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Kohler EFI VS Carburated engine

Discussion in 'Mechanic and Repair' started by Az Gardener, Jul 3, 2012.

  1. Az Gardener

    Az Gardener LawnSite Gold Member
    Posts: 3,899

    Time to make a decision. Seems the 26 efi that came on my walker is toast. options replace with same 26hp efi engine at just under 4-K from the dealer or a switch to a 23 hp carburetor engine for 2600

    Dealer tells me I will loose the computer and get a choke cable and they will need to change the wiring harness. I don't think I will notice the 3 hp loss.

    My moonlighting mechanic says he can get my exact 26 efi engine for 1800 brand new and swap it out for 250 labor, bringing me to a shade over 2-K. My question is long term would I be better off with a carburated engine or the efi?

    Or am I missing an option here?
  2. ricky86

    ricky86 LawnSite Bronze Member
    Posts: 1,840

    $4000.00 is too much. Should be about $2800.00 - 3000.00 plus frgt. $1800.0 for a complete EFI sounds very suspect. Some aren't even available anymore. I would never go down in HP.
    Keep in mind, one thing with a EFI is the way it responds to load. It has much quicker response, which make it seem more powerful than it is. Another is efficiency. If your mechanic is legit, stay with the 26.IMO
  3. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    You say your engine is toast...
    Have you checked into the price of a shortblock or miniblock?
    Posted via Mobile Device
  4. BKTP

    BKTP LawnSite Member
    Posts: 32

    piston slapper, i have heard of and utilized short blocks in rebuilds but what is a mini block if i may ask?

  5. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    A miniblock consists of a new block...pistons. .rods..rings...lifters...and a gasket set...
    Unlike a shortblock... it won't come with the camshaft..crankshaft..or engine sump..
    Posted via Mobile Device
  6. 65t

    65t LawnSite Member
    Posts: 60

    Kohler also offers a longblock for Walker CH26s. I believe it is the only longblock Kohler offers.

    From parts bulletin 251: "This long block consists of an assembled crankcase/closure plate (including all internal components) with the cylinder heads, valve covers, breather, and throttle body/intake manifold assembly installed. A new oxygen sensor and new fuel injectors w/o-rings are included, but not installed. Simply transfer the wiring harness, ECU, starter, and all other external components."

    Kohler list price is about $2100, and has a 1 year warranty.
  7. BKTP

    BKTP LawnSite Member
    Posts: 32

    never knew of that option.
  8. ricky86

    ricky86 LawnSite Bronze Member
    Posts: 1,840

    Mini blocks a rarely a viable option for any engine with more than 750-1000 hrs on it. It also has a lot to do with what the particular failure was. One of the main reason they are made is to build up a limited application engine.
  9. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    I've sold and used a bunch of them....
    The reason that they aren't popular is that most people don't have the correct tools or technical experience to properly assemble an engine...
    Posted via Mobile Device
  10. TLS

    TLS LawnSite Fanatic
    Posts: 7,940

    I would not go with the 23.

    The 23 drops down to a 675cc block. They are noticeably a less powerful engine and on a Walker, you need a lot to run the impeller and bigger decks.

    I would go the 26 efi route.

    If you do decide to go to a carb, you'd probably get a better deal on a 27hp and keep your 725cc's.

    Don't know the specifics of the spec model # needed for a Walker, so you may be very limited in your choice. Walker is the only manufacturer still using the 26 Kohler EFI, they either bought a boat load of them way back when, or Kohler spec builds them for Walker.

    What exactly is wrong with the engine that is "toast"?

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