The crankshaft to flywheel adapter, bellhousing adapter, and engine mounts all needed to be custom-made for this build. I designed everything, drew up blueprints, and sent the bellhousing adapter design to a machine shop for fabrication.
I decided to manufacture the crankshaft to flywheel adapter myself in my home shop, but first I needed to develop custom tooling in order to hold tighter tolerances necessary for a correct balance.
To maintain correct centerline alignment, I first modified a machinable fixture collet with several concentric stepped ridges, that would perfectly correspond to both sides of the finished adapter. In this way, I could remove and reinstall the adapter multiple times and maintain perfect alignments every time.
Next, I drilled a center hole and bolt pattern holes into the piece, and tapped them all with the correct sizes, to give me multiple methods of fixing the adapter to the plate during machining. With the fixture complete, it was time to start manufacturing the adapter.
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