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M030 From B4 to B8 - suspension upgrade


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Hi Guys, 

 

So for my car , 996 C2 , 2003 with 70 TMiles and M030 suspension .

 

Im currently in process of purchasing several parts for suspension refresh , so to say . 

Whole process came to a corner , left or right  , from perspective of refreshing it since rear shock absorbers , i have planned to purchase are not available , anywhere .

At least not for reasonable/decent  price 

 

Plan is  to refresh my stock M030 shocks , front and rear , where Bilstein B4 is standard which came with car .

 

 

Now , i have received front shocks but rear ones are not available and supplier does not know when they will be available .

I could not find them online , also , not a single supplier have them on stock, so only option , order them , pay them and wait for Bilstein to make them and deliver .. 

 

Development of situation is is that my supplier have offered me Bilstein B8 as option , more or less same price as B4 .

 

Now, guys ,.. 

 

As part of refreshment i have bought several additional parts, which are part of suspension and fit B4 setup, for all 4 corners.. 

 

supporting mount
hexagon nut M 10
compensating plate 
ring
bellows
additional spring - bump stop

 

So to say rubbers and plastics ..

 

Springs i plan to keep , so no new springs planned ..

 

Questions

 

Will all those part be usable with B8 shocks , so plug and play .

What will be height difference , is B8 height adjustable or height is same as M030 

WIll B8 shocks be delivered with installation manual 

 

 

I have read recent article , it seams, came in right moment for me 🙂

 

 

 

So positive opinion on Bilstein B8 , which is ok , but im not worried about  B8 on German Autobahn , my worry is as i wrote , will this be plug and play considering replacement of current ROW M030 

or something needs to be bought specifically beside refreshment parts i have already bought .

 

Have some experience with wrenching around , front shock mount , Wheel bearing , basic service  , sparks, mufflers , ignition Switch , etc .. 

But few additional thingies and advises  as additional knowledge is always welcomed .

 

 

Thank you very much guys ..

 

Zoran 

 

Edited by RennKolja
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Height is governed by the springs not the shock absorbers so you'll be fine in that respect.

The damper tune of the M030 will most certainly be different from either B4 and B8 even if their all made by Bilstein.

Can't say how much different but personally as long as the originals don't leak oil I'd not replace them with B8's and certainly not with B4's (as the latter are an OE replacement for standard shock absorbers not for shock absorbers in sport/lowered suspension set-ups like the M030 option. B8 is an OE replacement for those).

If the gas pressure is greatly reduced in your M030 shock absorbers or when they leak I would have them rebuild by a shop that has the ability to do so.

 

Edited by hardtailer
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