{"id":56876,"date":"2019-05-03T08:14:52","date_gmt":"2019-05-03T13:14:52","guid":{"rendered":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/?p=56876"},"modified":"2019-05-03T08:14:57","modified_gmt":"2019-05-03T13:14:57","slug":"rear-main-seal-installation-1964-chrysler-300k","status":"publish","type":"post","link":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/05\/rear-main-seal-installation-1964-chrysler-300k","title":{"rendered":"Rear main seal installation 1964 Chrysler 300K"},"content":{"rendered":"<p><img decoding=\"async\" class=\"alignnone size-full wp-image-55058\" src=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2018\/02\/1964-chrysler-300k.jpg\" alt=\"1964 Chrysler 300K\" width=\"500\" height=\"255\" srcset=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2018\/02\/1964-chrysler-300k.jpg 500w, https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2018\/02\/1964-chrysler-300k-300x153.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>I have a 413CI RB big block in this car. I am needing to replace the rear main seal next week, so I am shopping for a seal kit. These are the options I have, which would be the best choice? 1. Felpro 2-Piece, Fluoroelastomer seal; 2. Mr Gasket Rear Main Seal, 2-Piece Silicone; 3. Felpro 2-Piece, Rubber Rear Main Seal; or 4. Felpro Rear Main Seal, 2-Piece, OEM-Style Rope Thanks<\/p>\n<hr \/>\n<hr \/>\n<p>To narrow down the choices one might consider the installation tools. You will need a rear main seal installation tool with a bridge to install the rope seal properly.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-56890\" src=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2019\/05\/1964-chrysler-300k-lower-rope-rear-main-seal.gif\" alt=\"1964-chrysler-300k-lower-rope-rear-main-seal\" width=\"400\" height=\"494\" \/><\/p>\n<p>An example of installation of rope seal without the proper tool.<\/p>\n<div class=\"lyte-wrapper fourthree\" title=\"How To Properly Install The Crankshaft Rear Main Rope Seal On The Willys MB \/ Ford GPW L134 Engine\" style=\"width:420px;max-width:100%;margin:5px;\"><div class=\"lyMe hidef qsa_\\&amp;start\\=143\" id=\"WYL_vVLXAGKjnGI\" itemprop=\"video\" itemscope itemtype=\"https:\/\/schema.org\/VideoObject\"><div><meta itemprop=\"thumbnailUrl\" content=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/plugins\/wp-youtube-lyte\/lyteCache.php?origThumbUrl=https%3A%2F%2Fi.ytimg.com%2Fvi%2FvVLXAGKjnGI%2Fmaxresdefault.jpg\" \/><meta itemprop=\"embedURL\" content=\"https:\/\/www.youtube.com\/embed\/vVLXAGKjnGI\" \/><meta itemprop=\"duration\" content=\"PT10M18S\" \/><meta itemprop=\"uploadDate\" content=\"2019-01-10T00:27:35Z\" \/><\/div><div id=\"lyte_vVLXAGKjnGI\" data-src=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/plugins\/wp-youtube-lyte\/lyteCache.php?origThumbUrl=https%3A%2F%2Fi.ytimg.com%2Fvi%2FvVLXAGKjnGI%2Fmaxresdefault.jpg\" class=\"pL\"><div class=\"tC\"><div class=\"tT\" itemprop=\"name\">How To Properly Install The Crankshaft Rear Main Rope Seal On The Willys MB \/ Ford GPW L134 Engine<\/div><\/div><div class=\"play\"><\/div><div class=\"ctrl\"><div class=\"Lctrl\"><\/div><div class=\"Rctrl\"><\/div><\/div><\/div><noscript><a href=\"https:\/\/youtu.be\/vVLXAGKjnGI\" rel=\"nofollow\"><img decoding=\"async\" src=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/plugins\/wp-youtube-lyte\/lyteCache.php?origThumbUrl=https%3A%2F%2Fi.ytimg.com%2Fvi%2FvVLXAGKjnGI%2F0.jpg\" alt=\"How To Properly Install The Crankshaft Rear Main Rope Seal On The Willys MB \/ Ford GPW L134 Engine\" width=\"420\" height=\"295\" \/><br \/>Watch this video on YouTube<\/a><\/noscript><meta itemprop=\"description\" content=\"Video showing the proper way to install the Crankshaft Rear Main Rope Seal on the Willys MB, Ford GPW, Willys CJ2a CJ3a CJ3b CJ5 M38 M38a1 M170 Rear main seal available here https:\/\/www.rfjp.com\/p-1903-crankshaft-seal-rear-main-felpro-637237-felpro.aspx GPW L134 Engine. Part of the Team G503 \/ G503 TV Video Series on YouTube. All parts provided by Ron Fitzpatrick Jeep Parts. www.rfjp.com Automotive Engine Rebuilders Association, AERA TB2025 The AERA Technical Committee offers the following information on the rear main bearing seal caution on 1939-71 Jeep 2.2L engines. These engines are sometimes referred to as the F &amp; L head engines. During production of these engines, two different cylinder blocks were manufactured. The early cylinder blocks had a rope rear main seal installed in them while later production blocks had conventional type rear main bearing seal installed in them. When assembly of these engines is taking place, make sure you have the correct type of seal will help prevent engine failure. If the conventional rear main seal is installed in the early blocks that require a rope seal, there may be a possibility if bearing failure. On the conventional seal is an arrow showing the direction of the crankshaft rotation as shown in Figure 1. This arrow (marked with white) should be visible form the rear of the engine when properly installed. One way to verify that you are using the correct rear main seal is that the conventional seal is used on crankshafts that have a rear crankshaft seal area diameter of 2.3202 - 2.312. The rear main bearing seal has to be lubricated during installation. If the seal is to tight, no amount of special type lubricant will make it work properly. Rear main bearing seal fit has to be correct or a leaking rear main bearing seal and\/or a possible rear main bearing problem can occur. The AERA Technical Committee\"><\/div><\/div><div class=\"lL\" style=\"max-width:100%;width:420px;margin:5px;\"><\/div><\/p>\n<p>I wouldn&#8217;t venture to say that any one seal is the best choice. They are all designed to perform the same function.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I have a 413CI RB big block in this car. I am needing to replace the rear main seal next week, so I am shopping for a seal kit. These are the options I have, which would be the best choice? 1. Felpro 2-Piece, Fluoroelastomer seal; 2. Mr Gasket Rear Main Seal, 2-Piece Silicone; 3.&hellip;&nbsp;<a href=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/05\/rear-main-seal-installation-1964-chrysler-300k\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Rear main seal installation 1964 Chrysler 300K<\/span><\/a><\/p>\n","protected":false},"author":14894,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[1,42],"tags":[78],"class_list":["post-56876","post","type-post","status-publish","format-standard","hentry","category-auto-repair-questions","category-chrysler","tag-rear-main-seal"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.0 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Rear main seal installation 1964 Chrysler 300K - FreeAutoMechanic Advice<\/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:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/05\/rear-main-seal-installation-1964-chrysler-300k\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rear main seal installation 1964 Chrysler 300K\" \/>\n<meta property=\"og:description\" content=\"I have a 413CI RB big block in this car. I am needing to replace the rear main seal next week, so I am shopping for a seal kit. These are the options I have, which would be the best choice? 1. Felpro 2-Piece, Fluoroelastomer seal; 2. Mr Gasket Rear Main Seal, 2-Piece Silicone; 3.&hellip;&nbsp;Read More &raquo;Rear main seal installation 1964 Chrysler 300K\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/05\/rear-main-seal-installation-1964-chrysler-300k\" \/>\n<meta property=\"og:site_name\" content=\"FreeAutoMechanic Advice\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/freeautomechanic\" \/>\n<meta property=\"article:published_time\" content=\"2019-05-03T13:14:52+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-05-03T13:14:57+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2018\/02\/1964-chrysler-300k.jpg\" \/>\n<meta name=\"author\" content=\"my64chry\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"my64chry\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Rear main seal installation 1964 Chrysler 300K - FreeAutoMechanic Advice","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:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/05\/rear-main-seal-installation-1964-chrysler-300k","og_locale":"en_US","og_type":"article","og_title":"Rear main seal installation 1964 Chrysler 300K","og_description":"I have a 413CI RB big block in this car. I am needing to replace the rear main seal next week, so I am shopping for a seal kit. These are the options I have, which would be the best choice? 1. Felpro 2-Piece, Fluoroelastomer seal; 2. Mr Gasket Rear Main Seal, 2-Piece Silicone; 3.&hellip;&nbsp;Read More &raquo;Rear main seal installation 1964 Chrysler 300K","og_url":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/05\/rear-main-seal-installation-1964-chrysler-300k","og_site_name":"FreeAutoMechanic Advice","article_publisher":"https:\/\/www.facebook.com\/freeautomechanic","article_published_time":"2019-05-03T13:14:52+00:00","article_modified_time":"2019-05-03T13:14:57+00:00","og_image":[{"url":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2018\/02\/1964-chrysler-300k.jpg","type":"","width":"","height":""}],"author":"my64chry","twitter_card":"summary_large_image","twitter_misc":{"Written by":"my64chry","Est. reading time":"1 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