Supporting mods with coilovers

GooglyMoogly

Hey guys looking to buy some coil over soon but reading through the forums I learned that there are bunch of other things I need to get to fix the alignment after lowering the car. So far, if I read correctly, these are the things I need:

1. Front Upper Camber/Caster Arms
2. Rear Camber Arms
3. Rear Traction Arms

Are these mods the correct ones and what other ones do I need? Also z1 has a package, but I heard SPL stuff is higher quality. Is the difference a lot? SPL seems 2-3 times the price

Thanks

Rusty

SPL parts flat out works. The best quality. The easiest to adjust. They hold their adjustment. The most recommended parts on this forum. Buy once and forget it.

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"The Difficult Anytime, The Impossible By Appointment Only"
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OptionZero

SPL has more adjustment range and much better track record of reliability, plus easy on-car adjustment. Its not even a question - SPL is the best option. Dont cheap out

You also need either the toe arm for true type coilover or midlinks for OEM type

Z1 has documented- self admitted manufacturing issues for at least one run

Don't believe me? Read yourself Z1 front adjustable camber arms

Oh, and the Z1's aren't adjustable on car. Gotta take 'em off. Oops

we always recommend SPL because they are the best

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GooglyMoogly

Awesome, makes sense. One last question, what’s true style and oem style? Bc and kws are like oem right ?

OptionZero

true style = spring wrapped around damper



with this style you need SPL toe arms

https://www.splparts.com/products/re...-370z-g37.html

OEM or "divorced" style = spring separate from damper, in a bucket on one of the arms



With this style you need the SPL Mid-link
https://www.splparts.com/products/re...-370z-g37.html

BE AWARE - these two different setups require different spring rates in the rear. As they have different geometry, you need roughly half the stiffness in the true type as in the OEM type. IE, a 10kg spring in rear for the OEM type is about the same as a 5 kg rear spring in true type. There is math involved, don't ask me.


EDIT:
When you get the rear suspension arms you also need to get the Eccentric Lockout kit:
https://www.splparts.com/products/ec...-370z-g37.html

These are important because once you have all these adjustable arms, you want to use THEM for adjusting alignment. The factory setup in the rear uses two eccentric bolts on each side; these will slip and **** up your alignment. You no longer need the adjustment point so locking them in place eliminates that weak point

Optional, you don't NEED to replace these:
https://www.splparts.com/products/bu...-370z-g37.html

These are simply convenient to install when the car is up and you're doing an alignment.

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15 370Z

A word of advice - do not cheap out on alignment components!!! Do it once- do it RIGHT. SPL all the way. The other **** is 2-3x cheaper for a reason. I got true rear coils and am very pleased with the ride and adjustability.

GooglyMoogly

Okay SPL stuff it is. z1 seems to be selling it cheaper than SPL website, is Okay to buy it from them? Also guys OEM style coil overs are mostly all the brand names people usually buy right ? Like bc racing, kws and rs-rs? Still a bit confused since none of the coil overs ever mention oem or true style besides couple I saw on z1 that said true style.

ABUNAI NISMO

Yes. You can buy SPL parts from Z1. I bought almost the SPL whole catalogue from Concept Z performance. I believe they also have free shipping on these parts right now too! Check it out


BONUS TIP Use the online code ONETIME at checkout to save 10% on your order. Buy everything at once as the online code is good for only ONE use. Best wishes!

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MOTORDYNE LTH w/HELMHOLTZ RESONATORS+SHOCKWAVE CBE + M370 INTAKE PLENUM | | STILLEN LTI | ID 1050X | CJM S1.SE FRS | E85 | 345/286

OptionZero

Watch the for sale section, spl stuff pops up

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OptionZero

Assume OEM style unless specified otherwise. Some places offer both

Shop around and get the stuff whoever is cheapest for you. It all ships from SPL anyways

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OptionZero

Since wheels are the next step, read this first
Wheel Fitment 101: START HERE

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GooglyMoogly

Thank you guys for all the info. For wheels I ended up going with konig Dekagrams and dropped down to 18inch rims. I didn’t read that thread before buying them but I hope everything fits.

18x9.5 +25 255/45/18 pilot sport a/s 3+ (too much rain in Vancouver)
18x10.5 +18 285/40/18 same on the back

I just hope I don’t need spacers. Front wheels supposedly aren’t concave so hopefully enough brake clearance and backs are the concave profile.

OptionZero

They’ll fit. They will look ok at best. Those aren’t a very attractive design

You can much more aggressive since you’ll have full adjustment
The thread will have examples

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OptionZero

You can easily fit these (not mine):
SSR Professor SP1 - in custom Satin Black

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GooglyMoogly

Honestly the weight of the rims and price was too hard to pass on. Just gotta start saving money for some good coil overs. Any recommendations? I was thinking kw1 or rs-r.