{"id":208,"date":"2025-10-01T19:57:10","date_gmt":"2025-10-01T19:57:10","guid":{"rendered":"https:\/\/1stgencivic.ca\/?p=208"},"modified":"2026-07-28T20:17:29","modified_gmt":"2026-07-28T20:17:29","slug":"photos-custom-exhaust","status":"publish","type":"post","link":"https:\/\/1stgencivic.ca\/?p=208","title":{"rendered":"Photo&#8217;s Custom Exhaust"},"content":{"rendered":"<p>Building a custom exhaust for a 1978 Honda Civic (first-generation 1200) requires a custom-fabricated or universal-adaptable setup, sizing piping to 1.75 or 2 inches, and selecting a vintage-appropriate turbo or glasspack muffler. Because direct bolt-on aftermarket kits do not exist for first-gen Civics, fabrication by an exhaust shop or DIY welding is required.\n<br><br>\nKey Fabrication SpecsPiping Diameter: 1.75-inch to 2.0-inch outer diameter is ideal to maintain proper backpressure and low-end torque for the small displacement 1.2L or 1.5L CVCC four-cylinder engine. Going larger (like 2.5 inches) will hurt performance and sound overly raspy.\n<br><br>\nRouting: Single-exit rear setup mirroring the factory passenger-side or driver-side exit, carefully routed over the compact rear beam axle. Component Selection Header \/ Manifold: Rare vintage aftermarket headers (such as old-school Douglas or Pacesetter units if found used) or modifying the stock exhaust manifold flange. \n<br><br>\nResonator: A small 12-to-18-inch glasspack or straight-through resonator is necessary to eliminate the aggressive metallic drone typical of CVCC engines. \n<br><br>\nMuffler: Compact universal retro mufflers (like a MagnaFlow straight-through or turbo-style oval muffler) to keep the tone deep rather than buzzy.\n<br>\n<\/p>\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped nfd-wb-animate nfd-wb-fade-in-bottom wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"1207\" src=\"https:\/\/1stgencivic.ca\/wp-content\/uploads\/2026\/07\/acm-300x225.jpg\" alt=\"\" class=\"wp-image-1207\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"1206\" src=\"https:\/\/1stgencivic.ca\/wp-content\/uploads\/2026\/07\/acl-300x225.jpg\" alt=\"\" class=\"wp-image-1206\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"1205\" src=\"https:\/\/1stgencivic.ca\/wp-content\/uploads\/2026\/07\/acd-300x225.jpg\" alt=\"\" class=\"wp-image-1205\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"1204\" src=\"https:\/\/1stgencivic.ca\/wp-content\/uploads\/2026\/07\/ace-300x225.jpg\" alt=\"\" class=\"wp-image-1204\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"1203\" src=\"https:\/\/1stgencivic.ca\/wp-content\/uploads\/2026\/07\/acf-300x225.jpg\" alt=\"\" class=\"wp-image-1203\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"1202\" src=\"https:\/\/1stgencivic.ca\/wp-content\/uploads\/2026\/07\/acg-300x225.jpg\" alt=\"\" class=\"wp-image-1202\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"1201\" src=\"https:\/\/1stgencivic.ca\/wp-content\/uploads\/2026\/07\/ach-300x225.jpg\" alt=\"\" class=\"wp-image-1201\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"1200\" src=\"https:\/\/1stgencivic.ca\/wp-content\/uploads\/2026\/07\/aci_sized-300x225.jpg\" alt=\"\" class=\"wp-image-1200\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"1199\" src=\"https:\/\/1stgencivic.ca\/wp-content\/uploads\/2026\/07\/acj-300x225.jpg\" alt=\"\" class=\"wp-image-1199\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"1198\" src=\"https:\/\/1stgencivic.ca\/wp-content\/uploads\/2026\/07\/adp-300x225.jpg\" alt=\"\" class=\"wp-image-1198\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"1197\" src=\"https:\/\/1stgencivic.ca\/wp-content\/uploads\/2026\/07\/ads-300x225.jpg\" alt=\"\" class=\"wp-image-1197\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"1196\" src=\"https:\/\/1stgencivic.ca\/wp-content\/uploads\/2026\/07\/adq-300x225.jpg\" alt=\"\" class=\"wp-image-1196\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"1195\" src=\"https:\/\/1stgencivic.ca\/wp-content\/uploads\/2026\/07\/Magna_Flow_Muffler-300x225.jpg\" alt=\"\" class=\"wp-image-1195\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"1194\" src=\"https:\/\/1stgencivic.ca\/wp-content\/uploads\/2026\/07\/randy_d47_rest-150x150.jpg\" alt=\"\" class=\"wp-image-1194\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"1193\" src=\"https:\/\/1stgencivic.ca\/wp-content\/uploads\/2026\/07\/RS_Civic_Header-300x225.jpg\" alt=\"\" class=\"wp-image-1193\"\/><\/figure>\n<\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Building a custom exhaust for a 1978 Honda Civic (first-generation 1200) requires a custom-fabricated or universal-adaptable setup, sizing piping to 1.75 or 2 inches, and selecting a vintage-appropriate turbo or glasspack muffler. Because direct bolt-on aftermarket kits do not exist for first-gen Civics, fabrication by an exhaust shop or DIY welding is required. Key Fabrication [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":220,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28,10],"tags":[38,37,36],"class_list":["post-208","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-increase-power","category-photos","tag-custom","tag-exhaust","tag-photo"],"_links":{"self":[{"href":"https:\/\/1stgencivic.ca\/index.php?rest_route=\/wp\/v2\/posts\/208","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/1stgencivic.ca\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/1stgencivic.ca\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/1stgencivic.ca\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/1stgencivic.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=208"}],"version-history":[{"count":5,"href":"https:\/\/1stgencivic.ca\/index.php?rest_route=\/wp\/v2\/posts\/208\/revisions"}],"predecessor-version":[{"id":231,"href":"https:\/\/1stgencivic.ca\/index.php?rest_route=\/wp\/v2\/posts\/208\/revisions\/231"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/1stgencivic.ca\/index.php?rest_route=\/wp\/v2\/media\/220"}],"wp:attachment":[{"href":"https:\/\/1stgencivic.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=208"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/1stgencivic.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=208"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/1stgencivic.ca\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=208"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}