Faulty New Diff Bush(S) = Diff Damage?

[Spoony]

Seem to be going OK at the moment. I'm doing a skidpan day on the 10th, so we'll see after that haha.

[Ralph Wiggum]

Im running another set of SPF1348k's (the comfort style with the full "turbulator" voids) No problems so far and I have given them a fair belting on a couple of cruises. I have the new trial bushes but will wait until the current set fail (or at least wait a few months if they dont seem to be failing) as I really dont feel like dropping the arse end out again.

i dont think it can be stressed enough for both longevity of the bush and minimal increase in NVH how important it is too set the bushes at the correct depth in the subframe. The right depth will also reduce the angle on the CV's

Your best option install wise is to use a fulcrum suspension outlet (such as Wholesale Suspension Products in Sydney) as they have the right tools and Info too do it correct.

You can set them up correctly at home but you need too take some measurements from the installed position of the old bushes and transfer this too the new ones once they are pressed in. You'll need too do a little maths as the bushes arent the same depth l/r or the same depth as the stock bushes.

[turbotrana]

It seems that no one has addressed a proper solution for the diff bush. Whilst you can put a harder compound material in the bush, it really does not solve the problem. It just means the rear bolt gets more of a hiding.

My solution is not easy and am not sure it would totally solve the problem or create a new problem but I would weld in a second bush along side the original bush.

It would require a completely new hat welded up with locations for two bush bolts, the second bolt about 10cm to the drivers side of the original bolt. On the cradle you would weld in plates and tube to allow a second bush to be located next to the original bush.

Now I have seen a few diff setups and most seem to have a 3 point mounting. I guess the single point is to allow for some twisting of the diff but am not totally sure. I have also seen 4 point mounting of the diff.

Basically just convert it to a 4 point mounting with a bit of welding and maybe solve the problem once and forever. There is plenty of room under there.

If the FGseries 2 has not addressed the diff then this is something I would consider doing down the track.

[1600dave]

Yeah the place I went to are a fulcrum dealer so I would assume would have the correct equipment. He seemed to know what he was on about and had the bushes in stock.

Is there much difference between the comfort ones, and the trial ones they've given you?

Ford are probably making too much money from not fixing the problem. Same thing with turbo's coming loose.

[Ralph Wiggum]

Yeah the new trail bush only has two voids in it that are orientated vertically so there is maximum material under in the plane that cops all the torque loading

[wa g6et]

Do you know the outcome with the failed bush? Was there a manufacturing issue? Or was it fitment.

[Spoony]

^^ mine? As far as I was told, faulty batch of bushes, steel sleeve not glued properly to the bush.

[wa g6et]

  On 06/12/2011 at 1:20 AM, Spoony said:

^^ mine? As far as I was told, faulty batch of bushes, steel sleeve not glued properly to the bush.

Oh crap, I hope mine are ok and not in this batch.. A guy here in WA just had his centre superpro comfort bush let go on the weekend, from the photos looks exactly the same.

I rang Fulcrum and there are no batch markings on the bushes, so it will be a bit hit and miss finding the faulty ones then.

When did you have yours done? Mine was fitted here in Perth in July and then I guess the stock may have been sitting for a little while too.

Edited 06/12/11 01:52 AM by wa g6et

[senna_T]

Roof had the comfort bush in his car, I think its done ok considering he is running big horsepower - but in saying that, yes you can get faulty bushes..

[Corzza]

Great conversation here guys.

As mentioned to Senna several months ago I am due for rear bushes.

Miguel who is on this forum and who has a FG F6 with 420+ RWKW went to go see Senna and the team and Wholesale suspension to sort his rear bushes out and they fitted up some Super-pro bushes

at very good price. Miguel can not speak highly enough of the difference these made to his F6. So I guess it can can all come down to who installs them