Jeep Wrangler Forum banner

1 - 20 of 32 Posts

·
Registered
Joined
·
3,136 Posts
Discussion Starter #1
I have a lower rear control arm bushing that's showing signs of needing replaced, so I figure now is a good time to just replace all my control arms. My Dad put Rusty's adjustable rear uppers on his '06 Rubi, and they looked good to me. I'm thinking I'd like to stay with clevite bushings. What's wrong with Rusty's arms? Most things I read about them are negative. FWIW I'm running 2" BDS springs, and don't intend on going any higher.
 

·
Registered
Joined
·
8,952 Posts
I'm thinking I'd like to stay with clevite bushings. What's wrong with Rusty's arms? Most things I read about them are negative.
think about the design of the stock arms.

- stamped sheet metal, with bushings on both ends...right?

now go flex your Jeep out, and look at those arms along their long axis.

You'll notice the whole arm twists in torsion, as well as flex the bushing itself....and the stock travel is fairly meager, so the misalignment requirements are pretty small.

Now, take a look at how Rusty's arms are designed.

-bushings on both ends...but what's connecting them together is a rigid steel tube. no more torsion along the long axis like stock.

So what does that mean?

the bushings have to do all the twisting/deflection themselves, and especially on a lifted Jeep with more travel than stock, those bushings get twisted too much. you may even rip the mount off the axle.

Now, how do you fix that problem?

Well, get a control arm that allows major deflection. How? some sort of flex joint.

Ok, now what's a good flex joint that lasts a long time? Well, thats the Currie Johnny Joint.

ok, now what arms use a Currie Johnny Joint? Savvy is one manufacturer, but there are a few more as well.
 

·
Registered
Joined
·
3,136 Posts
Discussion Starter #4
think about the design of the stock arms.

- stamped sheet metal, with bushings on both ends...right?

now go flex your Jeep out, and look at those arms along their long axis.

You'll notice the whole arm twists in torsion, as well as flex the bushing itself....and the stock travel is fairly meager, so the misalignment requirements are pretty small.

Now, take a look at how Rusty's arms are designed.

-bushings on both ends...but what's connecting them together is a rigid steel tube. no more torsion along the long axis like stock.

So what does that mean?

the bushings have to do all the twisting/deflection themselves, and especially on a lifted Jeep with more travel than stock, those bushings get twisted too much. you may even rip the mount off the axle.

Now, how do you fix that problem?

Well, get a control arm that allows major deflection. How? some sort of flex joint.

Ok, now what's a good flex joint that lasts a long time? Well, thats the Currie Johnny Joint.

ok, now what arms use a Currie Johnny Joint? Savvy is one manufacturer, but there are a few more as well.
Ah, so the stock arms need to be weak, basically. Or, at least not rigid. So I'd be better off with new bushings in the stock arms (or new stock replacements) than I would with a rigid arm with rubber bushings..
 

·
Registered
Joined
·
2,362 Posts
I got some adjustable Tera lowers I could get ya pretty cheap....
 

·
Registered
Joined
·
2,362 Posts
These twist in the middle so they flex some besides the bushing deflection, it's not a JJ but they aren't $300 a pair either.... Served me well for 2 years.
 

·
Registered
Joined
·
2,362 Posts
Much more flex, much better joint, smoking deal on them.
 

·
Registered
Joined
·
3,136 Posts
Discussion Starter #12
Here's the deal- I need rear lower bushings. Seems silly to replace with stock when I want to upgrade at some point, but money is tight right now. If money weren't an issue, I'd just order 8 Currie arms and be happy.:)
 

·
Registered
Joined
·
3,524 Posts
Rustys says they use Clevite bushings. The two bushings on the left are Rustys and have about 5k street miles on them. The bushing on the right is a stock Clevite bushing that was on the same vehicle for 20k miles. I'm no fan of real Clevite bushings but I'd take them over any imitation bushing and just about any second-rate flex joint. Either go with stock replacement arms or Currie JJ's. It's that simple. Wasting $600 on an inferior set of arms is much more foolish than spending $1000 wisely on parts that will last for years and years with no maintenance at all. Anyone who disagrees with that doesn't know the first thing about the true meaning of value and FTQ.

 

·
Registered
Joined
·
1,180 Posts
buy new stock replacement arms and be done with it.
RockAuto Auto Parts
Ya, the current stock ones lasted what, 12 years? If you are on limited funds, stock replacement arms should serve you well until you are ready to upgrade.

I'm sure you have access to a good press... if your arms are OK, you can just get the replacement clevite bushings for even less. Press the old ones out, new ones in...
 

·
Registered
Joined
·
3,136 Posts
Discussion Starter #16
Ya, the current stock ones lasted what, 12 years? If you are on limited funds, stock replacement arms should serve you well until you are ready to upgrade.

I'm sure you have access to a good press... if your arms are OK, you can just get the replacement clevite bushings for even less. Press the old ones out, new ones in...

Yes, of course I have a press. I can see it from right here.:) For the price of stock replacement arms from Rock Auto, though, it seems silly not to just buy them. That said, I guess I'm going to give some "lightly used" Teraflex arms a try. Price was right, so I'll try them out. By the time I decide I don't like them, if I do, the money spent will be a distant memory..:D
 

·
Registered
Joined
·
3,524 Posts
Yes, of course I have a press. I can see it from right here.:) For the price of stock replacement arms from Rock Auto, though, it seems silly not to just buy them. That said, I guess I'm going to give some "lightly used" Teraflex arms a try. Price was right, so I'll try them out. By the time I decide I don't like them, if I do, the money spent will be a distant memory..:D
Not to dissuade you from a purchase it sounds like you already made nor to insult on DevilDog, but if these are the arms I'm thinking of.....



....they're about as crappy as they come and are basically joked about in the Jeep community. Stock arms are much better.
 

·
Registered
Joined
·
3,136 Posts
Discussion Starter #18
Yeah, too late now. He said "they served him well" so I figured they'd be OK. I guess I'll try them, and plan on ordering some stockers. 'Course by then I could have almost bought a pair of Curries.
 

·
Registered
Joined
·
3,136 Posts
Discussion Starter #19
Actually they're a bit different than those. Two zerks on the arm itself, etc. I don't know. Teraflex has been selling them for at least 14 years or so..

 
1 - 20 of 32 Posts
Top