Simple UCA debate

Not everyone wants a bright red uca though.

 

Correct. That other member doesn't know what he is talking about.

You might want to do more research on SPC UCAs before attempting to correct a member with incorrect information. SPC UCAs allow both Caster AND Camber adjustment. Caster is adjusted via the star plate and ball joint positioning. Camber is adjusted via the machined slot. BOTH camber and caster are adjustable with SPC UCAs. The more you know.

Instructions

 

https://m.youtube.com/watch?v=huMztKaHsUE&t=6s

https://m.youtube.com/watch?v=InQnp42pfts&t=4s

 

SPC is mediocre

 

Can you elaborate on this a little more as to why?

 

i did do the research...i have taco tabs, rear towards the wheel, the front towards the engine for max caster. thats set there...i can still add caster degree on top of the spc...the camber gets adjusted by sliding the spc from right to left. Toe will still be the same with tie rod. ive already replaced a balljoint for free with warranty without having to do an alignment cause i used a paint marker to mark the position of the camber its in.

 

I think heim pivot frame side with a ball joint is the best setup for adjustability and durability.

I got SPCs for my 2nd gen for the adjustability, but both the ball joints and pivot bushings are junk. I'm on the 2nd set of ball joints in under 20k miles and the 'new' x-axis bushings have noticeable play. Super disappointed.

 

Get the rock auto SPC arms, same SPC arms in a rebranded box for around $400

 

I’ve found on many cases the ball joints don’t last more than 12 months even with normal driving. The x joints have had issues with popping and movement out of the box. Personally feel that the adjustability is more of a gimmick and most cases there is only one good spot that you can put it in.

 

Didn't know they had that part. Never noticed it on the instructions before. Still not that useful if the rest of your alignment is properly set. Should not need to be touched. And still an additional failure point that is unnecessary. The rest of my argument still holds up though, and the components on the SPC arms are garbage vs most other UCA options. I really don't understand the hype about them.

 

Doubling down when you are wrong eh? Tells me all I need to know about any advice you have given or will give in the future.

 

Completely disagree.

This feature allows you to max caster out on the LCAs, giving you the most tire clearance at the firewall, and still be able to get camber in spec.

 

I have no trouble keeping my camber and toe in spec with my JBA's set to 4 degrees of caster.. and still have adjustment on the eccentrics to push any of it further if needed. Not saying adjustment is a bad thing, just that it's not needed with other arms that already have the correct geometry built in.

 

SPCs. Moab, Rubicon, and lots of Big Bear wheeling trips. 18K miles on them. No play, no loss of position. Highly adjustable to get just what I wanted. Dont think I would like others after this experience.

 

the biggest debate ive had with spc is the setting people are putting it on. i keep on seeing it put on "e, f, or even g" for max caster. Those put it in negative caster with bringing the top forward and pushing the bottom towards the back. If the flat part with the spc logo facing the tire, "a, b, c" brings it to positive caster, bring the balljoint to the back and the lower pushing the wheel towards the front.

 

LOL at thread title.

 

only the best

 

This is why ppl get confused on this site. This too is also inaccurate. Bushings are very good. They are flex joints which a essentially a uni ball with a rubber housing around it. No maintenance, very strong and works great with no noise. The ball joints are also greaseable as i greased mine after every wheeling trip or every oil change. I never had one failure in the 50k miles i put on them and i abused my truck regularly. I would still have them if it weren't for going LT. Might want to make sure your info is correct before posting out there. Just confuses ppl. I see ppl above have also corrected on a couple of wrong statements as well. The adjustments ar faily easy and took me less than 10 min to dial in my alignment with my 35's. Key to the SPC arms is proper maintenance like anything if you don't they will fail.

 

The bushings aren't greaseable like other options. I suppose I could have worded that better, updated it in the original post.

All I'm trying to reiterate here is that there are better UCA's available that are worth checking out. You SPC guys sure seem to love these though, still not sure why. Never been impressed with SPC stuff when I've run it in the past. Super overhyped and it all just feels lazily designed and doesn't last in my experience.

 

I gues

I guess maybe there are other SPC versions out there but mine certainly are greasable (with a zerk!). I have lubed mine at each oil change and they feel the same as new. I would only want something different if I were planning on high speed desert running with big hits. If I were doing that, I would have a completely different suspension/arms anyway.

It might be worth mentioning that I do my own alignment and that might be part of why I appreciate the SPCs as they allow me so much more flexibility to get what I want. And they are serviceable, and greasable, and and and...