124 Spider Abarth Stradale Build

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atruscott
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Re: 124 Spider Abarth Stradale Build

Post by atruscott » Wed Aug 21, 2019 3:55 pm

On IRS..... I think the early Abarth rally 124s were conventional???
1960 Autobianchi Bianchina Transformabile
1970 238 Camper OHV
1974 124 Wagon TC
1974 124 Special TC
1975 124 Sport Coupe
1976 124 Sport Spider (The Racer)
1981 Spider 2000 (The Resurrected)
1985 Pininfarina Azzurra
2017 124 Spider Abarth Elaborazione
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bartigue
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Re: 124 Spider Abarth Stradale Build

Post by bartigue » Wed Aug 21, 2019 4:15 pm

Not an authorative answer, because I was 1 when they raced the cars, but from what I understand:

There are ABARTH parts, ABARTH rally cars, and FIAT rally cars. FIAT rally cars sometimes had ABARTH parts but the pre-CS series had a conventional rear even in rally form. The CSA has IRS and was a FIAT-ABARTH car (you all know this). No doubt someone put an IRS on a non-ABARTH at some point.
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Brad Artigue
1969, 1969, 1970, 1979, 1980, 1981, 1982, and 1982 124 Spiders
1969, 1970 850 Spiders
77 X1/9
http://fiat.artigue.com
fp55scca
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Re: 124 Spider Abarth Stradale Build

Post by fp55scca » Wed Aug 21, 2019 5:39 pm

atruscott wrote:
Wed Aug 21, 2019 3:55 pm
On IRS..... I think the early Abarth rally 124s were conventional???
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--According to Martin Buckley, Essential Fiat 124 Spider & Coupe, Fiat entered the Rally circuit with AS 124 Spiders, and continued into 71-72 seasons with the 1608 BS version, and these all would have had conventional, live axles. Apparently the first CSA Abarth, with the independent rear suspension made its debut late in '72 in a prototype class, because the CSA had not yet been homologated. January '73 marked the official entrance of the homologated CSA with the IRS according to Buckley.
Jim Scurria
Norfolk, VA

1972 Fiat 124 Spider
1971 Spider - SCCA FP-24
1974 CSA Abarth Replica
1981 Fiat Spider Ratrod
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atruscott
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Re: 124 Spider Abarth Stradale Build

Post by atruscott » Wed Aug 21, 2019 7:38 pm

Completely forgot that we have the official Abarth Rally history document on here! (https://www.mirafiori.com/forum/downloa ... hp?id=2652)

Yep ... 72 was the introduction of the IRS according to this... and yes, now it was called the Abarth Rally.
1960 Autobianchi Bianchina Transformabile
1970 238 Camper OHV
1974 124 Wagon TC
1974 124 Special TC
1975 124 Sport Coupe
1976 124 Sport Spider (The Racer)
1981 Spider 2000 (The Resurrected)
1985 Pininfarina Azzurra
2017 124 Spider Abarth Elaborazione
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friedman
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Re: 124 Spider Abarth Stradale Build

Post by friedman » Thu Aug 22, 2019 8:38 am

Don't forget the front suspension was slightly different too.
Carl in Virginia
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Slartibartfaster
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Re: 124 Spider Abarth Stradale Build

Post by Slartibartfaster » Thu Aug 22, 2019 12:51 pm

Great footage of 124 Rally in action... much faster than I expected, and so agile! Be sure to watch the last 5 seconds.
https://youtu.be/qpzQ9AmAspI?t=46
72 124 Spider (the loud one)
79 Sport Spider 2000 (the date car)
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rridge
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Re: 124 Spider Abarth Stradale Build

Post by rridge » Thu Aug 22, 2019 2:38 pm

Spiders were professionally rallied almost from the start. Abarth got involved perhaps in 1971. But the Spider CSA, aka "Fiat Abarth 124 Rally" was a homologation special built to qualify modified Spiders for Group 4. Supposedly 1,000 were built, but sometimes after a hardy Italian lunch the FIA inspectors saw double.

"Stradale" literally means road or street, so these were not actual race cars. I've only seen one in person. It had what appeared to be the optional Pininfarina hardtop but no convertible top and the hardtop appeared to be fixed in place over the roll cage.

Yes, both front and rear suspensions of the CSA were different. As you might imagine, the front suspension got reinforcements to the usual failure points. The front crossmember and its attachment points were beefed up, the anti-roll bar was raised and its attachment to the control arms strengthens and a strut was added between the lower control arm and the firewall. The rear was IRS and appeared completely unrelated to the standard layout.
Attachments
Abarth Spider front strut.jpg
Abarth Spider front strut.jpg (622.65 KiB) Viewed 1949 times
Abarth Spider IRS.jpg
Abarth Spider IRS.jpg (468.3 KiB) Viewed 1949 times
Abarth Spider cross-member.jpg
Abarth Spider cross-member.jpg (674.88 KiB) Viewed 1949 times
Last edited by rridge on Thu Aug 22, 2019 6:24 pm, edited 1 time in total.
Richard
'81 Turbo Spider
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bartigue
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Re: 124 Spider Abarth Stradale Build

Post by bartigue » Thu Aug 22, 2019 4:10 pm

I wish they would have changed the standard 124 Spider over to that suspension and IRS. I guess everyone does. The simplicity and rigid build quality combined with the lightness of the aluminum parts would have made it much nicer to service and probably drive. Not that the standard Spider is a bad vehicle to drive; it's quite excellent.
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Brad Artigue
1969, 1969, 1970, 1979, 1980, 1981, 1982, and 1982 124 Spiders
1969, 1970 850 Spiders
77 X1/9
http://fiat.artigue.com
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ST3Racer
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Re: 124 Spider Abarth Stradale Build

Post by ST3Racer » Fri Aug 23, 2019 1:20 am

As I indicated in an earlier reply, the main reason for the improvements to the 124 Abarth Rally, and Stradale front and rear suspension was to better compete in FIA Rally in both the tarmac and gravel stages, hence the improvements. This worked for the 124 Spider in Rally, and the same suspension development was adapted to the 131 Rally cars as well. How many Championships?.... The FIAT/Abarth/Lancia Rally program is truly legendary.
For my replica, I had to make practical concessions in the suspension configuration (mostly stock, but modified), as the conversion parts for the Rally cars have never really been available. It would be nice to be able to duplicate the suspension changes, but without available parts, it just was not practical. This came up in build discussions when I built the car, starting in about 16 years ago, on fiatspider.com. The postings became almost ridiculous about what could be done to make the suspension ‘correct’, but the suggestions would require major reengineering of the car, and just didn’t make sense. The project would never be a completed, running car. For me, this is a Tarmac car, and as I have been racing these cars for many years(on tarmac), I knew what I could do to make the suspension better without having to change the basic configuration. I am very happy with the results. What I have done is to duplicate what I did for racing with my old successful ITC car, which works quite well on my replica for the street, and also works well when ‘tracked’. I knew this discussion would come up, so I have let you folks do some ‘bench racing’. It’s fun, but my objective in this build was to get a visually correct running car.
Bill McMahan
Parker, Colorado
'69 124 Spider 2L ex EP racer, ex Volumex NASA ST3 Racecar - retired
'69 rebodied with '79 backdated chassis as '72 DP 1.8L Vintage Racer
'74 124 Abarth Stradale Replica
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ST3Racer
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Re: 124 Spider Abarth Stradale Build

Post by ST3Racer » Fri Aug 23, 2019 1:45 am

Downward from the front notice the vented fiberglass hood, with Abarth rubber rear closures. Downward from the rear there is a relocated gas fill cap sourced from the 850 Sport Spider, and a Fiberglass rear deck lid, of which some examples had a rear badge in the normal spot, but most did not have any trunk lid badge. The fiberglass panels will flex, so a number of the examples had additional latches or pins added for panel stability, as explained in the previous reply.
IMG_1738.jpg
vented hood 1
IMG_1738.jpg (2.4 MiB) Viewed 1932 times
IMG_1742.jpg
vented hood 2
IMG_1742.jpg (2.6 MiB) Viewed 1932 times
IMG_1796.jpg
my vented hood
IMG_1796.jpg (81.83 KiB) Viewed 1932 times
IMG_1797.jpg
Abarth closure with added dsuz button
IMG_1797.jpg (62.42 KiB) Viewed 1932 times
IMG_1736.jpg
850 spider gas cap
IMG_1736.jpg (2.84 MiB) Viewed 1932 times
I used a different gas cap, as I didn't find out until much later about the 850 Spider cap. The pictures I had in research just weren't clear. I used a flip top cap from a TR3A, that I got from Moss Motors. It work nice, and is in the correct position. I don't have to worry about leaving the cap at a gas station...
IMG_1236.JPG
my gas cap
IMG_1236.JPG (408.15 KiB) Viewed 1932 times
The modification to the tank is adapted from the Abarth models, from my research.
IMG_1743.jpg
Abarth gas tank detail
IMG_1743.jpg (2.7 MiB) Viewed 1932 times
My install used parts adapted from the stock car, and the TR3A cap assembly
IMG_1238.JPG
install
IMG_1238.JPG (524.27 KiB) Viewed 1932 times
IMG_1243.JPG
tank mod, install
IMG_1243.JPG (495.83 KiB) Viewed 1932 times
. I had a radiator shop do the modifications to the tank for the install.
Bill McMahan
Parker, Colorado
'69 124 Spider 2L ex EP racer, ex Volumex NASA ST3 Racecar - retired
'69 rebodied with '79 backdated chassis as '72 DP 1.8L Vintage Racer
'74 124 Abarth Stradale Replica
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