[SouthernLion]

So I realized today that the clunking I have noticed recently when going over speed bumps, etc. is CBC. I'm glad I know what it is, but sad at the time time. Lol. When planning my setup (5100's on lowest setting with a PRG 1.5" spacer) I thought there was no way I would get CBC. Apparently I can and do.

Here are some pics of the passenger side. It seemed to be worse than the driver's side for some reason.

So what's the best option to fix it? I know a lot of you just grind off part of that lip. Is that ok just to do that, or should I take it any further to try and remedy it?

 

[ERMAHGERD]

Best option is new UCA's. But yea I wouldn't have guessed that you'd have CBC with that setup either. how much taller did you get with that set up? 2wd or 4wd?

 

[SouthernLion]

Forgot to take measurements before, so I'm not quite sure. I am a 4x4 though.

 

[Lee-the-Impaler]

I haven't had any issues after grinding the lips off, and I got really aggressive with it, went curve to curve and took it all off. I used to be one of the 'it's structural' advocates, but it seems to be just fine as is.

and yes I have the matching notches in the UCA's too. Make sure if you do grind, don't leave the bare steel exposed

 

[SouthernLion]

I'm thinking of doing a little grinding for sure, but maybe just going ahead and getting new UCA's as well.

If I do get the new UCA's, do I need to replace anything else at the same time?

 

[avmaldo]

Same thing happened to me. Bils lowest setting 1.5 spacer gave me CBC. You'll need an alignment and may need cam bolts for that. The UCAs can be a PITA to install yourself. It's not necessarily complicated, just awkward wrenching, tab grinding, and pounding on that ball joint. One mechanic I met rolled the lip down I never saw it but he said it looked better than grinding.

 

[TheHops]

I agree with the above, that new UCAs may be the best option. Not only will they involve your range for front end adjustments, but also it'll future-proof you for any other ugprades, and won't require any grinding.

When I bought my DK UCAs, I actually found the install incredibly easy. The only thing that gave me a problem was a rounded nut, but once I found the solution, the opposite side took maybe 45 minutes. The ball joints also came loose with a single tap of a rubber mallet. I may be the minority in that regard, but that was my personal experience.

TL;DR: DK or PRG UCAs. :thumbsup:

 

[avmaldo]

I agree with the above, that new UCAs may be the best option. Not only will they involve your range for front end adjustments, but also it'll future-proof you for any other ugprades, and won't require any grinding.

When I bought my DK UCAs, I actually found the install incredibly easy. The only thing that gave me a problem was a rounded nut, but once I found the solution, the opposite side took maybe 45 minutes. The ball joints also came loose with a single tap of a rubber mallet. I may be the minority in that regard, but that was my personal experience.

TL;DR: DK or PRG UCAs. :thumbsup:

Wish my install wash that easy. I must have wacked that ball joint for 15 minutes till it came off. I got the poly DKs, for which you do have to grind those little tabs down.

 

[TheHops]

Wish my install wash that easy. I must have wacked that ball joint for 15 minutes till it came off. I got the poly DKs, for which you do have to grind those little tabs down.

Well, my "tap" was more of a swing of Thor's hammer. I may have started off a bit aggressive...it popped right out though!

And yes, correction to my former post, you *will* have to grind down the pockets in the upper mounts, I was referring to the coil bucket lips when I said no grinding. Sorry for the confusion.

If you do get the bushing UCAs though, also grind down those little "daggers" in the back of the pocket. Those things will slice those bushings right up. All in all I spent maybe 10 minutes with a dremel for both sides.

 

[SouthernLion]

Will the dirt king heimed upper control arms work? On DK's web site, it says a recommended tire size of 31-33" tire, which I should be ok on, and a maximum heel backspacing of 4.75". My Fuel Octane 20x9 with +1 offset are a 5 backspacing though.

 

[[email protected]]

Yes our Titan heim and bushing style UCAs will both work with a 5" back spaced wheel.

Nissan Titan heimed Upper Control arms

Bushing Upper Control Arms

 

[LaxDfns15]

If you do get the bushing UCAs though, also grind down those little "daggers" in the back of the pocket. Those things will slice those bushings right up. All in all I spent maybe 10 minutes with a dremel for both sides.

Do this for both front and rear mounting brackets if you get the bushing UCA's. My brackets sliced mine at all 4 points.

 

[avmaldo]

Hmm I don't remember any daggers... just the tabs. Any pics?

 

[TheHops]

I couldn't find any pictures of it from my install, but basically if you look in the pockets where you grind the tabs, at the base of the "U" shape there were two very sharp edges just on either side of the bottom most point of the "U." All 4 of my brackets had two of these, so 8 "daggers" in all to grind down. They're not very large, but they're certainly noticeable if you reach back there to feel the pocket. Ask me how I know...

 

[LaxDfns15]

If you're looking straight on at the brackets they'll be where the red circles are. You can feel them, they'll feel sharp. Grind those down along with the tabs.

 

[avmaldo]

Hmm. Might be a wups on my part then. I had no idea those were there. I'll have to take a look at mine to make sure my bushings aren't getting shredded.

 

[avmaldo]

If I do have a problem, I'm wondering if I might be able to replace the poly bushings with delrin...

 

[SouthernLion]

Well I thought the problem was solved with a little bit of grinding, but I'm still getting CBC.

So I just ordered the heimed UCA's from Dirt King.

Is the grinding mentioned above with the bushing UCA's still needed with the heimed UCA's? I wouldn't think so, but figured I should ask to be safe.

 

[NBhunter80]

With my RC UCAs, I still had to do a fair bit of grinding on the coil bucket lip. No big deal, and it is really easy to do when the ball joint is disconnected from the spindle.

 

[avmaldo]

There should be no lip grinding with the DKs. There are tabs inside the brackets that attach to the UCA. It won't go in without them ground off. Not sure about the daggers for heimed joints.