{"id":17747,"date":"2017-08-24T06:15:55","date_gmt":"2017-08-24T11:15:55","guid":{"rendered":"https:\/\/engineswapdepot.com\/?p=17747"},"modified":"2017-08-24T00:32:21","modified_gmt":"2017-08-24T05:32:21","slug":"porsche-993-with-a-4-0-l-flat-six","status":"publish","type":"post","link":"https:\/\/engineswapdepot.com\/?p=17747","title":{"rendered":"Porsche 993 with a 4.0 L Flat-Six"},"content":{"rendered":"

\"Porsche<\/a><\/p>\n

Gunther Werks<\/a> set out to build the ultimate Porsche 993 they call the “400R” concept. The basis for the project was what would a GT3 RS version of the 993 be if Porsche had built one. The production run will be limited to 25 at a cost of $525,000.<\/p>\n

\"Porsche<\/a><\/p>\n

\"Porsche<\/a><\/p>\n

\"Porsche<\/a><\/p>\n

\"Porsche<\/a><\/p>\n

Gunther Werks stayed with the air-cooled flat-six as the foundation for the power plant. However their version is 4.0 liters and was built by Rothsport Racing<\/a> in Sherwood, Oregon. The engine uses forged internals, coil-on-plug ignition, twin spark plugs, and MoTeC ECU. This combo is good for 400+ horsepower, 330 lb-ft of torque, and 7800 rpm redline.<\/p>\n

\"Porsche<\/a><\/p>\n

\"Porsche<\/a><\/p>\n

Behind the high revving engine is a single mass mid-weight flywheel and upgraded single-plate clutch connected to a custom built Getrag G50 six-speed transaxle. Inside the transmission find custom ratio gears and differential with carbon clutches. This combination is supposed to give the the best of track and street driving.<\/p>\n

\"Porsche<\/a><\/p>\n

\"Porsche<\/a><\/p>\n

Gunther Werks upgraded the 993’s suspension with RS Spec EVO uprights, KW Clubsport coilovers and upgraded bushings, drop links, and anti-roll bars front and rear. They also included a KW hydraulic lift system to make sure you don’t scrape the front of the car over any speed bumps. <\/p>\n

\"Porsche<\/a><\/p>\n

Behind the custom aluminum wheels are Brembo disc brakes used on the Nissan R35 GTR. They comprise of two-piece slotted rotors with six-piston calipers in front and four-piston calipers in the rear. <\/p>\n

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\"Porsche<\/a><\/p>\n

\"Porsche<\/a><\/p>\n

Performance was further improved using carbon fiber wherever they could. Every body panel was replaced with carbon fiber except the doors and mirrors. They also included carbon fiber on the floors, trunk liner, and racing seats. <\/p>\n

\"Porsche<\/a><\/p>\n

\"Porsche<\/a><\/p>\n

\"Porsche<\/a><\/p>\n

\"Porsche<\/a><\/p>\n

\"Porsche<\/a><\/p>\n

\"Porsche<\/a><\/p>\n

\"Porsche<\/a><\/p>\n

Source: Gunther Werks<\/a> (project page) and Gunther Werks FB page<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Gunther Werks set out to build the ultimate Porsche 993 they call the “400R” concept. The basis for the project was what would a GT3 RS version of the 993 be if Porsche had built one. The production run will be limited to 25 at a cost of $525,000. Gunther Werks stayed with the air-cooled… Read More »Porsche 993 with a 4.0 L Flat-Six<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":17748,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[669],"tags":[],"class_list":["post-17747","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-669"],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2017\/08\/Porsche-993-400R-with-a-4.0-L-Flat-Six-01.jpg?fit=1600%2C999&ssl=1","jetpack-related-posts":[{"id":113484,"url":"https:\/\/engineswapdepot.com\/?p=113484","url_meta":{"origin":17747,"position":0},"title":"1971 Porsche 914-6 with a 993 Flat-Six","author":"swaptastic","date":"March 28, 2024","format":false,"excerpt":"This 1971 Porsche 914-6 arrived at Patrick Motorsports with a 2.0 L flat-six and 901 five-speed manual transaxle. The company was tasked with rebuilding the car with more power. In the back they swapped a 3.6 L DME flat-six from a Porsche 993. Due the increased power they could not\u2026","rel":"","context":"In "914"","block_context":{"text":"914","link":"https:\/\/engineswapdepot.com\/?cat=299"},"img":{"alt_text":"1971 Porsche 914-6 with a 993 Flat-Six","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2024\/03\/1971-Porsche-914-6-with-a-993-Flat-Six-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2024\/03\/1971-Porsche-914-6-with-a-993-Flat-Six-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2024\/03\/1971-Porsche-914-6-with-a-993-Flat-Six-01.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2024\/03\/1971-Porsche-914-6-with-a-993-Flat-Six-01.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2024\/03\/1971-Porsche-914-6-with-a-993-Flat-Six-01.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":130478,"url":"https:\/\/engineswapdepot.com\/?p=130478","url_meta":{"origin":17747,"position":1},"title":"Porsche 964 with a Twin-Turbo 993 Motor","author":"swaptastic","date":"April 15, 2025","format":false,"excerpt":"Torwesten Racing owns and races a special Porsche 911. NM2255 reports the car started life as a 1989 Porsche 964 RSR and now is powered by twin-turbo 3.6 L flat-six from a Porsche 993 GT2 EVO. The motor produces 540 hp (397 kW) and 660 Nm (486 lb-ft) of torque\u2026","rel":"","context":"In "964"","block_context":{"text":"964","link":"https:\/\/engineswapdepot.com\/?cat=693"},"img":{"alt_text":"Porsche 964 race car with a twin-turbo 993 flat-six","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/04\/Porsche-964-race-car-with-a-twin-turbo-993-flat-six-01.jpg?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/04\/Porsche-964-race-car-with-a-twin-turbo-993-flat-six-01.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/04\/Porsche-964-race-car-with-a-twin-turbo-993-flat-six-01.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/04\/Porsche-964-race-car-with-a-twin-turbo-993-flat-six-01.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/04\/Porsche-964-race-car-with-a-twin-turbo-993-flat-six-01.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":144714,"url":"https:\/\/engineswapdepot.com\/?p=144714","url_meta":{"origin":17747,"position":2},"title":"Porsche 964 with a Twin-Turbo 993 Motor Racing N\u00fcrburgring’s GP Strecke","author":"swaptastic","date":"January 30, 2026","format":false,"excerpt":"Mike Torwesten from Torwesten Racing and their Porsche 935 race car attended the N\u00fcrburgring 24 Hours for the Touring Car Legends on the GP Strecke circuit layout. Mike retired from Race 1 requiring him start in 38th place in Race 2. Mike finished with the class win and overall win.\u2026","rel":"","context":"In "964"","block_context":{"text":"964","link":"https:\/\/engineswapdepot.com\/?cat=693"},"img":{"alt_text":"Porsche 964 race car with a twin-turbo 993 flat-six","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/01\/Porsche-964-race-car-with-a-twin-turbo-993-flat-six-12.jpg?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/01\/Porsche-964-race-car-with-a-twin-turbo-993-flat-six-12.jpg?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/01\/Porsche-964-race-car-with-a-twin-turbo-993-flat-six-12.jpg?fit=1200%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/01\/Porsche-964-race-car-with-a-twin-turbo-993-flat-six-12.jpg?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/01\/Porsche-964-race-car-with-a-twin-turbo-993-flat-six-12.jpg?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":138606,"url":"https:\/\/engineswapdepot.com\/?p=138606","url_meta":{"origin":17747,"position":3},"title":"Porsche 964 with a Twin-Turbo 993 Motor","author":"swaptastic","date":"September 24, 2025","format":false,"excerpt":"Mike Torwesten from Torwesten Racing and his Porsche 935 race car visited TT Circuit Assen in Assen, Drenthe, Netherlands. Mike finished first but contact with another car resulted in a penalty and 2nd place. The 935 started as a 1989 Porsche 964 RSR now powered by a twin-turbo 3.6 L\u2026","rel":"","context":"In "964"","block_context":{"text":"964","link":"https:\/\/engineswapdepot.com\/?cat=693"},"img":{"alt_text":"Porsche 964 race car with a twin-turbo 993 flat-six","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/09\/Porsche-964-race-car-with-a-twin-turbo-993-flat-six-09.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/09\/Porsche-964-race-car-with-a-twin-turbo-993-flat-six-09.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/09\/Porsche-964-race-car-with-a-twin-turbo-993-flat-six-09.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/09\/Porsche-964-race-car-with-a-twin-turbo-993-flat-six-09.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/09\/Porsche-964-race-car-with-a-twin-turbo-993-flat-six-09.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":49387,"url":"https:\/\/engineswapdepot.com\/?p=49387","url_meta":{"origin":17747,"position":4},"title":"For Sale: Porsche 993 Race Car with a 3.8 L Flat-Six","author":"swaptastic","date":"November 29, 2019","format":false,"excerpt":"This Porsche 993 race car is for sale at Patrick Motorsports in Phoenix, Arizona. The project started with a 1995 Porsche 993 Cabriolet which suffered an interior fire. The company stripped it down to the shell, installed a 993 GT2 fiberglass body kit, and coated it in Porsche 1993-94 Maritime\u2026","rel":"","context":"In "993"","block_context":{"text":"993","link":"https:\/\/engineswapdepot.com\/?cat=669"},"img":{"alt_text":"Porsche 993 Race Car with a 3.8 L Flat-Six","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2019\/11\/Porsche-993-Race-Car-with-a-3.8-L-Flat-Six-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2019\/11\/Porsche-993-Race-Car-with-a-3.8-L-Flat-Six-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2019\/11\/Porsche-993-Race-Car-with-a-3.8-L-Flat-Six-01.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2019\/11\/Porsche-993-Race-Car-with-a-3.8-L-Flat-Six-01.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2019\/11\/Porsche-993-Race-Car-with-a-3.8-L-Flat-Six-01.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":170,"url":"https:\/\/engineswapdepot.com\/?p=170","url_meta":{"origin":17747,"position":5},"title":"Karmann Ghia with a Porsche 993 Engine","author":"swaptastic","date":"July 24, 2008","format":false,"excerpt":"While doing research I came across an old Jalopnik article about Bader Racing putting a Porsche 993 engine in a VW Karmann Ghia. The engine has a few upgrades giving the car around 321 horsepower. To handle the extra power, they stiffened the chassis with a roll cage. Jalopnik reports\u2026","rel":"","context":"In "Karmann Ghia"","block_context":{"text":"Karmann Ghia","link":"https:\/\/engineswapdepot.com\/?cat=477"},"img":{"alt_text":"Karmann Ghia with a Porsche 993 flat-six","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2008\/07\/Karmann-Ghia-with-a-Porsche-993-Engine-01.jpg?fit=800%2C528&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2008\/07\/Karmann-Ghia-with-a-Porsche-993-Engine-01.jpg?fit=800%2C528&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2008\/07\/Karmann-Ghia-with-a-Porsche-993-Engine-01.jpg?fit=800%2C528&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2008\/07\/Karmann-Ghia-with-a-Porsche-993-Engine-01.jpg?fit=800%2C528&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts\/17747","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=17747"}],"version-history":[{"count":0,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts\/17747\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/media\/17748"}],"wp:attachment":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17747"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17747"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17747"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}