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piston ID

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RSman4ever
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2013/12/16 11:45:28 (permalink)
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piston ID

Just took the head off a 2.0 pinto and im after some info on the marking stamped into the pistons so I know what rings to order
 
                                                                            RA2526X 1.00
                                                                              TOP 0.04 B1
 
They have flat tops but on the side facing the front of the engine there is a small V shape notched into each one, whats that for?
 
Thanks
#1


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    RS 2000
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    Re: piston ID 2013/12/16 13:23:23 (permalink)
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    Front marker, think of it as arrow facing front.

    Cheers

    1979 RS 2000 - SR20DET
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    #2
    RSman4ever
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    Re: piston ID 2013/12/17 08:10:23 (permalink)
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    what does 1mm over take the displacement out to? if 90.7mm is standard bore size, 91.7mm wouldn't quite get you to 2100cc would it?
    #3

    MK1_Oz
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    Re: piston ID 2013/12/17 13:54:04 (permalink)
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    Standard is 90.82mm as far as I recall making 1994cc.  +1mm takes the capacity to 2038cc but I am not sure if +1mm means exactly a 91.82mm piston
    #4
    fahley
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    Re: piston ID 2014/05/21 14:16:38 (permalink)
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    RSMan did you find out what ring to buy ? Im building a Pinto with the same piston ID. Where did you end up getting your rings from ?
    Cheers
    Fahley

    http://www.classic-ford.org/cfp/tm.aspx?m=44166&high=
    #5
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