street car would not need a super stiff setup. 30-35% stiffer than stock is plenty, and can run stock endlinks.

Eibachs are huge.I just did eibachs front and rear with spl/ whiteline links lowered on teins. Shop had the front stiffest and rear in the middle and took the front to soft because it wanted to oversteer a lot. The car feels beyond awesome, predictable all the time and I really dont think ill go stiffer front unless its for a specific track. For street use id still say get them youll love them.

Hi Rusty,
Are the end links upgrade mandatory, must?
I mean can I run the car with stock ones? and for how long?
What about Nismo end links? are they better than the sport model ones?

Thanks,
NASM

The adjustable end links are not mandatory. But for corner balancing, they are. Plus if you know what you are doing. You can preload the chassis.

The Nismo end links are just rebadged SPL's with a price increase.

I got it, you meant to achieve almost zero preload.
Is there any DIY or a video explain the same on 370z, using SPL endlinks installation?

Sent from my SM-G980F using Tapatalk

If you get them. I'll walk you through it.

Will order the them together with swaybars and update you soon.
Many thanks and regards,
NASM

Does or has anyone on the forum use a Progress front anti sway bar. How does it compare with Hotchkis for spirited street use and perhaps an occasional auto X? I have OEM Nismo struts and springs on my 2010 roadster.

Progress bar is tubular 35mm, Hotckis bar is tubular 35mm. Chances are they feel completely different from each other.

Hi Rusty, I have got the front sway and endlinks as well. I will be grateful if you take me thought and explain how to reach zero preload. and if there is any video also that will be useful too.

Appreciate your help.

regards,
NASM

It's best to have a drive on lift. Makes it' easier to get to the links. If not, a set of ramps will do. Drive up the ramps. The tires CAN NOT be hanging. The cars weight HAS to be on them.

To start. Don't have any links installed in the bars. The other is installed. Drive the car a little to get the suspension to settle in. Drive on the lift or drive up the ramps. Start with the front. Set your first link about half way in it's adjustment range. Install it into the bar. Tighten down. Go to the other side. Adjust that link so that the bolt will slide into the bar easy. It will take a few tries to get it. Once that is done. Now you can install the nut and tighten. Now go to the rear and repeat.


Adjustments made after you do this will effect handling. You can preload the bars to change the handling. If you change the setting on one link. It will have an effect on the opposite corner of the car. For corner balancing. Besides adjusting the spring preload, and spring height. You can fine tune using the end links.

Very clear, however, FYI I just got the front swaybar, so I will just work on front one. for the rear I will leave the stock bar, hence, do I need to buy endlinks for the stock rear swaybar? and follow the procedure above?

Kindly advise.

regards,
NASM

If you don't have the rear end links. Leve the rear connected and just do the front as I described.

Update:
I had the sway bar installed which is Hotchkis (front only) and the impact/feeling was immediately, I felt the car became more firm, responsive, with better control when turning. Amazing!! Luckily I had track day after couple of days of the installation, the experience on track was totally improved and way way better than before.

I didnt install the endlinks yet, because the stock ones were still very good. I highly recommend to get swaybar from Hotchkis. In fact, it should be the first upgrade on suspension, even before the coil overs.

Z1 just released their own sway bars and links! 35mm front, 28.5mm rear

That's equal to a Hotchkiss setup but $12 cheaper. Who's trying them first?

https://www.z1motorsports.com/z1-pro...7b5989cfe7222f