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  • UCF Machine Shop has been family owned since 1980. Find out more about Denny Knaub and the beginnings of UCF Machine Shop here.

    Diesel or gas, we know engines! Find out more about our experienced team here.

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    Performance Diesel Rebuilds
    Ford PowerStroke® 32-Valve Head

    One of the most popular diesel engines on the market today is the Ford PowerStroke diesel. Powering Ford's medium-duty and full size truck line, the PowerStroke was the result of a partnership between Ford and Navistar (International Truck Engine Group ) which introduced an indirect injection diesel in 1982. In 1994, when direct injection and turbo charging were introduced, the PowerStroke was born.

    The PowerStroke came with 2 valve heads until 2002, when Ford changed to a four-valve design. We have put together a photo story of a typical 4-valve-head rebuild.

    Precision machining with exceptional detail paid to tolerances assures a tighter mechanical seal between valves and valve seat, and fuel delivery efficiencies that exceed those of today's factory engines. This results in more horsepower, more torque, and better fuel economy.

    The combination of UCF Machine Shop's skilled machinists and our use of the highest quality parts will give you a stronger, better performing diesel.

    Step 1

    We begin by thoroughly cleaning, pressure testing and magnafluxing the cylinder heads. We remove the springs, valves, sensors, etc. and begin resurfacing the head. Notice the discoloration between cylinders 2 & 3 in the last 2 photos. Ford heads tend to develop slight warpage on the fire-deck over time, causing a loss of compression in the middle cylinders. We resurface the heads flat to ensure an optimum head gasket seal.

    Step 2

    Once the head has been resurfaced, it is ready for the O-Ring grooves to be machined for each cylinder. Individual measurements are taken for each cylinder, matching the cylinder with the gasket for a precise fit.

     

    Step 3

    4 O-Ring grooves are machined into the head. Stainless steel O-Ring material is individually cut and hand-fitted for each cylinder. O-Rings are carefully press-seated into the machined grooves for each cylinder.

     

    Step 4

    The head is ready for final cleaning and inspection. The head is cleared of any remaining metal residue with compressed air. Exposed metal receives a fine coat of protective oil and the external surfaces are given a coating of heat resistant paint.