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Replacing Rear Subframe rubber mounts

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Old 20 September 2016, 06:22 AM
  #31  
JGlanzaV
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I think you will find they need pressing in....
Old 20 September 2016, 07:56 AM
  #32  
The Rig
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They are pressed in as far as they can go , I used the threaded bar to get the alloy insert in , the poly part is fully in , as in the picture , just the overhang underneath

Weird
Old 20 September 2016, 07:57 AM
  #33  
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It's almost like the inserted part of the poly bush is too long
Old 20 September 2016, 08:15 AM
  #34  
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Here's some more pics

The metal insert is flush at top but doesn't go all the way to the bottom , wondering if I trim the poly bush to be flush or just fit it as it is








Old 20 September 2016, 09:06 AM
  #35  
The Rig
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But then looking at the original type, it looks like this too has more rubber protruding that the washer/bolt sit against

Old 20 September 2016, 09:27 AM
  #36  
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where is the big washer in all this ?
mine came with 4 washers.
Old 20 September 2016, 11:44 AM
  #37  
The Rig
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Never came with any washers , I have the 4 big washers that are on the original bolts but that's it .
Old 20 September 2016, 11:57 AM
  #38  
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once all tightened up isnt ok ? as long as the bush isnt loose its doing the job,
It will only tighten up until the tubes hit anyway.
Old 20 September 2016, 12:03 PM
  #39  
The Rig
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Yeah that's my thought process now , it just looks weird , I'm just questioning wether the poly bush should be crushed/squashed up when I tighten as that's what happens underneath etc

Cheers
Old 20 September 2016, 12:09 PM
  #40  
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I bought a set of the ones you have and found I had similar issues. It seems that either the polybush or the crush tube is too big in width. I replaced every other bush on the rear with Superpro and although snug they took nowhere near the effort required to fit as these did.

It would seem that because the crush tube is too big it stretches the polybush slightly when you insert it and you end up with basically an excess of the polybush on one side. In my case I turned the crush tubes down very slightly in the lathe until they took about the same effort as the Superpros to fit. They now fit as I would expect them too...

It's a shame that none of the big manufacturers make a poly for the subframe, I also bought a set from a company called FloFlex but when they arrived I measured them and the tolerances were all over the shop! Promptly binned those and bought these DeFlex ones. Haven't yet put the subframe back on the car and I'm wondering if I should just bite the bullet and put the Subaru GrpN ones in...
Old 20 September 2016, 12:25 PM
  #41  
The Rig
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Cheers for the input bud

I'm wondering whether I should trim the excess protruding underneath so it's flush with the washer part or if it's meant to protrude , if you look at the original use by Subaru it too has a protruding bit of rubber past the metal sleeve the washer loads onto ??
Old 20 September 2016, 12:27 PM
  #42  
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Originally Posted by Laupy
I bought a set of the ones you have and found I had similar issues. It seems that either the polybush or the crush tube is too big in width. I replaced every other bush on the rear with Superpro and although snug they took nowhere near the effort required to fit as these did.

It would seem that because the crush tube is too big it stretches the polybush slightly when you insert it and you end up with basically an excess of the polybush on one side. In my case I turned the crush tubes down very slightly in the lathe until they took about the same effort as the Superpros to fit. They now fit as I would expect them too...

It's a shame that none of the big manufacturers make a poly for the subframe, I also bought a set from a company called FloFlex but when they arrived I measured them and the tolerances were all over the shop! Promptly binned those and bought these DeFlex ones. Haven't yet put the subframe back on the car and I'm wondering if I should just bite the bullet and put the Subaru GrpN ones in...
I ordered a load from the States all ok,
I then purchased a few from here and there, and they were crap, the Diff support ones were miles too big, ended up trimming it here and there to make those fit.
Old 20 September 2016, 12:29 PM
  #43  
The Rig
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So to trim the excess so the bolt washer sits flush with poly washer or let it be crushed / squashed so bolt washer sits against excess ?

Last edited by The Rig; 20 September 2016 at 12:33 PM.
Old 20 September 2016, 12:38 PM
  #44  
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id just bolt it up, the excess isnt between the bush/frame and chassis, so it will all sit right,
any excess is just at the bolt end, under the washer, so why worry.

Old 20 September 2016, 12:41 PM
  #45  
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Yeah , I will go with that

Cheers guys
Old 21 September 2016, 06:39 AM
  #46  
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Sorry for re-working but why don't use sti group n bushings or oem ones?
Old 21 September 2016, 08:56 AM
  #47  
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The poly bushes were readily available , ive used poly bushes elsewhere so had no reason to doubt them , plus the group N ones are £80 and out of stock lol
Old 21 September 2016, 09:09 PM
  #48  
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Well , Avoid Poly torq in Wrexham who make these , acknowledges his bushes are faulty but blames varying car designs on the fault , it's my fault these don't fit apparantly as its an import ?

So another product / seller to avoid

Now the hunt for proper bushes to get my car back on the road !!!!
Old 21 September 2016, 09:24 PM
  #49  
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I'd avoid Flo-Flex as well. Definitely not a quality item. If you find any other manufacturer of Polys for the subframe let me know!
Old 23 September 2016, 09:24 AM
  #50  
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Think i'll go with the group n ones. Fmj fitted poly to his . Not sure if its the same as those
Old 23 September 2016, 09:44 AM
  #51  
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Originally Posted by The Rig
Well , Avoid Poly torq in Wrexham who make these , acknowledges his bushes are faulty but blames varying car designs on the fault , it's my fault these don't fit apparantly as its an import ?

So another product / seller to avoid

Now the hunt for proper bushes to get my car back on the road !!!!
fecking awesome customer service there then . . .
Old 23 September 2016, 09:49 AM
  #52  
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Taken from fmj's build thread .

They were the only bush I couldn't find from a decent manufacturer. I have seen a thread where some fitted super pro/power flex or similar to a new age (bigger bush) so they do or did exist but the only thing I could ever find was lock bolts and the bush add on spacers. So I got them from a lesser known company on eBay, I think it was flow flex or similar. They may be ok and they seem ok but would rather have stuck to my preferred makes if possible. I will try them and see if I have any issues. Worse outcome will be they perish and I pull them out and have some made for me.

You can get a set of group N original items from ICP for £80. But they may need to be machine pressed in (just a guess as they have a steel outer).
Old 23 September 2016, 08:36 PM
  #53  
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0191 410 3770 the only person you will speak to is Alyn.

IIRC they are £25 each for the subframe bushes.
Old 23 September 2016, 08:40 PM
  #54  
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Originally Posted by gary77
You can get a set of group N original items from ICP for £80. But they may need to be machine pressed in (just a guess as they have a steel outer).
They do need pressed in.

Another option is to replace the subframe, Type R subframes solid mount so no need for the bushes.
Old 23 September 2016, 08:42 PM
  #55  
The Rig
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Originally Posted by JDM_Stig
fecking awesome customer service there then . . .
Indeed , I will post up my conversations with him , it started off ok once he acknowledged the problem , then I think his pills wore off the next day and it all changed , makes for interesting reading lol
Old 23 September 2016, 09:17 PM
  #56  
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big washer and squash the lot up, theres no point in having the bushes if the are easy to slide in, all the excess needs to be compressed to make it do its thing. i changed my subframe recently to a tubluar one. no mounting bushes but the diffmounts i used powerflex. they was very easy to push in but seemed to wide. bolted up and all squashed nice.
Old 23 September 2016, 10:14 PM
  #57  
The Rig
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Totally agree but there is a limit to how much excess you can have, these bushes distored so much they looked like amushroom underneath before tightening the bolts etc

Here is a part conversation i had with Michael Mason AKA polytorq in Wrexham after i had explained about 4 times i handt left the sleeves in the subframe hole, it went on far too long..........












Hi,
I managed to remove an Alloy insert

The Inner diamter of the poly bush when installed into the subframe is 24mm

The alloy pin is 24.8mm

The depth of the poly bush itself is 35.2 mm, the alloy pin is 33mm , this results in the extra 2mm of extra polybush that pro…









Mike mason replied


Yes it should be the same. That tells me the hole is too tight and elongated the bush. I will make 4 inserts 24 MM dia. The excess on the poly will have to be trimmed off. So your model is a jap import. Mike

On 20/09/2016, 23:51, timmyrogerson wrote:

Re: timmyrogerson has sent a question about item #322237541726, ending on 22-Sep-16 08:13:00 BST - Subaru Impreza inc WRX & STI 1993-2000 Rear Subframe Bushes. RED Polyurethane





On 21/09/2016, 11:13, timmyrogerson wrote:

Re: timmyrogerson has sent a question about item #322237541726, ending on 22-Sep-16 08:13:00 BST - Subaru Impreza inc WRX & STI 1993-2000 Rear Subframe Bushes. RED Polyurethane

Hi,
Can we confirm im being sent 4 new alloy inserts measuring 24mm and new poly bushes measuring exactly 33mm in depth from tip to end as im in limbo as car is off the road until i fit this part

Thanks



Mike mason replied
Hi. I don't see any point. I need the other parts back for a full refund. As this is a problem I have never encountered before I will wasting my time and yours. Once you have removed the bushes from the subframe take the measurement of the hole dia and the the thickness of the subframe and I might be able to produce a special set for your car. It would also help if you confirm when the car was imported into the uk. I will amend my listing to advise owners of imported cars to provide dimensions before I ship. Mike



New message from: polytorq (814)

Check out my other stuff. I make high performance engine mountings. Whichever brand you have bought the material is not as tough as Polytorq. You mentioned if you get a cut in polyurethane it will split. True. But not our material. It is TDI. where's as all others are inferior MDI. our material will never split. Ever. Good luck

<h1 style="font-family: Helvetica, Arial, sans-serif; font-weight: normal; line-height: 15px; color: #808284; text-align: left; font-size: 13px; margin: 0 0 4px;" align="left">New message from: polytorq (814)</h1> <h3 style="font-family: Helvetica, Arial, sans-serif; font-weight: normal; line-height: 19px; color: #231f20; text-align: left; font-size: 14px; margin: 0 0 2px; font-weight:none;" align="left">Haha. Bmw e36 e46. Drift grade. Stretched to two ton. They fit. Been supplying Motorsport for 15 years. Developed the original polybush. You really don't know who you are talking too

On 22/09/2016, 01:25, timmyrogerson wrote:

timmyrogerson has sent a question about item #322237541726, ending on 22-Sep-16 08:13:00 BST - Subaru Impreza inc WRX & STI 1993-2000 Rear Subframe Bushes. RED Polyurethane

You make engine mountings ? **** good luck to those guys trying to get the engine to fit afterwards .




New message from: polytorq (814)

Silly man. I make a complete set for the Impreza but only sell it direct to Motorsport

On 22/09/2016, 01:32, timmyrogerson wrote:

timmyrogerson has sent a question about item #322237541726, ending on 22-Sep-16 08:13:00 BST - Subaru Impreza inc WRX & STI 1993-2000 Rear Subframe Bushes. RED Polyurethane

With all this experience shame you couldn t develop a Subaru subframe bush that fits

Crack on lad




New message from: polytorq (814)

Well Porsche are doing ok with my engine mounts. You missed the chance of rebushing your car for next to nothing. I will go on the forum and select someone for a full set for free now. Watch this space. Like I say. You don't know who you are talking to. That's why you run around in a Scoobie and I drive a Bentley

On 22/09/2016, 01:35, timmyrogerson wrote:

timmyrogerson has sent a question about item #322237541726, ending on 22-Sep-16 08:13:00 BST - Subaru Impreza inc WRX & STI 1993-2000 Rear Subframe Bushes. RED Polyurethane

No wonder they aren t doing well anymore

Night night


And so on, it got late so the replies were just humourous after a while, was good fun tho ha ha




</h3>
Old 24 September 2016, 08:37 PM
  #58  
mickywrx
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What a muppet.
Old 24 September 2016, 08:56 PM
  #59  
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We should have a dedicated thread for companies to avoid
Old 27 September 2016, 12:00 PM
  #60  
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I emailed SuperPro asking if there was a specific reason why they made a bush for every other part of the suspension but the subframe. Just got this reply back...

Good Morning Paul

Thank you for your enquiry, I have asked the Rand D team about these bushes. Simply when we had a car in for R and D they were not deemed a bushing that would be in high demand due to the nature of labour costings to replace them. We are now going to look into these and to get them introduced to our range.

I will not be able to give you a time scale on how long this will be, due to the nature of gathering dimensions getting parts made for test and then testing them. This is a rigorous process that is adhered to all bushings produced by SuperPro so we can eliminate any failure / manufacturing issues before they are sold and fitted to vehicles on the road.

I hope this will not deter you from choosing SuperPro for your Suspension Part requirements.

Please feel free to call or email me to discuss further if necessary.

Best Regards

Nick Beal
Internal Sales Manager
SuperPro Europe Ltd
Tel +44(0)1823 690281
Fax +44(0)1823 698109
Web: www.superpro.eu.com
Hopefully they will have something available in the not too distant future? For the moment I've fitted the FloFlex bushes having modified them all to be the same size but I'm not convinced they will last that long...


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