Alba AR3

{{Short description|IMSA GTP Lights sports prototype race car}}

{{Infobox racing car

| Constructor = Alba Engineering

| Name = Alba AR3
Alba AR3-001
Alba AR4{{cite web|url=https://www.racingsportscars.com/type/photo/Alba/AR4.html|title=Alba AR4|access-date=2 July 2022}}

| Category = IMSA GTP Lights/Group C junior (C2)

| Chassis = Titanium spaceframe covered in carbon fiber-kevlar composite body

| Suspension = Double wishbones, pull-rod, coil springs over shock absorbers, anti-roll bar

| Engine name = Mazda/Buick/Buick/Cosworth DFV/DFL

| Capacity = {{convert|1.3-4.5|L|cuin|1|abbr=on}}

| Configuration = 2-rotor/V6/V8,

| Turbo/NA = naturally-aspirated,

| Engine position = mid-engined

| Gearbox name = Hewland DG

| Gears = 5-speed

| Type = manual

| Differential =

| Fuel =

| Lubricants =

| Weight = {{cvt|1700|lb|kg}}

| Predecessor = Alba AR2

| Successor = Alba AR5

}}

The Alba AR3, and its derivative, the Alba AR3-001,{{cite web|url=https://www.racingsportscars.com/chassis/photo/AR3-001.html|title=Alba AR3-001|access-date=2 July 2022}} were a series of ground effect IMSA GTP/Group C junior (C2) sports prototype race car, designed, developed and built by Italian manufacturer and constructor, Alba Engineering in 1984, and used in sports car racing until 1988. Its best result was two 4th-place finishes; first at Lime Rock in 1984, being driven by Gianpiero Moretti, and the second at Kyalami in 1987, being driven by Maurizio Gellini and Ranieri Randaccio.{{cite web|url=https://www.racingsportscars.com/type/Alba/AR3.html|title=Alba AR3|access-date=2 July 2022}}{{cite web|url=https://www.racingsportscars.com/type/results/Alba/AR3.html|title=Alba AR3|access-date=2 July 2022}} It was powered by a number of different engines, including a naturally-aspirated {{cvt|4.5|L|cuin}} Buick V6 engine, a turbocharged {{cvt|4.0|L|cuin}} Buick Indy V6 engine, a {{cvt|1.3|L|cuin}} Mazda 13B 2-rotor wankel rotary engine, a naturally-aspirated {{cvt|3.0|L|cuin}} Ford-Cosworth DFV Formula One engine, and a derived {{cvt|3.3|L|cuin}} Ford-Cosworth DFL.{{Cite web|url=https://www.classicdriver.com/en/car/alba/ford-ar3/1984/171504|title=1984 Alba Ford AR3 - Cosworth ex-Le Mans|website=www.classicdriver.com}}{{Cite web|url=https://www.mecum.com/lots/FL0121-444969/1984-alba-ar3-001buick-imsa-gtp-race-car/|title=1984 Alba AR3-001/Buick IMSA GTP Race Car | S244 | Kissimmee 2021|website=Mecum Auctions}}{{Cite web|url=https://www.racecarsdirect.com/Advert/Details/119713/alba-ar3-001-ex-gianpiero-moretti---gtp-car?Published_by_Mike_Walters|title=Alba AR3-001 ex. Gianpiero Moretti - GTP car|website=www.racecarsdirect.com}}

An evolution of the AR3 and AR3-001, called the Alba AR4, was introduced in 1985, and used in sports car racing until 1989. It was powered by the same {{cvt|1.3|L|cuin}} Mazda 13B 2-rotor wankel rotary engine as its predecessor, and achieved 2 class wins.{{cite web|url=https://www.racingsportscars.com/type/results/Alba/AR4.html|title=Alba AR4|access-date=2 July 2022}}{{cite web|url=https://www.racingsportscars.com/type/Alba/AR4.html|title=Alba AR4|access-date=2 July 2022}}