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Thread: OMC Mod-50 pistons now available

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    Default OMC Mod-50 pistons now available

    Wiseco forged replacement OMC 49.9 Mod-50 pistons are now available. They are improved versions of the #10908 previously supplied by the late Phil McDaniel. Designed for use with the Mod-50 or RD-series (40HP) “long” con rod, these pistons include a .120” top ring land, pre-machined boost and finger ports, plus hard anodized pin bores and fire dome. Each piston kit includes wrist pin & retainer clips and steel keystone rings. Size offerings include standard (3.000” bore), +.020”, +.030”, +.040”, and now +.050” oversize. Pricing is $135 each.

    Taking orders now. Please reply with your request. Thanks,

    Tim

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    Great news Tim. Hope you get all of the support required to make this happen. Will initially take 3 sets to start the ball rolling. Sent you an E-Mail.


    Stephen Medaris

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    Default Mod-50 pistons

    Quote Originally Posted by Steves Jem View Post
    Great news Tim. Hope you get all of the support required to make this happen. Will initially take 3 sets to start the ball rolling. Sent you an E-Mail.


    Stephen Medaris
    Hi Steve,

    Thanks for your order. 18 ordered so far including yours. Will reply with delivery date later this week.

    Tim

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    Tim do you have a contact number? Can you pm me?

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    PM sent.

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    Wiseco reports pistons will be available early August. 28 committed to as of today.
    Place your orders soon to take advantage of the introductory price.

    Tim

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    Default +.065" bore pistons now available!

    Quote Originally Posted by Tim Kurcz View Post
    Wiseco reports pistons will be available early August. 28 committed to as of today.
    Place your orders soon to take advantage of the introductory price.

    Tim
    Breaking news: +.065” oversize Mod-50 replacement pistons now available!

    Wiseco just approved manufacture of +.065” oversize pistons for the 49.7 CI OMC loop triple. This means you can breathe new life into run-out or damaged +.040” blocks, creating a 51.9 CI monster! Bore sizes now available include: Standard, +.020”, +.030”, +.040”, +.050” and +.065”. Notes:

    1) The +0.065” piston is legal for APBA 850cc Mod and NBRA Super-E classes which share a maximum +0.070” bore size. Minor file fitting of +.065” piston rings required.
    2) Pistons require use of OMC Mod-50 (3/4” pin bore) or RD-Series 40 HP (5/8” pin bore) “long” connecting rods. “Skinny needle” wrist pin bearing conversion kits are required for the 5/8” pin bore RD-Series 40 HP connecting rods.
    3) The Mod-50 replacement piston includes a flat top fire dome design that requires use of the 70 HP service cylinder head with pocket style combustion chambers.

    Commitments through June 1 will be at the introductory price of $135/piston kit which includes the Wiseco forged aluminum piston with hard coat anodized pin bores & fire dome, wrist pin & retaining clips, and semi-keystone steel piston rings. So don’t delay; place your order now!

    Best of luck with your engine projects,

    Tim

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