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  1. #11
    Light Load Member bean farms's Avatar
    Member Since
    Feb 2011
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    red boiling springs tn
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    3 Years
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    ive thought bout that but i find it odd that it runs so good with no boost


  2. #12
    Bobtail Member
    Member Since
    Aug 2011
    Location
    brownwood tx.
    Trucker?
    14 Years
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    I have a freightliner with a big cam 400 cummins deisel engine in it. It keeps overheating with a load. What could be the cause?

  3. #13
    Light Load Member bean farms's Avatar
    Member Since
    Feb 2011
    Location
    red boiling springs tn
    Trucker?
    3 Years
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    it could be the thermostats a lose belt bad fan clutch if it has one and not a straight fan is the radiator clean inside and out does it ahve a low flow cooling system i had a autocar with lowflow cooling system on it and it always got hot on the hills but i have a western star now and it has high flow and it never gets hot

  4. #14
    Bobtail Member
    Member Since
    Mar 2012
    Trucker?
    15 Years
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    Quote Originally Posted by bean farms View Post
    i have a a 400 big cam in a dump truck and the turbo has a 27cm ex. housing on it and it spools at 1900rpms and then it only build 18 pounds of boost i have a 23cm ex. housing im wanting to put on it i was wondering what kind of differance whould i see performance wise and all around differance it would make good and bad
    Try cleaning the hoses from the manifold or boost gauge and were it comes thru the fire wall will sometime get clogged. Also if it also has an adapter connector on block against fire wall may be clogged can give you a false reading

  5. #15
    Bobtail Member
    Member Since
    Mar 2012
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    My NTc 400 big cam 3 go's up and down 3/4 to 1 tomato idle all the time anyone know what may be causing this?

  6. #16
    Bobtail Member
    Member Since
    Mar 2012
    Trucker?
    15 Years
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    Rpm. Sorry

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