Droopy Bum Fix for the G Sedan - Version 2.0

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Old 06-28-2016 | 04:08 PM
  #46  
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Hey OP,

Sorry to dig this up but I have recently dropped my G37S sedan (rwd too) and the back currently sits lower (no passengers, empty trunk)



The Megan Racing springs I got seems to drop much lower on the rear than yours.

Now that im in the same situation. I came across something called "coil spring booster", looks like this:



Currently also trying to avoid going CO's but I can foresee issues with passengers/loading the trunk up.
Old 06-28-2016 | 04:26 PM
  #47  
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Originally Posted by stanchua
Hey OP,

Sorry to dig this up but I have recently dropped my G37S sedan (rwd too) and the back currently sits lower (no passengers, empty trunk)

The Megan Racing springs I got seems to drop much lower on the rear than yours.

Now that im in the same situation. I came across something called "coil spring booster", looks like this:

Currently also trying to avoid going CO's but I can foresee issues with passengers/loading the trunk up.
No problem. Bumping old threads is an opportunity for nostalgia, although it was only last year. And yes, your rear is very droopy. Kind of disappointing, isn't it? You go through all that effort to research things, buy parts, install or pay for installation... only to be unsatisfied.

That "spring booster" bushing looks very interesting. The channel design will probably keep the material from getting blown out from the compression. Good luck with it all.

Once you get the height right, and the car aligned, a set of 15mm or 20mm spacers will make for a clean look with those 18" sport rims.
Old 06-28-2016 | 04:32 PM
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Yea, the grove seems to be designed to hold the spring in place. I am going to research more on the dimension/width before getting them, then have my mechanic put these on and see how well they hold.

LOL those 18's will be used for winters eventually. That droopy rear is currently what's stopping me from getting aftermarket wheels...

And of course, thank you for the quick response!
Old 06-28-2016 | 04:42 PM
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Originally Posted by stanchua
then have my mechanic put these on
If you were DIY, then I'd say have at it. As it is, you're running the risk of falling down the exact same rabbit hole I did... you do know that, right?
  1. Springs + install + alignment
  2. Coil spacers + install + alignment
  3. Coilovers + install + alignment

Endless research hours, parts, scheduling and planning.... Ouch. $$$

While it was happening, I chalked it up to the fun of modding the car. But in hindsight, not so much.
Old 06-28-2016 | 05:02 PM
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Originally Posted by Rochester
If you were DIY, then I'd say have at it. As it is, you're running the risk of falling down the exact same rabbit hole I did... you do know that, right?
  1. Springs + install + alignment
  2. Coil spacers + install + alignment
  3. Coilovers + install + alignment

Endless research hours, parts, scheduling and planning.... Ouch. $$$

While it was happening, I chalked it up to the fun of modding the car. But in hindsight, not so much.
LOL yea I can see that coming but I don't have the right tools though... I am hoping that spring booster can hold the spring in place (spring sits in the channel/grove). The insulators you used didn't have that.
Old 06-28-2016 | 05:15 PM
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Originally Posted by stanchua
I am hoping that spring booster can hold the spring in place (spring sits in the channel/grove). The insulators you used didn't have that.
It certainly looks promising. I'd be concerned about it being split like in your picture. Can't imagine why it would be cut like that.

Also, that grove is on both sides, which seems odd. I can't imagine it being designed for the bottom bucket in our rear spring suspension, that means you'd have to look at this for the top of the spring, between the spring and the top-seat... which was exactly the plan followed here in this thread. Maybe if you could cut 1/2" off the device so that it laid flat against the shelf of the top-seat. But then I'm coming back to that split. Why would it be split?

The only other thing I can think of is to insert this thing in the *middle* of coil springs, which would screw up the rebound... but that certainly would explain why it's cut.

I'm just making guesses here. Don't know how this thing is intended to be used.

Last edited by Rochester; 06-28-2016 at 10:50 PM.
Old 06-28-2016 | 05:25 PM
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Im also interested in how that turns out. My X sits a good half inch lower in the rear compared to the front. Really annoying.

Do you have a link to that thing? It's really easy to get the rear springs in an out.. might just buy it and give it a shot.
Old 06-28-2016 | 07:28 PM
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I looked on ebay for "coil spring booster". There's a manufacturer called Mr Gasket that looks quite promising...

Mr Gasket 1287 Super Coil Spring Booster | eBay

They are also called "Coil Spring Spacer" or "Super Coil Spring Booster"...
Old 06-28-2016 | 10:59 PM
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Buy the coilover upper rear strut mounts seperately- they are aluminum
Old 06-28-2016 | 11:38 PM
  #55  
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Originally Posted by AARONHL
Buy the coilover upper rear strut mounts seperately- they are aluminum
If you can shed some lights on where I can get them. I'm in Toronto Canada btw...
Old 06-28-2016 | 11:43 PM
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I haven't tried it yet, but you can buy any part of the BC coilover separately
Maybe this link will help: https://store.bcracing-na.com/g37-c2901.aspx

???
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Old 06-29-2016 | 02:45 PM
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There's also these energy suspension slip over covers that Quigs1591 used, seemed to work real well, the info starts on this post and goes through a couple pages, might shoot him a PM and see if he's still happy w/ them
https://www.myg37.com/forums/brakes-...ml#post4003553
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Old 06-29-2016 | 03:02 PM
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Originally Posted by blnewt
There's also these energy suspension slip over covers that Quigs1591 used, seemed to work real well, the info starts on this post and goes through a couple pages, might shoot him a PM and see if he's still happy w/ them
https://www.myg37.com/forums/brakes-...ml#post4003553
Wow. You know I would have tried these if I'd known about them.

Not that I regret getting coilovers... that would be silly.
Old 06-29-2016 | 09:09 PM
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Wow. Perfect if that works. I'm gonna order that and give it a try.
Old 06-29-2016 | 10:16 PM
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Originally Posted by blnewt
There's also these energy suspension slip over covers that Quigs1591 used, seemed to work real well, the info starts on this post and goes through a couple pages, might shoot him a PM and see if he's still happy w/ them
https://www.myg37.com/forums/brakes-...ml#post4003553
Nice! I sent him a PM, hopefully he responds back on whether if they're still holding up.

Posting the part # on this thread, Energy Suspension 9.6112.

Quick edit. He replied back!

Originally Posted by Quigs1591
Hey the isolators are awesome. No sag and holding up real well. Best like $10 I've spent on that car.

Last edited by seeblackrain; 06-29-2016 at 10:28 PM.
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