bump stops
 

I have got a 04sti and a lot of the roads in my area have got a lot of bumps & dips,which make the car to hit the bump stops very hard sometimes
Will this hurt anything or is is ok.
cheers Lee

The stops are there to save the suspension from damage.

Just how hard are you driving over the bumps to reach the stops?!
If the suspension has been lowered thaen you might get to the bump postiion more frequently.

Graham

I have got the prodrive springs fitted.I have driven other cars at the same speed over this road with no problems.So will i have to slow down to save the suspenion or is it ok?
Lee

Got to watch your speed and watch your alloys! you can buckle them driving too fast over bumps! I've got same springs fitted.

BTW bump stops are made by powerstation for classics, we dont need them on newage.

Lee, it sounds like you'd be better served by the standard springs.

Lowering springs do what they say on the tin but they don't upgrade the rate sufficient to compensate for the loss of bump-travel due to lowering. Unfortunately a big share of the market is folks who want to lower for looks and maybe want a firmer feeling on the roundabouts but aren't bothered about real performance on rough roads.

Modern bumpstops are soft polyurethane foam and you don't feel when the suspension hits them as they are so progressive. When you do feel a heavy thud on compression it could be when the bump-stops are so compressed that they bind solid or it could be that something else in the suspension is binding. Either way its not good, you either need to accept the lowered-looks but limited performance of these springs, or go back to the originals or find something that performs well on '3-D' driving while still lowering, and thats not easy on a budget.

It could also be that your shocks are tired - the KYBs seem to fail first on compression but I'd hope that an '02 would still be OK.

What on earth gave you that idea?

<edit> Penny's dropped - you're thinking of the bump-steer adjustment. Quite a different thing :)

Although Duncan Prodrive springs for MY04 STI include new shorter and harder bump stops that allow same suspension travel as with the factory springs...so why he hits more often the bumpstops now with the harder springs?
Or are they audible instead of the soft factory bump stops?
JIM

Interesting point Jim.

Are you sure they give the same bump travel? I'd expect the standard stops to compress down to around 20-25mm but if the springs drop 30mm then even removing the stops altogether (very bad idea) you would still have less bump travel.

The Prodrive springs lower the car front about 25mm and the new bump stops are more or less the same shorter, I have them in my car with Spec C struts!
I wonder also what could be in this case!

Thanks for the replys
Its the rear that does it the most,could it be the shocks as some people on here have had problems with them on the newage sti?
Lee

This is possible Lee!