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Discussion Starter · #1 ·
i fitted koni fsd shocks to my 147 gta today. did not replace standard springs. was disappointed because i did not find much difference. i expected the handling to improve and roll to decrease.there is not much difference when going through bends at high speed.similarly i do not notice an apprecible improvement on poor quality roads.i conclude that the original shocks supplied by the factory are really equal to the best aftermarket.
does anybody have experience with better shock absorbers or must i drive a few more days hoping i will be satisfied.
 

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I would wait a couple of days on the basis that they may need "priming" to work properly.

However I am surprised that the same kit seems to fit all the Alfa 147s including the GTA. I can understand this with top adjustables as you adjust the stiffness to suit the engine weight.
 

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not sure if the GT differs markedly to the GTA, but i found the KONI Sport (yellow adjustable) dampers to offer a superior ride to the factory dampers. much less 'crash' into ridges and potholes.

combined with the Eibach Pro Kit springs, i'm quite impressed with the ride quality, even with 19s.

:)
 

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I am seriously interested in the FSD's for my 156 GTA.

I had been in touch with Carter in the tuning forums who had them fitted to his GT and he is delighted with them. He has offered to take me for a spin but I haven't managed to hook up with him yet.

It would be great if you (alfa100) would let us know if they do bed in or if they are still below your expectations.

You can get the eibach springs and dampers for the same price as FSDs but given Lambo and others are using FSDs in their cars there must be something in it ...

Cheers,

Gary
 

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Discussion Starter · #5 ·
Covered About 700km. Fsd Feels A Little Better On Rough Roads.
Not Much Different In Handling Or Body Roll Yet. I Think The Right Rear Camber Has Changed. I Wonder If This Occurred Whilst Installing Fsd Which Was Done By Very Competent Persons. My Previous Reading Was Within Spec.-2 Months Ago.i Am Going To The Specialists To Attend To This.
In Reply To The Same Part For All 147's; Yes I Saw This In The Catalogue. But The Same Applies To Koni Sport Shocks And To Audi A3 Or Golf - All Derivatives.please Correct Me If I Am Wrong.
Will Post Further.
 

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Discussion Starter · #6 ·
ni fsd
i have the koni fsd for some time now and ready to give my opinion.
the 147 gta comes with fantastic suspension;shock absorbers included.
at first i coulld not notice any difference in handling and road holding. i wanted to decrease body roll and get through bends faster. this did not appear any different.i realised the alignment was not set correctly after koni installation;the rear wheels lost negative camber.
i had the alignment done again bringing it to factory specs;especially rear negative camber.
i noticed improvement over the standard shocks.
improvement especially over rough surfaces in terms of handling,road holding and comfort.
very improved turn in.
however i wish the konis were a little firmer. recommended but costly.
alfa 100
 

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Surely the new koni dampers are completely mismatched with the original springs?

And isn't it the springs rather than the dampers that have more effect on body control/roll etc? I know it's rather more complicated than this, and that the springs actually work in tandem with the dampers, but in simple terms am i right? :)

Probably not! :)
 

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Alfa100, glad to hear that the FSDs have turned out ok in the end and not been a wasted purchase.

I have the FSDs fitted to my GT with stock springs and also had the wheel alignment done at the same time. My immediate impressions after driving the car were that everything felt tight and perfectly setup. The suspension felt as firm as the standard setup with a lot less roll through the bends but a lot less crashy over bumpy roads.

I've read on here when members are comparing GTAs to GTs that the consensus is that the GT has slightly softer suspension, so maybe the FSDs are better suited to the GT and not hardcore enough for the GTA? After having driven the GT for several months now I think now that it would have improved body control over dips and crests even more if I had fitted uprated springs, my problem in this respect is that the Eibach spring set only seems lower the rear (see shiny cars comments) and hardly touches the front making the car look (IMO) a little saggy at the back, when it’s the front that really needs to be lowered. Novitec springs lower the car too much (but are dead cheap). I may get some springs fitted but only when I am sure the final result will look right.
 

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I read somewhere recently that Koni and Eibach are now selling a kit with FSDs and Eibach springs. It was a press release for KONI USA.

It also mentioned that whilst designed for stock springs, the FSD's will work well with springs up to 35mm lower.
 

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And isn't it the springs rather than the dampers that have more effect on body control/roll etc? I know it's rather more complicated than this, and that the springs actually work in tandem with the dampers, but in simple terms am i right? :)

Probably not! :)
I think you're right. My understanding is that stiffer springs will resist the forces of cornering more and therefore deflect less.

The dampers job is to control the forces of the spring when the spring is either loaded or unloaded through corners and uneven surfaces. The FSD's have a variable damping force that is mechanically controlled by some clever hydraulic widget inside. As a result, small movements on the damper are in the range that provides a comfortable damping force but as the degree of damper movement increases the stiffness of the shock increases correspondingly. If the balance is right it should be fantastic.

Given that they are now fitted to the Gallardo as standard and that Mercedes now use that technology (or their own version) how can they not address the issues of GTA suspension?

They are quite dear (around £415 on awesome gti) plus fitting of say £200. The Eibach Pro Street S coilover kit is £640 plus £350 fitting so its about £400 cheaper for FSDs.

Coilovers are an obvious mod but replacing the shocks is something that everyone will do at some point in the cars life. Is adding FSD shocks a mod that requires a higher insurance premium?
 

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AO Silver Member, 155 Lounge Winner 09
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After having driven the GT for several months now I think now that it would have improved body control over dips and crests even more if I had fitted uprated springs, my problem in this respect is that the Eibach spring set only seems lower the rear (see shiny cars comments) and hardly touches the front making the car look (IMO) a little saggy at the back, when it’s the front that really needs to be lowered.
^^^ funny you bring this up just now. yesterday, i did a cursory 're-measure' of the front (i need to do it properly though, with a 'level' to ensure it's accurate), and the rideheight seems to have sagged about 7mm since i last measured it. this is promising, and is what my alfa dealer (who supplied/fitted the springs) suggested should happen. over time, it may well sag another 7mm or so, and lower the car a total of around 15mm+ , which would be nice (even more would be better).

of course, the original springs might have sagged just as much over this period of time too (i bought the demo car with 1300km on it). though, the car remains only 10 months old with 8K km on it, so plenty of time yet.

:)
 

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Sorry if this is going off topic, Shiny car, are you measuring these heights with the same amount of fuel in the car each time? This will effect ride height. I measured from the ground up to the top of the wheel arch and the measurements are as follows, petrol gauge showing 3/8ths full

Front: 681mm

Rear: 681mm

Must be an optical illusion as the it looks lower at the rear.

gwales, adding stiffer springs will obviously firm things up another level, further reducing body role. Another reason I didn't do this was that I was afraid I might make things too firm, but in hindsight the GT could probably handle it.

I don't understand why fitting an Eibach Pro Street S coilover kit is more expensive than fitting FSDs, they both require removing the original shocks and springs. Doesn't the Eibach kit come pre-assembled with springs already fitted to the dampers? If so, they should be quicker and easier to fit as with the FSDs you have to re-fit the original springs (or new springs) over the dampers.

I'm insured with Adrian Flux and have told them about the FSDs and Tarox pads and I still got a very good quote at re-newel time (after some haggling), so it pays to make sure you have a mod friendly policy when you take out fresh insurance as some companies spit the dummy out as soon as you mention the word 'mods' and won't touch your car.

Another thing, I suspect some bushes may be on their way out as things don't seem as solid as when I first had the FSDs fitted. There is the dreaded creaking noises coming from the suspension, particularly in hot weather.
 

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Shiny car, are you measuring these heights with the same amount of fuel in the car each time? This will effect ride height.
good point - i hadn't considered it. though my car is usually at least half-full.

not sure how much of a difference it would make to the FRONT suspension cos of the position of the fuel tank. not as much compared to the rear.

I don't understand why fitting an Eibach Pro Street S coilover kit is more expensive than fitting FSDs, they both require removing the original shocks and springs.
it depends if you want the coilovers to be setup 'properly' or not. :p

it will take more time to adjust the rideheight to meet the needs of the owner. could actually take a fair bit of trial-and-error to achieve this.

plus, my understanding is that the car should be 'corner weighted' (aka 'corner balanced'). which is when the car is put on a proper set of scales (!) to see what weight each wheel takes. the perfect setup is when Front Left + Rear Right (ie: opposite corners) equals Front Right + Rear Left (ie: FL+RR = FR+RL). if they are 'out', then you should adjust the coilover accordingly (adjust the height of the spring perch).

you can go as far as 'sitting' in the driver's seat or adding weights there; cos having an extra 70~100kg (or whatever your weight is) on one side of the car will alter the corner balance. some good, simple info here in the first sections (a google search link):

http://www.nsxprime.com/FAQ/Performance/cornerbalance.htm

so it's one thing to 'do it by eye' or 'measure the distance', and another to properly 'corner weigh' the car. which is again, a time thing. hence $$.

:)
 

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Is adding FSD shocks a mod that requires a higher insurance premium?
I think replacing like with like shouldn't be really seen as a mod. If you see what I mean. I don't think replacing a worn damper with a third party unit that is designed for the vehicle should be regarded as a modification, unless the definition includes that the replacement should not perform better than the factory units, which would seem silly to me. I would regard a coil over unit as mod as it is a change to the original suspension spec.

I'm sure the guy who gets some no name dampers or brake pads for his old Holden (or replace with a common model for your country) at K-Mart (or some car parts store) thinks he is "modifying" his car. I'd argue with any insurance company that believes that fitting premium third party consumables is a modification to the vehicle. If you see what I mean....
 

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The tie fighter handles a lot better feel as though can carry more speed through the bends and on bumpy roads the car is a lot better
as for the price i paid £1400 inc vat supplied and fitted and checked
pm me for the details
 

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Doesn't the Eibach kit come pre-assembled with springs already fitted to the dampers? If so, they should be quicker and easier to fit as with the FSDs you have to re-fit the original springs (or new springs) over the dampers.
I dont think any kit comes pre assembled - you get springs and dampers - you still need your original top mount, bump stop, maybe lower spring pad and damper dust cover from your old set up.

But Eibach kit would be much quicker to install that any adjustable setup.

If you need to corner weight the car then this is a time consuming job although I'm not sure that its required for a road car
 

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i realised the alignment was not set correctly after koni installation;the rear wheels lost negative camber.
i had the alignment done again bringing it to factory specs;especially rear negative camber.i noticed improvement over the standard shocks.
Hi,

I have the same problem on my 147 JTD after installing the FSDs. I lost badly negative camber. I am waiting to fix the last two bushes from the powerflex on my rear and I will be up for alignment again, BUT the person who is doing my alignment said that he can not adjust the rear camber...that will be only possible if the shocks (FSD) have it on them...the thing is that I don't remember if they did or not...a picture of the rear shock will be very nice if anyone has it.

Do you know if the person who did your alignment used the FSDs to adjust the camber or???

Thanks.
 

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Discussion Starter · #20 ·
i am happy to see so many posts on this topic. looks like i need to change original springs to improve body roll. i am following this thread keenly for more pointers.thank yous to all.
 
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