Push hard and live
Join Date: Apr 2007
Location: Carson City, NV
Your explanation is correct and admirably succinct.
I should add that, among my steering box parts, one of the input shafts (inside the worm) is smaller than the others. Not by much, but enough that fitting a different worm results in a non-interference fit.
I can't really tell you the origin of all my boxes. One came on my car, which is a 59 2000, and if I recall right it has a 3 ridge roller/sector gear. My memory could be wrong. Two other boxes were bought when and as-found. I have since purchased two used-but-good-looking worm and roller sets. All for LHD Alfas. It seems quite possible that an early 2000 might have originally had a 2 ridge sector, but subsequently repaired with a 3 ridge unit. Both exhibit similar wear, so if one was an effort to cure the weaknesses of the other, it may not have succeeded.
Carson City, NV
59 102 Touring (first Alfa $500 running)
65 Sprint GT (2nd Alfa, $500 daily driver)
102 Sprint (never did anything with it, but wish I had)
74 Berlina (first new car - now certainly rusted into oblivion)
61 Giulietta Spider G-Prod Race Car (where is it now?)
84 Spider Veloce (rarely drove it, so sold it)
86 Quadrifoglio (Dull car - no more 115s for me)
1971 Montreal "The Full Monty". Fair winds and following seas
59 102 Touring Roadster - restoration complete, enough Alfa for any rational man. Or irrational, for that matter
Two 1946 Stampe SV4C (c/n 294 "Rocinante" - wife's favorite airplane. RIP), and c/n 235 "La Bon Temps Femme" (gone to a new home, but never forgotten)
Zlin 50LA (+9 -6 gees, titanium spar, 1200 lbs, 260HP rumored to now be in Brazil)
1946 Luscombe 8A
Starduster Too (recently spotted at the Nevada City, CA airport - over 20 years and an entire continent separating it from our stewardship in Binghamton, NY)
1955 Cessna 170B (wife taught me to fly tailwheel in this)
64 Mooney M20E ("Rambo". My faithful steed for over 30 years) Nearly 50 years old, and just returned from a trip to Argentina in him
Newest in the fleet
1967 Piper Super Cub on Wipline amphibious floats (a true "all terrain vehicle")
2010 Triumph Thunderbird
You can snap roll an Alfa only one time...