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      01-11-2019, 12:53 PM   #1
Sliktop
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Suspension Refresh! (JRZ RS One, Hotchkis, Ground Control)

Hey Everyone,
Just placeholding and will add some details later this weekend. My Z4MC is in the shop getting the suspension overhauled. I spent the better part of last year amassing parts to replace my 140k mile orignal suspension.

Part List- will fine tune later..
JRZ RS Ones (5” 550lb front, 5” 650lb rear, helpers front, gc weight jacks)
Hotchkis E46 M3 Sway Bars (f&r) w/ adj end links
New lemforder control arms and fcab’s
GC Race Camber Plates
TMS Adj rear camber arms
Front shock tower reinforcement plates

Already installed parts
AKG rear subframe bushings red75d
Rogue Eng diff bushings (f&r)
Rogue Eng trans mounts
Vibratechnics engine mounts Race
Bimmerworld RTABs (oem reinforced)
I might be forgetting a few things...

Pic of my car in the shop yesterday
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      01-11-2019, 03:33 PM   #2
ANILE8
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I'll be darned if this is not one of the highest if not the highest mileage Z4M on here.

As you are turning this into a track monster I would question why you have chosen to go with the following parts:
  • TMS ARCA with a rubber bushing end and not the solid tie-rod end
  • Stock FCAB and not a monoball
  • Polly subframe bushings and not solid alloy
  • Stock RTAB and not a solid monoball design

Maybe it is something to do with your racing class rules?

Looks like you have decided to go for monoball front camber plates and RSM so why cheap out on the other bushings?

Not sure if you might have forgotten to mention the RCA - Upper Inner Bushings. These also cop a real hammering and are also available in upgraded monoball designs for zero deflection.
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      01-12-2019, 03:18 AM   #3
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Oh. Saw your car in ig. Great parts!!!
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      01-12-2019, 09:19 PM   #4
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I wasn't aware they made front shock tower reinforcement plates for the Z4m. Are they simple bolt in ones? Are they really required on this chassis?
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      01-12-2019, 10:41 PM   #5
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You can buy them at your local BMW dealer or lots of places online.

E46 M3 plates fit fine, BMW Part # 51717036781

https://www.bimmerworld.com/Suspensi...Plate-E46.html
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      01-12-2019, 11:01 PM   #6
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Quote:
Originally Posted by ANILE8 View Post
You can buy them at your local BMW dealer or lots of places online.

E46 M3 plates fit fine, BMW Part # 51717036781

https://www.bimmerworld.com/Suspensi...Plate-E46.html
Is this something commonly done on the Z4m with suspension upgrades? Does it go on the top in the engine bay or on the top in the wheel well? Do you have to weld it in?
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      01-12-2019, 11:10 PM   #7
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Quote:
Originally Posted by JimBob0047 View Post
Is this something commonly done on the Z4m with suspension upgrades? Does it go on the top in the engine bay or on the top in the wheel well? Do you have to weld it in?
I used them when I installed my coilovers, just some extra insurance and the price is very low so why not.



You just sandwich them between the top of the camber plates and the strut tower. No welding required, it is a very DIY install.
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      01-13-2019, 09:11 AM   #8
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Quote:
Originally Posted by ANILE8 View Post
Quote:
Originally Posted by JimBob0047 View Post
Is this something commonly done on the Z4m with suspension upgrades? Does it go on the top in the engine bay or on the top in the wheel well? Do you have to weld it in?
I used them when I installed my coilovers, just some extra insurance and the price is very low so why not.

[IMG]https://www.dropbox.com/s/9jeds22drp...ll-16.jpg?dl=1[/IMG]

You just sandwich them between the top of the camber plates and the strut tower. No welding required, it is a very DIY install.

Luckily my shop GT Peace in Chantilly, VA have them on hand and will toss them in while they are installing my suspension on Wednesday. They are also going to make sure they don't interfere with the Vorshlag camber plate adjustments and leave enough thread for a strut bar. FTW! Thanks for sharing!
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