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-   -   Improving safety and handling. (https://www.350z-tech.com/forums/173-nissan-350z/93815-improving-safety-handling.html)

Piotr Bizon 04-01-2019 03:39 PM

Improving safety and handling.
 
My Z just got repainted and I began to wonder about next steps, namely what would be best in terms of safety and handling to invest into in the near future? The steering is phenomenal but starts to feel kinda sluggish, while the ride is getting soft - guess the rebound and dampening is not what it used to be.

Apart from bigger/ better brakes (thinking about 370z akebono) what would you consider ? New swaybars, coilovers, braces or simply a service to the stock suspension and steering to begin with?


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dkmura 04-01-2019 10:04 PM

How many miles are on your Z? If it's high, you should consider replacing the shocks with some high-quality units from Koni or Bilstein. After that, swaybars would be a nice upgrade.

Piotr Bizon 04-02-2019 02:11 AM

Quote:

Originally Posted by dkmura (Post 1254213)
How many miles are on your Z? If it's high, you should consider replacing the shocks with some high-quality units from Koni or Bilstein. After that, swaybars would be a nice upgrade.



110k miles


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Piotr Bizon 04-02-2019 02:32 PM

Quote:

Originally Posted by dkmura (Post 1254213)
How many miles are on your Z? If it's high, you should consider replacing the shocks with some high-quality units from Koni or Bilstein. After that, swaybars would be a nice upgrade.



Also: any recommendations for street suspension? Don't mind car being more bumpy


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dkmura 04-04-2019 12:53 AM

Koni 8241 Sport shocks are what I use on my street Z. Combined with Eibach Prokit progressive springs they make a sweet combo.

MicVelo 04-04-2019 08:07 PM

Quote:

Originally Posted by Piotr Bizon (Post 1254217)
Also: any recommendations for street suspension? Don't mind car being more bumpy


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Quote:

Originally Posted by dkmura (Post 1254219)
Koni 8241 Sport shocks are what I use on my street Z. Combined with Eibach Prokit progressive springs they make a sweet combo.


I have the same static setup as dkmura and love the shock adjustability (to suit whichever tire/wheel combination I'm running at a given moment); however, I am a bigger fan of the ride improvement, quality and handling of the Bilstein B12 ProKit set up over stock. (Shocks are Bilstein, springs are Eibach and lowers the car ~ -19mm). It's also the cheapest way to get into a set of 'Steins. (I started with the B12 PK but gave away my Bilsteins to a starving student. :wink2: Uhhh, my son. Switched to the Konis following; ride stiffness is a bit more harsh.)


Sway bars are the best bang for the handling buck - if you don't need shocks (but with 110k and assuming original shocks, you needed them 50k ago. Laff.)


But the most overlooked thing when people start messing with the suspension. ALIGNMENT is the most important thing you can do for handling, even stock. Keep in mind though, there is no camber adjustment stock. If you lower the car, you MIGHT be able to get away without having to align but the right way to do it is to install adjustable FUCAs and rear camber arms. Then take it to a competent alignment person who knows how to work with aftermarket adjustables. Most shops haven't a clue and will do the usual toe and caster adjustment to factory spec (because that's what's programmed into the Hunter (or whatever rack they use) and that's where they stop. Problem is, adjustment of any one of the three angles affects the other two. Do camber first, toe next, then caster. Then go back and check the other two again.

Piotr Bizon 04-04-2019 08:41 PM

Thanks a lot. By any chance - what height ride adjustment is safe for 225/45r18 front 245/45r18 rear? Previous owner had 245/35 front and rear which made the car grind on speed bumps ( guess it Could be a result of worn out suspension or cut springs). Also - compared to new suspension, how beneficial will be to lower the ride?

I spot a complete set of bushings while browsing for parts - worth to replace them ?


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dkmura 04-04-2019 09:01 PM

Quote:

Originally Posted by Piotr Bizon (Post 1254233)
Thanks a lot. By any chance - what height ride adjustment is safe for 225/45r18 front 245/45r18 rear? Previous owner had 245/35 front and rear which made the car grind on speed bumps ( guess it Could be a result of worn out suspension or cut springs). Also - compared to new suspension, how beneficial will be to lower the ride?

I spot a complete set of bushings while browsing for parts - worth to replace them ?


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There is no "safe" ride height. Ride heights for either the Koni and Bilstein options are not adjustable, except by spring length. If you're concerned about speed bumps, I'd suggest retaining the OEM springs for maximum ride height.

Bushing replacement may be worthwhile, but it really depends on how hard your Z was ridden and put away wet.

Piotr Bizon 04-08-2019 06:21 AM

Thanks! Any thoughts on those ?

https://www.driftshop.com/d2-racing-...ssan-350z.html




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dkmura 04-08-2019 01:20 PM

Quote:

Originally Posted by Piotr Bizon (Post 1254257)
Thanks! Any thoughts on those ? https://www.driftshop.com/d2-racing-...ssan-350z.htmlSent from my iPhone using Tapatalk

Yep-stay away from cheap coilovers with a one year warranty.


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