Quote:
Originally Posted by twincamRob
My old S2000 had a steel driveshaft without a carrier bearing as well as my VG30 swapped S13. Not to mention about every pickup truck out there...
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The S2K shaft is about half the length of the BRZ/FR-S shaft and that is a very important factor to consider. Most pickup driveshafts are about twice the diameter and roughly the same length as our driveshafts, which is also something to take into account. I don't know about what I assume to be a custom driveshaft you were using in your S13, but there will always be an exception to everything.
The problem with a one piece heavy steel shaft is that it will vibrate and flex if the OD and wall thickness cannot support the weight. Maybe I should rephrase what I posted earlier. A one piece steel driveshaft in the BRZ/FR-S is not feasible because the tunnel is too narrow to house a shaft that would be thick enough to support it's own weight and you would be reducing performance by switching to a heavier shaft.
-Zach