I’ve been looking around and even trying to find forums post but I have a 2013 g37x sedan and no matter where I look I can’t find higher them oem quality shocks And I really don’t wanna do coil overs I rather do shocks and springs do they make konis or bilstines for a different car that might fit on the g anyone have any suggestions?

 

We g37x/q40AWD owners are out of luck. No aftermarket struts from koni/bilstein/etc....

Mainly because the front shock mounting is different for 2wd vs 4wd.

 

You can put Koni yellows on the back (same mounting as 2wd), but still stuck with junk in the front.

 

What's the disadvantage of using coilovers?

Bilstein makes coilovers for this car...
A coilover is just a performance shock with a performance spring. Its like...the exact thing you're looking for. No?

 

I believe Bilstein only makes a kit for RWD.

 

Ah ok, you're probably right on that.

But again, a coilover setup is just a performance spring and shock...and in a lot of cases, the cost is similar to a spring and shock combo.

:shrug:

Maybe I just dunno something. Are the coilover options for AWD all quite bad?

 

I went coils and, while I have them set stiff, they don't have to be. Picked them up for probably the same as I would have paid for a set of stock struts and springs.

 

KYB makes oe replacement shocks that are equivalent to the sport shocks for the sedan. im running those now with swift springs and theyre great and I have already put 90k km on them.

 

hexotic. that is good to know. The prices on KYB's are pretty reasonable. From all I've read Swift are a well respected spring with good consistency & made in japan quality.


Having had coilovers on several other makes when I was more into modding, they have not been plug and play. You're often messing around with the ride height; adjusting the shock settings to try to dial them in etc.Adjust them again...and you'll need to get it aligned...then you'll want to corner weight it...
Even some bigger brands I've had several that I had to warranty, strange noises, which is a lot of extra work. Some of them rusted very quickly in salty winters, sometimes just one shock or a spring that then looks like crap. Not OEM standards. I've usually been mid range in quality, Tein etc. Maybe the highest end coilovers are what you need, then there is a fair difference in price when you start adding it all up.

 

In my experience, Tein makes excellent quality stuff...but yeah, their older setups with zinc plated threads would rust. Their threads are PTFE coated today...and from experience, they will not rust for a long long time. Their powder coating on the shock body and spring are also better than the factory coatings.

Problem with Tein has always been calibration. The damping profiles make no sense. The Flex for example, is an awful system that will last forever lol. The Street Basis Z is valved with too much high speed damping and there's nothing you can do about it because its not adjustable.

Too bad they dont make the Street Advance Z for these cars. Its a decent setup and its inexpensive.

Their Z line is made in China...but the valving profile on the Z line is an improvement from previous models.

You shouldn't ever have to adjust ride height after setting them up initially (unless you want a new ride height).

As long as you loosen and clock all the pivoting bushings, the height shouldn't change for years until the bushings start to eventually wear naturally. Same thing that would happen with any suspension...including stock.

Most cars that "settle" within a week or a couple of months do so because the bushings are rapidly tearing from not being properly clocked. Or you've bought a setup with a very low quality spring.

A coilover is just a spring and shock anyway, right? So..if you have a sinking car with coilovers, you're going to have a sinking car with lowering springs too. But...I've never had a car settle if the install is properly carried out.

Corner balance isn't necessary either. But its a nice option to have? I don't see that as a down side.

Anyway, I don't know what's out there as an option for coilovers for AWD cars.

The thing I don't like about lowering springs and stock length shocks is that you'll be using the bumpstop a lot more than intended, and the ride won't be optimal. Some shocks are valved well enough to control it...but even then, limited stroke isn't the best thing for ride comfort. If Infiniti could have made the car lower and still ride properly, they would have done it.

If there's a coilover option with good monotube shocks, "flat ride" (or close) spring rates, and independent body adjustment for height...you can probably make the car ride better than stock with some math, a tape measure, and a little time.

Once its set...you can choose to never touch the settings again.

AWD cars look like they already have a pretty short front shock. Are AWD cars taller than RWD from the factory?

I'm still figuring out this platform.

Good luck with your search. Just thought I'd share some general knowledge.

 

I'm pretty sure the AWD's are taller than the RWD's. Anyone confirm? I believe I've read that. Or maybe coupe vs sedan?
Nice that Tein has improved, but after my problems with two sets, I will not buy them again. Funny, I do have a set of Flex still on a car, and the ride/valving never felt right. Speaking of their valving, one of the larger miata vendors, who's also a racer, went around and around with their shock spec people, he finally gave up and dropped the line. Their approach to valving was fundamentally different from common theory, at least in that world.

Maybe it's just me, or more likely my younger mechanical self not being married and without children - I was always futzing with them. Of course you switch from autox, to street, to track, to street...you try to optimize - I have the $$ these days, just not the time, exact opposite.

I would look at corner balancing if you track your car; I felt a nice difference afterwards - on the track, the car felt more 'equal' in left and right handers. Caveat: this is in miatas where weight can make a big difference along with fully double wishbone suspension. We always do an alignment with the driver, or the equivalent weight, in the seat, you can see the alignment change.

Don't G37's also have an issue with being able to access the rear shocks if you want to change the shock settings? I recall someone having to take things apart to access the rear adjusters - all depends on where the adjuster are of course; but if on the top, access was only through the back seat or something.

 

Yeah, I know what you mean. I used to just blindly change stuff all the time when I was a kid lol.

Over the years though I've learned that any modified suspension setup is going to be a compromise.

Non-adjustable aftermarket setups dont take away the need/want to change settings. They just take away the ability. So you end up just living with something you're not happy with...or you end up changing out. At least in my experience.

If you search, you'll usually see people who want something more from their spring/shock combo. Key is really just seeing if these compromises affect you.

Looks like people generally like their Swift/OEM combos. Obviously its not a perfect solution. You'll be on the bumpstops all the time. But it seems to be a decent compromise.