So we always use hardened, surface ground parallel washers. For mains or rods, never a split lock or even a wavy washer as I've seen both break, especially, if re-using a split lock. Having said that, for all critical apps, such as main bearing caps, rods, cylinder heads, flywheels, clutch components, et all, I try to use modern fasterners. I point this out because in my business hardware originality (in appearance) is important for the history of the car and judging events, Maserati is different again.and of course the French and Germans had their ways. For rods and mains they used cotter pinned castle nuts. Early Alfa is different, they used split lock washers over a similiar beveled flat washer. If it was a steel component, then only the star washer was used. Our problems deal not only with good fastening systems but also retaining original appearance.įor example, early Fiat (up to ~ '53) used internal star washers over a beveled flat washer when fastening a nut on a stud to hold an aluminum component. We're in the business of restoring classic italian sportscars (mostly pre '55) which includes Maserati, Alfa Romeo, Fiat derivatives, etc.
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