was just wondering if it really critical that you cut the bumb stop on a scion tc when installing new springs (in this case, tein s techs).? It is the little rubber part at the top of the shock/strut. Me and my dad put them on and then noticed the little instructions in the box saying that you need to cut the bump stop. I hope this makes sense and if any of you know anything about it let me know. I did search for it, but didnt find much. Thanks guys

 

any help

 

i dont know if this is a noob question....but i just want to know if i have to tear everything apart again to shorten them

 

when i had my TRD shocks and TEIN springs, i cut the bump stop slightly

 

i cut mine when i installed my TRD springs. i would cut them

 

what difference does it really make?...

 

ride quality i believe

 

The limit of shock/strut travel is cushioned with the foamy rubber "bump stop" to minimize damage to the car and possible loss of control.

Because, the car is lowered, cutting the stop keeps the car from hitting it too easily since there's less travel.
Since most lowering springs are stiffer than stock, there's less chance of hitting them, but it's a good idea to trim them to insure no unwanted bump steer...
Hopefully, this makes sense...

 

Cut mine in half when I installed my Tein H-Tech's

Before we cut..

 

The instructions on mine said to cut approx. 25mm
This is about 1 inch so I cut the first lump off mine...

 

question though if you didnt cut them as much as it said would you keep your struts longer since they are not going down as far?

 

It's not the "going down" part that's bad.
Most lowering springs have a stiffer spring rate. That means it's gonna have a shorter travel than stock. Usually, this will cause the seal to run warmer and wear on a shorter portion of the shaft.
Someone recently posted a picture of a worn strut with a discolored shaft due to heating. This is how it "blew out"...
I recommend a spring with a "close to stock" spring rate. The Tein H-tech and the Tanabe NF are the best, in my opinion.
This is, of course, for a "daily driver". If you plan on competing...coil-overs are the best way to go.

 

The reason you cut the stop is to avoid a premature bottoming out on a larger than normal bump/dip.
It's pretty hard to control a car that's riding on the bump stops.

 

Concerning cutting the rubber thingy, I installed my Tein S, well my friends did it and the reason it wasn't cutt because they said I dont need to, so is there something bad with not cutting the rubber thingy?

 

i dont think it makes a huge difference....from what i have gathered. I just put s techs on mine too. Its an awesome drop! later

 

cut or not cut.. lol

 

Listen to what he says....

 

Here is the simple reason for cutting the bump stops. When you put drop springs in the car you take away some of the shock travel (s techs= 2" drop something like 13/4'' shock travel lost ) i think that is the measument. To gain some of that travel back you cut the bump stop. You will notice in the tein factory instructions for H's you cut less, 1.5" H's drop as opposed to a 2" S's drop. The cutting ensure's that you have a nice smooth ride even on a harsh bump. instead of the suspension compressing and hitting that bump stop on every little bump you drive over because of the reduced shock travel, giving you that bouncy ride that nobody wants, and possibly creating a dangerous driving condition.

 

Don't cut them... i don't have a problem with them and tucson doesn't have great roads... the ride quality is still the same from stock....... Have fun with whateva you decide....................................................................................................