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Rear subframe rear bushings

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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  :)

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