Shocks

Discussion of Infiniti's amazing (and underrated) sport-luxury crossovers, the EX35 and EX37. For 2014, the EX series will be renamed QX50, in line with Ininfiit's new naming conventions.
sherwooa
Posts: 53
Joined: Thu Jan 12, 2017 1:47 pm
Car: 2012 BMW E92 M3
2004 G35 Coupe 6MT (sold)
2008 EX35 AWD Journey
2011 Nissan Murano SL

Shocks

Postby sherwooa » Mon Oct 12, 2020 5:39 am

Hello all,

At what mileage/age have you been replacing front shocks on your EX? Our '08 EX is at 95K now and the ride up front seems a bit rough. I don't see any obvious signs of leakage, and the bounce test isn't particulary telling, but 95K and almost 13 years (Nov '07 build date) seems like it's well past the age to replace these.

It looks like Nissan/Infiniti is no longer making the OEM shock and everywhere I look I see the KYB shock as the OEM recommended replacement so I'm assuming that's the one to go with - have any of you used these? Did you also replace the shock "insulator assembly" (top mount)?

Any other suspension components to replace at this age/mileage to refresh the ride, e.g. lower control arms? The car seems to track straight and has no undue noises during cornering, so I don't just want to start replacing things for no reason, but curious to hear what others have done.

Thanks in advance!


sherwooa
Posts: 53
Joined: Thu Jan 12, 2017 1:47 pm
Car: 2012 BMW E92 M3
2004 G35 Coupe 6MT (sold)
2008 EX35 AWD Journey
2011 Nissan Murano SL

Re: Shocks

Postby sherwooa » Mon Oct 19, 2020 11:54 am

Anyone?

Eric.
Posts: 12
Joined: Fri Dec 13, 2019 6:07 am
Car: 2016 Infiniti QX50 RWD

Re: Shocks

Postby Eric. » Thu Oct 22, 2020 8:54 am

This doesn't apply to specifically the EX, but at 120k, I replaced the shocks on my old V36 2007 G35S (this was 2018?). No particular reason besides boredom/it was old. The originals were fine, and there was no difference when I put on the 30k used OEM replacement shocks. I was surprised. What did need replacing were both lower front control arms. I went with Beck/Arnley on those, as they were 1/2 the price of Nissan parts. It's not a horrible DIY, at least on a RWD G. Clunking tipped me off for those. I did the swaybar endlinks as well, but the originals turned out to be fine. If you do replace those, get OEM. The aftermarket options, at least the Moogs that I used, needed to be greased every 5k or so. Otherwise they'd pop and clunk.

Anyway, this leads me to believe that the OEM suspension components on these cars are pretty good. That said, the QX is 500lbs+ heavier, so it may be less kind.

sherwooa
Posts: 53
Joined: Thu Jan 12, 2017 1:47 pm
Car: 2012 BMW E92 M3
2004 G35 Coupe 6MT (sold)
2008 EX35 AWD Journey
2011 Nissan Murano SL

Re: Shocks

Postby sherwooa » Thu Oct 22, 2020 11:09 am

Eric. wrote:
Thu Oct 22, 2020 8:54 am
This doesn't apply to specifically the EX, but at 120k, I replaced the shocks on my old V36 2007 G35S (this was 2018?). No particular reason besides boredom/it was old. The originals were fine, and there was no difference when I put on the 30k used OEM replacement shocks. I was surprised. What did need replacing were both lower front control arms. I went with Beck/Arnley on those, as they were 1/2 the price of Nissan parts. It's not a horrible DIY, at least on a RWD G. Clunking tipped me off for those. I did the swaybar endlinks as well, but the originals turned out to be fine. If you do replace those, get OEM. The aftermarket options, at least the Moogs that I used, needed to be greased every 5k or so. Otherwise they'd pop and clunk.

Anyway, this leads me to believe that the OEM suspension components on these cars are pretty good. That said, the QX is 500lbs+ heavier, so it may be less kind.
Thanks for the reply. Interesting that you felt no difference with shocks that had 120k on them - I would definitely think replacing at that mileage would have made a difference, unless the roads are super smooth where you live, LOL.

I'm not having any clunking in turns, etc. but might be worth swapping out the LCA's anyway given age. I'm sure the bushings are pretty worn in them at this point.

Eric.
Posts: 12
Joined: Fri Dec 13, 2019 6:07 am
Car: 2016 Infiniti QX50 RWD

Re: Shocks

Postby Eric. » Thu Oct 22, 2020 11:31 am

Yeah, it was odd. I did the very scientific "how hard is it to push the pistons down and then watch the rebound speed" test as well, and they were pretty much identical. I suppose the other side of the coin is perhaps the 30k shocks that I got were also worn. Who knows. They were free. I went used, because like you, I could not find new OEM parts.

My QX50 only has 35k, so hopefully it'll be a while before it needs anything... at which point it will be truly impossible to find any factory parts, new or used. Mine needed a driveshaft (well, rear u joint, but it comes as one unit), and Nissan had to make the thing. Took months.

I'd poke around everything before replacing things. I was surprised how nicely the rubber components aged in that car, though that is very environment dependent.

sherwooa
Posts: 53
Joined: Thu Jan 12, 2017 1:47 pm
Car: 2012 BMW E92 M3
2004 G35 Coupe 6MT (sold)
2008 EX35 AWD Journey
2011 Nissan Murano SL

Re: Shocks

Postby sherwooa » Thu Oct 22, 2020 11:41 am

Yeah, maybe the 30k shocks were worn, but free is always good. I used to have an '04 V35 G35 coupe, but had proactively replaced bushings in the control arms for some higher performance whiteline bushings, and put in adjustable performance shocks, so never really got to experience high mileage related wear on that car. Though the compression rods needed replacing twice in my 65k miles with it. The EX doesn't seem to have those.

The KYB shocks seem to be the only option for EX shocks that I can find anywhere, and are pretty inexpensive, though I haven't called the dealer to get a quote from them yet...
I replaced the rear shocks with the KYB's myself earlier this year and they seem to be a decent replacement, but since I still notice the poorer ride up front, not sure it made a ton of difference overall.


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