{"id":1402,"date":"2025-02-20T11:24:00","date_gmt":"2025-02-20T16:24:00","guid":{"rendered":"https:\/\/www.bracketracer.com\/wordpress\/?p=1402"},"modified":"2025-07-31T19:35:29","modified_gmt":"2025-07-31T23:35:29","slug":"tuning-the-carburetor","status":"publish","type":"post","link":"https:\/\/www.bracketracer.com\/wordpress\/index.php\/2025\/02\/20\/tuning-the-carburetor\/","title":{"rendered":"Tuning the carburetor"},"content":{"rendered":"\n

I rebuilt the carb a couple of years ago, but I hadn’t really done much with it aside from setting the idle and idle mixture. Based on what the plugs looked like, and the odor in the garage after I parked it, the mixture was rich. I decided to put in smaller jets to see if I could get that solved.<\/p>\n\n\n

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This carb has a metering block with replaceable jets in the primary side, and a metering plate with a fixed hole drilled in them. I wasn’t too concerned about the secondaries, and changing that would mean buying a new metering plate, or converting the plate to a metering block with jets.<\/p>\n\n\n

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There were #69 jets in the primary, which were the ones that were in it when I bought the car.<\/p>\n\n\n\n

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I decided to try #67 jets, and put in new plugs while I was at it.<\/p>\n\n\n

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The new jets were an improvement, but it still smelled rich. Also, there was a bog on acceleration, probably due to the smaller jets. I put on a bigger accelerator pump cam, and switched the jets down again to #65.<\/p>\n\n\n

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That change worked out great. The acceleration was smooth, no more bog. Also the engine was running smoother overall, and the garage didn’t smell after I parked the car.<\/p>\n\n\n

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I rebuilt the carb a couple of years ago, but I hadn’t really done much with it aside from setting the idle and idle mixture. Based on what the plugs looked like, and the odor in the garage after I parked it, the mixture was rich. I decided to put in smaller jets to see […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,8],"tags":[],"class_list":["post-1402","post","type-post","status-publish","format-standard","hentry","category-camaro","category-engine-and-drivetrain"],"_links":{"self":[{"href":"https:\/\/www.bracketracer.com\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/1402","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bracketracer.com\/wordpress\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bracketracer.com\/wordpress\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bracketracer.com\/wordpress\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bracketracer.com\/wordpress\/index.php\/wp-json\/wp\/v2\/comments?post=1402"}],"version-history":[{"count":3,"href":"https:\/\/www.bracketracer.com\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/1402\/revisions"}],"predecessor-version":[{"id":1432,"href":"https:\/\/www.bracketracer.com\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/1402\/revisions\/1432"}],"wp:attachment":[{"href":"https:\/\/www.bracketracer.com\/wordpress\/index.php\/wp-json\/wp\/v2\/media?parent=1402"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bracketracer.com\/wordpress\/index.php\/wp-json\/wp\/v2\/categories?post=1402"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bracketracer.com\/wordpress\/index.php\/wp-json\/wp\/v2\/tags?post=1402"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}