Hey guys, Mark Rivera from Paco Motorsports. Sorry, I'm having trouble logging into the Paco account.
Here's a few tips to help anticipate/prevent/fix common issues when installing the 3" lift kit. Keep in mind, there are several reasons why people lift Miatas, from well prepped Rallycross machine to unregistered farm toy to street Hoon-machine, so some issues and components may be more critical than others for some builds.
- To get back some negative camber in the front with the lift installed, some people are installing extended lower ball joints with success. Beware, the more negative camber you achieve in front combined with higher ride height brings you closer to the pivot limits of the ball joints and you COULD see binding depending on alignment, ride height, steering angle, and other factors. I tend to run as little positive camber as possible with standard eccentric adjustments, and just live with the minor positive camber traction issues, which is usually not much of a problem with snow/mud tires anyway.
-In the rear, adjustable upper control arms also available from PacoMoto are great for dialing in exact rear camber desired, and also fixes any tire rubbing which can happen with some wheel width/wheel offset/tire width/spring diameter/alignment settings/curb weight combinations. Wheel spacers can also help in solving tire-to-spring rubbing issues.
-If possible, limit ride height in the rear. Especially those of you running very lightweight cars and minimalist karts. Accelerated CV wear can occur and you may start going through axles, especially during hard driving/offroad/high speed conditions. Chinese axles are pretty cheap replacements, but perhaps not quite as strong or resilient as Mazda axles, from what I've seen.
-Listen for clicking not only while driving, but spin the rear wheels by hand with the car in the air at full droop to listen for quieter clicks you may not hear while driving. Even if they only click at full droop and not during most driving, it can happen in corners with body roll, especially if you decide not to run swaybars on your car. Clicking is binding damage happening inside the CV from it operating past it's maximum angle. Don't go there if you can help it.
-If possible with your shock setup, and especially important in the rear, spring rates on the lower end of things (stock rates or similar) will allow for less ride height and having at least SOME droop travel, which is important at both axles for traction and handling on uneven surfaces, again, especially if not running swaybars. If it's ideal for your application, less expensive factory replacement style shocks and factory springs are a better option than adjustable height coilovers with high spring rates designed for lowering and street/track use. I wouldn't use anything above about 250lb/in or so in front, and a bit softer in the rear.
I'll add these tips to the instructions and continue watching this thread if you guys have any other questions.
-Mark