They haven't been available for the TJ Dana 35 since Superior went out of business however many years ago. At least 6 that I know of or can recall, could be more or less but that about what I remember.Were they around up to a about a year ago?
They haven't been available for the TJ Dana 35 since Superior went out of business however many years ago. At least 6 that I know of or can recall, could be more or less but that about what I remember.Were they around up to a about a year ago?
I just want to add that it wasn't really you and your problems that brought all that on. There was just some some extra "jumping on" hoping to find a reason to criticize that didn't sit right with me. Not you.No I actually said that I followed his guidance but it was my own fault for not doing more research.
Back on track... I tried everything I could to remove the drum on the other side but it was stuck solid. I called around for a drum puller but no one rents one so I ended up coming with a home made oneView attachment 92605
So what aftermarket 27 spline axle does everyone recommend?
This is going to be hard to say and explain, without looking like I'm attacking someone, but I'm not.So you're blaming Jerry because you only read what he posted a year or more ago and ignored everything else that says 1541h is the way to go? Don't base any decisions on one dude's opinion. The 1541h recommendation is everywhere. I've only had a jeep less than 6 months and i know 4340 in the front (Dana 30), 1541h in the back (Dana 35).
And in reality the failure that occured here really had nothing to do with the problem 4340 has in this application. 4340 is strong stuff, it's just not hard enough to run bearings on. This looks like a heat treat/strength problem to me, not hardness. In fact, the only reference i found in a 20 second google search says the ultimate strength of 4340 is higher than 1541h.
This is going to be hard to say and explain, without looking like I'm attacking someone, but I'm not.
I've researched Dana 35 upgrades a number of times over the years, and came across a lot more than one thread, on several forums where Jerry did strongly recommend 4340 Dana 35 shafts (no mention of C clips or eliminators). Because I tend to research things until they start driving me crazy, I eventually saw one thread where Blaine corrected Jerry, and stated 4340 was what you want for Dana 44 axles, but not Dana 35's. Then stated as fact that 1541H is the way to go for Dana 35's with an in depth explanation as to why.
I believe at that time Jerry stopped recommending the Dana 35 4340 axle, but his recommendations are already out there, and far exceeded the recommendations for 1541H. We've all been wrong on a forum, but when many people assume a certain well known member is always right, well then this can happen.
Jerry meant well, and I assume because 4340 was the ideal alloy for Dana 44's, he assumed it was for Dana 35's also, but apparently that isn't true. If one were to Google search the topic, you'll have to spend some time doing it, because 4340 will surely show up more as GTG than 1541H, and people will usually follow the first few consistant things they see.
For what it's worth, it was this explanation here in the thread mentioned that helped me choose the 1541H axles for my 8.8. Blaine's explanation was awesome, and being that the bearing rollers ride directly on the shafts in my 8.8, the 1541H axles were the way to go. However, they're not going in my TJ, they're going in my Lincoln Town Car. Good information crosses all kinds of borders!@89grand is correct. Below is the post from Blaine that explains the differences between 4340 and 1541H and why 4340 is not a good choice for the Dana 35 (post is from Mar 2018). I had it bookmarked when Blaine shared that since it was very valuable information.
https://wranglertjforum.com/threads/upgrade-Dana 35-axle-shafts.9482/post-147171
@Chris you should add this to the FAQ or the how-to area.
I'm not sure why the info didn't show up, but I've known about the difference and why you use them in various applications since I designed the Super 88 kit for Superior. I know I've mentioned it a lot earlier than a couple years ago. I'm also not convinced that 4340 is the ideal material for rear Dana 44 shafts. I know for a fact that 4140 is much cheaper and it rarely has a problem when done correctly. And as we can see from what Crown did, using buzz words to sell stuff is popular but not always good.This is going to be hard to say and explain, without looking like I'm attacking someone, but I'm not.
I've researched Dana 35 upgrades a number of times over the years, and came across a lot more than one thread, on several forums where Jerry did strongly recommend 4340 Dana 35 shafts (no mention of C clips or eliminators). Because I tend to research things until they start driving me crazy, I eventually saw one thread where Blaine corrected Jerry, and stated 4340 was what you want for Dana 44 axles, but not Dana 35's. Then stated as fact that 1541H is the way to go for Dana 35's with an in depth explanation as to why.
I believe at that time Jerry stopped recommending the Dana 35 4340 axle, but his recommendations are already out there, and far exceeded the recommendations for 1541H. We've all been wrong on a forum, but when many people assume a certain well known member is always right, well then this can happen.
Jerry meant well, and I assume because 4340 was the ideal alloy for Dana 44's, he assumed it was for Dana 35's also, but apparently that isn't true. If one were to Google search the topic, you'll have to spend some time doing it, because 4340 will surely show up more as GTG than 1541H, and people will usually follow the first few consistant things they see.
@89grand is correct. And he is not attacking anyone!
Below is the post from Blaine that explains the differences between 4340 and 1541H and why 4340 is not a good choice for the Dana 35 (post is from Mar 2018). I had it bookmarked when Blaine shared that since it was very valuable information. That forum post is the original source of the photo that Jerry (correctly) shared in this thread in the right context.
https://wranglertjforum.com/threads/upgrade-Dana 35-axle-shafts.9482/post-147171
@Chris you should add this to the FAQ or the how-to area. The 4340 recommendations for Dana 35 far out number the 1541H ones sadly, which has lead people astray. But atleast going forward, we can do better.
I am none of those but the answer is very simple as to why one is correct and one isn't. Some steel alloys are through hardening like 4340 and some are case hardening like 1541H. The issue with through hardening alloys is if you get the surface hard enough to run a bearing on, it is difficult to draw the core back down to a ductile state to reduce brittleness. The general solution is to keep them ductile which produces the worn groove you see above.My simple mind remembers only the following from the many threads I've read on axle shafts and conversations with axle builders both in the offroad and drag racing worlds and what I have in my '06 Rubicon:
Front Dana 44 - 4340 chromoly
Rear Dana 44- 4140 chromoly
From my notes:
Dana 30 front - 4340 chromoly
Dana 35 rear - 1541H, not 4140 or 4340.
I will leave it to the engineers, metallurgists, axle builders, and other professionals to explain why. That is above my pay grade.
Mr. Bills said:. . . I will leave it to the engineers, metallurgists, axle builders, and other professionals to explain why one material is preferred over another. . . .
I am none of those . . . .
Now I'm confused, I thought RG&A was the bee's knees.
I'm not trying to debate company standings, it's just confusing with all these numbers flying around. I do not see any situation I'll come close to breaking the shafts I have. You just want to assume "Made in USA" is the best you can put your money on.It is a good company