Suspension set-up and alignment specs

[Boyscout]

i am currently installing a new suspension and need to know what other owners are using for alignment specs. the car is a R32 GTST and is going to be used for street driving and auto-X. does anyone know of a reputable shop in the Edmonton area that can do a quality alignment (without taking my car for a joy-ride...)

Front:
Apexi coilovers (lowered ~ 1.5")
FUCAs (adjustable)
Lower control arms (adjustable)
front tension rod (adjustable)
castor arms (adjustable)
upper strut brace

Rear:
Apexi coilovers (lowered ~ 1.5")
RUCAs (adjustable)
lower control arms (adjustable)
upper traction rods (adjustable)
HICAS lockout with adjustable tie-rods
upper strut brace

thanks for your help

[CanadianGTR]

Once you find a good baseline, I suggest buying a contact tire pyrometer and taking measurements on the track after each session. You will find that what tire you run + how you drive will affect the baseline numbers, so it's hard to really tell what a surefire bang-on setup will be unless the person has the exact same suspension, tire, race weight, driving style.

I suggest getting it corner balanced as well.

[Boyscout]

so i need someone to give me a good baseline.

[Transparent Skyline]

-2.5 camber
1/32 toe in
5 degress of caster

-2.0 camber
1/64 toe in

I am running 245/45/16 hankook RS2 i am about the same right as you an have compatible parts list so this should be alright. This Set up has worked well for me in the past at auto X and track days tyres dont seem to chunk and heat even....But with this little amount of toe in its kind of a bitch on the road..

[frankiman]

you can check out the GTR chassis setup database
http://forums.gtrcanada.com/gt-r-tec...ase-49559.html


and for the alignment, i just brought my car to the local Nissan dealer, the alignment guy also owns a skyline,
told him what specs i wanted, and he put it all on the dot

[fastbmw7]

For the rear toe setting, I like a little toe out... it makes for a nice crisp turn in. Try 1\32 toe out. Remember, what is optimal for the street will likely not be optimal for the auto cross track and vice-versa.

[Bugsly17]

Use oem specs.


and nothing else.

[Skym]

Factory alignment specs are good for factory suspension setup. But gives a good base to work from. Alignment specs depends on your setup (spring rates, shock valving, swaybars, ride height, tyre pressures, etc). Also application like street, racetrack, dragstrip, etc. Like for example on racetrack you tend to run more camber on rear for cornering, but on dragstrip you do the opposite when looking for maximum traction when rear squats.

Also I would get a tool to measure heat across tyre, as it tells you what's going on with the tyres and can make adjustments to alignment, tyre pressures to suit.

[plankworx]

I ran this for a couple of grip sessions, worked quite well;

front:
-2.2deg camber
1/32 toe-out
~8deg castor
with your adj. lca's, widen each side by 1/8-1/4"

rear:
-2.5deg camber
0 toe
stock track-width

[Boyscout]

ok, so if it is mainly street (summer only) and occasional track?

front camber: -2.5°
front caster: 7.0°
front toe: 0°

rear camber: -2.0°
rear toe: 0.5° in