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[pauls]

At the moment I have lowering springs with b4 shocks. I was wondering can I replace the rear springs with normal height ones without having to change the shocks. If I do this will it effect the handling off the car.

[symes]

shox are probably shorter mate

[RobG]

Had B4`s on my saloon, same length as the GM ones that came off

[chrisgixer]

Yes, and yes. It will need set up, assuming 15 to 30mm drop back to normal ride height, or it will have excess rear camber, wear the tyres on the inner edge and handle like poo. Although it won't be as drastic as in the front would.

Shocks will be fine.

[chrisgixer]

Had B4`s on my saloon, same length as the GM ones that came off

B4 are oe replacement, but will take a 30mm drop according to Bilstein spec.

[Marks DTM Calib]

Will be fine, B4's are a standard shock but can tolerate working with a 30mm drop and hence why they are also used with lowering spring's

[RobG]

Had B4`s on my saloon, same length as the GM ones that came off

B4 are oe replacement, but will take a 30mm drop according to Bilstein spec.

Just mentioning the fact that they`re the same length due to Amba`s post suggesting they may be shorter

[pauls]

Any springs to watch out for and would it be better to fit mv6 springs. Not sure what the current drop is.

[chrisgixer]

Any springs to watch out for and would it be better to fit mv6 springs. Not sure what the current drop is.

Iirc it has eibachs fitted? Which , also iirc, are 30mm drop. But check the spec on they're web site.

If so lowered sports chassis should raise it back up 15mm. Standard springs would add another 15mm ride height to that, so 30mm higher than it is now and, obviously, standard tide height should then be achieved.

What issues are you having? Ground clearance?

[pauls]

Yes its got the eibach springs so a 30mm drop. No major problems just wanted to raise backend a bit to help over sleeping policemen.

[05omegav6]

Any springs to watch out for and would it be better to fit mv6 springs. Not sure what the current drop is.

Plod saloon ones if you can more robust than standard retail ones...

[chrisgixer]

Yes its got the eibach springs so a 30mm drop. No major problems just wanted to raise backend a bit to help over sleeping policemen.

Come to think of it. 30mm drop does put the rear out of spec. Raise it 10mm and the settings are then achievable, baring in mind the rear track rods have to cope with the camber AND toe compromise.

I put 10mm rubber pads under my Irmscher 30mm drop springs just to raise the rear enough. To get the settings right. Point being, if your otherwise happy with the ride and JUST want to raise the rear 10 or 20mm, its possible to do so quite cheaply.
It's not totally ideal as a thicker pad could compress more over time, and it could be described as a bit of a bodge, and rightly so. But it worked well for me, and  after market rear ride height adjusters work in the same way, but with a threaded c spanner adjuster placed under the spring, in the same way. But, to save you googling something that might be unsuitable, or even a available, I'm not sure if these work with shorter springs as part of a set, as if the spring and adjuster are part of the total length of the oe spring.

Anyway. Pads under the springs are much cheaper, if money is tight. But probably wouldn't recommend that for raising the full 30mm, as the rubber will probably affect the spring rate and give a squidgy feel to the ride.

Just a thought.

[Marks DTM Calib]

You could use a poly material if concerned

[chrisgixer]

You could use a poly material if concerned

Didn't think of that


Trying to decide if it gives a slight difference in the angles of the spring seats as well. Makes the spring curve very slightly more than normal. Banana style. Or is my simple brain struggling again...?