TX Gauging Interest: 90-94 LS400 Polyurethane Suspension Spring Insulators
#1
Driver School Candidate
Thread Starter
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Greetings,
First, I am a reputable vendor on LegacyGT.com, so please excuse my low post count. I DD a 1990 LS400, which I love, and I am an experienced aftermarket mechanic; the LS400 is my reliable car that I don't mess with much.
I am replacing front and rear Springs / Struts / Strut Mounts / Insulators on my LS400![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
Problem: A set of 4 insulators (the rubber piece between the Strut Top Mount aka top hat and the coil spring) runs about $200 for a set of 4 from Lexus. Also, the rubber is too soft and breaks down over time, and the shock bellow portion has cracked and fallen apart in my rear suspension. This is a bad design that most manufacturers don't do!
See part 48257B (top right):
![](http://www.lexussouthatlantaparts.com/images/parts/toyota/fullsize/NC0702F.jpg)
$200 is too much for too little to buy new ones. There is no aftermarket alternative.
![](http://images10.newegg.com/NeweggImage/productimage/A0VS_1_20111209_725382.jpg)
I am going to make a complete set of 70A durometer polyurethane insulators / coil spring upper seats, which will be molded to new KYB upper strut mounts SM5176 and SM5178 (front and rear). These will be compatible with any aftermarket bumpstop&bellow set for the 1995-1998 LS400, which will protect the strut rod from dirt. I bought Moog, which are cheap and good quality:
![](http://www.rockauto.com/getimage/getimage.php?imagekey=870112&imageurl=http%3A//www.rockauto.com/info/Moog/K90463_P04_ANG.jpg)
I can make you a set if you need them. THIS IS NOT A LINE OF BUSINESS, this is just something I can do for a small number of people if they are like me and want to save the money and get a proper quality product that will last. It would also be a way for me to recoupe my costs of getting the initial mold made, which is where most of my time and energy will go.
Cost: $48 for a set of 2, $96 for all 4 corners, plus modest shipping. That saves you roughly 50%, for something that should last a lot longer.
I can also do variable height casting, so anything between 1/4" and 3/4" should be viable, depending if you want to lower or raise your ride height a little. Stock insulators compress to roughly 3/8" height.
Mods please move thread if more appropriate elsewhere, or let me know if I broke some rule you have here
First, I am a reputable vendor on LegacyGT.com, so please excuse my low post count. I DD a 1990 LS400, which I love, and I am an experienced aftermarket mechanic; the LS400 is my reliable car that I don't mess with much.
I am replacing front and rear Springs / Struts / Strut Mounts / Insulators on my LS400
![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
Problem: A set of 4 insulators (the rubber piece between the Strut Top Mount aka top hat and the coil spring) runs about $200 for a set of 4 from Lexus. Also, the rubber is too soft and breaks down over time, and the shock bellow portion has cracked and fallen apart in my rear suspension. This is a bad design that most manufacturers don't do!
See part 48257B (top right):
![](http://www.lexussouthatlantaparts.com/images/parts/toyota/fullsize/NC0702F.jpg)
$200 is too much for too little to buy new ones. There is no aftermarket alternative.
![](http://images10.newegg.com/NeweggImage/productimage/A0VS_1_20111209_725382.jpg)
I am going to make a complete set of 70A durometer polyurethane insulators / coil spring upper seats, which will be molded to new KYB upper strut mounts SM5176 and SM5178 (front and rear). These will be compatible with any aftermarket bumpstop&bellow set for the 1995-1998 LS400, which will protect the strut rod from dirt. I bought Moog, which are cheap and good quality:
![](http://www.rockauto.com/getimage/getimage.php?imagekey=870112&imageurl=http%3A//www.rockauto.com/info/Moog/K90463_P04_ANG.jpg)
I can make you a set if you need them. THIS IS NOT A LINE OF BUSINESS, this is just something I can do for a small number of people if they are like me and want to save the money and get a proper quality product that will last. It would also be a way for me to recoupe my costs of getting the initial mold made, which is where most of my time and energy will go.
Cost: $48 for a set of 2, $96 for all 4 corners, plus modest shipping. That saves you roughly 50%, for something that should last a lot longer.
I can also do variable height casting, so anything between 1/4" and 3/4" should be viable, depending if you want to lower or raise your ride height a little. Stock insulators compress to roughly 3/8" height.
Mods please move thread if more appropriate elsewhere, or let me know if I broke some rule you have here
![Smilie](https://www.clublexus.com/forums/images/smilies/smile.gif)
Thread
Thread Starter
Forum
Replies
Last Post
westopill
LS - 1st and 2nd Gen (1990-2000)
7
06-09-18 08:26 PM
LS400Club
LS - 1st and 2nd Gen (1990-2000)
39
04-16-16 03:51 PM
Thermactor
LS460 / 430 / 400 / 600h Classifieds
1
10-01-07 08:31 PM