Quote:
Originally Posted by Dieselwrencher
I think I'll get used to it because the D80 is still stronger than a 14 bolt.
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Oh, I don’t know about that. I work for a truck manufacturer and we see plenty of Dana 80’s break all the time. Much more so than we ever saw on the old Corp 10.5 14 bolt FF that later became an American Axle 10.5" 14 bolt FF. Everything from side bearing retainer bolts breaking to axle flange bolt heads popping off, shearing off, hubs cracking, etc. We never saw any of those problems on a 14 bolt FF.
Below is the most common failure I see on my fleets running D80’s. The axle shaft bolts shears off in the hub. I never understood why Dana builds this big beefy axle with huge shafts, etc then uses the same little tiny 7/16 bolts at the axle flange that they use on a D60 and 70. These little bolts are the fuse of the entire axle. Heck, the 14 bolt FF had ½ axle flange bolts! Compare them next time you have a chance. Ring gear wise, the D80 is a beast! Good stuff. I wouldn’t go as far as to say it is stronger than a 14 bolt FF though.
