ZDan

Plenty do, including Gran Turismo in Atlanta who do great work and have aligned my RX-7 a couple of times. BIG difference between 0.20 inches and 0.20 degrees, totally worth clarifying. Units should always be stated! No reason not to.

King Tut

Need to get keyboard manufacturers to add a degree symbol to the keyboard I guess. If I don't see " or in I assume degrees as most shop alignment machines use degrees. Now a race shop using strings or toe plates is a different thing.

ZDan

To make things worse, " means inches, but it also means an arc-second of angle so technically that's still ambiguous! I don't think many people use arc-seconds for vehicle alignments, BUT the infamous and extremely wrong (by about a factor of 4x) UK spec for AP1 alignment uses the " symbol but apparently they meant ', arc-minutes and not arc-seconds *or* inches! Damn...

Also, today I learned that Alt 248 gives degree symbol on PC: °

hecash

My old AP1 track alignment that I just loved.

Front
Camber - 1.5° /-1.5°
Caster +6.8° /-6.8°
Toe -0.03 in /-0.04 in
---Total Toe -0.07 inToe
-.08° / .08° ---total 0.16°

Rear
Camber-2.5° /- 2.4°
Toe 0.09 in /0.10 in
---Total Toe 0.18 in
Toe +.20° / +.20° ---total +.40°

SkiLLeDS2000

Your go to shop... PTuning does! If you lived 15 mins away from it like I did you would know that. The more you know

InsaneSp

Zero toe F/R. True story.

s2000Junky

That's probably acceptable as long as it doesn't toe OUT at any point in its stroke. A deliberate ride height adjustment and bump steer kit with proper set up is a good idea. Its still going to toe IN though under compression even though static toe alignment is 0, but thats what you would want to air on. Its hard to eliminate any toe movement through its entire stroke because of the position of the toe bar connecting point to front of the hub, rather then being on a central axis, which it just isn't. dynamic toe is built into the car design. the toe correction kit does reduce this though with proper set up along with the reduction of total suspension stroke from most aftermarket coilovers.

In stock form and to a lessor degree with modification and depending on how set up, the rear toe actually goes through two dynamic movements starting at full droop to rest to full compression, Toeing IN at full droop, to going positive to going back to Toe in/negative at full compression.

ZDan

InsaneSp has an AP2, which doesn't have the toe-change-with-bump "feature" that the AP1 has.

I wouldn't be averse to running 0 static rear toe-in on my stock AP1, even though that means it will likely toe out some on extension. Stock AP1 setup toes in a bit more than 0.3° per inch of travel per side (!) between static and 3 inches compressed according to this thread: https://www.s2ki.com/forums/s2000-ra...ck-ap1-817939/
I'm starting with 0.1° static rear toe-in per side so I must be getting toe out under braking even if it's losing quite a bit less than 0.3° per inch on the extension side. Still behaves better and more linearly than running a ton of static rear toe...

s2000Junky

I need to crawl under an ap2 one of these days and inspect the rear suspension geometry. I assume the toe bar attachment points have been relocated to minimize this toe influence through the stroke. been a wile since ive looked at a stock ap1 to see where the toe bar is relative to ride height, but if memory serves its actually angled down and as suspension compresses through first half of its range, its toe out before it starts to toe back in again. This is corky shit. makes sense why so much static toe in was called for in oem spec. This is where if nothing else, just lowing the car 1.5-2" can make it a more predictable handler. The toe bar kit/adjustment is only secondary fine tune dressing after that.

With a trained eye you can see how your toe will be influenced through your stroke range by the angle of the toe bar relative to total parallel, with parallel obviously being the further point to toe out. So you can visually map this toe sweep out from behind/under the car in each point of your ride height scenario from off the ground/full droop, to rest/on the ground to jacking up one corner to compress. Having the toe bar at parallel at what ever resting/ride height the car is at, is generally the best to get minimal but best case scenario toe curve throughout full stroke. As the wheel droops or compresses the toe bar is effectively shorted by its angle, pulling the tire IN. In this set up, never will it toe out at any portion of its range even if set to 0 at its static resting point. This has been my visual assessment and logic based on the design of the ap1. I need to crawl back under an Ap2 and see what's going on there as mentioned.

dan_uk

-0.05 total front
0.10 total rear