LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Making my own Bushings.

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Old 03-22-10 | 03:41 PM
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Default Making my own Bushings.

So Ive decided since no one makes upper/lower control arm bushings for 95-97 ls400's. I'm just going to make my own. Ive done this on other cars Ive had and its worked great. Hope if works well with the lexus. I will be using liquid urethane. The compound is 80a shore. I believe it wont be too stiff. I have used 94a before and it was pretty rough. I'll keep this thread updates as I continue the process. What do you guys think. I already ordered the strut rod bushings. lol. Im not going to try and attack that one.
Old 03-22-10 | 05:15 PM
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Sounds interesting. How will you get it the right shape?
Old 03-22-10 | 05:48 PM
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Originally Posted by amcdonal86
Sounds interesting. How will you get it the right shape?
Well first Im going to pull the control arm off. I will press out (torch out) the old bushing and clean up the ID of the control arm. I will keep the inner metal bushing and clean it up as well.

Once this is all done, I will then tape off one side of the control arm. I will position the metal bushing in the center and start pouring the liquid urethane in. MAKING SURE THE METAL BUSHING STAYS CENTERED. As it starts to set-up I will slowly pull out the inner bushing, let the whole thing dry, then lube up the metal bushing and put it back in. Any questions?
Old 03-22-10 | 06:00 PM
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Originally Posted by Thermactor
cam,
I would love to see you make a thread here with pictures of what you did and how you did it. You're my kind of guy - do it yourself all the way!
Thanks man. I take it as a challenge.
Old 03-22-10 | 06:02 PM
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If you understand how urethane works... Here is the chart of all the different compounds.

Again I purchased 8644k11

http://www.mcmaster.com/#urethane-ca...pounds/=6c2bge
Old 03-22-10 | 09:46 PM
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good luck, any poly bushing in the control arm is a waste on a street driven car imho because they really do just completely and utterly RUIN the ride.
Old 03-22-10 | 10:24 PM
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i've ridden in ADUS and Daizen equipped 1st gens....not fun.
Old 03-23-10 | 07:18 AM
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I had Poly Bushings on my GS and ride was still good. They made a lot more noise then the rubber bushings but overall ride was good compaired to the stock bushings. Cant wait to see how this turns out.
Old 03-23-10 | 09:27 AM
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Well, Im using a pretty soft compound. I believe that the Daizen and ADUS bushings are all 94a. Much harder compound. IM using 80A

Originally Posted by PureDrifter
good luck, any poly bushing in the control arm is a waste on a street driven car imho because they really do just completely and utterly RUIN the ride.

Last edited by camthman; 03-23-10 at 09:37 AM.
Old 03-23-10 | 09:31 AM
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Tensile strength for 80A is 1725 psi

Tensile strength for 94A is 3120 psi

Quite a bit of difference.
Old 03-23-10 | 05:45 PM
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Originally Posted by camthman
Tensile strength for 80A is 1725 psi

Tensile strength for 94A is 3120 psi

Quite a bit of difference.
What are the stock bushings rated at?
Old 03-23-10 | 06:27 PM
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This was an interesting site:
http://forums.turbobricks.com/showthread.php?t=146478

I'm not familiar with these types of cast products. Is this mixture prone to air bubbles once the harder is introduced/ mixed in?
Old 03-24-10 | 12:52 AM
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Originally Posted by RA40
This was an interesting site:
http://forums.turbobricks.com/showthread.php?t=146478

I'm not familiar with these types of cast products. Is this mixture prone to air bubbles once the harder is introduced/ mixed in?

wow pretty impressive...
Old 03-25-10 | 08:05 AM
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i am sure this DIY is not for everyone
if possible, some pictures will be nice
Old 03-25-10 | 08:26 AM
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Originally Posted by intermec
i am sure this DIY is not for everyone
if possible, some pictures will be nice
Im getting there.... Just waiting for parts and time.


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