SPL RUCA adjustment question

ONLY for ADVANCED technical discussion about the 240sx!
jace_xiong
Posts: 21
Joined: Fri Feb 19, 2010 9:56 am
Car: 1995 Silvia 240sx S14

Post

I searched and also googled and couldnt find the exact answer i needed. :[

Okay i recently installed some SPL rucas. I adjusted them to the "maximum" limit (shown below) and still have neg camber. is this really the "maximum" or can i go more because I can see a lot more threads left (room for adjustment). I want to try increasing it some more, but i don't want to risk anything.. I haven't taken it to an alignment shop yet, but i can see that it is at (or really close to) the so called "maximum" limit and don't want some alignment tech who doesn't know about this "maximum" limit to just to do it anyways and risk my car..

Image

hope im not too confusing and THANKS for any input :]


compactfean
Posts: 2602
Joined: Thu Dec 03, 2009 10:28 am
Car: 89 240sx s13 sr gt3071r 23psi
B14 sentra ser sr20de-t 7psi
daily
Location: reno nv

Post

I would try to utilize the stock bolts to get as much camber as possible. As far as the ” max” amount, id say 1/2 of thread should be safe. Most alignment places don't care if you watch and the place I go to I can actually tell them how I want it set and check there screen to see were its at before they wrap it up ( I used to be am alignment tech)

jace_xiong
Posts: 21
Joined: Fri Feb 19, 2010 9:56 am
Car: 1995 Silvia 240sx S14

Post

so if i were to keep "about" the same amount of thread on both sides of the adjuster (as stated in a few of the ruca installs), i should be fine if i go a little over SPL's "max limit". how would I utilize the stock bolts? I can only find info the replacing them with other kinds of camber bolts, not on how to use the ones i already have.

for an update, im going to be pulling them out to remeasure and double checking my install to make sure if it didnt changed from the length i set it at. also i never mention this, but i havent gotten adj. camber arms yet (short on cash, should be able to order some in two weeks). I know i will need the toe arms, but as of right now only he huge neg camber is noticeable (irratating to the eyes since im still on the stock SE wheels).

thanks again, jace.

compactfean
Posts: 2602
Joined: Thu Dec 03, 2009 10:28 am
Car: 89 240sx s13 sr gt3071r 23psi
B14 sentra ser sr20de-t 7psi
daily
Location: reno nv

Post

What do your mean you haven't bought camber arms yet? There what rucas are. As far as the bolts, the stock bolts are eccentric so when you turn the bolt head the lobe on the bolt will push the tire out or in. my car has a 1.75” drop in the back and with stock stuff I was able to get -2° (from -4). The rucas did the rest.

jace_xiong
Posts: 21
Joined: Fri Feb 19, 2010 9:56 am
Car: 1995 Silvia 240sx S14

Post

sorry i meant adj. toe arms. i will check on the bolt because i wasnt really paying attention to the design of the bolt when installing. I thought it was just a straight bolt. maybe that's what throwing my camber out of place. thanks compact :]

compactfean
Posts: 2602
Joined: Thu Dec 03, 2009 10:28 am
Car: 89 240sx s13 sr gt3071r 23psi
B14 sentra ser sr20de-t 7psi
daily
Location: reno nv

Post

My toe I was able to keep within spec with stock toe arms. How much is your car lowered?

jace_xiong
Posts: 21
Joined: Fri Feb 19, 2010 9:56 am
Car: 1995 Silvia 240sx S14

Post

not sure, im bought some agx & sitting on aftermarket springs that i got for free from my cousin. planning to get prokits when i get extra cash. so i checkd and saw that i set the eccentric on opposite ends haha. I adjusted them to be the same on both ends, but im just not sure how to adjust them properly. should the marks be pointing up or down and does pointing towards the car (towards center) create camber or away (towards the outside) from it? I set it pointing up and a little outwards (of the car) still doenst seem to be 0* out, but least its not as bad as before.
I checked the FSM but they only gave an example for the toe, does it apply in the same manner (the way the mark is pointing and how it adjust)?

compactfean
Posts: 2602
Joined: Thu Dec 03, 2009 10:28 am
Car: 89 240sx s13 sr gt3071r 23psi
B14 sentra ser sr20de-t 7psi
daily
Location: reno nv

Post

U don't know how else to explain it other than turn the bolt and watch the arm. With every full turn you will see the arm go in then out, in then out, with every rotation. So with that being said, when the bolt starts to push the arm out, see where it will push the arm the furthest away from the car and them lock it down. You will still change to get an alignment because when you adjust camber it will change the toe. Also, you will want the camber to be even on both sides and there is only so much you can do with out a machine. I would just watch the alignment guy and show him how your rucas work and have him use the stock camber bolts first. Also tell him about your concern with the amount of threads left and let him do his thing. To be an alignment tech you have to know a great deal about suspension so I'm sure he won't do anything to put your safety at risk. Remember, they do that stuff for a living and many technicians can appreciate the fact that you are lowering the car correctly.

jace_xiong
Posts: 21
Joined: Fri Feb 19, 2010 9:56 am
Car: 1995 Silvia 240sx S14

Post

alright, ill do that. Thanks again Compact.


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