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Old 11-12-2011, 11:54 AM   #1
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DIY: Make your own cradle bushing inserts.

I am not taking credit for this DIY mod, but I did help tkrupinski with this project, so we are posting this DIY as a joint venture.


Make your own street version cradle bushings.

This mod is for someone that needs a cheap alternative to street bushings.

1 Purchase a large tube of self leveling two part seam sealer. Any brand will work fine but I do know that the 3m in the picture below gets very hard and sets up in about 10min.



You also need the proper gun and tips to dispense the dual tube material.



2 remove or lower suspension cradle to access the top of the cradle bushings. (If you don't know how, then you'll need to find another DIY to show you how to do this.)

3 Remove dirt and debris from bushing air pockets with compressed air.

4 Apply self leveling seam sealer into the bushing filling the air pockets completely.



5 Wipe off all excess sealer before it starts to harden.

Front bushing:


Rear bushing:


6 After sealer starts to harden wipe mounting surface with some sort of paint thinner to avoid potential squeaks due to body rub.

7 Let dry one hour then reinstall suspension cradle.
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Old 11-12-2011, 12:17 PM   #2
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That right there is smart, That is Camaro Fabrications at its best.
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Old 11-12-2011, 05:40 PM   #3
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What is the point?

I am missing something.
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Old 11-12-2011, 06:11 PM   #4
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Creative as I have come to expect from D_E.
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Old 11-12-2011, 06:29 PM   #5
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Quote:
Originally Posted by Madness11 View Post
What is the point?

I am missing something.
This mod saves you about $250.
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Old 11-12-2011, 08:04 PM   #6
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looks good, wounder if it has the same effect.. also since its a lot of work to drop the cradle woundnt be best to just change out the bushings..
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Old 11-12-2011, 08:11 PM   #7
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This mod saves you about $250.
But what does it do. A solid cradle bushing.
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Old 11-12-2011, 08:13 PM   #8
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Quote:
Originally Posted by Madness11 View Post
What is the point?

I am missing something.
This is from the Pfadt website about using their solid subframe bushings:
With the Pfadt Camaro Solid Subframe bushings you can completely eliminate subframe movement. By solidly mounting the rear subframe you will find that the car feels more precise and reacts to your steering inputs more quickly. Drag racers will find that their launches will be more controlled and wheel hop will be drastically reduced if not eliminated. When launching the car before we found that the subframe would violently oscillate and cause a drastic reduction in traction. Now with the solid subframe mounts the launch is substantially smoother and more controlled. Auto-crossers and road-racers will find that the rear end is more controlled and the car is far more stable and predictable. After the installation of the solid subframe mounts the chassis and subframe are no longer acting as separate structures so the rigidity and strength of the rear subframe and chassis is also improved.

This mod should provide similar results for a lot less money.

Quote:
Originally Posted by stieger View Post
This mod saves you about $250.
The solid subframe bushings I put in my car cost about $700. This costs less than $50. The street kit inserts from some shops cost about $200. So, yeah, it saves some money.

Quote:
Originally Posted by MARINE1991 View Post
looks good, wounder if it has the same effect.. also since its a lot of work to drop the cradle woundnt be best to just change out the bushings..
I'm pretty sure you have to drop the cradle to change out the bushings.
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Old 11-12-2011, 08:44 PM   #9
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Nice DIY DE!

Just want to point out that the title should be DIY Rear cradle bushing INSERTS as this will not perform the same as a solid bushing or a polyurethane replacement. If the seam sealer hardens to roughly the same durometer as the bushing inserts that are on the market, then the same performance could be expected.

Oh and BTW dropping the cradle is not that big of a deal. Its easier than removing a solid rear axle. Changing out the entire bushing can be a major pain in the butt, depending on how well the OEM bushings are seated in the cradle.
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Old 11-12-2011, 09:22 PM   #10
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Quote:
Originally Posted by Squintz Palladoris View Post
Nice DIY DE!

Just want to point out that the title should be DIY Rear cradle bushing INSERTS as this will not perform the same as a solid bushing or a polyurethane replacement. If the seam sealer hardens to roughly the same durometer as the bushing inserts that are on the market, then the same performance could be expected.

Oh and BTW dropping the cradle is not that big of a deal. Its easier than removing a solid rear axle. Changing out the entire bushing can be a major pain in the butt, depending on how well the OEM bushings are seated in the cradle.
Thanks. But this was tkrupinski's idea.

We think that this method is even better than the cradle bushing inserts some vendors sell because it completely fills the bushings without there being any seams to make for extra play in the bushings.

I've asked a mod to modify the title to make it more accurate.
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Old 11-13-2011, 01:08 AM   #12
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It is a good budget mod, but does not come close to the stability a quality sub-frame bush insert will offer. The control surfaces that contact the monocoque are unchanged. The underside of the bushes are not filled. That said it is a step up from the OE deeply NVH voided sub-frame bushes coming close to the new improved OE rubber sub-frame bushes that began coming down the assembly line with the Vert.

I say cool mod and very creative!
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Old 11-13-2011, 06:25 AM   #13
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Quote:
Originally Posted by JusticePete View Post
It is a good budget mod, but does not come close to the stability a quality sub-frame bush insert will offer. The control surfaces that contact the monocoque are unchanged. The underside of the bushes are not filled. That said it is a step up from the OE deeply NVH voided sub-frame bushes coming close to the new improved OE rubber sub-frame bushes that began coming down the assembly line with the Vert.

I say cool mod and very creative!
This is an alternative to the "STREET BUSHING" which consists of poly spacers that are inserted into the original cradle bushing"NOT A REPLACEMT FOR SOLID BUSHINGS". The mod is to save someone money, time and the hassle of changing bushing if not really needed.
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Old 11-13-2011, 09:59 AM   #14
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Quote:
Originally Posted by Darth_Emma View Post
I'm pretty sure you have to drop the cradle to change out the bushings.
No just lower it same as inserts; that's how I did my full replacements.
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Old 11-13-2011, 10:11 AM   #15
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No just lower it same as inserts; that's how I did my full replacements.
Yep, but I guess my point was that you can't replace the bushings without lowering it. Thanks for clarifying that. (I guess I didn't think there was a difference between "lower" and "drop.")
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Old 11-14-2011, 05:38 PM   #16
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Well we definitely wouldn't assign the same level of performance for this mod as we would our Solid Subframe Mounts... and eventually the sealer may break down, but this isn't a bad idea at all. Although if I was going to the effort of dropping the rear subframe I would probably just install Solid Subframe Mounts and be done with it once and for all.
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Old 11-14-2011, 07:15 PM   #17
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Quote:
Originally Posted by PfadtRacing View Post
Well we definitely wouldn't assign the same level of performance for this mod as we would our Solid Subframe Mounts... and eventually the sealer may break down, but this isn't a bad idea at all. Although if I was going to the effort of dropping the rear subframe I would probably just install Solid Subframe Mounts and be done with it once and for all.
You don't have to remove the cradle for the mod, just lowered it enough to fill the bushings. The 3m sealer is a lot more durable than you think, just try it and post back.
For $50 it is a great improvement over the stock bushing.
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Old 11-14-2011, 07:21 PM   #18
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Originally Posted by PfadtRacing View Post
Well we definitely wouldn't assign the same level of performance for this mod as we would our Solid Subframe Mounts... and eventually the sealer may break down, but this isn't a bad idea at all. Although if I was going to the effort of dropping the rear subframe I would probably just install Solid Subframe Mounts and be done with it once and for all.
I spent the $700 and put in the Pfadt solid subframe mounts in my own car. However, not everyone has $700 to spend on solid subframe mounts.

I asked the same question about the sealer we put in the car. I am astounded by how hard it is. It can't be broken by bashing it with a sledgehammer.

I think this is a pretty good solution for someone who can do the work themself and who is looking for improved performance without spending a lot of money.
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Old 11-14-2011, 08:53 PM   #19
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Originally Posted by tkrupinski View Post
You don't have to remove the cradle for the mod, just lowered it enough to fill the bushings. The 3m sealer is a lot more durable than you think, just try it and post back.
For $50 it is a great improvement over the stock bushing.
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Old 11-30-2011, 11:03 PM   #20
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Quote:
Originally Posted by Darth_Emma View Post
I spent the $700 and put in the Pfadt solid subframe mounts in my own car. However, not everyone has $700 to spend on solid subframe mounts.

I asked the same question about the sealer we put in the car. I am astounded by how hard it is. It can't be broken by bashing it with a sledgehammer.

I think this is a pretty good solution for someone who can do the work themself and who is looking for improved performance without spending a lot of money.
So since you've driven both (solid & the sealer), how to the two compare in the seat?

Or for anyone else that would know, how much better would the full bushings be over the inserts for a lightly modded car (CAI & tune)? Really just want to get rid of the sloppy rear in the corners. Would I need the full bushes, or will the inserts be enough?
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Old 12-03-2011, 06:52 AM   #21
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So since you've driven both (solid & the sealer), how to the two compare in the seat?

Or for anyone else that would know, how much better would the full bushings be over the inserts for a lightly modded car (CAI & tune)? Really just want to get rid of the sloppy rear in the corners. Would I need the full bushes, or will the inserts be enough?
The mod will be similar to the street version inserts and still allow some movement for a little better ride over solid bushings. Just try it and if the performance side is not what you were looking for you are only out 30 to 50 dollars.
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Old 12-11-2011, 06:05 PM   #22
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So since you've driven both (solid & the sealer), how to the two compare in the seat?

Or for anyone else that would know, how much better would the full bushings be over the inserts for a lightly modded car (CAI & tune)? Really just want to get rid of the sloppy rear in the corners. Would I need the full bushes, or will the inserts be enough?
To answer your question I can not tell a difference between the two on the street. Its a great cheap mod.
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Old 12-11-2011, 06:54 PM   #23
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To answer your question I can not tell a difference between the two on the street. Its a great cheap mod.
This is good news!!
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Old 11-10-2012, 01:23 PM   #24
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That said it is a step up from the OE deeply NVH voided sub-frame bushes coming close to the new improved OE rubber sub-frame bushes that began coming down the assembly line with the Vert
There are different bushings in the vert? And these bushings perform better than the old ones, even the old ones with inserts?

Please enlighten me.
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