How important is detailed machining in building a competitive engine? The folks at Federal
When it comes to racing engines, the performance potential begins well before the first green flag. The time spent in preparation can result in time spent in Victory Lane.
The Federal-Mogul Technical Education Center wanted to see how effective it would be to put the emphasis on preparation. Richard Kearns, the system curriculum training manager, headed the project. No exotic parts were used. A major difference for this engine is the extensive and immaculate preparation. To help accomplish the meticulous work, a wide range of high-quality Sunnen machines in the tech center were put to work. The work was done by students at the center. Remember, you will need to consider outsourcing costs for work you are unable to do within your own shop when considering a build-up like this.
It's understood racers will look for any advantages they can find. If racers can find a horsepower advantage through a little extra prep work, most are more than willing to invest the time and effort. We followed the build-up of this claimer engine, which will be presented in two parts. The first part will be short-block machining and preparation. Next time, we'll look at valvetrain preparation and engine assembly. You'll be able to make your determination on the project's overall success when we show you the dyno numbers.
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A ton of time was spent just on block preparation. Many builders either paint the lifter v
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All the oil galleries in the block are drilled out to 1/2-inch to increase flow and elimin
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The oil passages between the cam journals and the crank mains are opened up to 5/16-inch.
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The oil pan rails are machined minimally (0.003- to 0.005-inch) to provide a good baseline
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The main registers are measured to make sure the main caps fit properly. The register shou
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Once the registers are measured, the caps can be milled to the perfect size. Remember to t
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After the main caps are cut to fit the register, they are torqued into place to be line bo
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The cam journals are also align bored and then honed so the final size is 2.030 inch. Fede
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The cam bore oiling groove has to be cut back in after enlarging the bores. This is done b