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  • Moar Powar Babeh
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  • Member For: 19y 9m 21d
  • Gender: Male
  • Location: Perth

I would if I was running a factory setup. 

 

But given the ims unit runs rubber bushes and channels the torque reaction from the diff into the two rear mounts I don't see the need for poly in the front. 

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  • Dropping a turd
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  • Member For: 17y 8m 17d
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  • Location: Perth

I know the BAs run a factory solid front side diff bush.  Will these fit BFas well. To me those voids are Inbuilt cracks just waiting to tear 

Edited by arronm
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  • Member For: 13y 11m 23d

Stiffness equals vibration or noise possibly.

There was a guy on facebook the other day that still had axle tramp with this kit cause he used standard Ford front bushes.

The front needs to be as stiff as the rear to stop the diff rotating both ways under power.

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  • Member For: 17y 7m 20d
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  • Location: Probably above atmospheric pressure

I have felt a small amount of tramp a couple of times with mine, when it's wet and it's on the limit of grip.  Pretty sure it was tramp anyway...was that rapid hitting feeling coming from the rear.

 

I had brand new stock bushes put in there after the mechanic requested that to ensure precise fitment.  My kings/koni suspension is probably coming up to about 175,000km old though so not sure if that would be contributing.

  • Moar Powar Babeh
  • Lifetime Members
  • Member For: 19y 9m 21d
  • Gender: Male
  • Location: Perth
20 minutes ago, gaz097 said:

Stiffness equals vibration or noise possibly.

There was a guy on facebook the other day that still had axle tramp with this kit cause he used standard Ford front bushes.

The front needs to be as stiff as the rear to stop the diff rotating both ways under power.

What shocks/spring/tyres/power level was he running? 

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  • Member For: 19y 1m 19d
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  • Location: Central Queensland

I have the CAT600 front bushes in mine. Absolutely no difference in road noise over the standard bushes. Personally, I think that having the stiffer front bushes are a benefit  and provide torsional stiffness in the IRS frame. My like the aftermarket engine mounts benefit the front end. 

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