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Suspension Geometry

Started by gizmo, May 19, 2007, 08:36:03 PM

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gizmo

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Suspension Geometry
May 19, 2007, 08:36:03 PM

I now have my car on a level garage floor and I've started to take measurments from the suspension (front and rear). The thing is I can't find any information on what the factory settings were. Can anyone help me with the following:

Ground clearance,  castor angles, camber angles, toe in or toe out settings and the king pin inclination.

Many thanks
Murena 2.2
Toyota MR2
Porsche 924
Mazda MX5
Reliant Scimitar GTE
Volvo 480 turbo
BMW series 3
Volvo 760 Estate
Honda 550 motorcycle

Anders Dinsen

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Re: Suspension Geometry
#1
May 19, 2007, 09:27:24 PM Last Edit: May 19, 2007, 09:30:48 PM by Anders Dinsen
The Espace Murena web site contains a scan of the workshop manual, but unfortunately they haven't scanned the part about steering, which is where the numbers are. But this is what I have in my (German) copy of the manual:

Front:
Caster: 4°±20'
Camber: -0°20' ±10'
Toe in: 0 - 2 mm

Rear (not adjustable):
Camber: -1°30' to -2°

These measurements are specified under the following circumstances: Full tank, 40 kg in trunk, 2 x 70 kg in the seats. This should result in the following clearances:

Front: 153 mm
Rear: 201 mm

The clearance on the front is adjustable, and is even in a section that has been published on Espace Murena :) Take a look at this:
http://www.espace-murena.com/Fichiers/ManuelAtelier/Ka0a602.pdf

Following page shows how to make the clearance measurement:
http://www.espace-murena.com/Fichiers/ManuelAtelier/Ka0a603.pdf

I think this should get you started ;)

- Anders
1982 Talbot Matra Murena 2.2 prep 142 (under restoration)

Used to own:
2001 Renault Matra Grand Espace "The Race" V6 24v
1997 Renault Matra Espace 2.0 8V
1987 Renault Matra Espace J11 2.2

gizmo

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Re: Suspension Geometry
#2
May 20, 2007, 01:56:12 PM

Excellent thank you.

Murena 2.2
Toyota MR2
Porsche 924
Mazda MX5
Reliant Scimitar GTE
Volvo 480 turbo
BMW series 3
Volvo 760 Estate
Honda 550 motorcycle

krede

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Re: Suspension Geometry
#3
June 25, 2008, 04:17:21 PM Last Edit: June 25, 2008, 04:19:40 PM by krede
QuoteFront:
Caster: 4°±20'
Camber: -0°20' ±10'
Toe in: 0 - 2 mm

Can anybody clarify for me how much 0-2mm is in degrees/minutes ?

I find the handling of my murena very lacking, with severe instability in crosswind and at motorway speeds.. so I tracked it today and it said +26' in both sides.. 

The camber of the front wheels were off by -20' ..(-53') but the same in both sides... can the camber be adjusted in anyway?

Bart_Maztra

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Re: Suspension Geometry
#4
September 23, 2011, 02:38:56 PM
Just set it up so the toe-in is zero.
www.maztra.nl

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