goffemannen

I've compared the Superpro and Powerflex bushes. And one thing i saw was different is the shape of the rear differential support bracket mount bush. The shape on the Superpo's isn't round. It has edges witch i think looks odd and i can't figure out why the look like that. The whole the go into is round, so why not make the bushing round?



If you look at the powerflex bushing it's round.




Do anyone know why superpro has done like they have? And witch one of the bushings should I pick? My instinct says, buy the powerflex bushing.

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SuperPro

Hello Everyone

We’ve just been been told about this post and I wanted to add a response if that’s OK.

Just to give a quick rundown of the shaping design of the SuperPro rear differential support bracket mount bush, the design is based on the OEM bushing, which has voiding in the design. The voiding is used to reduce or remove NVH or Noise Vibration Harshness. As an engine runs it moves, creating vibration. A solid bushing unit makes full contact and will ‘rub’ without the ability to allow subtle movement, as with voiding, this can be transferred into noise and vibration.

While the SuperPro is voided and allows subtle movement it does not allow as much, and this allows more power to able to be put down for better traction.

As well, the SuperPro unit is designed as a one piece unit to make sure it gets correctly fitted located and to limit its ability to become dislodged.

I hope this information helps and let us know if we can help further

goffemannen

thanks for a good answer.

Handling wise if i don't care about NVH. Witch is the best. Isn't a solid bushing better for handling as it has less flex?

SuperPro

Hi Goffemannen

Thank you for the reply.

If the aim was to minimise movement then solid aluminium or nylon would be best

Our bushes are designed to isolate against NVH because in a normal road use situation the noise would become extreme and a lack of compliance is not actually that good for handling.

Even in a racing situation you could probably get away with a solid bush but the vibration could cause damage to the diff mount housing and make for unpredictable behaviour on anything but a perfect surface.

In our view, compliance and deflection needs to be managed, but not eliminated.

Hope this helps

goffemannen

Okey. Thanks, you've been very helpful.