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[mrgreen]

Hi all i finally registered my car for the road today and took it out for a good test drive but i have a problem, i installed irmscher springs and bilstein b4's and in the curvies they are great but over pot holes there is just a thud what could that be?i don't think it's the drop arms as it seems to loud for that and the car feels like it has no suspension when this happens! also when backing off i get a slight vibration through the car but under load it's fine, if anyone has any ideas i would be as always much appreciative,
many thanks,
Rich.

[dbug]

Drop links cheap and easy to fit - best way to eliminate these as not always obvious when knackered 

[mrgreen]

yes i had done my front ones but this is not really a clatter more a bang when i hit a pot hole which sounds like there's no suspension at all in the car!! but it rides well in the curves which i dont understand? i take it the rear drop links are connected to a sway bar could it be sway arm bushes knackered and the sway arm hitting the car somewhere? it's a bugger as it's going to get a four wheel set up on friday and i won't have time to check it before it goes.

[mrgreen]

anyone else any ideas

[mrgreen]

o.k i still have this problem and it's driving me mad could this be something to do with the way the back shocks were installed as i have been reading that some shocks need special washers to fix thumping over bumps?? anyone ever heard of this?

[feeutfo]

Sumats loose somewhere. My front top shock mounts came loose due to lack of a 24 mill ring spanner. Other than that re trace steps. Have the rear top shock mounts been assembled in the correct order? Should get new mounts with the rear shocks?

Did you have a go at setting camber to something sensible?(front)

[feeutfo]

Also wonder if the diff bush bolts are tight? Assuming this has happened after the work done, and was not present before?

[mrgreen]

Sumats loose somewhere. My front top shock mounts came loose due to lack of a 24 mill ring spanner. Other than that re trace steps. Have the rear top shock mounts been assembled in the correct order? Should get new mounts with the rear shocks?

Did you have a go at setting camber to something sensible?(front)

now this is where i think the noise is coming from! it certainly sounds like it anyway as when you hit a bump where the whell actually drops it bangs on the return can you tell me the correct order so i can check! (first timer for shocks!) thanks Chris i knew you'd be along sooner or later to point me in the right direction, p.s i didn't undo the diff bolts to put the  springs in and i didn't really drive the car before but my father in law did and he was suprised to hear this banging so i don't think it was there before.

[feeutfo]

http://www.omegaowners.com/forum/YaBB.pl?num=1208460516/0

[mrgreen]

sorry to go on about this but today i got the car checked by a mechanic and he said it looked fine all was tight and secure, so i took one shock off and on doing this noticed the sleeve which the bolt goes through on the bottem is larger than the bolt which goes through it i'm geussing this is normal but could it be the cup washer rubber is worn causing sloppiness in the bottom of the shock or am i just not used to irmscher springs being so hard that it shakes the back of the car like it's got no suspension!

[feeutfo]

sorry to go on about this but today i got the car checked by a mechanic and he said it looked fine all was tight and secure, so i took one shock off and on doing this noticed the sleeve which the bolt goes through on the bottem is larger than the bolt which goes through it i'm geussing this is normal but could it be the cup washer rubber is worn causing sloppiness in the bottom of the shock or am i just not used to irmscher springs being so hard that it shakes the back of the car like it's got no suspension!

Not sure I fully understand that tbh

If you have irmscher springs and b4 shocks all round then they should be same front and back. If there is a noise at the back only then there's a problem. Are the shocks not new?

[mrgreen]

yes the shocks are new what i mean is the metal sleeve on the bottom of the shock(which sits a little into the hub) which the bolt goes through  is larger in diameter than the bolt, but i geuss it's o.k as the bit which sits into the hub is the correct size. i geuss the estate springs are rated harder than saloon springs i am wondering if that's the problem, too hard, also while you're on Chris are michelin primacy a known tramliner because mine seem to be!, thanks for the replies Chris,
rich.

[feeutfo]

Is it worth trying the old gm top shock mounts?  :-/  Bilstein ones are harder.

Primacy not known for tram lining. But they all get worse as they wear. How much tread left?

[mrgreen]

Is it worth trying the old gm top shock mounts?  :-/  Bilstein ones are harder.

Primacy not known for tram lining. But they all get worse as they wear. How much tread left?

a good 6-7mm i think and as for trying the old top mounts me being an idiot kept everything form the change except the rear shocks why i don't know it's not like me to throw anything away but i'm going to take the shock back out and make sure it's seated properly in the hole

[RobG]

yes the shocks are new what i mean is the metal sleeve on the bottom of the shock(which sits a little into the hub) which the bolt goes through  is larger in diameter than the bolt, but i geuss it's o.k as the bit which sits into the hub is the correct size. i geuss the estate springs are rated harder than saloon springs i am wondering if that's the problem, too hard, also while you're on Chris are michelin primacy a known tramliner because mine seem to be!, thanks for the replies Chris,
rich.

If it was the same diameter or smaller, the bolt wouldn`t go through