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King pins bushings12/26/2023 ![]() After careful consideration and thorough design of our chassis, it was decided that we would need to use a pair of Speedway Motors 3-3/4-inch dropped steering arms to clear the framerails of our one-off tube chassis. It was in decent shape, the kingpin and spring perch bores looked good. Recently, we sourced an original Henry Ford V8-60 front axle for our Project Potvin roadster. Once the register of the spindle seats fully into the backing plate and the card stock can be slid between the two surfaces, you’re good to go. Thankfully, there are solutions to even the most clapped-out early Ford axle, one of which bears little resemblance to the old bushing Ford kingpin design.Ĭheck Out: Cool Looks & Hot Performance A piece of card stock works as a good indicator to check the clearance as it gets close. This makes the job of the restorer/rebuilder that much more difficult. Oftentimes, the wear that first attacked those brass bushings, moved on to attack the axle, hogging the kingpin bores out to an undesirable shape. That means buying an old axle at the local swap meet can be a bit of a gamble. But many early Fords were driven into the ground, scrapped, and then scavenged for useful parts. Caught early, it was a simple manner of installing new brass bushings, honing them to match the kingpins, and reassembling the frontend. ![]() Years of regular use eventually wear the softer brass bushings down, allowing the spindle-to-kingpin clearance to increase, resulting in negative handling characteristics. ![]() A couple more minutes with a smaller sander will get things perfect before we paint. Put simply, a kingpin attaches solidly to the straight axle via a lock pin and the spindle rotates around the kingpin on brass bushings.Ĭheck Out: 1966 Impala SS Packs 850hp LSA Punch & Roadster Shop Chassis A 4-inch grinder with a 120-grit flap wheel made pretty quick work of clearancing our spindles, while still keeping things relatively smooth. Over time this is usually the spot that has seen the majority of abuse and is one of only a few items on an early Ford frontend that requires any kind of maintenance. When it comes to restoring an early Ford frontend or solving any of those aforementioned issues, most attention is usually paid to the area of the kingpin.
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