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[mandula]

I found out that my rear subframe rear bushings were teared up and could not find any replacements, so I decided to make them by my-self.

Here's some pictures of new ones, I used Powerflex 99-112 PU-bushigns (95 SHa) and made mountings for them. There was some R&D during manufacturing process so finished items are a bit different than on drawing.

Haven't mount them yet, will do it tomorrow and post some feedback how they work.


Dimensions for mounts

Powerflex 99-112 bushing dimensions


Old ones


Parts, I didn't use that lower plate because mount felt strong enough anyhow


Finished


Waiting for paint to dry..

[Nick W]

Nice. Could you have machined the centre from one piece and saved a bunch of welding?


And I'm going to borrow your dimensions and apply them to the rough jig I modeled for casting urethane into an old mount

[mandula]

It was very fast assembly like that, but of course it would be better and more pro from one piece to center I don't have machines to do that, dunno how much that would cost to order.. Steel was like couple of euros and set of two bushings about 35-40 euros.

[mandula]

Correction on dimensions: bolt holes (to car chassis) distance between each other is 115 mm, not 120 mm.

Almost got them installed, just needs to machine bolt holes to correct dimensions.

[mandula]

Done installing, was pretty easy job after all..

To drop rear subframe from rear:
- Lift rear on stands and remove rear wheels
- Remove rear shocks from bottom
- Remove locking bottom clips of brake flex hose and take out from holders
- Remove ABS sensor connectors from holders above rear bushings
- Remove two holder rubbers from end of exhaust pipe and one rubber near rear arch
- Put something between exhaust pipe end and bumber to hold exhaust pipe as low as possible
- Put jack under dif to hold it on place
- Remove rear bushing bolts and release jack to drop subframe
- Using steel bar or board to force subframe low as possible and lock it there
- Now you can see rear bushing bolts to subframe and remove them

Some pics of new bushings in place:








I hope this helps if somebody wants to also upgrade those bushings.

Instantly noticed better handling when cornering, no more feeling that rear is moving sideways.

Also resonation disappeared when using motor to slow down, usually happened when slowing down from 90 to 80 km/h.

Will go to MOT late this month, I hope they like this modification also 

[Nick W]

Looks good to me. It shows what is achievable with some thought and simple techniques.

[TheBoy]

Also may be worth those who can't fabricate them having a word with Serek, as he was looking to import various poly fixings, he may be able to get diff mounts.

I know he was already looking at the larger subframe bushes (proper Omega ones, as opposed to the Monaro ones a few of us have), wishbone ones etc...

[ronnyd]

Does putting it up on the forum infringe any copyrights? Just asking.

[05omegav6]

Does putting it up on the forum infringe any copyrights? Just asking.

Shouldn't as this is clearly a diy fabrication and isn't being passed off as anything else 

[mandula]

Does putting it up on the forum infringe any copyrights? Just asking.

Im not patented this (yet ) so I think it is okay to share this. And this aint exact copy of the original bushing there is no copyrights broken (I doubt there is any anyway).

[05omegav6]

It was a dig at a comment I made on another thread about summat being passed of as a genuine item. Which this clearly isn't 

[Lazydocker]

It was a dig at a comment I made on another thread about summat being passed of as a genuine item. Which this clearly isn't 

And a prime example of how this forum has gone downhill over the years...

[ronnyd]

Does putting it up on the forum infringe any copyrights? Just asking.

My original post was regarding the Powerflex drg.(PDF) which has a copywrite at the bottom. Just asking a question really as i have no idea.

[mandula]

Does putting it up on the forum infringe any copyrights? Just asking.

My original post was regarding the Powerflex drg.(PDF) which has a copywrite at the bottom. Just asking a question really as i have no idea.

Oh, that is found from www.powerflex.co.uk/i/product_images/99-112%20WEB.pdf, so it is freely available. And I think that copyright is just for preventing copying/reproducing the bushing it-self, correct me if I'm wrong.

[ronnyd]

Thanks for that mandula. 

[Lazydocker]

Does putting it up on the forum infringe any copyrights? Just asking.

My original post was regarding the Powerflex drg.(PDF) which has a copywrite at the bottom. Just asking a question really as i have no idea.

In which case, I apologise for misinterpreting it 

[se97jrdc]

After a year, is this a successful mod that allows enough movement when needed?

[mandula]

After a year, is this a successful mod that allows enough movement when needed?

Still attached, no faults or comments received during MOTs.
Handles still very well, very fun and predictable to drive during winter 

I have not took any closer look for awhile, but I try to remember to take some pics of this at the same time when I replace gearbox (when I got time to do it  ).
Maybe I replace LSDiff oils at the same time if I decide to drop the subframe for closer look   

[serek]

That set up in have on my car

[VXL V6]

I really need to get hold of a spare set of those triangle plates and clean and paint them ready for the project car.

[omegod]

I'm sure I have a decent pair of these somewhere

[VXL V6]

Let me know! 

[Vega]

That set up in have on my car

And how are the rear subframe rear bushings, are they any good, not to soft?
Are they from Poland?

[Nick W]

Or you could repair your own


The old parts in a homemade jig:





Filled with about £3 of urethane:





And the finished part before I bolted it back on the car:





The jig was made out of scrap, but bolts together to allow the repair of two mounts simultaneously. I would add some black pigment to the material, and blast the metal components if I cared about appearances

[serek]

That set up in have on my car

And how are the rear subframe rear bushings, are they any good, not to soft?
Are they from Poland?

They just do job , think they give more firm ride .


Re. diff mounts after fitting had bad expience at high speed from 100+MPH rear end had vibration, so I did ring supplier and ask about issue I have with them.
Thier tecnical department advice to drill few holes 10mm holes in poly
On next track day issue gone do happy days 

[Magwheels]

Or you could repair your own


The old parts in a homemade jig:





Filled with about £3 of urethane:





And the finished part before I bolted it back on the car:





The jig was made out of scrap, but bolts together to allow the repair of two mounts simultaneously. I would add some black pigment to the material, and blast the metal components if I cared about appearances

How are these lasting?

Mine have seen better days and am thinking of refurbing using the polyurethane.  If still good what type of urethane did you use as you can get different hardness ratings and don't fancy any thing to hard as it will affect the ride. I would rather waft than race!!

The main thing of course is have they stood the test of time?

[Nick W]

How are these lasting?

Mine have seen better days and am thinking of refurbing using the polyurethane.  If still good what type of urethane did you use as you can get different hardness ratings and don't fancy any thing to hard as it will affect the ride. I would rather waft than race!!

The main thing of course is have they stood the test of time?

It was still on the car when I sold it.
I've since done another pair, and haven't heard of any problems.



I bought the stiffest urethane, as it's not going to affect the ride. My car did get quieter as well as a bit more stable when the diff was properly attached to the car!

[Magwheels]

Thanks for that, sounds good I will give it a go!