Conversion Closed deck block service


As soon as we receive your order, we will contact you to start the production of your closed deck.


    This service consists of converting your EJ25 engine case short block to a closed deck block. The block is CNC machined to accept a billet block guard made out of 6061 T6 aluminum, precisely machined for a perfect and even press fit all around. This service also requires you to provide your Subaru 2.5L engine case halves.

    Click here for more detailed information on this service


    • Inspection of new or used EJ25 Subaru engine case
    • Machining of the aluminum inserts
    • CNC milling pockets into the short block
    • Installation of the block guard
    • Resurfacing EJ25 case half deck surfaces


    • Machining of the cylinders (Bore and Honing)
    • Cleaning case of machining debris


    Contact us at the address below for any other questions.

    Additional information

    Weight 75 lbs
    Dimensions 22 × 16 × 14 in