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  1. #21
    New Member
    Join Date
    May 2011
    Posts
    4
    Tractor
    IH Farmall H

    Default Re: Troy-Bilt Horse engine swap

    Quote Originally Posted by Lloyd_E View Post
    6.5 hp $207 with taxes in.
    Need to adopt a new throttle cable and sharpen tines.
    Tires need air plus I have an extra reversing wheel that I may install.
    The old engine was a 7hp kohler.

    TIA
    Were you able to swap the engine without taking the tiller apart? Your pics look like it, though my manual shows quite a bit of disassembly to remove the engine. You could access the engine mount bolts and remove and install the pulley? I just picked up a 6.5 Predator engine from Harbor Freight, it replaces the now discontinued Greyhound. I'm going to work on it tomorrow.

  2. #22
    New Member
    Join Date
    May 2011
    Posts
    4
    Tractor
    IH Farmall H

    Default Re: Troy-Bilt Horse engine swap

    Quote Originally Posted by Nhuskys View Post
    Were you able to swap the engine without taking the tiller apart? Your pics look like it, though my manual shows quite a bit of disassembly to remove the engine. You could access the engine mount bolts and remove and install the pulley? I just picked up a 6.5 Predator engine from Harbor Freight, it replaces the now discontinued Greyhound. I'm going to work on it tomorrow.
    It can be be done! I swapped it out today and it went pretty well. I'm glad I has a 1/4" drive flex screwdriver to get around the pulley to finish taking out and start the mounting bolts. I broke the reverse disc taking it off and you could never access the mounting bolts with it on. New motor uses a 5/16-24 bolt instead of original 3/8" one on shaft to hold pulley. No way my engine mount pins were coming out, doing it the way the manual describes to change engine. I have to run to get bolt for pulley and then add oil and gas. I hope to be tilling in a few hours.

  3. #23
    New Member
    Join Date
    May 2011
    Posts
    4
    Tractor
    IH Farmall H

    Default Re: Troy-Bilt Horse engine swap

    It works like a charm, I got the whole garden done. I did make a jumper wire to disable the low engine oil switch, as it didn't like the tilt angle when deep tilling. I can't believe I was ready to spend way too much money on a new tiller and dump this 1972 one. Thanks to this site for inspiration.

  4. #24
    Member
    Join Date
    Jun 2011
    Posts
    25
    Tractor
    troybilt tiller

    Default Re: Troy-Bilt Horse engine swap

    i have a 1979 Troybilt Horse, 7 hp Kohler engine that could use something better. Been thinking of Harbor Freight 6.5 Predator my be the answer, but not sure how to go about it.

    Do i need to check the engine mounting bolt pattern or size? Are these things all the same on Horse tillers?

    thanks

  5. #25
    New Member
    Join Date
    Sep 2002
    Posts
    17

    Default Re: Troy-Bilt Horse engine swap

    I believe the different motors do have different bolt patterns. Best to measure and be sure.

  6. #26
    Super Member 5030's Avatar
    Join Date
    Feb 2003
    Posts
    5,106
    Location
    Michigan, S.E. Monroe County
    Tractor
    Kubota M9000 Hyd Kubota M105 shuttle

    Default Re: Troy-Bilt Horse engine swap

    My old Kohler just keeps running. I prefer cast iron over pot metal anyway. When it finally goes south, I'll bolt on a Yanmar Diesel or a Hatz.
    A couple Kubota's and some payment books.....
    "If haying was easy, everyone would do it. It isn't."

  7. #27
    Member
    Join Date
    Jun 2011
    Posts
    25
    Tractor
    troybilt tiller

    Default Re: Troy-Bilt Horse engine swap

    Quote Originally Posted by D40 View Post
    I believe the different motors do have different bolt patterns. Best to measure and be sure.
    thanks. Never measured a bolt pattern for an engine, any clues you could give me.

    HF gave me a 25% coupon for July 4 sale. Maybe i can get a new engine for this old Horse. It currently has a 1979 Kohler 7hp engine.

  8. #28
    Elite Member
    Join Date
    Jul 2007
    Posts
    3,303

    Default Re: Troy-Bilt Horse engine swap

    Nhuskys is the guy to ask if the new predator engine will interchange since he just did the swap. You could always send him a PM and ask to be sure.

  9. #29
    Silver Member
    Join Date
    Jun 2011
    Posts
    117
    Location
    Esparto,Ca.
    Tractor
    Ford 1720

    Default Re: Troy-Bilt Horse engine swap

    Just got thru reading the posts on the Eng.swap please tell me are you still happy and have you done any extensive work with it yet? was it a simple swap did everything tie and line up without any mod work, does your horse have one belt or two belts? Would you PLEASE tell me all that you can and remember about the swap. Nice job and I would like to do it. If you want you can E-mail me my e-mail is twoone@sbcglobal Thank You, Paul

  10. #30
    Elite Member
    Join Date
    Jul 2007
    Posts
    3,303

    Default Re: Troy-Bilt Horse engine swap

    I have a HF sales flyer for their tent sale August 26-28 showing the 6.5 hp Predator engine for $99.99 item no. 68120 (no. 68121 in California). The flyer says inside track club members get access to the sales items one hour before the general public. Haven't been to one of their tent sales in years--so I'm not sure if this means members get admitted to the sale one hour earlier or not. Some have used coupons to knock the sales price down further, too.

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