Factory REV limiter …..

Discussion in 'Trucks [ Eighteen Wheelers ]' started by bonder45, Apr 9, 2023.

  1. bonder45

    bonder45 Road Train Member

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    So my two new trucks came with a 1700 max RPM REV limiter ….. the question is do I leave it there or push it up to 2000.

    I’ve never had one before nor do I know anything about it so looking for some feedback!
     
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  3. loudtom

    loudtom Road Train Member

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    I've never seen an advantage to pushing mine past 1500. I normally cruise 1100-1300 and 1300-1500 on long pulls or while engine braking.
     
  4. RockinChair

    RockinChair Road Train Member

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    Unless the HP peak is above 1700 there's really no point in changing it, especially if 1700 is the engine's listed governed speed.
     
  5. Dadetrucking305

    Dadetrucking305 Heavy Load Member

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    1300 is too low on an ISX or X15 in the long run.That low rpm high torque causes liner fretting and eventually dropped liners.1500 rpm and above.
     
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  6. MacLean

    MacLean Road Train Member

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    This. You start lugging those engines and they’ll start slobbering and using oil.
     
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  7. Big Road Skateboard

    Big Road Skateboard Road Train Member

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    Be easier to advise if we knew what engine
     
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  8. bonder45

    bonder45 Road Train Member

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    605/2050 X15
     
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  9. Big Road Skateboard

    Big Road Skateboard Road Train Member

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  10. bonder45

    bonder45 Road Train Member

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    No 18 speed
     
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  11. Big Road Skateboard

    Big Road Skateboard Road Train Member

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    Pretty sure they're 1900 RPM engines. I would personally, but you may not need it.

    Peak torque is @ 1000 IIRC.

    How's it geared? And where/what are you pulling?
     
    Last edited: Apr 23, 2023
    Oxbow Thanks this.
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