Briggs and Stratton V-twin intek 20hp Failure
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    Briggs and Stratton V-twin intek 20hp Failure

    Hi All

    My Engine on my Scotts/John Deere 2046H was back firing so I started investigating - after adjusting the valves, cleaning the carb, checking coils etc i was still getting the popping.
    So I decided to strip her down and this is what I found - the governor shaft was broken in half.

    My question is the block salvageable given the aluminum guide in the block is all messed up?

    Thanks,
    Adrian
    Attached Thumbnails Attached Thumbnails 20180507_214927_1525756489492.jpg  

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    Here's some pics of the block
    Attached Thumbnails Attached Thumbnails 20180507_213916_1525756640887.jpg   20180507_213717_1525756682472.jpg   20180507_213747_1525756729119.jpg  

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    Keeper of the GTT Cookies dieselshadow's Avatar
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    Is the hole oblonged? A machine shop can bore it out and install a bushing for you if it is. It’s an option.
    etcallhome likes this.
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    xcopterdoc's Avatar
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    The major problem here is I don't think you can buy just the pin. The pin is pressed into the block. It must remain solid and the gear spins on it.

    Sent from my LGL52VL using Tapatalk

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    Quote Originally Posted by xcopterdoc View Post
    The major problem here is I don't think you can buy just the pin. The pin is pressed into the block. It must remain solid and the gear spins on it.

    Sent from my LGL52VL using Tapatalk
    Yup I can't seem to find the pin for sale anywhere !

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    Actually I think the biggest problem is the damage to the block.

    Although I don't know firsthand the cost of the parts or labor involved, which you would need to know to make a rational decision on what to do, I can point out that it is possible to repair. As already mentioned, you can have a machine shop make a bushing for you. It depends on the material, but a press fit for a part this size will be on the order of 0.0001-0.001 undersized. There are tables that, for a given material, tell you exactly how much undersized a part needs to be to achieve various degrees of fit based on the size of the part. The issue is that the block will need to be drilled out for the bushing and with those tolerances it will need to be done with a radial drill or milling machine to keep everything rock solid and aligned.

    Al
    Last edited by AlKozak; 05-08-2018 at 01:12 PM.

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    Does anyone here know if the intek V-twin blocks are interchangeable?
    My block is a 406777 and I found a block on Ebay - 445777

    Thanks
    Adrian

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    Bump

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    No the 40 means 40 cubic inches and the 44 is 44 cubic inches. Same basic block but with a bigger bore so your pistons are smaller.

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    You could have a machine shop bore it and make it a slip or press fit. However why does it look like there’s the remanence of a needle bearing there to me? Maybe it’s just the photo. From the photo the bore honestly doesn’t look that bad just the top of it. Is the rest of the bore ok?

    Upon further inspection maybe it does look bad.
    Last edited by Herminator; 06-15-2018 at 02:15 PM.
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