AWD Rear Suspension differences (Strut / Springs)

[mb7050]

I/(We) need this info so what are the differences ?

please correct me if I´m wrong !



Normal VR4 91-95 and 1995 spyder VR4 (with ECS)
Rear Stock Spring Size 3 3/4" ID x 4 3/4" OD

Cars w/ sunroof and/or '96-'99 without sunroof and 1996 Spyder VR4 (without ECS)
Rear Stock Spring Size 3 1/4" ID x 4 1/4" OD

the Factory Upper Strut Mounts are also different and the rear struts

Stock Spring Rates:

All units in N/mm (lbs/in.)

Stock Spring Constants

'92-'93 FWD AWD
Front 30 (168) 39 (218)
Rear 35 (196) 28 (157)

'94+
Front 29 (162) 38 (212)
Rear 34 (190) 28 (157)

Spyder
Front 30 (168) 39 (218)
Rear 35 (196) 28 (157)


Shock Damping Forces (0.3m/s or 0.984ft/sec)

ECS (all) Expansion Contraction
Front Hard 2530(558) 1190(262)
Front Med 1580(348) 1120(247)
Front Soft 620(214) 970(214)
Rear Hard 1710(377) 1010(223)
Rear Med 1160(256) 880(194)
Rear Soft 560(123) 670(146)

Non-ECS Expansion Contraction
Front 1080(238) 540(119)
Rear 1000(220) 550(121)

[mb7050]

so can I use ECS upper mounts in my NON ECS car in this case 1996 spyder vr-4 ??
I would have to use ECS struts then too but would it work ?

[mb7050]

Is there a height difference beetween ECS and NON ECS rear springs/struts ?

[jba3]

so can I use ECS upper mounts in my NON ECS car in this case 1996 spyder vr-4 ??
I would have to use ECS struts then too but would it work ?

I *think* the upper mounts are a different size on ECS vs Non-ECS. If you get replacement struts at 3SX that aren't for ECS, you still have to specify if the car was ECS or not, and I think that is why.

I have never heard of "ECS Springs" or "Non ECS Springs", just for sunroof/no sunroof.

[mb7050]

this is what happens if you try to use Tein s tech lowering springs in your non ecs car(1996 Spyder Vr-4).

[mb7050]

^thats the reason why I´m asking this info. I would like to lower the spyder using lowering springs .

[Emilie@GZP]

DO you have any better pictures of what happened?

[mb7050]

I think the issue is that the upper strut mount is simply too small.Of course the shop could have botched the install too.

all I got :

[mb7050]

[mb7050]