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Newer Lower control arms onto CBA

- - - - - lower control arms lca cba

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6 replies to this topic

#1
7racer

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During my build, I swapped out the stock lower control arms for the newer 2014 lower control arms.  On the parts list, it was the only part number they had...so the most current but probably not the "Nismo".

 

The talk was how the upgraded suspension geometry of the newer cars helped the GTR on initial turn in and feel more stable on turns at the track.

 

Also if you look at the CBA LCA vs the newer LCA, it moves the mounting point of the shock farther to the wheels side.

One of the Jotech guys is a pro level RC racer that sets up an builds his own cars.  He seemed to have a VAST understanding of suspension geometry and set up.

 

He referred me to a book that you can download that talks about the suspension and changes in an easy way (attached).

 

Anyways, I plan to report back in this thread after Icarus and I drive COTA, but last time at MSR the car felt AWESOME on turn in and on long sweepers.  It just felt super stable and neutral.  It was amazing!  I was really worried I messed up the set up of the car with all the changes and the wing but it's been perfect so far!

 

I did change other aspects of the suspension with the aftermarket control arms, UCA, etc. plus wing and running more camber so that might muddy this impression.

 

In regards to the camber, it looked like I wasn't using the outside of the tires so plan to go back to my TSM alignment for COTA and will report back.

 

 

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In7anity!!


#2
shawnhayes

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I suspected it would work very well. Nissan changed very little, but what they did change seems very very positive.

Shawn

#3
paparazzi

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you left in the CBA uppers?


JDM Mine's dry carbon Spec X 6.0 with genuine Spec-V turbos 
617ft lb and 652whp on MS109E


#4
god7illa

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Great news, thanks!  I've been considering doing this for some time now.    The LCAs are a reasonably priced upgrade imo.

 

I already have 2013 struts/springs in my '09, so this probably makes sense to do.

 

My only concern is a possible mis-match with what (if anything) has changed in the rear.


2009 Gun Metallic
Power:     2012 Turbo Inlets (ported by Dave@GotBoost),  Cobb catted Y-pipe,  GotBoost's 3" Intake,   Magnus tune: ~525 whp, ~550 wtq

Handling: Stillen front/rear sways,   '14 Track Ed struts/springs,  DBA LCAs,  ARP lugs,   Alcon/Carbotech brakes
Aero:        Stillen Front Splitter and Side Skirts,   Difflow 5 element rear diffuser
Convenience: 2014 MFD/NAV/Audio (legertas upgrade) w. front and rear cameras

                       Mr. Ess Hertz front/centre speaker/amp upgrade,   JL Audio SX600/1 + 2x8" Subs (my own "kit")
                       CarKitCompany RRR Memory Box


#5
7racer

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you left in the CBA uppers?

 

no I have the SPL upper control arms


In7anity!!


#6
shawnhayes

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Great news, thanks! I've been considering doing this for some time now. The LCAs are a reasonably priced upgrade imo.

I already have 2013 struts/springs in my '09, so this probably makes sense to do.

My only concern is a possible mis-match with what (if anything) has changed in the rear.


You should be able to tune that with sways. The geometry changed, but markedly little. One inch movement on the LCA changed the angles in such a small way. Not zero, but just a little.

Shawn

#7
Johnnypbmx

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Reviving old thread- but i have spec-v bilsteins and the kw sleeve kit on my cba- way too stiff so im going back to swift sport springs

While im at it should i try to source some updated front lower control arms? Ive seen mention of the fron benefits but was the rear changed to? Running spl upper arms too.
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