NSX Roll Center Adjuster (RCA)?

[stuntman]

^Very cool John!

I've already done similar work, but its awesome that you actually took pictures!

I definately think that RCA would be beneficial. Regardless, I personally have the need for them and one way or another will have them done.

 

[titaniumdave]

Billy,Do you think a bump steer kit for the rear toe links will be needed once you lower the ball joint?

I spent some time looking at the Realtime NSX they had on display at Monterey. They were running all stock suspension pivot points, just as a point of reference. Wonder how much faster they could have been?

 

[stuntman]

Billy, Do you think a bump steer kit for the rear toe links will be needed once you lower the ball joint?

Required - no
Helpful - maybe... probably
Harmful - no more than lowering the car that far w/o RCAs (as Realtime did)
Would I put them on my project - Yes.

I spent some time looking at the Realtime NSX they had on display at Monterey. They were running all stock suspension pivot points, just as a point of reference. Wonder how much faster they could have been?

Been there, took photos of this, measured that (last year) :biggrin:

Not sure why they didn't either, maybe the rules didn't allow it at the time...

 

[titaniumdave]

Required - no
Helpful - maybe... probably
Harmful - no more than lowering the car that far w/o RCAs (as Realtime did)
Would I put them on my project - Yes.

Been there, took photos of this, measured that (last year) :biggrin:

Not sure why they didn't either, maybe the rules didn't allow it at the time...

They did have different toe link ball joints on the knuckle end, I just remembered...at the time it did not think to take a closer look. No other reason to replace them except to adjust the bump steer.

 

[stuntman]

Any update researching the ID of the S2000 or NSX rear lower control arm balljoint?

 

[titaniumdave]

Any update researching the ID of the S2000 or NSX rear lower control arm balljoint?

NSX lower rear ball joint:
42 mm diameter

16 mm depth into knuckle, above the C- clip which is on the bottom side.

 

[stuntman]

NSX lower rear ball joint:
42 mm diameter

16 mm depth into knuckle, above the C- clip which is on the bottom side.

Now does anyone know the ID of the S2000 balljoints to see if they fit?

Dave- So when can we start making them? :biggrin:

 

[titaniumdave]

Billy,
I found a set of RCA front ball joints for 02-04 RSX that might work with only 2 small mods. I am waiting for a drawing to make sure the dimensions will fit, and the stud will clear the inside of an 18" wheel.

Looks like a set will be around $450 this route. They have a threaded nut which holds the ball joint in, so it will make for easier replacement down the road!