Originally Posted by
Doctor
Can you please explain which part had to be machined down to make this work? I'd like to do the n15 lca conversion on my n14 too. Also, did you use any specific model n15 or are they identical between the years and engine variations?
Thanks
Doctor G: Sorry, I forgot to answer.
The N15 lower arms are all the same. I used N15 ones with SR20. Further I replaced the stock bushings with a set of energy suspension ones.
The rear controll arm bushing is this one:
Whiteline KCA303 Control arm - lower inner rear bushing (caster correction)
The added caster helps on turn in and makes the car more responsive to drive. With this modification you have about 10 - 15mm more track in front. But thats just the 'first part' of the story.
The balljoint I used was this one:
Moonface SAB13R ( I will double check with the box it came in! )
We have choosen this one, as the tapper fits very well in the knuckle. The only issue is the housing diameter is 2mm too big in diameter. With a little lathe action it fits perfectly.
The car is 'low' but not slamed!
I hope this helps!
To give a 'final input'... When lowering the car with this modification, set the front to a height where the lower arms are parallel to the ground. If you corner balance the car then, the rear end will have a tad lower roll center which is a good sign. Car handles great! With this modification, do not forget, that the offset balljoint eats up wider track, the car has now about 5 - 8mm wider track. This comes from the longerball joints, but it is ok. Acceptable camber, caster values are still achievable.
Stay tuned - I am now working on the bump steer issue