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help! how can i stop body roll?

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body roll stop
4K views 26 replies 11 participants last post by  GTV916 
#1 ·
:confused:Hi , iam running 19" wheels and the car rolls a little ,would like a firmer ride .what should i do springs or shocks? Do i need to lower and is it possible with 19"s ? :) help am confused :cry: thanks
 
#3 ·
To reduce roll, you maight want to look at thicker anti roll bars, lowering will help a bit as well, but you need to watch your camber if you go too far. To firmen things up, eitehr do both springs and shocks, or just shocks. don;t do just springs as the dampers won't be able to control them.
 
#4 ·
Adj shocks 1st




as a rule I'd say don't lower with 19s, I had to change some 19s to a std car to prevent rubbing. Possibly by rolling the inner rear arches & removing the plastic inner arch liners you could lower? It really depends on the wheels' ET & tyre width.

Adjustable shocks with good std springs, KYB are a lot cheaper than Alfa's, would be my choice or maybe adjustable coilover fronts with adjustable rear springs but as you're running 19s I think most manufacturers only supply these to lower the car?

I stress I'm not an expert but I have many GTVs & Spiders with different wheel & suspension set ups, plus I've recently been trying a few combinations myself.

I will add that as long as the shocks &/or springs aren't shot then I don't think these cars have much body roll anyway.

Clive
 
#5 ·
Thanks so much for your reply! Clive is there nothing you don't know about gtvs!? By the way my alfa is the one with 19"lambo gallardos on. Had it up for sale few weeks ago as was gonna go to the dark side and get buy an m3.
However when it came to it I bottled......well for now. Time to spend more money on her first.
 
#6 ·
Sid - the only way that 19" wheels would cause additional roll is if the overall wheel tyre diameter is now bigger than standard so you have increased the ride height. To be avoided! As Clive said, as standard, roll isn't really an issue but lowering (most people seem to use Eibach coilovers & you will need appropriate dampers) turns it into a roller skate!
 
#8 ·
Std best?




IMO the silghtly larger height of 19s, on 35 profiles, isn't enough to cause any additional body roll, in fact the lower profile probably helps reduce it.

Although I've got, & had, many different suspension set ups I'm a fan of a good std set up for everyday driving. Bigger wheels etc etc look good but our roads are so sh**!

The boy racers amongst us may disagree but they seem to be suffering from too much 'lift off oversteer'.:lol:

Clive
 
#7 ·
Lots

sidbrownalfa;3731016Clive is there nothing you don't know about gtvs!? By the way my alfa is the one with 19"lambo gallardos on. [/QUOTE said:
Loads, I'm constantly learning & still asking questions. Having had, and still got, lots of GTVs & Spiders it's been a fast/steep learning curve.

I could be tempted to do a deal with your wheels if you wanted....Teledials?:)

Clive
 
#12 ·
Hi guys ,this is great stuff proper gents with the info! Yeah so I am gonna replace my shocks with koni adjustables and replace my springs . Do eibach only sell lowering springs
Or can I buy original size?
Oh and clive thanks for the offer of a deal but I love these wheels ha ha ;-)
 
#24 · (Edited)
I believe the TS, and TB, ARB is attached to the lower a-arm, while newer 24v v6 have it attached to the damper/strut. The damper travels a longer distance, for a certain bounce movement, compared to half way in on the a-arm. This makes it possible to use a thinner ARB. When attached to the damper, there is no push/pull forces going trough the outer ball joint of the a-arm. This probably increases life length of this part as well.

The part are therefor not directly interchangeable, however the ARB´s are probably bent in a similar way to fit above the steering rack. Could also be a chance that an ARB for a 156 fits, as well as one from a Fiat Cupe?

Iäm planning on modifying the ARB on my TB, however i think that the end of the ARB is very close to the drive shaft, maybe making it impossible to mount ARB links going upwards there.
 
#25 ·
I believe the TS, and TB, ARB is attached to the lower a-arm, while newer 24v v6 have it attached to the damper/strut. The damper travels a longer distance, for a certain bounce movement, compared to half way in on the a-arm. This makes it possible to use a thinner ARB. When attached to the damper, there is no push/pull forces going trough the outer ball joint of the a-arm. This probably increases life length of this part as well.

The part are therefor not directly interchangeable, however the ARB´s are probably bent in a similar way to fit above the steering rack. Could also be a chance that an ARB for a 156 fits, as well as one from a Fiat Cupe?

Iäm planning on modifying the ARB on my TB, however i think that the end of the ARB is very close to the drive shaft, maybe making it impossible to mount ARB links going upwards there.
Thanks for clarifying that. Do you think putting an ARB over the top in the engine bay will improve stability for the GTV or will it upset the natural balance of the car. Ive heard some debate that it will stop body roll and hence reduce the passive rear wheels steering.

Also reducing body flex at the front will stop it understeering and hence promote oversteer as well. Conversely heard that it totally improves the handling of the car 100%
 
#26 ·
Are you talking about a strut bar? This does only stiffen the body, reducing flex, making the vehicle more responsive. You can compare it to putting on harder bushings (superflex), or mounting a roll cage. A strut bar can't really affect body roll, since is has no connection to the springs, dampers and wheels.

When driving on a track, changing direction quickly, it is necessary to reduce body roll since you need quick reaction. This might however not increase the maximum corner sped of a GTV, due to understeer that rear wheel passive steering is suppose to reduce when the body is rolling.

Another thing is body pitch when breaking, harder springs could reduce this.
 
#27 ·
I guess that the front bars of early GTVs (TS & TB), 155, 145/146 are all the same -> appr. 21mm and linked to the front wishbones. I chose the one from 146 model, it helps a lot - the car goes more "flat" around the corners. Unfortunately there are no stronger bars for the rear end...(a long time ago Eibach had a set for the GTV but they are out of production).
 
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