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Thread: A Series Engine Pistons

  1. #1
    Join Date
    Apr 2016
    Location
    Cary, NC
    Posts
    26

    Default A Series Engine Pistons

    I am building a replacement engine for my Lotus Seven America. The previous owner blew the engine, big time, with a hole in the block you can put your fist through. The one part I have had trouble finding is a set of flat top, high compression, pistons. These are for the BMC A Series 948 cc engine. It is easy to find these pistons for the 1275 cc engine, but not for the 948 cc. This is the same engine used in the Austin Healey Bugeye Sprite and I havenít had luck with the usual Sprite part resources. Please contact me if you have some or know where I might find them. Thanks!

  2. #2
    Join Date
    Nov 2006
    Location
    Higganum, CT
    Posts
    1,588

    Default

    APT should have 948cc HC pistons, maybe MiniMania too.
    Bruce

  3. #3
    Join Date
    Jan 2008
    Location
    Williamston, MI
    Posts
    68

    Default

    I believe I have two different sets - one old race prepped, another NOS, unless I sold them already! Let me do some digging. I have other 948 spares at this point as well... feel free to email me on johnd@simplesevens.org. My own 1961 Seven America is waiting for me to finish the lightweight 948 I'm building for it!
    John Donohoe
    SimpleSevens.org

  4. #4
    Join Date
    Sep 2014
    Posts
    23

    Default

    Contact Hap Waldrop at Acme Speed Shop (864-370-3000). He's a great source of information. Just give him a phone call.
    (I'm not sure of piston height, but I think the 998 piston should work with an overbore.)
    Westfield 7, Series 1

  5. #5
    Join Date
    Mar 2012
    Posts
    5

    Default

    I have a range of Spridget 948 engine parts.
    One is a complete 948 cc SCCA race engine.
    Please let me know of prospective interest.
    Doug Brown
    dssbrown@optonline.net
    #845-351-5443

  6. #6
    Join Date
    Oct 2006
    Location
    South Lyon Michigan
    Posts
    200

    Default

    Victoria British has piston sets from std all the way to .060" over for the 948 engine.
    DaveW

  7. #7
    Join Date
    Apr 2016
    Location
    Cary, NC
    Posts
    26

    Default

    The 998 Pistons will work using 1098 rods. The problem is they are .060 oversize for the 948 and race legal is no more than .047 oversize.

  8. #8
    Join Date
    Apr 2016
    Location
    Cary, NC
    Posts
    26

    Default

    So does Moss, but not flat top.

  9. #9
    Join Date
    Apr 2016
    Location
    Cary, NC
    Posts
    26

    Default

    Unfortunately they are dished, not flat top.

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