MR RIZK

iTrader: (7)

Does anyone have any pros and cons when swapping out the suspension to stay with the current setup in the rear ie: seperate damper/spring or go coilover in the rear.

Cheers,
Michael

stumpmj

iTrader: (1)

The Unibody isn't meant to carry the load of the car throught the shock towers in the rear. There's a chance (although probably a very small one) that you could tear the unibody or put a shock/spring thorugh it due to the extra loading. An inboard spring will be a little harder to reach to adjust but I doubt that it would be significant issue.

ATL_Red_G35

iTrader: (8)

Great question MR RIZK.

aren't the HKS Coilovers are unibody?

I've heard that a lot of 350z and G35 Folks are tracking using Unibody coilovers?

Feedback please.

350Zteve

iTrader: (6)

Unibody coilovers? You have your terminology mixed up. Unibody is a term describing how the chassis of the car is constructed. The HKS kit uses a remote mounted spring in the rear just like stock and 99% of the other kits on the market for the Z.

ATL_Red_G35

iTrader: (8)

may be we're talking about progessive and linear? Sorry, I'm not too familiar with the terms since I've always had one-bodied coilover where the shocks and springs are together as one piece.

I know couple coilvers setups have the shocks and spring together in one body (progressive?) such as the new discussed Stance Coilovers.

https://my350z.com/forum/brakes-and-suspension/171488-new-stance-sus-coilover-review.html

__jb

iTrader: (3)

I'd be interested in hearing about the effects of having true coilovers in the back of a 350z or g35 too.

I suspect any issues would be noticed sooner in a G35 because it's heavier. Anyone have rear coilovers with the shock and spring as a single unit on a G35? Any problems?

MR RIZK

iTrader: (7)

My initial worry was the same as stumpmj and the strength of the upper mount. The issue for me is not the adjustment ie: is it easy. My concern is that if adjust ride height in the rear you are actually changing the pre-load on the spring. Also having the rear as a coilover you have more room to play with different spring setups as the size is pretty much standardised. (Providing you can re-valve your dampers to suit)

For argument sake I had a quick chat with Zeal and they sell both setups but recomend the coilover type for the rear.

Michael

ATL_Red_G35

iTrader: (8)

Michael,

Zeal suggest the one piece true coilover setup over the OEM's?

Brian@Performance

iTrader: (3)

Zeal has had much success with rear coilover setups on their application. I've been one of their running test mules for about 2 years now and haven't seen any problems. Been using them on the track and street and love them.

sen_jen

^ yes, and Top Secret uses 1pc. true coilover rears as well.

ATL_Red_G35

iTrader: (8)

I'm worried about the G35 since it's a lot heavier in the rear

stumpmj

iTrader: (1)

I wouldn't worry about spring selection. The kits that leave the spring in the standard position seem to all use a 5 inch OD spring so you can still buy anything you want in an Eibach race spring.

With that said, why would you want to move the spring to the shock body? There's no real advantage compared to leaving it in the place that the factory intended to take the load .

Resolute

iTrader: (2)

This has been beaten to death in another thread. Do a search for spring on damper coilovers, or better yet for motion ratio and you'll find it. It covers the cons of a spring mounted on the damper in terms of wheel rates and such. It's pretty long but there's lots of info in it.
Will