{"id":104146,"date":"2023-08-23T06:00:09","date_gmt":"2023-08-23T11:00:09","guid":{"rendered":"https:\/\/engineswapdepot.com\/?p=104146"},"modified":"2023-08-22T21:00:37","modified_gmt":"2023-08-23T02:00:37","slug":"4piston-racings-2-5-l-usac-race-motor","status":"publish","type":"post","link":"https:\/\/engineswapdepot.com\/?p=104146","title":{"rendered":"4Piston Racing&#8217;s 2.5 L USAC Race Motor"},"content":{"rendered":"<p><a href=\"https:\/\/engineswapdepot.com\/?attachment_id=104154\" rel=\"attachment wp-att-104154\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"104154\" data-permalink=\"https:\/\/engineswapdepot.com\/?attachment_id=104154\" data-orig-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-01.jpg?fit=1024%2C877&amp;ssl=1\" data-orig-size=\"1024,877\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"4Piston Racing&amp;#8217;s 2.5 L K-series race motor 01\" data-image-description=\"&lt;p&gt;4Piston Racing&amp;#8217;s 2.5 L K-series race motor&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-01.jpg?fit=1024%2C877&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-01.jpg?resize=600%2C514&#038;ssl=1\" alt=\"4Piston Racing&#039;s 2.5 L K-series race motor\" width=\"600\" height=\"514\" class=\"alignnone size-medium wp-image-104154\" srcset=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-01.jpg?resize=600%2C514&amp;ssl=1 600w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-01.jpg?resize=768%2C658&amp;ssl=1 768w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-01.jpg?w=1024&amp;ssl=1 1024w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p>Greg Jones from <a href=\"https:\/\/www.youtube.com\/@EngineBuilder\">Engine Builder<\/a> visited <a href=\"https:\/\/4pistonracing.com\">4Piston Racing<\/a> in Danville, Indiana to talk with co-owner Luke Wilson about their <a href=\"https:\/\/4pistonracing.com\/collections\/midget\/products\/4p-k24usac\">USAC Midget race engine<\/a>. The naturally aspirated 2.52 L motor features a 99 mm stroke, 90 mm bore, and produces around 400 hp with a 15:1 compression ratio. It uses a ductile iron sleeved CR-V block with a stock CR-V crankshaft, Wiseco DLC-coated pistons, Saenz rods, dry sump oil system, Kinsler mechanical fuel injection, and EFI R1i ignition system. <\/p>\n<p><iframe loading=\"lazy\" width=\"600\" height=\"338\" src=\"https:\/\/www.youtube-nocookie.com\/embed\/lqLiwske9lo\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe><\/p>\n<p><a href=\"https:\/\/engineswapdepot.com\/?attachment_id=104155\" rel=\"attachment wp-att-104155\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"104155\" data-permalink=\"https:\/\/engineswapdepot.com\/?attachment_id=104155\" data-orig-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-02.jpg?fit=768%2C1024&amp;ssl=1\" data-orig-size=\"768,1024\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"4Piston Racing&amp;#8217;s 2.5 L K-series race motor 02\" data-image-description=\"&lt;p&gt;4Piston Racing&amp;#8217;s 2.5 L K-series race motor&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-02.jpg?fit=768%2C1024&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-02-600x800.jpg?resize=600%2C800&#038;ssl=1\" alt=\"4Piston Racing&#039;s 2.5 L K-series race motor\" width=\"600\" height=\"800\" class=\"alignnone size-medium wp-image-104155\" srcset=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-02.jpg?resize=600%2C800&amp;ssl=1 600w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-02.jpg?w=768&amp;ssl=1 768w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/engineswapdepot.com\/?attachment_id=104156\" rel=\"attachment wp-att-104156\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"104156\" data-permalink=\"https:\/\/engineswapdepot.com\/?attachment_id=104156\" data-orig-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-03.jpg?fit=768%2C1024&amp;ssl=1\" data-orig-size=\"768,1024\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"4Piston Racing&amp;#8217;s 2.5 L K-series race motor 03\" data-image-description=\"&lt;p&gt;4Piston Racing&amp;#8217;s 2.5 L K-series race motor&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-03.jpg?fit=768%2C1024&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-03-600x800.jpg?resize=600%2C800&#038;ssl=1\" alt=\"4Piston Racing&#039;s 2.5 L K-series race motor\" width=\"600\" height=\"800\" class=\"alignnone size-medium wp-image-104156\" srcset=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-03.jpg?resize=600%2C800&amp;ssl=1 600w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-03.jpg?w=768&amp;ssl=1 768w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/engineswapdepot.com\/?attachment_id=104157\" rel=\"attachment wp-att-104157\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"104157\" data-permalink=\"https:\/\/engineswapdepot.com\/?attachment_id=104157\" data-orig-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-04.jpg?fit=1024%2C768&amp;ssl=1\" data-orig-size=\"1024,768\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"4Piston Racing&amp;#8217;s 2.5 L K-series race motor 04\" data-image-description=\"&lt;p&gt;4Piston Racing&amp;#8217;s 2.5 L K-series race motor&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-04.jpg?fit=1024%2C768&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-04-600x450.jpg?resize=600%2C450&#038;ssl=1\" alt=\"4Piston Racing&#039;s 2.5 L K-series race motor\" width=\"600\" height=\"450\" class=\"alignnone size-medium wp-image-104157\" srcset=\"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-04.jpg?resize=600%2C450&amp;ssl=1 600w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-04.jpg?resize=768%2C576&amp;ssl=1 768w, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-04.jpg?w=1024&amp;ssl=1 1024w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p>Source: <a href=\"https:\/\/4pistonracing.com\">4Piston Racing<\/a> and <a href=\"https:\/\/www.youtube.com\/@EngineBuilder\">Engine Builder<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Greg Jones from Engine Builder visited 4Piston Racing in Danville, Indiana to talk with co-owner Luke Wilson about their USAC Midget race engine. The naturally aspirated 2.52 L motor features a 99 mm stroke, 90 mm bore, and produces around 400 hp with a 15:1 compression ratio. It uses a ductile iron sleeved CR-V block&hellip;&nbsp;<a href=\"https:\/\/engineswapdepot.com\/?p=104146\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">4Piston Racing&#8217;s 2.5 L USAC Race Motor<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":104154,"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":100,"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":[594,865],"tags":[],"class_list":["post-104146","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-k-series","category-k24"],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/08\/4Piston-Racings-2.5-L-K-series-race-motor-01.jpg?fit=1024%2C877&ssl=1","jetpack-related-posts":[{"id":138854,"url":"https:\/\/engineswapdepot.com\/?p=138854","url_meta":{"origin":104146,"position":0},"title":"Tegiwa&#8217;s Toyota GT86 with a 4Piston K24","author":"swaptastic","date":"September 30, 2025","format":false,"excerpt":"Tegiwa purchased a JDM-spec Toyota GT86 with 300,000 km (186,411 miles) on the odometer. The company used their experience in racing and Honda performance to rebuild the coupe for rally. In the engine bay Tegiwa replaced the tired factory 2.0 L FA20 flat-four for a 2.5 L Honda K24 inline-four\u2026","rel":"","context":"In &quot;86&quot;","block_context":{"text":"86","link":"https:\/\/engineswapdepot.com\/?cat=129"},"img":{"alt_text":"Toyota GT86 with a 4Piston K24 inline-four","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/09\/Tegiwa-Toyota-GT86-with-a-4Piston-K24-inline-four-01.jpg?fit=1080%2C1080&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/09\/Tegiwa-Toyota-GT86-with-a-4Piston-K24-inline-four-01.jpg?fit=1080%2C1080&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/09\/Tegiwa-Toyota-GT86-with-a-4Piston-K24-inline-four-01.jpg?fit=1080%2C1080&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/09\/Tegiwa-Toyota-GT86-with-a-4Piston-K24-inline-four-01.jpg?fit=1080%2C1080&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/09\/Tegiwa-Toyota-GT86-with-a-4Piston-K24-inline-four-01.jpg?fit=1080%2C1080&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":119184,"url":"https:\/\/engineswapdepot.com\/?p=119184","url_meta":{"origin":104146,"position":1},"title":"4Piston Racing Builds a Honda K24 for Endurance Racing","author":"swaptastic","date":"August 8, 2024","format":false,"excerpt":"4Piston Racing built an upgraded version of their K24-K400 motor for a customer competing in 3-hour and 6-hour endurance racing. The engine build starts with a ductile iron sleeved block, lightweight Winberg crankshaft, Saenz Performance titanium rods, and lightweight short-skirt Wiseco pistons. On top goes a ported \"Pro 163\" 400\u2026","rel":"","context":"In &quot;K24&quot;","block_context":{"text":"K24","link":"https:\/\/engineswapdepot.com\/?cat=865"},"img":{"alt_text":"K24 endurance motor built by 4Piston Racing","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2024\/08\/4Piston-Racing-K24-endurance-motor-01.jpg?fit=1200%2C756&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2024\/08\/4Piston-Racing-K24-endurance-motor-01.jpg?fit=1200%2C756&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2024\/08\/4Piston-Racing-K24-endurance-motor-01.jpg?fit=1200%2C756&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2024\/08\/4Piston-Racing-K24-endurance-motor-01.jpg?fit=1200%2C756&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2024\/08\/4Piston-Racing-K24-endurance-motor-01.jpg?fit=1200%2C756&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":130099,"url":"https:\/\/engineswapdepot.com\/?p=130099","url_meta":{"origin":104146,"position":2},"title":"1200+ hp Honda K24 Build Video","author":"swaptastic","date":"April 7, 2025","format":false,"excerpt":"4Piston Racing offers their K24-KT1200 crate motor for SFWD and Outlaw Class competitors. The motor is capable of 1200+ hp (894+ kW) with 60 psi (4.1 bar) of boost. It features a 4Piston rigid ductile iron sleeves, GRP rods, Diamond Outlaw pistons, and ACL race bearings. On top is a\u2026","rel":"","context":"In &quot;K24&quot;","block_context":{"text":"K24","link":"https:\/\/engineswapdepot.com\/?cat=865"},"img":{"alt_text":"4Piston Racing Honda K24-KT1200 crate motor","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/04\/4Piston-Racing-Honda-K24-KT1200-motor-build-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\/4Piston-Racing-Honda-K24-KT1200-motor-build-01.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/04\/4Piston-Racing-Honda-K24-KT1200-motor-build-01.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/04\/4Piston-Racing-Honda-K24-KT1200-motor-build-01.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/04\/4Piston-Racing-Honda-K24-KT1200-motor-build-01.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":78953,"url":"https:\/\/engineswapdepot.com\/?p=78953","url_meta":{"origin":104146,"position":3},"title":"Toyota MR2 with a 2.5 L Honda K24","author":"swaptastic","date":"November 9, 2021","format":false,"excerpt":"Eric Hux from Hux Racing owns a unique 1993 Toyota MR2. The car was powered by a 2.4 L K20\/K24 inline-four sitting on Hux Racing's mounts. The motor made 286 hp and 206 lb-ft of torque. Earlier this year Eric upgraded to a 4Piston K24-K400 inline-four. The new 2.5 L\u2026","rel":"","context":"In &quot;MR2&quot;","block_context":{"text":"MR2","link":"https:\/\/engineswapdepot.com\/?cat=139"},"img":{"alt_text":"Toyota MR2 built by Hux Racing with a 2.5 L K24 inline-four","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2021\/11\/Hux-Racing-Toyota-MR2-with-a-2.5-L-K24-inline-four-01.jpg?fit=1200%2C900&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2021\/11\/Hux-Racing-Toyota-MR2-with-a-2.5-L-K24-inline-four-01.jpg?fit=1200%2C900&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2021\/11\/Hux-Racing-Toyota-MR2-with-a-2.5-L-K24-inline-four-01.jpg?fit=1200%2C900&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2021\/11\/Hux-Racing-Toyota-MR2-with-a-2.5-L-K24-inline-four-01.jpg?fit=1200%2C900&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2021\/11\/Hux-Racing-Toyota-MR2-with-a-2.5-L-K24-inline-four-01.jpg?fit=1200%2C900&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":108657,"url":"https:\/\/engineswapdepot.com\/?p=108657","url_meta":{"origin":104146,"position":4},"title":"Katech Billet 2.7 L Inline-Four","author":"swaptastic","date":"December 11, 2023","format":false,"excerpt":"Katech unveiled their new 2.7 L (165 ci) inline-four at PRI 2023 for use in USAC Racing, Xtreme Outlaw Series, and POWRi National Midget League. The motor features a custom LTx-based billet block using a 4.125-inch (105 mm) bore and 3.085-inch (78 mm) stroke. Inside are CP-Carillo rods and pistons,\u2026","rel":"","context":"In &quot;Katech 2.7 I4&quot;","block_context":{"text":"Katech 2.7 I4","link":"https:\/\/engineswapdepot.com\/?cat=1227"},"img":{"alt_text":"Katech billet 2.7 L inline-four","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/12\/Katech-billet-2.7-L-inline-four-02.jpg?fit=1200%2C905&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/12\/Katech-billet-2.7-L-inline-four-02.jpg?fit=1200%2C905&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/12\/Katech-billet-2.7-L-inline-four-02.jpg?fit=1200%2C905&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/12\/Katech-billet-2.7-L-inline-four-02.jpg?fit=1200%2C905&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2023\/12\/Katech-billet-2.7-L-inline-four-02.jpg?fit=1200%2C905&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":135086,"url":"https:\/\/engineswapdepot.com\/?p=135086","url_meta":{"origin":104146,"position":5},"title":"Lotus Elise with a 4Piston Racing K24 at Sonoma Raceway","author":"swaptastic","date":"July 24, 2025","format":false,"excerpt":"Julien Plougastel and his 2005 Lotus Elise visited Sonoma Raceway for some track time. The sports car is powered by a 2.4 L Honda K24 inline-four swapped by a TrackSpec Autosports in California. 4Piston Racing built the motor with 13.5:1 compression pistons, ported TSX head, RR4 camshafts, and upgraded Ferrea\u2026","rel":"","context":"In &quot;Elise&quot;","block_context":{"text":"Elise","link":"https:\/\/engineswapdepot.com\/?cat=260"},"img":{"alt_text":"2005 Lotus Elise with a Honda K24 inline-four","src":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/07\/2005-Lotus-Elise-with-a-Honda-K24-inline-four-08.jpg?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/07\/2005-Lotus-Elise-with-a-Honda-K24-inline-four-08.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/07\/2005-Lotus-Elise-with-a-Honda-K24-inline-four-08.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/07\/2005-Lotus-Elise-with-a-Honda-K24-inline-four-08.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/engineswapdepot.com\/wp-content\/uploads\/2025\/07\/2005-Lotus-Elise-with-a-Honda-K24-inline-four-08.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts\/104146","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=104146"}],"version-history":[{"count":8,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts\/104146\/revisions"}],"predecessor-version":[{"id":104158,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/posts\/104146\/revisions\/104158"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=\/wp\/v2\/media\/104154"}],"wp:attachment":[{"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=104146"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=104146"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineswapdepot.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=104146"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}