{"id":2542,"date":"2017-07-28T15:33:52","date_gmt":"2017-07-28T15:33:52","guid":{"rendered":"http:\/\/www.specr53.com\/blog\/?p=2542"},"modified":"2025-02-16T00:28:29","modified_gmt":"2025-02-16T00:28:29","slug":"on-top-of-old-smokey","status":"publish","type":"post","link":"https:\/\/gcomotorsports.com\/specr53\/porsche\/on-top-of-old-smokey\/","title":{"rendered":"On top of old Smokey"},"content":{"rendered":"\n<p>Ever wonder what a bad air-oil separator looks like? &nbsp;This is it.<\/p>\n\n\n\n<figure class=\"wp-block-video\"><video height=\"720\" style=\"aspect-ratio: 1280 \/ 720;\" width=\"1280\" controls src=\"https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/Smokey_Start.mp4\"><\/video><\/figure>\n\n\n\n<p>We sent an oil sample off to the lab just to be safe and had the car towed to <a href=\"http:\/\/www.tpcracing.com\/index.html\" target=\"_blank\" rel=\"noopener\">TPCRacing<\/a> in Jessup. They did a great job sorting it out and getting me back on the road again. &nbsp;It turns out I had two unrelated problems: leaking water pump and bad AOS. &nbsp;I had planned to have the AOS changed during the winter and I suspected it was about time for the water pump, so I dodged a bullet.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/Waterpump-1024x1024.jpg\" alt=\"\" class=\"wp-image-4652\" srcset=\"https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/Waterpump-1024x1024.jpg 1024w, https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/Waterpump-300x300.jpg 300w, https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/Waterpump-150x150.jpg 150w, https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/Waterpump.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>The water pump (996-106-011-57-M100) was leaking at the housing and through the pulley seal. You can see from the photo below that the play in the bearing had allowed the blades to touch and score the block just a bit.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/Impeller-1024x1024.jpg\" alt=\"\" class=\"wp-image-4654\" srcset=\"https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/Impeller-1024x1024.jpg 1024w, https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/Impeller-300x300.jpg 300w, https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/Impeller-150x150.jpg 150w, https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/Impeller.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Many people make the mistake of using a pump with metal blades thinking it would be an upgrade. The problem is that when they contact the block, the debris can be catastrophic. The plastic impeller fails more gracefully.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"559\" src=\"https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/Tank-1024x559.jpg\" alt=\"\" class=\"wp-image-4655\" srcset=\"https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/Tank-1024x559.jpg 1024w, https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/Tank-300x164.jpg 300w, https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/Tank.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Early expansion tanks have a tendency to fail on track cars, so we got the updated tank while everything was apart (996-106-147-56-OEM). Shop around. &nbsp;Genuine Porsche tanks can run as much as $600, but you should be able to find them for around half of that (which is still nuts&#8230;) if you shop around a bit. &nbsp;In this case, the hoses were also brittle and failing (996-106-850-05-M100).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/hose-1024x1024.jpg\" alt=\"\" class=\"wp-image-4657\" srcset=\"https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/hose-1024x1024.jpg 1024w, https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/hose-300x300.jpg 300w, https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/hose-150x150.jpg 150w, https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/hose.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>The Air Oil Separator is supposed to separate oil vapor from the crank case and return it to the intake path. This appears to be an original item. They have gone through a couple of revisions since (996-107-023-55-M100). When they start to fail, you get about a tablespoon of oil that pools in your cylinders causing smoke at start up (see video.) When the fail completely, you can hydrolock the engine. Given where it sits on the engine, it&#8217;s impossible to inspect visually. &nbsp;You should think of it as a wear item and replace it whenever you get a clutch (like the IMS bearing.)<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"456\" src=\"https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/old_aos-1024x456.jpg\" alt=\"\" class=\"wp-image-4653\" srcset=\"https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/old_aos-1024x456.jpg 1024w, https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/old_aos-300x134.jpg 300w, https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/old_aos.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>We rounded out the repairs with a new idler pulley and belt. &nbsp;The idler pulley felt OK when it was on the car, but fell to pieces when we took it off.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ever wonder what a bad air-oil separator looks like? &nbsp;This is it. We sent an oil sample off to the lab just to be safe and had the car towed to TPCRacing in Jessup. They did a great job sorting it out and getting me back on the road again. &nbsp;It turns out I had &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/gcomotorsports.com\/specr53\/porsche\/on-top-of-old-smokey\/\" class=\"more-link\">Read more<span class=\"screen-reader-text\"> &#8220;On top of old Smokey&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":4653,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_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":[16],"tags":[24,34],"class_list":["post-2542","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-porsche","tag-24","tag-aos"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/gcomotorsports.com\/specr53\/wp-content\/uploads\/2025\/02\/old_aos.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/gcomotorsports.com\/specr53\/wp-json\/wp\/v2\/posts\/2542","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gcomotorsports.com\/specr53\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gcomotorsports.com\/specr53\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gcomotorsports.com\/specr53\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/gcomotorsports.com\/specr53\/wp-json\/wp\/v2\/comments?post=2542"}],"version-history":[{"count":2,"href":"https:\/\/gcomotorsports.com\/specr53\/wp-json\/wp\/v2\/posts\/2542\/revisions"}],"predecessor-version":[{"id":4807,"href":"https:\/\/gcomotorsports.com\/specr53\/wp-json\/wp\/v2\/posts\/2542\/revisions\/4807"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gcomotorsports.com\/specr53\/wp-json\/wp\/v2\/media\/4653"}],"wp:attachment":[{"href":"https:\/\/gcomotorsports.com\/specr53\/wp-json\/wp\/v2\/media?parent=2542"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gcomotorsports.com\/specr53\/wp-json\/wp\/v2\/categories?post=2542"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gcomotorsports.com\/specr53\/wp-json\/wp\/v2\/tags?post=2542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}