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IH Mark

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Posts posted by IH Mark

  1. My two cents  , that tractor can go to 200. this depends a lot on how and who operates this tractor. If you throw it in gear (pto) under a load and use full throttle doing so etc. you will throw parts on the ground no matter the hp. If you are in hilly ground and get the EGT to hot you will have damage.  If you are careful and bring in power slowly and run it easy shouldn't have any issues. I had a c-15 cat in my peterbilt which was putting out 775 at flywheel with light duty clutch and 13 speed. no problems ever because I was the only one using it. Every mechanic told me I would throw them on the ground, had over 500k miles on that setup when I sold it. Same with tractors our 1086 had 155 and never had a problem

  2. 16 minutes ago, Diesel Doctor said:

    I ran a lot of 1066's on the dyno and most all were set at 135 hp.

    But, the pump could have an issue.

    The delivery valves would fail and most went to 200+ hp.

    A farmer complained of high fuel consumption and was also pulling the plow deep and fast.

    I told him I could fix the issue but he will not like it and explained what was wrong.

    He said to come fix it and I did.

    When I got back to the shop there was a call for me and he was mad. He told me I killed his tractor.

    I told him it was back where it should be and if he wanted, to drive it in and I would put it on the dyno.

    He refused that and lived with it.

    He liked the additional 50+ hp but not the fuel bill. 

    Unsure if the delivery valve could partially go bad.


    we had that happen on our 1066 I was pulling a 22' 490 disc which normally was  a load. I was going a gear faster untill my Dad came out to the field because he saw the smoke and me hauling ass across the field. I asked the mechanic what he thought it was doing and he said probably around 200. It was fun but it wouldnt have been fun for long.

  3. We had an 1979 1086 , most were around 130-135 hp in my area. Ours had 155 from the day we got it. It was not modified in any way. Just wondering if anyone else had one of these? A IH mechanic told me once they put the DT 436 in a few 1086s in that year by accident making it a 1486 for the price of a 10. I never was able to find anyone else to verify that claim. We just figured we got lucky.

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