1. Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!
  2. ALL NEW MEMBERS READ THIS FIRST!! Thank you for joining Heavy Equipment Forums! If you are new to forums we communicate with "Threads", please search our threads to see if your topic may have already been answered and if not then click "Post New Thread" in the appropriate forum. This will allow all of our members to see your question and give you the best chance to be answered. After you've made a number of posts you will graduate to Full Member status where you'll see a few more privileges. Following these guidelines will help make this the best resource for heavy equipment on the net. Thanks for joining us and I hope you enjoy your stay!!

Cat 320 excavator with cummins engine

Discussion in 'Excavators' started by 312King, May 1, 2010.

  1. 312King

    312King Well-Known Member

    Joined:
    Mar 14, 2008
    Messages:
    118
    Location:
    Wauconda IL
  2. dynahoescott

    dynahoescott Well-Known Member

    Joined:
    Feb 19, 2009
    Messages:
    154
    Location:
    new jersey
    engine swaps

    Yes, that was interesting but the wildest swap I ever saw was a 3-53 detroit in a cse 850 c track loader.:beatsme
     
    DMiller likes this.
  3. ddigger

    ddigger Senior Member

    Joined:
    Jan 19, 2009
    Messages:
    567
    Occupation:
    contractor,owner operater
    Location:
    Northern California
    I know a guy who did that as well.
     
  4. Jam

    Jam Well-Known Member

    Joined:
    Nov 11, 2009
    Messages:
    209
    Occupation:
    Building contractor
    Location:
    Cork, Ireland
    Hows it going....that is some amount of work! Are the air vents on the side panels to suit the cooling of the new engine? Any ideas why go to all this work are the mitz engines very expensive to repair?
     
  5. John C.

    John C. Senior Member

    Joined:
    Jun 11, 2007
    Messages:
    11,313
    Occupation:
    Machinery & Equipment Appraiser
    Location:
    Northwest
    I've heard that it is not easy to get the Mitsubishi engine at all. I would assume the Cummins might be cheap enough to make the swap over cost effective. Now though there are plenty of inexpensive excavators on the market. Why go to all the bother of the change.
     
  6. faurbina

    faurbina New Member

    Joined:
    May 4, 2010
    Messages:
    1
    Location:
    Colombia
    I'm the owner of this excavator. I swapped the 3066 engine (Mitsubishi) because I repaired it six times!! The engine was ok until the first time we repaired it (worked about 12.000 hours) but, after that, I started to lose money, time and patience... Wasting money in one Block (I put a new one U$11.000), two Cramshafts, Injectors, etc, etc.. I have others Cat equipments, and I never have had throubles with the Engines... I guess this case is because this is a japanese engine built by Mitsubishi..
     
  7. Jam

    Jam Well-Known Member

    Joined:
    Nov 11, 2009
    Messages:
    209
    Occupation:
    Building contractor
    Location:
    Cork, Ireland
    Lovely job....was there much head scratching and machining to get it working?
     
  8. gasfield315c

    gasfield315c Well-Known Member

    Joined:
    May 4, 2009
    Messages:
    161
    Occupation:
    build gaswell locations in the steeper than a mule
    Location:
    pineville, wv
    i think everything should have a cummins in it...when that 320's tracks and boom wear out and fall plum off, you could take the engine out and put it in another one and keep running it. A place i used to work at had a grove crane with a 6BT cummins in it, and the radiator had a hole in it the size of a baseball, i was driving it to another job one day and the engine got so hot it locked up, we let it cool off for about an hour, put some more water in it and it fired right back up, as far as i know its still working, and that has been 5 years ago
     
  9. cummins05

    cummins05 Senior Member

    Joined:
    Jan 3, 2009
    Messages:
    430
    Location:
    Edmonton
    Thats a nice swap of a ppump 12valve non intercooled engine
     
  10. anthony0488

    anthony0488 Active Member

    Joined:
    Mar 21, 2011
    Messages:
    26
    Location:
    New York
    Hi, we are trying to do the same swap for the same reason, what are the good and bad things while swap is done and after in the long run? Thanks
     
  11. justin spangler

    justin spangler Member

    Joined:
    Feb 1, 2019
    Messages:
    9
    Location:
    Baton rouge, louisiana
    Hey I would like to revive this old thread. Has anyone else done this .My 3066 took a dump the other day and I'm considering this swap .Was anyone able to find a flywheel that bolted right up or did you have to Fab one?
     
  12. TVA

    TVA Senior Member

    Joined:
    May 14, 2018
    Messages:
    2,178
    Location:
    USA
    I think you can keep your old flywheel, just adopt the flex plate to it, check out https://www.hayescouplings.com.

    Still gonna need to match bellhousing to pump drive flange.
     
  13. justin spangler

    justin spangler Member

    Joined:
    Feb 1, 2019
    Messages:
    9
    Location:
    Baton rouge, louisiana
    I was able to find a bell housing to fit the cummins to fit my pump it's an SAE3.
    Nice Used Takeoff Cummins 5.9 B Series SAE #3 Flywheel Bell Housing 3959804 OEM https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/163124282640

    My concern is that my current flywheel is a 6 bolt with 2 allignment studs and the Cummins is an 8 bolt with 1 allignment stud.

    Has anyone else actually done this conversion? If so any tips or tricks would be greatly appreciated.
     
  14. TVA

    TVA Senior Member

    Joined:
    May 14, 2018
    Messages:
    2,178
    Location:
    USA
    Does the Cummins have a flywheel?
    If it does - then think about how to adapt your pump shaft to it.
     
  15. justin spangler

    justin spangler Member

    Joined:
    Feb 1, 2019
    Messages:
    9
    Location:
    Baton rouge, louisiana
    The cummins I'm getting doesn't have the flywheel. I thought about buying one of these and then figuring out how to adapt to mine.

    Flywheel New to fits Cummins 4B 4BT 4BTA 6B 6BT 6BTA SAE3 3973747, 130422X, C397 https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/132610612961

    Current flywheel
    IMG_20190301_182845_03.jpg IMG_20190301_121234.jpg IMG_20190301_182845_03.jpg IMG_20190301_121234.jpg IMG_20190301_182845_03.jpg IMG_20190301_121234.jpg
     
  16. TVA

    TVA Senior Member

    Joined:
    May 14, 2018
    Messages:
    2,178
    Location:
    USA
    And what coupling is on yours? There’s the chance it will fit right in.

    People even adapting keyed shafts, it’s doable.
     
  17. justin spangler

    justin spangler Member

    Joined:
    Feb 1, 2019
    Messages:
    9
    Location:
    Baton rouge, louisiana
  18. TVA

    TVA Senior Member

    Joined:
    May 14, 2018
    Messages:
    2,178
    Location:
    USA
    I am involved in the work on Italian made Ascom travel lift which gets new power pack. The Iveco engine and obsolete Brevini pump gets replaced with 6bt and Sauer Danfoss pump, reason being - it is a PITA to get parts for OEM! And owner can’t afford to have that machine down for more then a couple of days. Cummins and Sauer Danfoss parts readily available, longest lead time is overnight!
     
  19. kashif786

    kashif786 New Member

    Joined:
    Mar 4, 2019
    Messages:
    1
    Location:
    doha qatar
    hello everyone I'm kashif...my excavator 320b cat automatically monitor panel off now not working what will do
     
  20. Stanley P’articklesz

    Stanley P’articklesz New Member

    Joined:
    Apr 12, 2019
    Messages:
    2
    Location:
    Ghana
    So were you able to swap it cause I also want to do same with my 320bl with a Mitsubishi engine for a Cummins engine but been think of how the Cummins engine will adapt to my hydraulic pump
    More info on how you were able to do that