipstick tube or filler tube
     
    AUSSIE DAVE, Aug 25, 2012
    AUSSIE DAVE, Aug 25, 2012
    #9
  12. Aug 25, 2012 #10
    Oscar the KW

    Oscar the KW Going Tarpless

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    Hmmm...... Then why does my buddies 07 Pete with a cat have a blow-by tube?
     
    Oscar the KW, Aug 25, 2012
    Oscar the KW, Aug 25, 2012
    #10
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