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Detroit Diesel 453

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  • Gene Bickford
    started a topic Detroit Diesel 453

    Detroit Diesel 453

    I have A Detroit Diesel 453 (1980ish)
    The plate reads
    MAX RPM: NL 02550

    Am I correct in assuming the NL stands for 'no load'?
    And what if under load, could the 2550 RPM be exceeded safely.

    The manual says to engage load at 800 RPM and slowly bring up to WOT.
    But no mention of MAX safe operating RPMs.
    I've been stooping at 2800 RPMs but still have further to go before I reach WOT. I just don't dare to push it further

    The engine has built in overspeed protection but what if it's not working?KABOOM! And at what RPM should it work????

  • Gene Bickford
    replied
    Re: Detroit Diesel 453

    Found out that testing the overspeed "should" only run $150 at the dealership. Small price to pay to be on the safe side, so I'll be making that appt. soon.

    The problem I'm having is performance of the attachment is not what it should be. I fixed several small problems yesterday. Today I'll change the fuel filters as FIL pointed out that when he ran boats they would sometimes have brownouts even though they where getting proper rpm readings. They'd change filters and everything would return to normal.

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  • BHD
    replied
    Re: Detroit Diesel 453

    my JD tractors are 2100 at red line, 1800 at pto speed,

    http://www.adieselengine.com/new_page_1.htm
    model HP RPM
    4-53 140 2800
    4-53T 175 2500
    Last edited by BHD; 04-07-2010, 11:40 PM.

    Leave a comment:


  • G3sprinklers
    replied
    Re: Detroit Diesel 453

    most diesels are not built for high rpm, they make up for it in torque.

    The 7.3 in my old ford says not to exceed 3000 rpm.

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  • Frankiarmz
    replied
    Re: Detroit Diesel 453

    Gene, The folks at the link I'm enclosing should be able to answer your questions. My limited knowledge of diesel engines tell me not to push the rpms. Good luck and let us what you discover. Frank
    http://www.thedieselpageforums.com/t...ad.php?t=27343

    Leave a comment:

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