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How to adjust 350z rear height with coils

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Old Apr 16, 2015 | 09:01 PM
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Default How to adjust 350z rear height with coils


Rear^

Hey guys I just bought a 350z & it came with coilovers so the car was slammed too low.. I adjusted the front coilovers to raise the car but I could not figure out the rear. I see an aftermarket strut but I don't know if the rear spring is stock, aftermarket or coilover I couldn't figure it out anyone can help. I'll post pics of rear & front suspension






Front coilover that I adjusted easily

Last edited by nakel212; Apr 16, 2015 at 09:04 PM.
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Old Apr 17, 2015 | 07:31 AM
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Can anyone help me
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Old Apr 17, 2015 | 07:44 AM
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patience grasshoppa.... you wont always get answers quickly, people do work ya know.

btw, there is no need to post the exact same thing in 2 different places
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Old Apr 17, 2015 | 08:39 AM
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From just looking at the pics. The rear spring looks like it has an adjustable collar. Try that first.

I only dealt with lowering springs for the 350z, so my guess would be that. It's not a true coilover in the rear. So it's not like the fronts.
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Old Apr 17, 2015 | 08:52 AM
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I tried to turn the the part that is inside the spring (I think the collar) & the whole thing turned but didn't do anything. Sorry I dont know the name of the parts im a newbie.
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Old Apr 17, 2015 | 08:55 AM
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to me it looks like you need to take the nut and bolt off of the bottom of the coil, and screw it in... the use the locking ring and cinch it down tight
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Old Apr 17, 2015 | 09:01 AM
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That's not a true coilover set up, you have to spin the lower mounting bracket (the black part that says SD) down
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Old Apr 17, 2015 | 09:02 AM
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Hold down the thicker top part, then use your spanner wrench to adjust the the thinner one with the grooves.
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Old Apr 17, 2015 | 09:07 AM
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The perch above the spring adjusts your ride height; turn it towards the front of your car with the spanner wrench. Looks like it is maxed out (low).
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Old Apr 18, 2015 | 07:14 PM
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Originally Posted by AdvanZ33
The perch above the spring adjusts your ride height; turn it towards the front of your car with the spanner wrench. Looks like it is maxed out (low).
^^ This.

Most likely, you'll need the suspension at full droop AND may need to further unload the spring tension with spring compressors in order to turn the adjustment collar.

IOW, support the vehicle at points NOT under the suspension and let the suspension relax (hang down), attach your spring compressors and take the load off the upper perch then adjust. And one deviating comment to Advan's comment is that to raise the car back up, you will need to adjust the adjusting collar UPWARDS (counter clockwise). Make sure you either count threads of the collar or take careful before/after measurements to assure even side-to-side compliance.

EDIT: I think I was wrong on this and Advan is correct. It seemed counterintuitive to me after I said what I said and then I watched the vid that monkey7 posted. Forgot that the lower spring perch moves downward while the thread is forced downwards. Ooooops. My bad.

You MAY need to unbolt the bottom of the shock to give yourself enough droop of the lower spring perch. (That was the only way I could muscle my springs in....then jack up the control arm to engage the bottom shock attachment.)

GL...

Mic

Last edited by MicVelo; Apr 20, 2015 at 12:02 PM.
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Old Apr 18, 2015 | 08:55 PM
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Not trying to thread jack, but I need some clarification for myself (may help the OP too). In this image (excuse the paint skills), the collars are at the red circle. Moving them to the blue location with the spanner wrenches will raise the car if I am hearing this correctly? Can anyone confirm this?

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Old Apr 19, 2015 | 02:30 PM
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^Bumpity
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Old Apr 19, 2015 | 03:13 PM
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I haven't had time off from work to jack it up & try these things out but I will this week I appreciate the help guys!
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Old Apr 19, 2015 | 08:36 PM
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Skip to 10:42
It should explain what you need.
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Old Apr 20, 2015 | 03:47 PM
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Originally Posted by CJM
Not trying to thread jack, but I need some clarification for myself (may help the OP too). In this image (excuse the paint skills), the collars are at the red circle. Moving them to the blue location with the spanner wrenches will raise the car if I am hearing this correctly? Can anyone confirm this?
Yes.

A simpler way to put it may be: The more threads you see above the spring, the higher the rear will be. Right now you don't see any threads above the spring, so it's as low as it can go. (This is only for the rear perch(es) that have the adjustment collar above the spring. The fronts are different, of course)

Last edited by Z1NONLY; Apr 20, 2015 at 03:53 PM.
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Old Apr 20, 2015 | 04:55 PM
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Originally Posted by Z1NONLY
Yes.

A simpler way to put it may be: The more threads you see above the spring, the higher the rear will be. Right now you don't see any threads above the spring, so it's as low as it can go. (This is only for the rear perch(es) that have the adjustment collar above the spring. The fronts are different, of course)
Thanks for the clarification. I appreciate it.

Also, the video was extremely helpful as well
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Old Apr 24, 2015 | 12:54 PM
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Do I have to take the spring off the car like in the video to adjust it?
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Old Apr 24, 2015 | 12:56 PM
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Not if you have the spanner wrenches. But, dropping the spring bucket only takes a minute and you can turn the perches faster.
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Old Apr 24, 2015 | 03:28 PM
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I brought it the collar down about half inch & the car seems to be the same height getting frustrated.. I have a factory Jack so I have to manually raise the car everytime & take off the wheels




Did I do this wrong or what?

Bump

Last edited by SR71; Apr 24, 2015 at 09:31 PM.
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Old Apr 24, 2015 | 09:39 PM
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Looks like you can raise the car over 1.5 inch from that pic. Plenty of thread left
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