Advice needed on noise from new Spax damper and mounting

[gordini5]

After fitting new Spax G830 shocks and new mounting brackets there was low level noise transmitted on the near side front.

On taking it apart I think I've found the problem?

The new bracket and damper arrangement gives very little clearance between the damper shoulder and bracket. There is metal to metal contact evident where the paint has been damaged on both surfaces.

The wall of the poly bush is only 3mm, is it the right way then to grind away up to 3mm of the mounting plate?

New damper and mount

20180722_165532.jpg (93.27 KiB) Viewed 380 times

[b.c.flat hat]

Hi Gordini, the bushes in Spax do suffer from squishing quite quickly in service but as the loading is downwards on the lower mount and upwards on the top one, metal can be removed to provide clearance. It's not a very elegant engineering solution but does work ok.

[scimjim]

Are you sure the 830 is a front damper? A quick google seems to show it listed as rear.

Either way, drop Tony Shakeshaft (Spax tech director and ex GTE owner) an email.

[gordini5]

Thanks both for helpful advice Now back from holidays I had a chance to contact Spax technical. I didn't get Tony Shakeshaft but they had nothing else to add except that they had not been made aware of such a problem before.

You are right Jim that the front are ref: G829. I found navigating damper and bush selection a maze of options and reference numbers but I think I'm getting to the end of the puzzle

So it's out with the grinder then.

It's maybe worth noting that the 25 year old Spax G462 that I am replacing had the larger cotton reel type bush and so no such clearance problem. I understand from Spax that they changed the design as these larger bushes were deforming.