{{Short description|Japanese grand touring race car}} {{Racing car | Car_name = Vemac RD320R | Image = [[File:Mach GoGoGo Shaken RD320R 2011 Super GT Fuji 250km.jpg|250px]] | Category = [[Super GT]] GT300 | Constructor = [[Vemac Car Company|Vemac]] ([[R&D Sport|Tokyo R&D]]) | Designer = Masao Ono | Team = {{ubl |[[R&D Sport]] |Team B-1 |Team LeyJun |Team [[Speed Racer|Mach]] |Verno Tokai Dream28 |[[Direxiv|Direxiv Motorsports]] |Yokoyama Racing |Avanzza Rosso }} | Drivers = {{ubl |{{flagicon|JPN}} [[Shinsuke Shibahara]] |{{flagicon|JPN}} [[Tetsuji Tamanaka]] |{{flagicon|JPN}} [[Yasutaka Hinoi]] |{{flagicon|JPN}} [[Osamu Nakajima]] |{{flagicon|JPN}} [[Hiroki Yoshimoto]] |{{flagicon|JPN}} [[Nobuteru Taniguchi]] }} | Chassis = Hybrid steel aluminum | Front suspension = Double wishbone<ref name="SGT" /> | Rear suspension = Double wishbone<ref name="SGT" /> | Engine name = [[Honda]] [[Honda C engine#C32B|C32B]] 3,424 cc [[V6 engine|V6]]<br>[[Porsche]] [[Porsche flat-six engine|M96/77]] 3,598 cc [[Flat-six engine|F6]] | Capacity = | Configuration = | Turbo/NA = [[Naturally aspirated]] | Engine position = [[Mid-engine]]d, [[longitudinal engine|longitudinally mounted]] | Power = 380 hp @ 7500 rpm<br> 297 lb-ft (402 N.m.) @ 6500 rpm<ref>{{Cite web|url=http://supergt.net/archive/classic/supergt.net/supergt/2005/05team/05team_data/05tm002en.htm|title = SUPERGT.net | 2005 Team Information}}</ref> | Gearbox name = [[Hewland]] | Gears = 6-speed | Type = [[Sequential manual transmission|sequential manual]] | Differential = | Length = {{convert|4467|mm|in|1|abbr=on}}<ref name="SGT">{{Cite web|url=http://supergt.net/archive/classic/supergt.net/supergt/2005/05team/05team_data/05tm002en.htm|title = SUPERGT.net | 2005 Team Information|website=Supergt.net}}</ref> | Width = {{convert|1825|mm|in|1|abbr=on}}<ref name="SGT" /> | Height = {{convert|1120|mm|in|1|abbr=on}}<ref name="SGT" /> | Weight = {{convert|880-1150|kg|lb|0|abbr=on}}<ref name="SGT" /><ref name=md>{{Cite web|url=https://jalopnik.com/this-is-one-of-the-most-interesting-race-cars-america-h-1829865370|title=This is One of the Most Interesting Race Cars America Has Never Seen|date=20 October 2018}}</ref><ref>{{Cite web|url=http://www.vemaccars.com/e/rd180/index.html|title = VEMAC}}</ref> | Fuel = | Tyres = [[Yokohama Rubber Company|Advan]], [[Kumho Tires|Kumho]], [[Dunlop Tyres]] 300-640x18/355-710x18 (275-620x17/330-700x17) | Debut = 2002 Fuji 500km | Races = 80 | Wins = 3 | Cons_champ = 0 | Drivers_champ = 0 | Poles = 1 | Fastest_laps = 1 | Last_season = [[2011 Super GT season|2011]] }}
The {{nihongo|'''Vemac RD320R'''|ヴィーマック・RD320R|Vuīmakku RD320R|lead=yes}} is a race car produced by the [[Vemac Car Company]] that raced in the Japanese [[Super GT]] GT300 class. It raced between 2002 and 2011<ref>{{cite web|url=https://www.racingsportscars.com/type/Vemac/RD320R.html|title=Vemac RD320R|website=Racingsportscars.com|access-date=13 November 2021}}</ref> and completed over 150 races in Japan alone.
==Specifications== When it was introduced in 2002, it used a [[Honda C engine|C32B]] V6 sourced from a [[Honda NSX]] tuned by [[Toda Racing]];<ref name=projectvemac>{{cite web |url=https://jalopnik.com/project-vemac-how-one-guy-is-resurrecting-an-obscure-j-1846862024 |title=This Guy Is Restoring An Obscure Japanese Race Car In His Home Garage With The Help Of Internet Car Weirdos |first=Adam |last=Ismail |website=[[Jalopnik]]|date=21 May 2021 |access-date=23 June 2023}}</ref> this engine would be bored and stroked to 3.4 L<ref>{{Cite web|url=http://supergt.net/archive/classic/supergt.net/supergt/2009/09team/index_j666.htm?tm|title = Avanzza Rosso|website=[[Super GT]]|access-date=23 June 2023}}</ref> similar to the NSXs running in GT500 at the time. The RD320R uses a [[Hewland]] 6-speed manual transmission actuated through a shift lever.
More powerful versions intended for GT500 competition, the [[Vemac RD350R|RD350R]] and [[Vemac RD408R|RD408R]], were developed in 2003 and 2004 respectively; these featured larger [[V8 engine]]s for increased power. These cars competed without success in GT500 but were somewhat competitive in the GT300 fields they were ultimately relegated to.
At least one road car, known as the '''RD320''', was built. It was given the registration plate of EX02 OME.<ref>{{Cite web|url=https://www.tr-d.co.jp/vemaccars/rd320/main.htm|title = RD320|website=[[Vemac Car Company]]|access-date=26 June 2023}}</ref>
==Racing record== The RD320R was first introduced by [[R&D Sport]] in 2002 at the Fuji 500 km, the second round of the season, replacing one of their [[Porsche 911 GT3]]s. The RD320R dominated the season, achieving a pole position and winning its debut race and scoring three wins in total, although it lost the championship to the [[Toyota MR2|Toyota MR-S]] of [[Autobacs Racing Team Aguri]] due to various balance of performance adjustments.<ref name=rd320r>{{cite web|url=http://f1-web-gallery.sakura.ne.jp/cn21/pg266.html|title=Formula Web Gallery: ＶＥＭＡＣ ＲＤ３２０Ｒ ＲＤ３５０Ｒ ＲＤ４０８Ｒ}}</ref> Other teams, notably Team [[Speed Racer|Mach]], Team LeyJun and [[Direxiv|Direxiv Motorsports]], a small team with [[Formula One]] aspirations, would also compete with the RD320R. Team Mach's RD320R was notable in that it used an engine sourced from a [[Porsche 911 GT3]] starting in 2009.<ref name=rd320r />
The last race for the RD320R was the Motegi GT race in 2011, with a sole RD320R driven by Team Mach; the team would replace their RD320R with a [[Ferrari 458|Ferrari 458 Italia GT3]]. After the Super GT rule changes in 2012 that prohibited low-volume production cars from entering races, the RD320R (and likewise all other Vemacs) is no longer able to race in the series. An ex-Avanzza Rosso car, chassis number SVCRD320R03H0005, was imported into the United States in 2018<ref name=md /> and is currently being restored by a private collector.<ref name=projectvemac />
==References== {{reflist}}
[[Category:Cars introduced in 2002]] [[Category:Rear mid-engine, rear-wheel-drive vehicles]] [[Category:Grand tourer racing cars]]