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Rear suspension upgrades

Sleepergm
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Sleepergm Enthusiast

Sleepergm

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Hi all,

 

other than coil overs - anyone running rear sway bars and other suspension upgrades? 
 

what does everyone recommend to improve the car handling? How about control bar upgrades etc. photo from vspec performance. 

 

thanks 

IMG_1330.jpeg

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robbo_rb180 Grand Master

robbo_rb180

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New whiteline rubber bushes, maybe some adjustable arms (rubber ends like hard race for road car)no need for Sway bar if correct springs or going to be fine tune for the track.

A proper alignment with corner balancing and coilovers with spring rate for the right purpose and setting droop correctly.

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GTSBoy Grand Master

GTSBoy

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Coilovers aren't even the first step.

Bushes, subframe position and alignment, HICAS elimination, adjustable upper arms and traction arms in order to dial out understeer. All these things need/deserve attention first.

ARBs (There's no such thing as a swaybar. Please, everybody, stop calling them that) are useful if you want to limit spring stiffness. Otherwise you can control body roll with springs.

Spring and damper rates are a function of road surface, speed and usage. There is no solution that works for all cases.

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Duncan Grand Master

Duncan

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swaybar swaybar swaybar swaybar swaybar

anyway OP, what is currently in your car, are they factory shocks and sway bar? Any sign anything else has been changed under there over the years? And as Murray said....what are effect you looking to change

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Sleepergm Enthusiast

Sleepergm

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Great discussion guys. I just have coil overs in my car right now. Ride is pretty stiff and everything feels very precise and accurate when hitting the corners. I started off with a high level and kept specimen.

 

the only item I feel I might need to adjust is my camber with control arms or a kit as I might want to tuck in my rims more so there is no rubbing. Otherwise I have not thought too much into it as quite happy with the setup. I think the bushings are all good still. 
 

My motor is currently out now but I have got a nismo front strut bar to install. So that should help with body roll in front. 
 

added a photo of what I started with before the modding or let’s say modernization of parts started. 😂

c58f4ad4-6465-4f4b-8b5f-de1860d69257.jpeg

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Murray_Calavera Mentor

Murray_Calavera

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10 minutes ago, Sleepergm said:

I just have coil overs in my car right now.

It looks like you've got Ikeya control arms and an aftermarket sway bar, maybe whiteline? 

Or am I just going crazy? lol

14 minutes ago, Sleepergm said:

I have got a nismo front strut bar to install. So that should help with body roll in front. 

Unfortunately it won't, but what it will do is look really pretty. That's about all unfortunately. 

15 minutes ago, Sleepergm said:

the only item I feel I might need to adjust is my camber with control arms or a kit as I might want to tuck in my rims more so there is no rubbing.

How much neg camber do you currently have?

Generally lowing the car dials in quite a bit of neg camber as it is. If you do go down this path, your best bet is get adjustable arms, toe arms (or preferably a good HICAS elimination kit) and traction rods. With all 3 being adjustable, you'll be able to dial out any bump steer that is introduced by playing with the camber settings. 

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Sleepergm Enthusiast

Sleepergm

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12 minutes ago, Murray_Calavera said:

It looks like you've got Ikeya control arms and an aftermarket sway bar, maybe whiteline? 

Or am I just going crazy? lol

Unfortunately it won't, but what it will do is look really pretty. That's about all unfortunately. 

How much neg camber do you currently have?

Generally lowing the car dials in quite a bit of neg camber as it is. If you do go down this path, your best bet is get adjustable arms, toe arms (or preferably a good HICAS elimination kit) and traction rods. With all 3 being adjustable, you'll be able to dial out any bump steer that is introduced by playing with the camber settings. 

Thanks for the info. Didn’t know I had aftermarket control arms already? Will talk to my garage. What brand would u recommend if I want to play around with my camber more? I would think my camber is around stock level right now or more negative now due to lowering with coilovers. I will be lower her again 1.5 cm to get some more. 

 

also why does everyone like to remove the hicas system? Is it because most don’t work properly anymore or ppl just don’t like them. Mine is functioning as it should be right now. 
 

thanks for the good info 

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Murray_Calavera Mentor

Murray_Calavera

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3 minutes ago, Sleepergm said:

Didn’t know I had aftermarket control arms already?

In the first photo you posted, the colour of the control arms are the signature colour for Ikeya. Same for the swaybar, signature colour for Whiteline. 

5 minutes ago, Sleepergm said:

What brand would u recommend if I want to play around with my camber more?

I like Hardrace, they also do hardened rubber bushes if your car is mainly a street car. 

I like GKTech as well, but they use a lot of rose joints in their stuff so might not be the best choice for everyone. 

8 minutes ago, Sleepergm said:

also why does everyone like to remove the hicas system? Is it because most don’t work properly anymore or ppl just don’t like them. Mine is functioning as it should be right now. 

The system might have been good back in its day, but it's a prehistoric system now. I suspect that most people have removed the HICAS as they want the car to do what they want to do, not what the car wants to do. From what I also understand, it isn't consistent in it's behaviour on track so it's hard to trust the car/know where its absolute limits are for track use. 

Having said that, I think the HICAS eliminator kit was the first thing I installed when I bought my car. I don't personally have any experience with the HICAS system on a race track.  

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Duncan Grand Master

Duncan

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I think the pic in the first post is another car, and post 7 is OP's car with standard arms and swaybar swaybar swaybar.

I can't tell what brand the silver coilovers are, and even if I could I don't know whether the spring rate is OK, if you can find a brand on the shocks and numbers on the springs that might help. Also, if you can measure the ride height from centre of your wheel to the guard that will help with advice too as handling suffers if ride height is too low

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Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

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9 hours ago, Sleepergm said:

why does everyone like to remove the hicas system?

Because it's rubbish, it got progressively better with each generation but still rubbish when you're pushing the car on the track.

Some like it, most hate it.

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morboost Community Regular

morboost

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If im following along correctly. You purchased a low k'm stock bnr32, fitted some wheels I will assume they are a square set of wheels and tyres eg same width and offset and tyre size front and rear, if they are square then you haven't change your handling from factory but have more grip. You fitted some coilovers and wound them lower now have more negative camber and a firmer ride with less body roll.

Now if you want sway bars this will bring in the oversteer understeer choice. A larger stiffer rear swaybar by it's self will cause more oversteer, how much effect this will have will depend on your coilover spring rates, If you feel like your car understeers right now and you don't like it a aftermarket rear swaybar might be what you need.

I would recommend fitting front and rear swaybars with adjustable ends to keep a more balanced setup and can be fine tuned by moving the end links in different holes.

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GTSBoy Grand Master

GTSBoy

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You are wrong. That's just Whiteline going along with the incorrect slanguage of the sheeple userbase.

They are only correctly known as anti-roll bars.

They are only incorrectly known as swaybars.

They do do anything to prevent "sway".

The swaybars that are fitted to trailler hitches do prevent sway. In the trailer. And they do not look like anti-roll bars.

So, take your incorrect infopinion away.

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