Trailing arm question
#1
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I am wondering if the aluminum trailing arms from the mid 70's 911's are different from the SC trailing arms due to the wider rear track of the SC's. Thanks
#2
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I think they're the same. The easiest way to confirm is to call your dealer parts department and ask for the part number for a '74 trailing arm and the number for an '83 trailing arm. If the number's the same, so's the part... FYI: I'm not a wheel guru and have never compiled offset specs, etc., but factory info shows that such a small difference exists in the track between 2.7 liter cars and SCs that the difference could easily be made up in the wheel. As an example, a 7x16" alloy moves the track about 1" out (wider) than a 6x16" alloy. Half of that difference is half the increase in width, and half comes from a different offset. I hope this clarifies your question...
Pete
Pete
#3
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The geometry of all the aluminum trailing arms is the same. The only difference is the sway bar drop link attachment on the arm. The early al. arms (74-77) use the ball attachment, same as early steel trailing arms. After '77 (or thereabouts), they used a threaded hole. Thus, probably different part numbers.
Hope this helps,
Sherwood
http://members.rennlist.org/911pcars
Hope this helps,
Sherwood
http://members.rennlist.org/911pcars
#4
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Does anyone know of an upgrade of the trailing arms that would be cost efficient? I am asking because I have heard (and not had confirmed from other sources) that installing the trailing arms from the turbo-models of the same era would be a great improvement for NA SCs and Carreras.
#5
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Sherwood: Thanks! I was struggling with the difference (sway bar mount), which, of course, would produce a different number, even with the same shape. You hit it right on the money...
Pete
Pete