# JDM S14 VSLD Swapped into 89' S13 Open Diff **URL:** \ **Category:** SON240sx Automotive\ **Created:** [August 14, 2008, 11:10am UTC](https://forums.speedlife.net/t/jdm-s14-vsld-swapped-into-89-s13-open-diff/117707 "2008-08-14T11:10:48Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![RED\_LINE](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/red_line/32/5656_2.png) [@RED\_LINE](https://forums.speedlife.net/u/RED_LINE)\ **Post date:** [August 14, 2008, 11:10am UTC](https://forums.speedlife.net/t/jdm-s14-vsld-swapped-into-89-s13-open-diff/117707/1 "2008-08-14T11:10:48Z")
hey guys, just wondering what I need if I want to swap in a JDM s14 vlsd into my 89’ S13, replacing the open diff. & what would be more suited? JDM S14 - 3.9final gear ratio / NonJdm S14 - 4.11final gear ratio Thanks. ---
**Author:** ![RED\_LINE](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/red_line/32/5656_2.png) [@RED\_LINE](https://forums.speedlife.net/u/RED_LINE)\ **Post date:** [August 15, 2008, 9:21am UTC](https://forums.speedlife.net/t/jdm-s14-vsld-swapped-into-89-s13-open-diff/117707/2 "2008-08-15T09:21:42Z")
no answers? I thought I’d get a good quick one on diffs from Dan/OSAD 😛 ---
**Author:** ![simplemind7](https://avatars.discourse-cdn.com/v4/letter/s/0ea827/32.png) [@simplemind7](https://forums.speedlife.net/u/simplemind7)\ **Post date:** [August 15, 2008, 1:05pm UTC](https://forums.speedlife.net/t/jdm-s14-vsld-swapped-into-89-s13-open-diff/117707/3 "2008-08-15T13:05:27Z")
you need the front S14 bushings and bolts (the 2 bolts near the drive shaft) and you need to swap on an S13 rear cover, everything else just bolts up. ---
**Author:** ![RED\_LINE](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/red_line/32/5656_2.png) [@RED\_LINE](https://forums.speedlife.net/u/RED_LINE)\ **Post date:** [August 15, 2008, 1:19pm UTC](https://forums.speedlife.net/t/jdm-s14-vsld-swapped-into-89-s13-open-diff/117707/4 "2008-08-15T13:19:13Z")
Can I use the s13 rear cover that I currently have on my open diff? ---
**Author:** ![Singh](https://avatars.discourse-cdn.com/v4/letter/s/43a26b/32.png) [@Singh](https://forums.speedlife.net/u/Singh)\ **Post date:** [August 15, 2008, 1:25pm UTC](https://forums.speedlife.net/t/jdm-s14-vsld-swapped-into-89-s13-open-diff/117707/5 "2008-08-15T13:25:39Z")
You can use the s13 open diff cover on the s14 diff but it will hold less oil make sure u get a liquid gasket or a actual paper gasket, fyi liquid gasket is better, and you will need the bushing’s and the bolts for the front of the s14 diff, brand new those will cost a shit load so hopefully you have those, and depending on whether the s14 diff is abs or non abs like ur s13 diff you’ll need a driveshaft, to find out if u do before you start look at the part that the driveshaft connects too, if that section is an inch longer then ur diff is abs, and u need abs s13 driveshaft. Hope that helps. ---
**Author:** ![Singh](https://avatars.discourse-cdn.com/v4/letter/s/43a26b/32.png) [@Singh](https://forums.speedlife.net/u/Singh)\ **Post date:** [August 15, 2008, 1:26pm UTC](https://forums.speedlife.net/t/jdm-s14-vsld-swapped-into-89-s13-open-diff/117707/6 "2008-08-15T13:26:33Z")
oh yeah and if a 4.11 final gear actual fits in that diff and you can do it properly with all the clearaences i would do it, because it will give u better acceleration. ---
**Author:** ![RED\_LINE](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/red_line/32/5656_2.png) [@RED\_LINE](https://forums.speedlife.net/u/RED_LINE)\ **Post date:** [August 15, 2008, 1:28pm UTC](https://forums.speedlife.net/t/jdm-s14-vsld-swapped-into-89-s13-open-diff/117707/7 "2008-08-15T13:28:18Z")
thanks for the info guys.