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Cummins vs. Paccar

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by spindrift, May 1, 2019.

Page 1 of 2
  1. May 1, 2019 #1
    spindrift

    spindrift Road Train Member

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    Yeah, another one...
    I've seen a view threads that speak to performance, but that's all.

    Last weekend I stopped to take a gander at a truck that's for sale. No specific info, just a contact number which I called. When I asked what it had for power, the guy said it's a Paccar, "but you know, it's the same as a Cummins". I laughed a little to myself and left it at that. I believe there isn't much of a difference, besides paint color, between a medium duty Cummins and a Paccar. As far as heavy duty engines go, I believe the two share the same block but I'm not sure where things go from there.

    So, what are the specific design/manufacturing/component differences between the ISX and the MX?
     
    spindrift, May 1, 2019
    spindrift, May 1, 2019
    #1
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  3. May 1, 2019 #2
    swaan

    swaan Road Train Member

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    I'm not 100% sure but I think the only thing the mx and isx share is the after treatment bs. The engines have nothing in common.
     
    swaan, May 1, 2019
    swaan, May 1, 2019
    #2
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  4. May 1, 2019 #3
    pushbroom

    pushbroom Road Train Member

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    Completely different engines. Aftertreatment is supplied by cummins for both
     
    pushbroom, May 1, 2019
    pushbroom, May 1, 2019
    #3
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  5. May 1, 2019 #4
    Goodysnap

    Goodysnap Road Train Member

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    VGT is Holset and the same as IS-X15 but grey. Otherwise nothing except aftertreatment.
     
    Goodysnap, May 1, 2019
    Goodysnap, May 1, 2019
    #4
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  7. May 1, 2019 #5
    spindrift

    spindrift Road Train Member

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    Seems to be some misinformation out there.
     
    spindrift, May 1, 2019
    spindrift, May 1, 2019
    #5
  8. May 1, 2019 #6
    swaan

    swaan Road Train Member

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    Maybe. But the info you got here is correct.!
     
    swaan, May 1, 2019
    swaan, May 1, 2019
    #6
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  9. May 1, 2019 #7
    daf105paccar

    daf105paccar Road Train Member

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    I assume you are talking about the 15L ISX and a MX13?
     
    daf105paccar, May 1, 2019
    daf105paccar, May 1, 2019
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  10. May 1, 2019 #8
    spindrift

    spindrift Road Train Member

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    Right! I wasn't clear.
     
    spindrift, May 1, 2019
    spindrift, May 1, 2019
    #8
  11. May 1, 2019 #9
    Rounded_nut

    Rounded_nut Light Load Member

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    Top of my head biggest difference is Cummins is overhead cam, paccar is pushrod, oh and the paccar don't spontaneously window the block because the fuel pump grenade.
     
    Rounded_nut, May 1, 2019
    Rounded_nut, May 1, 2019
    #9
  12. May 1, 2019 #10
    Cat sdp

    Cat sdp . .

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    No they’ll spin a bearing........
     
    Cat sdp, May 1, 2019
    Cat sdp, May 1, 2019
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