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LHM spheres on a C6? |
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took
 
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 Member No: #5286
Location: OSLO |
Hi. Is it possible to use the old type, green LHM accumulator spheres, as suspension spheres on a 2,7? As far I can understand the volume is about the same, the threads are equal, and there is no damping in the LHM accumulator spheres? The availability of LHM spheres are better and it is easier to recharge them, so it would be great if its possible. | ||
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cit-rotti
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  Member No: #3753
Location: Bayern |
Of course it works - basically no problem. The accumulator balls have a slightly larger volume and usually 62 bar. I have been riding these balls in the front for a long time - the suspension is somewhat softer in connection with the higher buoyancy pressure. The ball from the hardness regulator is still original. In the back, 62 bar would probably be too high - I think up to 50 bar is acceptable. Wolfgang |
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Ranger12
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 Member No: #4492
Location: Somewhere in the darkest recesses of England |
Hi there, I have a C6 2.2 hdi manual 2007 (EcoTech Suspension), I had all my spheres recharged at Pliaedes about 3 years ago, but suspect that they need replacing, particularly the central spheres front and back. At low speed (30mph or less) in particular, when going over speed-bumps or significant troughs, my car feels like it is hard and bouncy and bottoming out at the front, and is uneven causing side to side wobble, and feels like all four corners are unbalanced. At higher speeds on average roads it feels ok, but when cornering right or left at low speeds with bumps, it feels like the car has no suspension, and bumps are felt and heard in the car. Another related issue is that if the car encounters a long sequence of varying bumps and troughs around 40 - 60mph, it seems to get flustered and confused and damping becomes erratic (feels soft when it should be hard and vice-versa). I think these are all signs of degraded spheres, and so am looking to replace them, but came across this topic, and as I have wondered the same about using original green LHM spheres, not the pan-head LDS ones currently fitted and recommended, I thought I would post and ask how the ride quality/road behaviour changes? I note cit-rotti's post, and wonder as it is 2 years later, how is it working out using green spheres on a C6 without the built in dampening? Is there even enough room to fit green spheres under the bonnet? My car doesn't have variable damping, so no electrical connectors on the tops of my struts. Is it possible to use green spheres in all 7 areas, or is this something that should be avoided? Basically if you are using Green, non-dampened Spheres on a 2.2 hdi manual, what results, and what recommendations would you make? If it means my C6 will feel more like a CX, then I am even more likely to try this, but I don't want to end up damaging other components, or make it dangerous to drive, she's an old lady now, just passed 150000 miles! |
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cit-rotti
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Member No: #3753
Location: Bayern |
Ranger12 wrote ... "I note cit-rotti's post, and wonder as it is 2 years later, how is it working out using green spheres on a C6 without the built in dampening? Is there even enough room to fit green spheres under the bonnet? My car doesn't have variable damping, so no electrical connectors on the tops of my struts." No problem in terms of size. My contribution is only suitable for C6 vehicles without AMVAR in terms of hardness adjustment – otherwise, of course, it is not. The corner balls with damper inserts on the C6 2.2 should preferably be original balls, because their damper tuning matches the vehicle. Missing tarrier pressure can be refilled – whereby a moderate pressure increase of 5 bar ensures a smoother ride. If the ride is too hard, a greater pressure increase in the front ball of the hardness regulator (up to 100 bar) can be used to achieve better suspension response to short impacts. |
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Ranger12
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Member No: #4492
Location: Somewhere in the darkest recesses of England |
Thank you so much for your response, I didn't get notified as normal, so only saw this today whilst searching for a new problem. I found the issue, my right front sphere was punctured and dumping Nitrogen into the system. All my spheres have original Citroen stamps, but were recharged at Pleiades, and after 3 years I decided to buy new IFHS spheres from ebay. I replaced all seven, even though only the R/H/F had been damaged by a kerb-height manhole cover in the middle of the road at 40mph (the road around it has sunk, and rather than repair, it was bodged, and left protruding as high as an average kerb. I tried to avoid it, but couldn't as there was not enough room on my left to do so, and the R/H/F hit it heavily, and even then I thought that may have damaged it - shortly after it became apparent it did not survive the encounter. The new IFHS spheres I bought were 54 Bar front, 40Bar rear, with 70 Bar main, and 2 34 bar rear accumulators. The ride is excellent, best I have ever experienced, and it was pretty good after Pleiades 3 years ago. The rear, on the lower-bar spheres seems to be working much better than before, and the car is feeling more like a CX, handling is spot-on and comfortable, with only the very occasional bump/hardness felt (not CX-like). I am particularly interested in eliminating slow speed bumps, which is still present however, but note what you have said regarding the front accumulator pressure, and will try this at a later date (when I have recovered from the £500 sting of 7 spheres. Thank you for answering my questions re the LHM spheres, you've given me a much better idea of what's what. |
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