Cold Air Intake system for 2012 V6
#21
The driveshaft failures have been an issue since '05...at least on the V6 cars. The earlier cars had a 112mph setting on the speed limiter. A one piece aluminum driveshaft is a good investment. Part of the problem is the design of the 'shaft itself... The slip joint (for lack of a better word) is right in the middle of the driveshaft instead of at the front end, like most cars. This may be acceptable on a 4X4 truck, but on a "sports" car, it's a bad idea. I also think there are some driveline angle issues (perhaps pinion angle), as I have already had to replace the rear u-joint on my aftermarket driveshaft.
Something else to consider... If you intend to add lower gears to the rear end, and I highly recommend you do (the 3.7 is a screamer and would respond very well to a set of 3.73s or 4.10s), the speed at which a failure will occur will be considerably lower. With lower gears, the driveshaft speed will be higher for any given MPH.
Something else to consider... If you intend to add lower gears to the rear end, and I highly recommend you do (the 3.7 is a screamer and would respond very well to a set of 3.73s or 4.10s), the speed at which a failure will occur will be considerably lower. With lower gears, the driveshaft speed will be higher for any given MPH.
#25
Yes, a one piece should be fine. The issue seems to be mainly with the V6 cars, as the GTs use a hanger bearing that adds a bit of support. Immediately after changing mine, I noticed a big drop in vibration at speed, the car was smoother, and seemed to pick up a little faster (the 4" aluminum 'shaft was 10 lbs lighter than the stock piece). I have been running a one piece driveshaft for 2 years now without any major issues. I did pick up a slight vibration towards the end of last year and that was fixed by changing the rear u-joint a couple of weeks ago. I believe this was caused by a pinion angle issue, but haven't measured it yet, 'cause without picking up an adjustable upper control arm, I can't change it.
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