Steering Shake 390 se

[pault0007]

Hi,I wonder if anyone has any suggestions which would pin point where the steering shake on my 390se is coming from.
I have already had the wheels balanced and changed the front tie bar bushes but before i move on and change the drop link bushes i want to be sure that this isnt something sinister.

The shaking starts at around 50 mph and doesnt dissappear as you some times find you can drive through it, it gets noticably worse by 80 mph its bad enough to cause you to slow down.

The car has just been MOT'd and nothing was detected in the test.

I do have a set of 17 inch non standard alloys on the car and wondered if this may be affecting handling in some way as the alloys don't have hub locators just sit on the studs.

Any suggestions would be greatfully received.

Regards Paul

[James MK]

Wouldn't be coming from the bulkhead bush would it? On my '83 model there was just a nylon bush supporting the column as it passed through, it allowed a lot of shudder particularly on bumpy roads. I had it replaced with a solid looking steel bearing which instantly made the steering feel steadier. This wouldn't be the cause of the vibrations you're feeling, but would emphasise them.

[pault0007]

Thank's James that's something to considder.

Cheers Paul

[Jack Valiant]

You have mail - hope it helps

Chris

[Solitude]

Used to get it on an old spitfire and it was the UJ's ???
Nicknamed the car "shudder"

[blaineuk]

i would think it is coming from the wheels, you need a set of spigot rings to locate the wheels right.

[adam quantrill]

I agree - spigot rings. They can be hard to come by in the right size, I had a turning tool made up for mine so I can use bigger ones and turn them down to cerbera wheel size.

Also check the tyre pressures aren't too low.

[GV]

I had that - I sussed it was the front coilover mounts so I changed them and the problem went away...