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      04-13-2018, 11:41 AM   #40
tom.gnade
Apex Forged 19", AA headers, MILVs, 3IM, Euro Intake, Swift Spec-R
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Drives: 2013 328i coupe
Join Date: May 2016
Location: Forest Hill, MD

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2013 BMW 328i  [0.00]
Quote:
Originally Posted by Biginboca View Post
Quote:
Originally Posted by hassmaschine View Post
the 328i uses the GS6-17BG (170NM, 125ft-lbs) - while the 330i has the GS6-37BZ (370NM, 273ft-lbs). It's rated for more than twice the torque. The 335i is rated for 530nm, and is definitely stronger, but they tend to be pretty conservative.

Actually it's a wonder the 325i/328i can get away with such a light trans (they used the same one on 4cyls, lol), but I guess BMW felt it would work just fine. But obviously with 500wtq, the GS6-17BG wasn't going to last very long..
hassmaschine where did you get the 125ft/lb spec for the 328i transmission? When I did my research before modding my car and cross referenced the BMW part numbers with the Getrag website I got a much higher figure of about 258 ft/lbs.

That is very interesting that 350nm is the limit on the transmission because I just confirmed the limp mode limit is set at right around 360nm by checking the torque limit fault code data at a shop.
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