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  1. #1
    New User
    Join Date
    Jan 2015
    Location
    San Antonio, Texas
    Posts
    6

    Default 2.3 Cylinder Bore

    Hi All!

    I am in the process of building a few 2.3t motors and I am trying to mix and match pistons. I remember reading a thread on here about the stampings on the block next to the distributor. My engines say "3343" & "3443" etc... I know this relates to the bore size and pistons. Does anyone have any info on those stampings. I.E. "1" equals small bore, "4" equals big bore.

    Thanks,
    Rob A.

  2. #2
    New User MRausch82's Avatar
    Join Date
    Oct 2008
    Location
    Newark/Bear, Delaware
    Posts
    24

    Default

    It is probably easiest to measure the existing pistons to get the bore size. Usually the pistons will have an OS number stamped somewhere if they were replaced. When I rebuilt my 80 2.3T a little over a year ago, I had trouble sourcing the correct forged OS pistons. Ended up finding Wiseco forged 2.3 pistons.
    Mike Rausch

    1980 Capri Turbo RS

  3. #3

    Default

    Sorry I didn't know that they were even numbered like that. That is interesting. Ford did some strange stuff back then. If I was building engines, I would for sure invest in a micrometer though. Not trust the stamping on a part....especially since as mentioned above.....Ford sure did some strange stuff back then.

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