Suspension parts question

[rover3l]

I am wanting to overhaul my 94 active's suspension with new bushes, upper links tension rods etc. I asked Joe for a quote but don't understand his reply as it seems to indicate I don't need links or rods for the rear because it is an active model. Does this make sense - see his reply below

Here is the front: 54613-60U10 ASR 2 BUSH - STABILIZER V05A 2 4.38 8.76 56112-V0100 ASR 2 BUSH STABILIZER V05B 8 2.24 4.48 56112-A0100 ASR 2 BUSHING V05B 5 2.13 4.26 54468-66U00 2 ROD TENSION 0 87.36 174.72 54525-66U20 ASR 1 LINK COMPL-FRT SU J31 1 94.90 94.90 54524-66U20 ASR 1 LINK COMPL-FRONT J31 2 94.90 94.90

Here is the rear: 54613-04F01 ASR 2 BUSHING RUBBER V05A 2 3.24 6.48 54612-01P00 ASR 6 BUSHING-SHOCK V05B 9 2.18 13.08 Your component list shrinks due to the fact that your car is active. Your total would be $412.04 with ground shipping. If you have any other questions please feel free to ask. Thanks again Dave! -Joe Infiniti of Scottsdale 1.888.216.5328

[Q45tech]

The rear only has 4 sway bar end link bushings per side and 2 sway bar support bushings..........all the other bushings are driven [pressed] into metal arms and the hub knuckle............very very VERY expensive to replace these parts so they are never offered to average cost sensitive owner. Just like the $1000 rear sub frame.............not to say they don't harden and wear just the expense.

[rover3l]

Yikes

I want to replace the parts I originally mentioned to try to cure various rattles and crashes in the suspension when I am broken pavement. Do the pressed rear bushes wear just as quickly as the ones in the replaceable upper links and tension roads on the front. The car has done 83,000 miles

[texasoil]

Infiniti does not offer replacement bushings for the rear suspension members-only for the swar bar. http://www.courtesyparts.com/M...00001 is one link for aftermarket bushings. They are available in both polyurethane (lower cost, but harder) and another elastomer. OEM silicon filled bushings are not available--at least I have not found them yet. It is a shame. Maybe someone with Japanese connections and fluency can identify a source from Japan.

It is real hard to stomach spending $2000 + for replacement rear control arms and subframe when only the bushings need replacing.

[rover3l]

Texasoil

Can I ask what you have done in your own case. Have you replaced the bushings or complete parts or has it not been necessary.

My ride is good after fitting your recharge strut accumulators but there are rattles over rough roads from the rear which may or may not be suspension related. Also if I traverse a damage expansion joint in the road or a transverse crack (very common given Buffalo's freeze thaw cycles) their is a solid thud from the suspension which does not sound like a luxery car should. However the ride itself remains good even in this situation.

My plan was / is to replace the recommended components i.e. upper links, tension rods, roll bar bushings, but the difficulty at the rear of the active seems a bit of a road block. If these bushings typically don't wear very quickly then the other repairs may be enough. This is why it would be good to know your experience and that of any other active owners and also Q45Tech's experience at T3

[azskygod]

I am in the same situation -- looking for replacement front and rear suspension bushings for a 91 active. Does the list Joe gave you for the front include all of the bushings?

I seem to remember a thread where someone replaced the rear subframe bushings with polyurethane, but I can't find it. I especially need to find a replacement for the large silicone bushings where the actuator connects to the lower control arm. At 225k, I'm willing to try non-OEM alternative if any are available.

Since they Q shares some common Nissan components, are any of the 300Z bushings compatible?

AZSKYGOD

[Q45tech]

On ALL old LS400 we has to buy an entire knuckle [$500] to get 1 rear bushing. Drive out the old, pressed in the new [$140]and throw the brand new knuckle away saving the customer $350 in change labor...............finally a replacement bushing is available since May. Reducing the whole job to $200 each side instead of $640.

Unfortunately getting bushing [built inside metal sleves] is difficult due to small number of Q made.We have tried but they want a 1,000 piece @ $12 lot to be economical and we are not going to invest $72,000 [for 6 different ones] with no market. Bushing for lower front arm, rear camber arm, rear toe arm, rear locator arm and 2 [each different] for rear lower arm. Not to mention silicone subframe bushings.

[rover3l]

So what has been the experience with active Q's that have been overhauled with new accumulators and front bushings but the rear left alone due to the complications and expense discussed in this thread. I am basically trying to determine whether it is worth me doing the front and the roll bar bushings on the rear

[texasoil]

If one or more of the 4 subframe-to-frame bushings leaks (fails) it will cause a knocking/rattling sound when driving over sharp bumps. I have never seen a failure of the bottom actuator 'shock' bushing--but then I have not seen everything by a long shot. I have probably 12-15 of used rear struts in stock right now.

I am going to replace the subframe bushings on my wife's car with polyurethane ones and see how it rides. Right now, the left front one is bad, and the subframe is 'vertically isolated' with heavy 'rubber' washers I cut out of a MBZ model 126 front strut rod mount bushing. (5" highx 3.5' dia multi piece,for $20).

[texasoil]

Regarding service experience, mine is limited--a 92a now has 135K, 45K since recharge.Replaced both tension arm bushings only Replaced both front upper links, steering rack boots, all strut boots, and left front lower control arm. Presently has failed left rear (front) subframe-frame bushing.All else in good condition.

94 a, now has 43K miles since recharge, replaced left tension arm bushing, and right upper link. all else OEM and in good condition.

[natsoundup]

Can you get just the bushings for the lower control arm?

[Q45tech]

Texasoil for your reference we are starting to replace the screw on nitrogen pressure dampers [4] on the Lexus LX470 semiactive ride control.Exactly the same symptoms hard jarrring motion control and $700 each x 4. Dealer techs say it's common at 70-100k.