Knocking noise from the near side suspension

Radders · 02-11-2009, 11:41 PM

following a trackday on saturday the M3 has developed a knocking noise from the front near side suspension. Suspect we hit a curb too hard, anyway jacked it up this evening and when i lift the hub the shock is moving about 2 mil at the top (the nut at the top of the shock, under the top mount) i removed the suspension and tightened this nut up which solved the problem until i drove it again the knock returned. i am guessing we have sheared two threads on the shock? Need to solve it quickly as I have a trackday at oulton on wednesday.

anyone got any experience with this happening?

forgot to add, its a KW suspension setup

shane@mbtech · 03-11-2009, 12:09 AM

Quote:

Originally Posted by Radders

following a trackday on saturday the M3 has developed a knocking noise from the front near side suspension. Suspect we hit a curb too hard, anyway jacked it up this evening and when i lift the hub the shock is moving about 2 mil at the top (the nut at the top of the shock, under the top mount) i removed the suspension and tightened this nut up which solved the problem until i drove it again the knock returned. i am guessing we have sheared two threads on the shock? Need to solve it quickly as I have a trackday at oulton on wednesday.

anyone got any experience with this happening?

forgot to add, its a KW suspension setup

Sounds like your shock is goosed, the top mounts are interchangeable, it could be your top mount though, fire it over to me mark ill have a look for you.

,

Ive fitted, removed, refitted my suspension between my csl and m3 about 50 times over the last few weeks i reckon i could do it in my sleep

We may be able to re-cut the thread.

Radders · 03-11-2009, 09:20 AM

Quote:

Originally Posted by lawsy

Sounds like your shock is goosed, the top mounts are interchangeable, it could be your top mount though, fire it over to me mark ill have a look for you.

,

Ive fitted, removed, refitted my suspension between my csl and m3 about 50 times over the last few weeks i reckon i could do it in my sleep

We may be able to re-cut the thread.

very kind of you mate, where are you?

i was thinking of putting a bigger nut on it, this could hold more thread and solve the problem?

_Nathan_ · 03-11-2009, 09:24 AM

Speak to KW - the dampers aren't exactly old!

Radders · 03-11-2009, 09:28 AM

Quote:

Originally Posted by _Nathan_

Speak to KW - the dampers aren't exactly old!

less than a year old i think.

_Nathan_ · 03-11-2009, 09:46 AM

Fitted in June.

Radders · 03-11-2009, 10:10 AM

Quote:

Originally Posted by _Nathan_

Fitted in June.

is it possible to contact KW directly about this? have no idea who supplied them, will PM john and see if has any info.

_Nathan_ · 03-11-2009, 10:12 AM

I'm going on the fact that there are pictures of them being fitted mid race meet so assume that they were supplied by John?There may not be a a warranty but you could look to them for some good will if they are indeed broken (need to confirm that first).

Radders · 03-11-2009, 10:51 AM

a picture of the top mount, the nut indicated by the yellow arrow is what keeps coming loose allowing the movement.

**shimmy** · 03-11-2009, 11:17 AM

not sure if same with KW but dont you normally see two nuts on top of the strutts to lock them down?

02-11-2009, 11:41 PM	#1
Radders S5 - Full Throttle Join Date: Jan 2009 Location: Merseyside Posts: 371 Casino cash: $551	Knocking noise from the near side suspension following a trackday on saturday the M3 has developed a knocking noise from the front near side suspension. Suspect we hit a curb too hard, anyway jacked it up this evening and when i lift the hub the shock is moving about 2 mil at the top (the nut at the top of the shock, under the top mount) i removed the suspension and tightened this nut up which solved the problem until i drove it again the knock returned. i am guessing we have sheared two threads on the shock? Need to solve it quickly as I have a trackday at oulton on wednesday. anyone got any experience with this happening? forgot to add, its a KW suspension setup __________________ the CSL, better that a 70k Porsche!

03-11-2009, 09:24 AM	#4
_Nathan_ Driving it like I nicked it Join Date: Sep 2008 Posts: 2,099 Casino cash: $13060	Speak to KW - the dampers aren't exactly old!

03-11-2009, 09:46 AM	#6
_Nathan_ Driving it like I nicked it Join Date: Sep 2008 Posts: 2,099 Casino cash: $13060	Fitted in June.

03-11-2009, 10:12 AM	#8
_Nathan_ Driving it like I nicked it Join Date: Sep 2008 Posts: 2,099 Casino cash: $13060	I'm going on the fact that there are pictures of them being fitted mid race meet so assume that they were supplied by John?There may not be a a warranty but you could look to them for some good will if they are indeed broken (need to confirm that first).

03-11-2009, 11:17 AM	#10
shimmy CSL Register Uber-poster! Join Date: Apr 2008 Location: Uk Posts: 14,646 Casino cash: $43909	not sure if same with KW but dont you normally see two nuts on top of the strutts to lock them down?