Kohler 29 EFI?

Discussion in 'Lawn Mowing Equipment' started by MOturkey, Dec 28, 2012.

  1. Ridin' Green

    Ridin' Green LawnSite Fanatic
    Male, from Michigan
    Messages: 17,809

    I am not sure if it is still in their writings on this subject, but Kawi was stating in their little piece they had posted on their site about the Critical Power rating, that they were being tested by the group over in Germany, and engines were set up as they would be while in real applications with airbox/filter, and muffler.
  2. puppypaws

    puppypaws LawnSite Fanatic
    Messages: 9,177

    I wonder why Kohler would not follow what Kawasaki has done so everyone could be on the same page...this can be somewhat confusing to the buying public. I sure wish someone could explain the reasoning from Kohler's point of view. The end user only wishes to see in hard numbers exactly what they are paying for, and I believe this is what Kawasaki is now attempting to provide. I just have a hard time understanding why one engine manufacturer would provide hp information gathered from one testing procedure, and one from another.
  3. clydebusa

    clydebusa Inactive
    Messages: 1,660

    Have the Kohler EFI on two 72" and love it. And like several have stated will convert all to EFI eventually.
  4. puppypaws

    puppypaws LawnSite Fanatic
    Messages: 9,177

    I love the efi technology, but there have been many scared of trying efi due to fear of the unknown. I have never really understood this for the fact everyone has the same technolgy used in the vehicles they drive everyday, and would never go back to a carburetor mechanical governor setup.

    I've been running the Kohler, Bosch efi system since 2006, and have loved everything about it. The new Delphi components Kohler is now implementing are supposedly the best in the industry, the same as used in our vehicle fuel injection. I feel assured you have the new Delphi system, and once anyone ever owns and operates a mower with fuel injection, they never wish to return to the old style fuel delivery.

    I have checked a preciously owned Kohler 27 hp engine on the same mower as my 28 efi, and the fuel savings due to the fuel injection was 25 to 30% constantly. The 27 was at 1.3 to 1.4 gph, and I have checked the 28 efi down to .93 gph. The check I did was to physically measure the height of gas in the tank at full, then fill back to the exact same height by ounces; after cutting exactly one measured hour, meaning my check was very accurate.
  5. Ridin' Green

    Ridin' Green LawnSite Fanatic
    Male, from Michigan
    Messages: 17,809

    I'm not sure this will answer your question well enough puppy, but last summer one of the members here sent Kohler an e-mail while we were having a similar discussion about the new ratings system regarding Kawi's vs Kohler etc. He posted the reply from Kohler and it was something very close to this-
    "We have always rated the true hp of our engines and follow the current guidlines....etc etc", followed by something along the lines of "we continue to offer our customers the best that they can buy...." type of PR blather. Their reply got several people kinda wired up since it was a typical "cover our butt" type of reply.

    I belive they knew they'd have to eventually make the switch in rating systems to avoid losing potential sales, but have tried to make it slowly enough to be able to sell off all remaining inventory of old rating labeled engines already crated and stored. Once that supply is gone, they will most likely switch completely over to the new rating numbers. JMO
  6. ToddH

    ToddH LawnSite Silver Member
    Messages: 2,192

    At the price of gas today, how many hours do you have to run the unit to recover the up cost?
    Meaning, I am not going to sell a 1/2 used mower to get better consumption.
  7. puppypaws

    puppypaws LawnSite Fanatic
    Messages: 9,177

    It depends on the dealer price difference...I talked with the Bobcat factory and was told they did not offer the carburetor version of the big block Kawasaki for the fact from doing their own fuel study; they found a difference from 2 gph on the FX1000V (carburetor model), to less than 1.5 gph on the FX1000V-DFI (fuel injected model). They said to them this was a no brainer, especially since they got a good price break from buying so many of the DFI model.

    From what they are saying, you could expect 1/2 gph less fuel useage from the DFI, and probably more. They said some of their studies had shown a drop all the way to 1.25 gph.

    Lets just use the 1/2 gph less consumption as an example.

    8 hr. cutting day you would save 4 gal., this times, lets say $3.50 would equal a savings of $14 per day. Say you can run 32 weeks per cutting season at 40 hrs. per week, this is 32 wks. x 40 hrs. = 1280 hrs. mowing time. Saving $70 per week x 32 wks. = $2240.00 / Just saying for instance the DFI engine option cost $700.00 more than the carburetor model, it would take 10 weeks to pay the difference, but the savings from that point forward would be very significant.
  8. JDGlandscape

    JDGlandscape LawnSite Senior Member
    Messages: 513

    How are they powerwise for such a big mower? I am trying to find out if they would be powerful enough to use on a 60" cut with a bagger
  9. bboy35

    bboy35 LawnSite Member
    Messages: 1


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