{"id":19187,"date":"2023-06-01T08:00:00","date_gmt":"2023-05-31T23:00:00","guid":{"rendered":"https:\/\/www.decoboco.info\/en\/?p=19187"},"modified":"2026-09-24T13:46:12","modified_gmt":"2026-09-24T04:46:12","slug":"zephyr550-400-forced-decompression-secondary-air-pump","status":"publish","type":"post","link":"https:\/\/www.decoboco.info\/en\/20230601\/decoboco-cars\/zephyr550zr550\/zephyr550-400-forced-decompression-secondary-air-pump","title":{"rendered":"ZEPHYR550\/400 – Reusing the secondary air pump with “forced decompression” inside the crankcase for high performance!"},"content":{"rendered":"
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I’m working on this between jobs (*\u00b4\u03c9\uff40*)
This is actually from a bit earlier.

This secondary air pump is a really nice system.
It would be such a waste to cut it out.

Please note that emission-controlled bikes cannot have it removed.<\/p>\n\n\n\n

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First, let me introduce the materials I gathered!
Hose and blowby extraction adapter<\/p>\n\n\n\n

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T-REV 1953 M30-P1.5 14\u03c6 Blowby extraction adapter<\/a><\/strong>
The ZEPHYR550\/400 has an oil filler cap thread size of M30-P1.5
I chose the thickest hose available.<\/p>\n\n\n\n

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When installed, it looks like this
and it does give off a bit of“young vibes”<\/strong>.<\/p>\n\n\n\n

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I found an interesting hose.
It’s silicone with reinforcing thread inside – very durable.

It’s thick but surprisingly flexible and looked interesting, so I bought it.
uxcell Silicone Vacuum Tube Heater Hose
14 mm Inner Diameter 1 M 101psi 392F Blue Reinforced High Temperature Engine Hose<\/a><\/strong>

The only colors available are“blue and red”<\/strong>which is a bit limiting…<\/p>\n\n\n\n

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The internet is amazing – I’m amazed by it every day ( \uff1b\u2200\uff1b)
I’ll continue this in the next blog post!<\/p>\n\n\n\n

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(‘\u25c7’)\u309e The ZEPHYR550\/400 is so much fun!
*Though I haven’t registered it yet…<\/h2>\n\n\n\n
<\/div>\n\n\n\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t\t\t\n\t\t\t\t\t\t\"\"\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\n\t\t\t\t\t\tUxcell silicon vacuum tube heater hose 14 mm ID 1 m 101psi 392F blue reinforced high-temperature engine\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\t\t
uxcell<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\u00a53,285\t\t\t\t\t\t\uff082026\/09\/19 10:33\u6642\u70b9 | Amazon\u8abf\u3079\uff09<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\"\"\n\t\t\t\t\t\t\t\u53e3\u30b3\u30df\u3092\u898b\u308b<\/span>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\tAmazon\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\tRakuten\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\tYahoo!\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\"\"\n\t\t\t\t\t\u30dd\u30c1\u30c3\u30d7<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\n\n\n
<\/div>\n\n\n\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t\t\t\n\t\t\t\t\t\t\"\"\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\n\t\t\t\t\t\tBlowby Takeoff Adapter M30\/P1.5 \u03c614 Black 1953\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\t\t
\u30c6\u30e9\u30e2\u30c8(TERAMOTO)<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\u00a56,397\t\t\t\t\t\t\uff082026\/09\/20 12:33\u6642\u70b9 | Amazon\u8abf\u3079\uff09<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\"\"\n\t\t\t\t\t\t\t\u53e3\u30b3\u30df\u3092\u898b\u308b<\/span>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\tAmazon\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\tRakuten\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\tYahoo!\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\"\"\n\t\t\t\t\t\u30dd\u30c1\u30c3\u30d7<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t","protected":false},"excerpt":{"rendered":"

I’m working on this between jobs (*\u00b4\u03c9\uff40*)This is actually from a bit earlier. This secondary air pump is a really nice system.It would be such a waste to cut it out. Please note that emission-controlled bikes cannot have it removed.<\/p>\n","protected":false},"author":2,"featured_media":19180,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"pochipp_cv_data":"{\"cd289247\":{\"pv\":576,\"imp\":476,\"clickedYahoo\":2,\"clickedOther\":2,\"clickedAmazon\":2},\"90f13e0c\":{\"pv\":576,\"imp\":440,\"clickedAmazon\":5,\"clickedOther\":3,\"clickedYahoo\":1}}","swell_btn_cv_data":"","footnotes":""},"categories":[41],"tags":[607,601,623,612],"class_list":["post-19187","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-zephyr550zr550","tag-zephyr-400","tag-zephyr-550","tag-zephyr400","tag-zephyr550"],"_links":{"self":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/posts\/19187","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/comments?post=19187"}],"version-history":[{"count":0,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/posts\/19187\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/media\/19180"}],"wp:attachment":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/media?parent=19187"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/categories?post=19187"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/tags?post=19187"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}