{"id":42860,"date":"2019-07-09T14:53:36","date_gmt":"2019-07-09T19:53:36","guid":{"rendered":"https:\/\/engineswapdepot.com\/?p=42860"},"modified":"2021-05-24T13:42:33","modified_gmt":"2021-05-24T18:42:33","slug":"subaru-ej251-swap-kit-for-mazda-miata-mx-5","status":"publish","type":"post","link":"https:\/\/engineswapdepot.com\/?p=42860","title":{"rendered":"Subaru EJ251 Swap Kit for Mazda Miata\/MX-5"},"content":{"rendered":"

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

Miata One is a company in Eagle, Idaho that makes a swap kit to install a naturally aspirated Subaru EJ251 flat-four into a Mazda Miata\/MX-5. The swap kit is made for 1989-1997 NA and 1999-2005 NB models using a Subaru EJ251 phase 2 block with an EJ251 phase 1 dual port heads and Subaru five-speed manual. The phase 1 heads are used to give the most amount of clearance between the frame rails. The swap is not a bolt-in process<\/strong> and requires the subframe and crossmember to be notched. The kit costs $925 and includes motor mount adapters, bracket to connect Subaru transmission to PPF (frame), shifter mount and isolator bushing, alternator mount and adjusting bracket, fasteners, and installation manual.
\nUpdate 7-12-2019<\/strong>: Website\/Company no longer active<\/p>\n

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

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

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

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

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

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

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

Source: Miata One (website no longer active) via Piotr<\/p>\n","protected":false},"excerpt":{"rendered":"

Miata One is a company in Eagle, Idaho that makes a swap kit to install a naturally aspirated Subaru EJ251 flat-four into a Mazda Miata\/MX-5. The swap kit is made for 1989-1997 NA and 1999-2005 NB models using a Subaru EJ251 phase 2 block with an EJ251 phase 1 dual port heads and Subaru five-speed… Read More »Subaru EJ251 Swap Kit for Mazda Miata\/MX-5<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":42864,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"off","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":[41,593],"tags":[],"class_list":["post-42860","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-miata","category-mx-5"],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2019\/07\/Subaru-EJ251-Swap-Kit-for-Mazda-Miata-MX-5-02.jpg?fit=1440%2C1920&ssl=1","jetpack-related-posts":[{"id":140274,"url":"https:\/\/engineswapdepot.com\/?p=140274","url_meta":{"origin":42860,"position":0},"title":"Geaux Moto’s ND Miata with a 2.3L EcoBoost","author":"swaptastic","date":"October 28, 2025","format":false,"excerpt":"Geaux Moto offers Miata performance parts and services at their company in Hammond, Louisiana. They used that experience to upgrade their Mazda Miata (ND) for racing at the track. In the engine bay they swapped a 2.3 L EcoBoost inline-four built by Mountune. The motor uses Focus RS camshafts, Mountune\u2026","rel":"","context":"In "Miata"","block_context":{"text":"Miata","link":"https:\/\/engineswapdepot.com\/?cat=41"},"img":{"alt_text":"Mazda Miata ND with a turbocharged 2.3L EcoBoost inline-four","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/10\/Mazda-Miata-ND-with-a-turbo-2.3L-EcoBoost-inline-four-01.jpg?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/10\/Mazda-Miata-ND-with-a-turbo-2.3L-EcoBoost-inline-four-01.jpg?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/10\/Mazda-Miata-ND-with-a-turbo-2.3L-EcoBoost-inline-four-01.jpg?fit=1200%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/10\/Mazda-Miata-ND-with-a-turbo-2.3L-EcoBoost-inline-four-01.jpg?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/10\/Mazda-Miata-ND-with-a-turbo-2.3L-EcoBoost-inline-four-01.jpg?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":128315,"url":"https:\/\/engineswapdepot.com\/?p=128315","url_meta":{"origin":42860,"position":1},"title":"Mazda MX-5 with a Jaguar AJ30 V6","author":"swaptastic","date":"February 26, 2025","format":false,"excerpt":"Hummelink-Modifications is a company in the Netherlands specializing in Mazda MX-5 engine and chassis parts. A customer approached Hummelink-Modifications to perform an engine swap on their Mazda MX-5 NB. The company replaced the 1.8 L BP inline-four with a 3.0 L Jaguar AJ30 V6 using a Rocketeer swap kit. The\u2026","rel":"","context":"In "Miata"","block_context":{"text":"Miata","link":"https:\/\/engineswapdepot.com\/?cat=41"},"img":{"alt_text":"Mazda MX-5 NB with a Jaguar AJ30 V6","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/02\/Mazda-MX-5-NB-with-a-Jaguar-AJ30-V6-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/02\/Mazda-MX-5-NB-with-a-Jaguar-AJ30-V6-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/02\/Mazda-MX-5-NB-with-a-Jaguar-AJ30-V6-01.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/02\/Mazda-MX-5-NB-with-a-Jaguar-AJ30-V6-01.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/02\/Mazda-MX-5-NB-with-a-Jaguar-AJ30-V6-01.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":144751,"url":"https:\/\/engineswapdepot.com\/?p=144751","url_meta":{"origin":42860,"position":2},"title":"Mazda Miata with a Honda K24","author":"swaptastic","date":"February 2, 2026","format":false,"excerpt":"Speed Academy built this Mazda Miata (NC) for the track. Under the hood is a 2.4 L Honda K24 inline-four using a KPower Industries swap kit and tubular front subframe. The motor features RDX 440 cc fuel injectors, K20 crank pulley, KPower intake manifold with a Bosch 74 mm DBW\u2026","rel":"","context":"In "Miata"","block_context":{"text":"Miata","link":"https:\/\/engineswapdepot.com\/?cat=41"},"img":{"alt_text":"NC Mazda Miata with a Honda K24 inline-four","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/02\/NC-Mazda-Miata-with-a-Honda-K24-01.jpg?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/02\/NC-Mazda-Miata-with-a-Honda-K24-01.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/02\/NC-Mazda-Miata-with-a-Honda-K24-01.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/02\/NC-Mazda-Miata-with-a-Honda-K24-01.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/02\/NC-Mazda-Miata-with-a-Honda-K24-01.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":139919,"url":"https:\/\/engineswapdepot.com\/?p=139919","url_meta":{"origin":42860,"position":3},"title":"Mazda Miata with a Turbo K24 and DCT","author":"swaptastic","date":"October 20, 2025","format":false,"excerpt":"Geaux Moto is a company in Hammond, Louisiana offering several services such as performance part installation, 3d scanning, CAD modeling, painted and bodywork, custom fabrication, and dyno tuning. If that was not enough, they also perform engine swaps. Today we share a Mazda Miata NC that benefited from their work.\u2026","rel":"","context":"In "Miata"","block_context":{"text":"Miata","link":"https:\/\/engineswapdepot.com\/?cat=41"},"img":{"alt_text":"Mazda Miata NC with a turbocharged Honda K24 and DCT","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/10\/Mazda-Miata-NC-with-a-turbocharged-Honda-K24-and-DCT-02.jpg?fit=1200%2C1200&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/10\/Mazda-Miata-NC-with-a-turbocharged-Honda-K24-and-DCT-02.jpg?fit=1200%2C1200&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/10\/Mazda-Miata-NC-with-a-turbocharged-Honda-K24-and-DCT-02.jpg?fit=1200%2C1200&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/10\/Mazda-Miata-NC-with-a-turbocharged-Honda-K24-and-DCT-02.jpg?fit=1200%2C1200&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/10\/Mazda-Miata-NC-with-a-turbocharged-Honda-K24-and-DCT-02.jpg?fit=1200%2C1200&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":117201,"url":"https:\/\/engineswapdepot.com\/?p=117201","url_meta":{"origin":42860,"position":4},"title":"Mazda Miata with a 800 hp Turbo K24","author":"swaptastic","date":"June 20, 2024","format":false,"excerpt":"Joshua Briggs from Briggs Motorsports has put a lot of time into building the ultimate Time Attack Mazda Miata. The car started racing with a turbocharged Mazda BP-series inline-four producing 500+ hp. The power proved too much for the motor, BMW ZF six-speed transmission, and rear differential. Joshua swapped to\u2026","rel":"","context":"In "Miata"","block_context":{"text":"Miata","link":"https:\/\/engineswapdepot.com\/?cat=41"},"img":{"alt_text":"Briggs Motorsports Mazda Miata with a Turbo Honda K24","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2024\/06\/Briggs-Motorsports-Mazda-Miata-with-a-Turbo-Honda-K24-01.jpg?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2024\/06\/Briggs-Motorsports-Mazda-Miata-with-a-Turbo-Honda-K24-01.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2024\/06\/Briggs-Motorsports-Mazda-Miata-with-a-Turbo-Honda-K24-01.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2024\/06\/Briggs-Motorsports-Mazda-Miata-with-a-Turbo-Honda-K24-01.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2024\/06\/Briggs-Motorsports-Mazda-Miata-with-a-Turbo-Honda-K24-01.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":143977,"url":"https:\/\/engineswapdepot.com\/?p=143977","url_meta":{"origin":42860,"position":5},"title":"Mazda Miata with a Turbo Honda K24","author":"swaptastic","date":"January 9, 2026","format":false,"excerpt":"Geaux Moto created several wild Miatas at their company in Louisiana. Take for example the Ecoboost-powerd NC Miata they built for track use. This time around we are sharing a 2009 Mazda Miata (NC) Geaux Moto built to compete in the GTC class of Optima Ultimate Street Car Challenge. In\u2026","rel":"","context":"In "Miata"","block_context":{"text":"Miata","link":"https:\/\/engineswapdepot.com\/?cat=41"},"img":{"alt_text":"Mazda Miata with a turbocharged Honda K24 inline-four","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/01\/Mazda-Miata-with-a-turbocharged-Honda-K24-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/01\/Mazda-Miata-with-a-turbocharged-Honda-K24-01.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/01\/Mazda-Miata-with-a-turbocharged-Honda-K24-01.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/01\/Mazda-Miata-with-a-turbocharged-Honda-K24-01.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2026\/01\/Mazda-Miata-with-a-turbocharged-Honda-K24-01.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts\/42860","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=42860"}],"version-history":[{"count":9,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts\/42860\/revisions"}],"predecessor-version":[{"id":72265,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts\/42860\/revisions\/72265"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/media\/42864"}],"wp:attachment":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=42860"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=42860"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=42860"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}