Spirited driving = sway bars?

Suspension related stuff goes in here.
Post Reply
User avatar
Kingme2
Posts: 291
Joined: Tue Aug 11, 2009 1:04 am
Your car is a: 1980 124 Spider
Location: Calgary, Alberta

Spirited driving = sway bars?

Post by Kingme2 »

So, I have a huge list of front end parts I'm about to order, pondering sway bars...

The factory front sway bar is 3/4", I think. I see some of the vendors sell a 1"....

So, what is best value? Upgrade the front, or go rear... Or do I need to save up and do both
Due to recent budget cuts and the rising cost of electricity, gas, and oil, we have decided to turn off the light at the end of the tunnel. We apologize for any inconvenience.

1981 Fiat Spider, all black... "Corvino", italian for the Raven
SoFlaFiat

Re: Spirited driving = sway bars?

Post by SoFlaFiat »

I'm sure there are many opinions but I have gone with a 1" front and plan on seeing how that feels before adding a rear.
User avatar
Kingme2
Posts: 291
Joined: Tue Aug 11, 2009 1:04 am
Your car is a: 1980 124 Spider
Location: Calgary, Alberta

Re: Spirited driving = sway bars?

Post by Kingme2 »

Noticeable difference?
Due to recent budget cuts and the rising cost of electricity, gas, and oil, we have decided to turn off the light at the end of the tunnel. We apologize for any inconvenience.

1981 Fiat Spider, all black... "Corvino", italian for the Raven
SoFlaFiat

Re: Spirited driving = sway bars?

Post by SoFlaFiat »

Wish I could say, but I haven't driven it yet... Someday soon!!
In any case, the rear is easy to install anytime you feel the need. Go with the 1" on the front no matter what, and add the rear if you like.
vandor
Posts: 3996
Joined: Sat May 23, 2009 1:23 pm
Your car is a: 1971 124 Spider
Location: Texas, USA

Re: Spirited driving = sway bars?

Post by vandor »

Since Spiders understeer a lot in stock form it is common to add a rear bar first, to reduce the understeer.

I really like my Spider with the 1" front and 5/8" rear bar, but I have friends that like to keep the stock front bar and add a rear bar.
Csaba
'71 124 Spider, much modified
'17 124 Abarth, silver
http://italiancarclub.com/csaba/
Co-owner of the best dang Fiat parts place in town
User avatar
azruss
Posts: 3659
Joined: Sun May 30, 2010 12:24 pm
Your car is a: 80 Fiat 2000 FI

Re: Spirited driving = sway bars?

Post by azruss »

i kept the stock front bar and added a rear bar from Mark Allison. Havent done extensive driving with it, but did test it out on some twisties with a very rough surface and also smooth curve. Everything under 50 mph. In that speed range the handling is so close to neutral.
User avatar
FiatMac
Posts: 290
Joined: Sat Aug 01, 2009 1:14 pm
Your car is a: 1982 2000 Spider
Location: Salisbury, North Carolina

Re: Spirited driving = sway bars?

Post by FiatMac »

I have a stock front with a 5/8 rear. This took care of the understeer. Ran on the track at VIR and handling was close to neutral.
Stan McConnell
Retired Mechanical Engineer
Salisbury, North Carolina
82 2000 Spider (driving)
78 124 Spider on the rotisserie
76 124 Spider parts car or possible Lemons racer
83 parts car
narfire
Posts: 3959
Joined: Sat Dec 27, 2008 2:14 am
Your car is a: 1980 124 spider
Location: Naramata B.C.

Re: Spirited driving = sway bars?

Post by narfire »

I have the 1" front but no rear (yet). With the Koni yellows, handling is terrific, big improvement over stock and KYB's.
I have 205/15's as well that helps....
80 FI spider
72 work in progress
2017 Golf R ( APR Stg. 1)
2018 F350 crew long box
Online
bobplyler
Patron 2022
Patron 2022
Posts: 823
Joined: Sat Jan 30, 2010 7:58 pm
Your car is a: 1979 spider 2000
Location: Charlotte, NC

Re: Spirited driving = sway bars?

Post by bobplyler »

I had a Pinto that didn't come with any sway bars.

I put on both a front and rear, and it handled great.

Later on, I ran over a muffer some ancient car had deposited on the road,
and it broke the bracket for the front sway bar.

I took off the front, and enjoyed the oversteer for several years. Then I
took off the back (was having too much fun, plus I got older, and less adventurous).
1979 Fiat Spider (since new)
2005 Lincoln LS (the wife's car)
2003 Chevrolet Cavalier (daily driver)
1999 Honda Shadow VLX 600
1972 Grumman Traveller 5895L (long gone).
redcars
Patron 2020
Patron 2020
Posts: 487
Joined: Sat Jul 31, 2010 9:36 pm
Your car is a: 1981 Spider 2000
Location: Collinsville, IL

Re: Spirited driving = sway bars?

Post by redcars »

I put on a 25mm front bar and that helped. I then add a 5/8 inch rear bar and like it better. The rear bar is needed to get rid of the under steer. I like no to a little over steer.
1987 Lotus Super 7 clone
1981 Fiat Spider 2000 AT
1982 Fiat Spider 2000 5sd
1970 Fiat Coupe
msrichmond
Posts: 18
Joined: Sat May 03, 2014 9:32 pm
Your car is a: 1977 Fiat 124 Spider

Re: Spirited driving = sway bars?

Post by msrichmond »

I kept the front bar stock. I have progressive lowering springs from Spider-Point in Germany (I think these are available stateside now). Yellow Konis.

I have not seen anyone else suggest this, so I will, the tip came to me from Kelly Dicker of Wine Country Motors in Napa, CA.

Instead of a rear bar, you double the long trailing arms in back. Those arms are what give you rear roll stiffness as a single, and when doubled, the effect is amazing. And they are easy to install outside the brackets that carry the original ones. Yes, you need very long bolts to pair them.

I have 205/60-13 tires and what feels to me like neutral cornering and a smooth ride.

MikeR ('77 Spider)
User avatar
Kingme2
Posts: 291
Joined: Tue Aug 11, 2009 1:04 am
Your car is a: 1980 124 Spider
Location: Calgary, Alberta

Re: Spirited driving = sway bars?

Post by Kingme2 »

Went with front and back.it's only money.... Right???

Sb here in a few weeks with all the front end rebuild supplies.... The, in another 4-5 months Corvino can come out and get the work done.

Yep, sitting here with two boxes full of supplies, no car... :shock:
Due to recent budget cuts and the rising cost of electricity, gas, and oil, we have decided to turn off the light at the end of the tunnel. We apologize for any inconvenience.

1981 Fiat Spider, all black... "Corvino", italian for the Raven
User avatar
chrisg
Posts: 746
Joined: Sun Jun 04, 2006 7:30 am
Your car is a: 1971 FIAT

Re: Spirited driving = sway bars?

Post by chrisg »

On two cars I set up for spirited driving (and used thusly), I ran stiff springs (pick your flavor...there are more off-the-shelf flavors today than I had at the time), Konis (actually prefer the sport Konis on 'soft'), stock front bar & the typical (addco) rear bar (rubber bushings). I'm getting ready to do my '72 Coupe and and I'm rather excited about the easy choices on the market now for everything suspension-related (even loaded A-arms that with bushings that last more than 6 months!). I have a number of spare front & rear bars, so that part is easy (except finding the hardware), but I'm rather intrigued by the doubling the rear arm concept...anyone have photos?
Chris Granju
Knoxville, TN
'71 FIAT 124BS (pretty), '72 FIAT 124BC,'76 FIAT 128 Wagon(ratbeast), '85 Bertone X 1/9, '70 124BC (project), 79 X1/9 (hot rod in rehab), '73 124BS (2L, mean), '74 124 Special TC, '73 124CS, '73 124 Familiare
User avatar
81SPIDERMATT
Posts: 1239
Joined: Mon Oct 11, 2010 5:10 pm
Your car is a: 1981 spider 2000
Location: FORT COLLINS, CO

Re: Spirited driving = sway bars?

Post by 81SPIDERMATT »

x2 on the double trailing arms .... pics ... build details
TStark
Posts: 127
Joined: Thu Sep 26, 2013 10:24 am
Your car is a: 1975 Spider
Location: NE CT

Re: Spirited driving = sway bars?

Post by TStark »

Seems to me the double trailing arms will torque some already sketchy metalurgy in a manner that was not intended.
Post Reply