What is the sound of one piston slapping?
What is the sound of one piston slapping?
Illustration for article titled Oppo Alfa Help Requested

I know very little about vintage racing. I also know very little about historical European hill climbs. I’m wondering if the Oppo hivemind knows any history about the above and below Alfa. Specifically I’m looking for some color pictures. Thanks in advance!

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Illustration for article titled Oppo Alfa Help Requested

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