Why does everyone love NP205's? They are strong and 90% of the people who use 205's today mate it with a doubler box to get good range options but I did learn quite a few downsides after setting one up in my rig and thought I would share.
I notice the aftermarket flanges are machined at 2.125 and it happens to be that the seals are 2.125. It makes a shitty seal and driving down the highway the thing would leak. After doing research I noticed most seals are undersized compared to the yoke about .015. I did find a speedi-sleeve to put over a brand new yoke to enlarge the yoke seal surface .011 which hopefully will solve that issue (haven't put many miles on it yet since that fix) not a big deal but I have never seen that complaint before but when I started asking people with 205's they just said oh yeah, they always leak out the output seal on the road after the seal has some miles on it....
MPG. I don't give two shits about mpg but I do care about range driving to and from the trail on longer trips. My fuel range took a huge hit going from a chain case to a 205. I get it, its thicker oil, way more drag, etc and I was expecting some loss but losing anywhere from 20-30 miles per tank on the highway is a big hit and way more then I expected. With the range of 220 miles to begin with that is the difference between me running out of fuel in remote areas of NV vs. not running out of fuel. The fuel stops are few and far between in Eastern NV. I thought I would lose 5-10 miles per tank. I did ask others who drive their rig to and from the trail and they reported anywhere from 1-3 mpg loss depending on highway vs city driving. 1-3 mpg loss when you start with 10 mpg is CRAZY!! How do you take a 10-30% loss in MPG?!?
Shifting. I have a cable shifter (maybe thats my problem?) but damn I was excited to have the ability to do a front dig with ease but the damn thing is a PAIN IN THE ASS to shift. I did add adjustable detents and am trying some techniques to help make it easier but I am told its more of an issue with the non synchro gears from research.
Anyways, I see some pros like cost vs an atlas or hero case but its not as big as one would think once you factor in the doubler.
Pure strength, I don't think there is any question that an NP205 is stronger then an atlas. U4 cars have had their issues with Atlas t cases (they did come out with a race case to fix this) but some U4 cars are running 205's without issue. Mountain Havoc guys run 900 hp through them and are pushing 50+in AG tires and 7-8k lbs in weight with no issue. I think the 205 without a doubt wins this spot everytime. If you need pure strength this is the way to go.
I don't have experience with atlas cases but if you need more strength then a chain case but not pushing 800 hp and 54s you can probably use the atlas without issue. It may be worth the added expense if the atlas doesn't have the listed issues above.
I understand some of the issues are more street driven issues but can still be a PITA when moving at speed to and from the trail.
Curious if I will be ridiculed and called a pussy or if these are legit 205 issues no one talks about. 🖕😀🖕
I notice the aftermarket flanges are machined at 2.125 and it happens to be that the seals are 2.125. It makes a shitty seal and driving down the highway the thing would leak. After doing research I noticed most seals are undersized compared to the yoke about .015. I did find a speedi-sleeve to put over a brand new yoke to enlarge the yoke seal surface .011 which hopefully will solve that issue (haven't put many miles on it yet since that fix) not a big deal but I have never seen that complaint before but when I started asking people with 205's they just said oh yeah, they always leak out the output seal on the road after the seal has some miles on it....
MPG. I don't give two shits about mpg but I do care about range driving to and from the trail on longer trips. My fuel range took a huge hit going from a chain case to a 205. I get it, its thicker oil, way more drag, etc and I was expecting some loss but losing anywhere from 20-30 miles per tank on the highway is a big hit and way more then I expected. With the range of 220 miles to begin with that is the difference between me running out of fuel in remote areas of NV vs. not running out of fuel. The fuel stops are few and far between in Eastern NV. I thought I would lose 5-10 miles per tank. I did ask others who drive their rig to and from the trail and they reported anywhere from 1-3 mpg loss depending on highway vs city driving. 1-3 mpg loss when you start with 10 mpg is CRAZY!! How do you take a 10-30% loss in MPG?!?
Shifting. I have a cable shifter (maybe thats my problem?) but damn I was excited to have the ability to do a front dig with ease but the damn thing is a PAIN IN THE ASS to shift. I did add adjustable detents and am trying some techniques to help make it easier but I am told its more of an issue with the non synchro gears from research.
Anyways, I see some pros like cost vs an atlas or hero case but its not as big as one would think once you factor in the doubler.
Pure strength, I don't think there is any question that an NP205 is stronger then an atlas. U4 cars have had their issues with Atlas t cases (they did come out with a race case to fix this) but some U4 cars are running 205's without issue. Mountain Havoc guys run 900 hp through them and are pushing 50+in AG tires and 7-8k lbs in weight with no issue. I think the 205 without a doubt wins this spot everytime. If you need pure strength this is the way to go.
I don't have experience with atlas cases but if you need more strength then a chain case but not pushing 800 hp and 54s you can probably use the atlas without issue. It may be worth the added expense if the atlas doesn't have the listed issues above.
I understand some of the issues are more street driven issues but can still be a PITA when moving at speed to and from the trail.
Curious if I will be ridiculed and called a pussy or if these are legit 205 issues no one talks about. 🖕😀🖕
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