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Perkins 404C22 Idle speed and WOT

JJM · 2023-01-20 07:39

Does anyone know the factory spec for idle speed and WOT rpm on Perkins 4 cylinder 50 hp diesel non turbo ? Assume the adjusting nut for the throttle cable to adjust the lever so it sits on the factory stop. ?

Replies6
  1. #1thepumpguysc2023-01-20 10:55

    What’s the pump #.??get #’s off name plate.. DO NOT SCRAPE IT

  2. #2JJM2023-01-20 11:15
  3. #3thepumpguysc2023-01-20 11:56

    I googled it and found 3000 rpm hi idle no load.. Guessing at 400 low idle

  4. #4thepumpguysc2023-01-20 12:25

    U can expect a 10% drop in rpm at full load..

  5. #5JJM2023-01-22 20:40

    Thanks 400 low idle seems ridiculously low. I don't think it could even idle below 900-1000. Are you sure ?

  6. #6thepumpguysc2023-01-22 22:59

    Sorry about that.. that’s pump speed.. 800engine rpm But it’s just a guess..8-900 is about right..