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Old 30th June 2020, 12:45   #1
Heddy
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Default Front Spring Saga.

After a replacement spring (fitted at an RAC garage) the new spring was too firm and bounced the car all over the place. They fitted a spare I had (f.o.c) but it's only slightly better. Sooooo, I need 2 new front springs for a 2004 diesel that won't bounce me up against the roof lining. Recommendations please, I can't be faffing with colour codes, just need to be re-assured I get the right ones and a smooth ride. Thanks
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Old 30th June 2020, 13:01   #2
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Default Front Spring Saga.

If your bouncing to the roof lining, Iíd say itís your dampers that are shot😳

Iíll give you some suggestions for springs in a few mins when Iím back at my desk.


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Old 30th June 2020, 13:11   #3
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I would concur that it's probably not the spring which are the problem (they are obviously springing as they are suppose to do) so I would look at the dampers which control the rate of springing.

The standard test is normally to press down on each corner and the car should bounce about once or twice and then settle down. If it bounces more than that chances are the dampers are shot, and what you find is the springs start bouncing at certain frequencies, and at certain frequencies (resonance) you could well find yourself bouncing over the road.
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Old 30th June 2020, 13:20   #4
75driver
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For a diesel front suspension set up:

In the past Iíve used:
Suplex 28135, which I understand is equivalent to green blue, REB101430SLP: 380L x 13.75T x 176 OD.
I had used these springs with Sachs dampers 311240 & 311241, which should be equivalent to RND105340 & RND105350.

Not bad, but for more comfort Iíve also used:

Suplex 28136, which I understand is equivalent to green grey, REB101440: 395L x 13.75T x 176 OD.
Iím not sure what the dampers Iím using in conjunction with these, as they came off another car. The set up I have on this car may be a bit soft and ďwaftyĒ for some, but I like it.😁


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Old 30th June 2020, 17:20   #5
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Ok, a little ott regarding bouncing. Car was fine before the spring broke, replacement takes great effort to bounce once. old spring on nearside rises and falls with much less effort, ideal. The numbers confuse me, and the letters and colours if I'm honest, in fact a search failed to tell me what they mean. May use DMGRS and take a chance.
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