Tuning What shocks do you have on your car? What springs?

Currently reading:
Tuning What shocks do you have on your car? What springs?

Ian S

New member
Joined
Sep 19, 2008
Messages
138
Points
30
Location
Eastern London / West Ess
My other thread, 65 views and nil responses!

So I'm instead asking a question that may be answerable :)

What shocks are your using / have you used on your Cinq / Sei.

What were they like?

What springs? Were they firmer or / and lower?

Did you cut your bump stops to a shorter length? Front and rear? By how much?

:)
 
Last edited:
Sorry, can't be any help specifically but a lot of the guys on here have standard shocks and apex lowering springs (which from your other post I think you've got already). I'm planning to put this set up on my car over the weekend.


I don't know a lot about KYB but I've only seen good reviews for Koni. Spax might be worth a look to. I guess it depends what you want from the car.
 
Yes, I have the Apex springs, but the drivers side is about 15mm lower than passenger. Sagged??

I wonder if it's all the road humps around here in eastern London that have done that. This small economical small wheeled car with small suspension travel simply can't traverse those without hitting the bump stops hard. It jars my back and neck.

In fact even with I got this car 5 1/2 years ago it was hopeless on larger normal bumpy lane hollows and humps. Throwing the car around and my head hitting the roof!

It probably needs normal height springs. Higher the normal, ie, the 900cc ones, might be even better.

In my previous cars I barely knew those bumps were there. And one of those was a Renault 5GTT with 250lb / inch springs on Konis at hardest setting. It was a LOT harder than this Apex stuff but it had maybe 4 times the suspension travel and never hit it's bump stops.

I'm reluctant to have Spax after my last experience with them, even though they're apparently all new now. Disappointing in every way, wore out very soon.

I'd like to get rid of the rowing boat handling. Probably new standard shocks would do that. And it's far too low to be practical.
 
Last edited:
Did you fit the springs that are fitted at the moment? I think Apex do a 60mm lowering spring so maybe this is what you have?
 
No, previous owner. I recall him saying something about 40mm. I think he didn't really know or care. As far as I can tell the Sporting is 10mm lower than the 900cc. These springs might be 30 lower than that, so 40mm in total.

IIRC, some of the vendors list -40mm for 900cc and -30mm for 1108cc.

I just looked back through the receipts and there is no mention of drop. Simply states Apex suspension kit. About March 2006.
 
I had a look under the car and by fortunate chance there was some text showing on one rear spring: 30-50102 HA 55/06.

30-5010 is the spring set that lowers by 30mm.

30-5000 listed as lowering by 40mm.

I'd guess 55 days into 2006 being the date of manufacture.

I'd guess both front and rear are 'progressive' springs.
 
i have the full apexi spring and damper kit. i think it is 30-40mm lowering.

i fitted new bump stops all round. the front bump stops are cut down a little shorter than standard and the rears are about 10-15mm shorter than standard. as far as i can tell it has never hit the bumpstops with this setup.

if you stick lowering springs on knackered old dampers you will hit the bumpstops alot more often.

i find the setup very good for what it is, but i think a bit lower and stiffer would be nice.
 
That for the replies :)

I plan to cut some off the rear stops. I bought two used stops from jiminwatford so I could cut those to experiment with.

My Apex shocks are 9 years old this month. Perhaps they are becoming a bit softer, especially the front right with less oil, that wheel can bounce a bit pulling away in the wet.

I had some fun tonight on the way to some friends, a lot of green lights and clear of traffic onto roundabouts allowing me to carry the speed on to them instead of having stopped each time, like normal. The car does roll quite a bit, then at a point of roll snaps into an under-steer that can't be corrected with more steering. The roll seems to take the tyres onto the edges too much, so a flatter performance would yield brisker safer cornering.

To get this, harder springs are needed I think. That how's it's been with previous cars. With my 5GTT, the OE springs may be 110 lb / inch. My first 'upgrade' was to 180 lb / inch. WAY better at turn in. But the next ones at 250 lb / inch were a LOT better again. Spax were not firm enough to control the 180's, but Koni yellows adjusted to max for rebound were fine with the 250's, but maybe a slightly softer bump setting would be better. Alas, none of that is doable with the Cinq as they sold the last of the adjustable Koni yellows and wont' make less that 25 sets, I think it was. Anyway, I don't really have the spare cash or time or enthusiasm to do all that again at this time for the Cinq. That's why I want a ready made solution.

With harder springs, the shocks then would need softer bump and firmer rebound setting. These thing need to be reasonably matched.

So what to do this with? I guess right now for the MOT I could try just one new Apex front shock and see what that does to the overall effect.

i fitted new bump stops all round. the front bump stops are cut down a little shorter than standard and the rears are about 10-15mm shorter than standard. as far as i can tell it has never hit the bump stops with this set-up.

i find the set-up very good for what it is, but i think a bit lower and stiffer would be nice.
Were they standard Cinq bump stops or those varying density foam type that are supposed to add a progressive extra support?

With my car, the gap between the top of the front shocks lower 'body', and the bump stop, is about two fingers, or maybe 30mm. So it wouldn't take much of a bump to be hitting into those.

The rears are about one finger or maybe 15mm. So constant hitting. The car will be leaning on the outer one of them all the time when cornering. Trimming them off another 15mm may make the back roll further and make the cornering worse, hence my spare pair.
 
Last edited:
just standard bumpstops i got off ebay, nothing special. tbh, looking at the rear i think i could have got away without cutting them. it isnt too much different to the standard ride height in my opinion.

extra suspension travel will not decrease the handling if you are just hitting the bumstops at the moment. you need some movement otherwise it will handle like a forklift (badly)
 
I just cut 25mm off the rear bump stops and the ride is vastly better now.

The knocking rear trailing arm bushes are a lot quieter, I presume, because the rear suspension was pivoting on the bump stops.

Those Apex springs have been on there for perhaps 8½ years and may have sagged into a lower drop than when they were new? I plan to swap them to see if the left side then is lower. If so, that might even up the car when the driver is in there.

If your new 30mm lowering springs are not much lower that your OE springs, maybe they had sagged?

The front Apex shocks were worse for wear. Some corrosion of the rod may have damaged the seal on the left and allowed the oil to leave and there was very little compression damping, though there was some outwards.

The right still had gas pressure and some damping, but less in both directions than the new pair of Apex shocks that I bought to replace them.

Firm rear suspension can keep the back in place and reduce under steer which can be the result of the back rolling and then pulling the front over. On my 5GTT I found this to be the case when I fixed it with very hard rear shocks in the form of Bilstein very high gas pressure mono tubes (made for a tarmac rally car), but the rear wheels still had 90mm of travel if hitting a bump. Some (class winning sprint people I know) people put extra rubbers on the rear piston rods to reduce travel and achieve the same, which seems to work very well for them on smooth road, such as some sprint tracks, but which I found very bad on bumpy lanes, as you said. But it remains a popular cheap fix in the 5GTT world to 'slam' the car onto the stops. Harder springs may have done it but as the 5 has torsion bars there are few or no options for that.
 
Last edited:
Back
Top