{"id":15,"date":"2022-01-01T13:14:48","date_gmt":"2022-01-01T13:14:48","guid":{"rendered":"https:\/\/martinjohnson2stroke.com\/?page_id=15"},"modified":"2023-07-16T20:18:53","modified_gmt":"2023-07-16T20:18:53","slug":"tuning","status":"publish","type":"page","link":"https:\/\/martinjohnson2stroke.com\/?page_id=15","title":{"rendered":"Engine Tuning"},"content":{"rendered":"\n<p>I can offer a tuning service for most two strokes. Sometimes the least expected engines make for the most interesting projects! Tuning spec can be to whatever spec you fancy, but usually it comes down to road or race. Generally I work on TZR and RD&#8217;s, but I enjoy anything two stroke! <\/p>\n\n\n\n<p>Price for a twin cylinder tune road \u00a3160 race \u00a3200 <\/p>\n\n\n\n<p>(sadly I can&#8217;t fit twin cylinder heads like the 2MA or LC\/YPVS on my lathe)<\/p>\n\n\n\n<p>Single cylinder base tune \u00a385<\/p>\n\n\n\n<p>Single cylinder head simple skim \u00a340 re-profiling \u00a380 (usually requires the whole engine for measuring purposes) <\/p>\n\n\n\n<p>Anything a bit different can be higher or lower depending on what&#8217;s involved, so the above prices are only a guide.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>This is an air-cooled RD250F, ported fairly modestly, a lot of work to open up the transfer ports and increase areas, but without going too far with the port heights. Along with a set of my custom pipes it made a healthy 40hp on a low reading dyno (same as a stock 2MA TZR)<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"541\" src=\"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/rdt9.jpg\" alt=\"\" class=\"wp-image-132\" srcset=\"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/rdt9.jpg 750w, https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/rdt9-300x216.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"726\" src=\"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/rdt5.jpg\" alt=\"\" class=\"wp-image-133\" srcset=\"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/rdt5.jpg 750w, https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/rdt5-300x290.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/chrisRDdyno-1024x768.jpg\" alt=\"\" class=\"wp-image-134\" srcset=\"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/chrisRDdyno-1024x768.jpg 1024w, https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/chrisRDdyno-300x225.jpg 300w, https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/chrisRDdyno-768x576.jpg 768w, https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/chrisRDdyno-1536x1152.jpg 1536w, https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/chrisRDdyno.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>These are my own TDR250 cylinders, with added extra sub exhaust ports. A lot of work! not something I generally offer as a service, but this spec did win the UK Formula 3 hovercraft championship many times.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"470\" src=\"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/tdr18.jpg\" alt=\"\" class=\"wp-image-135\" srcset=\"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/tdr18.jpg 700w, https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/tdr18-300x201.jpg 300w, https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/tdr18-272x182.jpg 272w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<p>These are a pair of RD350ypvs cylinders set up for a +4mm crankshaft. Apart from the usual flowing these needed the transfer port floors lowering to match the piston at BDC. <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"537\" src=\"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/lccyl.jpg\" alt=\"\" class=\"wp-image-136\" srcset=\"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/lccyl.jpg 800w, https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/lccyl-300x201.jpg 300w, https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/lccyl-768x516.jpg 768w, https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/lccyl-272x182.jpg 272w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>An AR80, ported cylinder with a TS100 head re-profiled to suit, and a race spec pipe. A fun project, and I was happy with the shape of the powercurve (14hp at 10-10500rpm). <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"503\" src=\"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/80porting1.jpg\" alt=\"\" class=\"wp-image-137\" srcset=\"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/80porting1.jpg 750w, https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/80porting1-300x201.jpg 300w, https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/80porting1-272x182.jpg 272w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"750\" height=\"454\" src=\"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/arseat8.jpg\" alt=\"\" class=\"wp-image-138\" srcset=\"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/arseat8.jpg 750w, https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/arseat8-300x182.jpg 300w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"480\" height=\"360\" src=\"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/ARdynocurve14hp.jpg\" alt=\"\" class=\"wp-image-139\" srcset=\"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/ARdynocurve14hp.jpg 480w, https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/ARdynocurve14hp-300x225.jpg 300w\" sizes=\"auto, (max-width: 480px) 100vw, 480px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>I can offer a tuning service for most two strokes. Sometimes the least expected engines make for the most interesting projects! Tuning spec can be to whatever spec you fancy, but usually it comes down to road or race. Generally I work on TZR and RD&#8217;s, but I enjoy anything two stroke! Price for a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-15","page","type-page","status-publish","hentry","post"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Engine Tuning - MartinJohnson2stroke.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/martinjohnson2stroke.com\/?page_id=15\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Engine Tuning - MartinJohnson2stroke.com\" \/>\n<meta property=\"og:description\" content=\"I can offer a tuning service for most two strokes. Sometimes the least expected engines make for the most interesting projects! Tuning spec can be to whatever spec you fancy, but usually it comes down to road or race. Generally I work on TZR and RD&#8217;s, but I enjoy anything two stroke! Price for a [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/martinjohnson2stroke.com\/?page_id=15\" \/>\n<meta property=\"og:site_name\" content=\"MartinJohnson2stroke.com\" \/>\n<meta property=\"article:modified_time\" content=\"2023-07-16T20:18:53+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/rdt9.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/martinjohnson2stroke.com\\\/?page_id=15\",\"url\":\"https:\\\/\\\/martinjohnson2stroke.com\\\/?page_id=15\",\"name\":\"Engine Tuning - MartinJohnson2stroke.com\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/martinjohnson2stroke.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/martinjohnson2stroke.com\\\/?page_id=15#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/martinjohnson2stroke.com\\\/?page_id=15#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/martinjohnson2stroke.com\\\/wp-content\\\/uploads\\\/2023\\\/07\\\/rdt9.jpg\",\"datePublished\":\"2022-01-01T13:14:48+00:00\",\"dateModified\":\"2023-07-16T20:18:53+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/martinjohnson2stroke.com\\\/?page_id=15#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/martinjohnson2stroke.com\\\/?page_id=15\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/martinjohnson2stroke.com\\\/?page_id=15#primaryimage\",\"url\":\"https:\\\/\\\/martinjohnson2stroke.com\\\/wp-content\\\/uploads\\\/2023\\\/07\\\/rdt9.jpg\",\"contentUrl\":\"https:\\\/\\\/martinjohnson2stroke.com\\\/wp-content\\\/uploads\\\/2023\\\/07\\\/rdt9.jpg\",\"width\":750,\"height\":541},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/martinjohnson2stroke.com\\\/?page_id=15#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/martinjohnson2stroke.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Engine Tuning\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/martinjohnson2stroke.com\\\/#website\",\"url\":\"https:\\\/\\\/martinjohnson2stroke.com\\\/\",\"name\":\"MartinJohnson2stroke.com\",\"description\":\"Custom 2 stroke exhausts and tuning\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/martinjohnson2stroke.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-GB\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Engine Tuning - MartinJohnson2stroke.com","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/martinjohnson2stroke.com\/?page_id=15","og_locale":"en_GB","og_type":"article","og_title":"Engine Tuning - MartinJohnson2stroke.com","og_description":"I can offer a tuning service for most two strokes. Sometimes the least expected engines make for the most interesting projects! Tuning spec can be to whatever spec you fancy, but usually it comes down to road or race. Generally I work on TZR and RD&#8217;s, but I enjoy anything two stroke! Price for a [&hellip;]","og_url":"https:\/\/martinjohnson2stroke.com\/?page_id=15","og_site_name":"MartinJohnson2stroke.com","article_modified_time":"2023-07-16T20:18:53+00:00","og_image":[{"url":"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/rdt9.jpg","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_misc":{"Estimated reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/martinjohnson2stroke.com\/?page_id=15","url":"https:\/\/martinjohnson2stroke.com\/?page_id=15","name":"Engine Tuning - MartinJohnson2stroke.com","isPartOf":{"@id":"https:\/\/martinjohnson2stroke.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/martinjohnson2stroke.com\/?page_id=15#primaryimage"},"image":{"@id":"https:\/\/martinjohnson2stroke.com\/?page_id=15#primaryimage"},"thumbnailUrl":"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/rdt9.jpg","datePublished":"2022-01-01T13:14:48+00:00","dateModified":"2023-07-16T20:18:53+00:00","breadcrumb":{"@id":"https:\/\/martinjohnson2stroke.com\/?page_id=15#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/martinjohnson2stroke.com\/?page_id=15"]}]},{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/martinjohnson2stroke.com\/?page_id=15#primaryimage","url":"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/rdt9.jpg","contentUrl":"https:\/\/martinjohnson2stroke.com\/wp-content\/uploads\/2023\/07\/rdt9.jpg","width":750,"height":541},{"@type":"BreadcrumbList","@id":"https:\/\/martinjohnson2stroke.com\/?page_id=15#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/martinjohnson2stroke.com\/"},{"@type":"ListItem","position":2,"name":"Engine Tuning"}]},{"@type":"WebSite","@id":"https:\/\/martinjohnson2stroke.com\/#website","url":"https:\/\/martinjohnson2stroke.com\/","name":"MartinJohnson2stroke.com","description":"Custom 2 stroke exhausts and tuning","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/martinjohnson2stroke.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-GB"}]}},"_links":{"self":[{"href":"https:\/\/martinjohnson2stroke.com\/index.php?rest_route=\/wp\/v2\/pages\/15","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/martinjohnson2stroke.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/martinjohnson2stroke.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/martinjohnson2stroke.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/martinjohnson2stroke.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=15"}],"version-history":[{"count":5,"href":"https:\/\/martinjohnson2stroke.com\/index.php?rest_route=\/wp\/v2\/pages\/15\/revisions"}],"predecessor-version":[{"id":152,"href":"https:\/\/martinjohnson2stroke.com\/index.php?rest_route=\/wp\/v2\/pages\/15\/revisions\/152"}],"wp:attachment":[{"href":"https:\/\/martinjohnson2stroke.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=15"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}