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  1. #1
    Bronze Member
    Join Date
    Aug 2012
    Posts
    89
    Location
    Bowling Green Kentucky
    Tractor
    Massey 135

    Default Installing piston rings on Z-145 continental gas engine

    I am installing new piston rings on new pistons for my Massey 135 rebuild. The shop manual says the rings on this engine are "tapered" and marked "top" to show direction of ring on piston. The rings I have do not look tapered at all and have no markings for "top". I am thinking those type of rings are not being used on these rebuilds but I am not sure and don't want to get the engine together and find out otherwise. Can someone advise.

  2. #2
    Gold Member
    Join Date
    May 2012
    Posts
    294
    Location
    Gidgiegannup Springs, Western Australia
    Tractor
    Massey Ferguson 148 .Chamberlain Super 70. Caterpillar D4. Chamberlain 354 FEL.Toro 268 rideon kubota L2002fel

    Default Re: Installing piston rings on Z-145 continental gas engine

    G'day Forester Massey.
    The first thing and one of the most important things is to check the piston ring fit in the cylinder bore then the ring clearance on the piston using your manual to help ,take your time and do this carefully.
    Regardless if the rings are genuine or aftermarket they should come with the instructions for fitting although you will find different manufacturers have different types of rings so it is important to install the rings as per the instructions that should be in the box with the rings.

    I feel it is worth mentioning that when fitting the rings to the pistons they are cast and will break very easily if over stretched ,you will find it a lot easier to use a piston ring expander .
    Thats all I can offer at this stage.
    Regards.
    Hutch.

  3. #3
    Bronze Member
    Join Date
    Aug 2012
    Posts
    89
    Location
    Bowling Green Kentucky
    Tractor
    Massey 135

    Default Re: Installing piston rings on Z-145 continental gas engine

    Thanks Hutch:

    I decided to make a visit to the machine shop. The shop manual said the top ring was beveled but it is not. Only the second and third ring are and they have a marking at the top indicating such. I have it figured out. I bought new pistons, cylinders and rings of course. Thanks for your help.

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