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Old 03-07-2009, 01:36 PM   #31
The Gorilla
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Hi,

Having read this thread I can't believe that
anybody is running rear coilovers and are not using
the Z3 Rear Turret stiffeners.

They cost about 22.00 pounds for the pair,
and are available from the dealer.

Strange how guys running 600.00 Gaz or Leda
suspension on their E30's use them, yet guys
running CSL's with 2k plus of Intrax do not make
the small Investment.

Even stranger that the suspension selling dealer does not even
recommend them in the first place, and yet knows all
about suspension, most strange.

A cage only resolves the problem if fitted
with top plates, which most of the E46 ones
I have ever seen welded in do not, they are
more often welded to the side of the rear turret
for cross bracing and stiffness.

The coilovers punch through, due to the
suspension drop slowly weaking the metal as the
all the force it taken by the nuts on top
during drop, which after time stresses the
shell metal to the point, that once fatigued,
then on rebound, they will eventually punch
through.

Regards,

The Gorilla.
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Old 03-07-2009, 09:56 PM   #32
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2 x Z3 Reinforcement Plates (Part Number 51-71-8-413-35) ???
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Old 04-07-2009, 12:22 AM   #33
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What is the part number please?
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Old 04-07-2009, 09:13 AM   #34
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Quote:
Originally Posted by The Gorilla View Post
Hi,

Having read this thread I can't believe that
anybody is running rear coilovers and are not using
the Z3 Rear Turret stiffeners.

They cost about 22.00 pounds for the pair,
and are available from the dealer.

Strange how guys running 600.00 Gaz or Leda
suspension on their E30's use them, yet guys
running CSL's with 2k plus of Intrax do not make
the small Investment.

Even stranger that the suspension selling dealer does not even
recommend them in the first place, and yet knows all
about suspension, most strange.

A cage only resolves the problem if fitted
with top plates, which most of the E46 ones
I have ever seen welded in do not, they are
more often welded to the side of the rear turret
for cross bracing and stiffness.

The coilovers punch through, due to the
suspension drop slowly weaking the metal as the
all the force it taken by the nuts on top
during drop, which after time stresses the
shell metal to the point, that once fatigued,
then on rebound, they will eventually punch
through.

Regards,

The Gorilla.
Is this the part number 33 52 1 137 972?
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Old 04-07-2009, 10:15 AM   #35
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http://home.comcast.net/~matthew.c.s...ount/index.htm

found this!
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Old 04-07-2009, 10:49 AM   #36
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Quote:
Originally Posted by shimmy View Post
Sounds like these are a must! if only a minimum
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Old 04-07-2009, 10:58 AM   #37
kbird
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Quote:
Originally Posted by shimmy View Post
Nice work Shimmy!! Parts ordered, here on Tuesday so I can get them fitted for my Ring/Spa trip this weekend! Cheers

Last edited by kbird; 04-07-2009 at 11:11 AM.
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Old 04-07-2009, 11:07 AM   #38
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http://www.turnermotorsport.com/html...6&subcat_id=96

http://www.rogueengineering.com/Merc...&Category_Code
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Cha'mone Mother F**ker!
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Old 09-07-2009, 03:12 PM   #39
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So whats the general concensus on this then. I've got intrax and turner bush limiter kit. Seems to be a few different options with plates...?
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Old 09-07-2009, 05:49 PM   #40
The Gorilla
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Hi,

A good rear strut brace will also do the same
job as the Z3 reinforcement Rings.

The rear Intrax coilovers on my car are on Hangers,
which are used to run shorter rear springs.

Cage is welded to the side of the turrets, although
if I has specified it, I would have picked up the
rear turret top mount and spread the point load out
away, into the shell and the cage.

Shorter rear spring for Track work is better, although much
harsher and skittish on the road though.

E30 M3 DTM 92 cars ran hangers as well on the rears
for a shorter rear spring, so its not a new idea.


Regards,

The Gorilla.
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