{"id":23,"date":"2016-12-29T06:09:11","date_gmt":"2016-12-29T06:09:11","guid":{"rendered":"http:\/\/gtconcepts.ca\/main\/?p=23"},"modified":"2016-12-30T22:36:04","modified_gmt":"2016-12-30T22:36:04","slug":"tech-talk-spark-plug-heat-ranges","status":"publish","type":"post","link":"http:\/\/gtconcepts.ca\/main\/tech-talk-spark-plug-heat-ranges\/","title":{"rendered":"Tech Talk \u00a0&#8211; Spark Plug Heat Ranges"},"content":{"rendered":"<p>A spark plug has one major job in life, to ignite the air &amp; fuel mixture in a gasoline engine.<\/p>\n<p>It&#8217;s pretty simple, but why are there so many spark plugs options for the same engine? One major component is called &#8220;Heat Range&#8221;<\/p>\n<p>For proper operation, a spark plug should be approximately between 500\u00b0C (932\u00b0F) and 800\u00b0C (1472\u00b0F). The two most common causes of spark plug problems are carbon fouling (below 450\u00b0C) and overheating (above 800\u00b0C). Overheating can lead to detonation, pre-ignition, and\/or engine damage, while carbon fouling can cause misfiring, poor performance, or a dead cylinder. Spark plug manufacturers modify the &#8220;heat range&#8221; of plugs by manipulating the follow design criteria:<\/p>\n<ul>\n<li>Surface area and\/or length of the insulator nose<\/li>\n<li>Thermal conductivity of the insulator, center electrode, etc.<\/li>\n<li>Structure of the center electrode such as a copper core, etc.<\/li>\n<li>Relative position of the insulator tip to the end of the shell (projection)<\/li>\n<\/ul>\n<p>This diagram from NGK Spark Plugs USA, illustrates this nicely:<\/p>\n<p><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.knology.net\/~rv7rotary\/Sparkp1.jpg?w=640\" \/><\/p>\n<p>In the Ford world common NGK heat ranges are:<\/p>\n<ul>\n<li>TR45 Stock in some NA applications<\/li>\n<li>TR55 Basic stock supercharged applications<\/li>\n<li>TR6\u00a0 Recommened for Higher than stock boost levels<\/li>\n<li>Heat Range 7 for high to extreme boost applications<\/li>\n<\/ul>\n<p>Choosing the correct heat range is vital for best operation of your performance engine.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A spark plug has one major job in life, to ignite the air &amp; fuel mixture in a gasoline engine. It&#8217;s pretty simple, but why are there so many spark plugs options for the same engine? One major component is called &#8220;Heat Range&#8221; For proper operation, a spark plug should be approximately between 500\u00b0C (932\u00b0F) [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":35,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","jetpack_post_was_ever_published":false,"_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_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[7],"tags":[3,4,5,6],"class_list":["post-23","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tech","tag-ford","tag-mustang","tag-sparkplug","tag-tech"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/gtconcepts.ca\/main\/wp-content\/uploads\/2016\/12\/Sparkp1.jpg?fit=782%2C583","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8in4L-n","jetpack-related-posts":[],"_links":{"self":[{"href":"http:\/\/gtconcepts.ca\/main\/wp-json\/wp\/v2\/posts\/23","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/gtconcepts.ca\/main\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/gtconcepts.ca\/main\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/gtconcepts.ca\/main\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/gtconcepts.ca\/main\/wp-json\/wp\/v2\/comments?post=23"}],"version-history":[{"count":5,"href":"http:\/\/gtconcepts.ca\/main\/wp-json\/wp\/v2\/posts\/23\/revisions"}],"predecessor-version":[{"id":28,"href":"http:\/\/gtconcepts.ca\/main\/wp-json\/wp\/v2\/posts\/23\/revisions\/28"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/gtconcepts.ca\/main\/wp-json\/wp\/v2\/media\/35"}],"wp:attachment":[{"href":"http:\/\/gtconcepts.ca\/main\/wp-json\/wp\/v2\/media?parent=23"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/gtconcepts.ca\/main\/wp-json\/wp\/v2\/categories?post=23"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/gtconcepts.ca\/main\/wp-json\/wp\/v2\/tags?post=23"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}