What to look for and expect with a Cat 550?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by jennepa, Jan 17, 2015.

  1. Jan 17, 2015 #1
    jennepa

    jennepa Bobtail Member

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    Looking to purchase a 2007 Kenworth with a Cat 550 Twin Turbo 660,000 miles, truck only pulled light loads 20,000--25,000lbs max--- anybody have any advice on what to look for and expect with this motor
     
    jennepa, Jan 17, 2015
    jennepa, Jan 17, 2015
    #1
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  3. Jan 18, 2015 #2
    x#1

    x#1 Road Train Member

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    Cherokee County, Alabama
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    I have heard of plenty of external issues on the twin turbo models as in brackets cracking,turbos going out prematurely, engine derate due to whatever,etc. they cost a logger i know plenty in repair. others will swear by them.
     
    x#1, Jan 18, 2015
    x#1, Jan 18, 2015
    #2
  4. Jan 29, 2015 #3
    Trailridr

    Trailridr Bobtail Member

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    Twin turbos use alot of fuel, and when one turbo goes out it takes out the other
     
    Trailridr, Jan 29, 2015
    Trailridr, Jan 29, 2015
    #3
  5. Jan 29, 2015 #4
    Jokingypsy

    Jokingypsy Medium Load Member

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    Have an overhead done. Check VVA's and studs in heads. See if motor has been redone yet or is it getting ready to need overhaul. I'd be cautious with that one.

    Adam
     
    Jokingypsy, Jan 29, 2015
    Jokingypsy, Jan 29, 2015
    #4
  7. Jan 29, 2015 #5
    SmokinCAT

    SmokinCAT Road Train Member

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    Really, do the turbos burn fuel on their own? The engine gets poor fuel mileage because of the programming to meet nox and soot requirements.
     
    SmokinCAT, Jan 29, 2015
    SmokinCAT, Jan 29, 2015
    #5
    magoo68, x#1, Oscar the KW and 2 others Thank this.
  8. Jan 29, 2015 #6
    Oscar the KW

    Oscar the KW Going Tarpless

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    And also because of the person holding the steering wheel, an Acert will not get good mileage if you are constantly revving the hell out of them either. And by that I mean anything over 1500, they need to be ran at lower RPM to get mileage out of them.
     
    Oscar the KW, Jan 29, 2015
    Oscar the KW, Jan 29, 2015
    #6
  9. Jan 30, 2015 #7
    russtrucker

    russtrucker Road Train Member

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    my mbn is the prototype for acert.
     
    russtrucker, Jan 30, 2015
    russtrucker, Jan 30, 2015
    #7
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