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  1. #1

    Join Date
    Nov 2004
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    1

    Default 1949 8N Tractor


    I have had my tractor for about 2 years. Just recently it started burning lots of oil. When the cutting season ended I took the head off. Lots and lots of carbon. I removed the side plates and found one of the cast housing for the tappet was broken. This is part of the block. I could see into the crankcase. Not a big hole, but big enough. I feel like that is where the oil is coming from. Being that this is part of the block, does that mean that I have to replace the block or is there some kind of a repair that can be done? I am new in the tractor arena and have an awful lot of questions.
    I can use all the help I can get. [img]/forums/images/graemlins/confused.gif[/img]

  2. #2
    Super Star Member
    Join Date
    Aug 2001
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    11,496
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    Upper Midwest USA
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    JD 4300, JD X485 JD 4x2 Gator, JD 425, JD455

    Default Re: 1949 8N Tractor

    Welcome to the forum. Hang tight, as there are some real experts on here that will give you some good advice.
    My limited take on what you found, would be finding a used block. But hopefully there is a better (meaning cheaper) solution that can be tried.

  3. #3
    Veteran Member
    Join Date
    Sep 2004
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    2,336
    Location
    Kansas, Butler county, Just east of DooDah
    Tractor
    Kubota L4200 GSTCA

    Default Re: 1949 8N Tractor

    Hello…
    You might look into something like High temperature epoxies… Something like, http://news.thomasnet.com/fullstory/26300 The place you have this hole, is it an area that is under pressure, or that will need machining? These are all considerations in the choice of repair procedures. If it is strictly a barrier an epoxy like JB weld should work. KennyV.

  4. #4
    Silver Member
    Join Date
    Oct 2004
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    142
    Location
    Burks Falls, Ontario
    Tractor
    yanmar 195D (for sale)

    Default Re: 1949 8N Tractor

    The hole you found should just allow oil to drain back to the sump. Doesn't sound like it would inhale oil into cylinders. That said, IF that break extends to the cylinder wall, which may be hard to see, THEN you will burn oil. It would probably be fixable, but once done you'll end up rebuilding the engine. So if that turns out to be the proble, suggest you bit the bullet and purchase rebuilt engine and do it right. [img]/forums/images/graemlins/shocked.gif[/img]

  5. #5
    Epic Contributor Soundguy's Avatar
    Join Date
    Mar 2002
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    Central florida
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    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: 1949 8N Tractor

    The N's had cylinder liners, so that clack probably isn't extending into the combustion chamber.. or he'd have a ton of blowby..

    My bet is an oil control ring broke. Oem they had 4 rings.. 2 compression.. 2 oil control.. What usually happened is one oil control ring starved the other one anyway.. besides that you have the wear and tear of 4 rings on the jugs. New kits have 3 ring pistons.

    Hard to say what the problem is without looking at the block.. but good used blocks are only about 325$ and readily available ( front or side mount).. ( 48 is a front mount ).

    Soundguy

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