I posted this question in my other thread, but I wasn't sure if it would get answered since the title was complete different haha.

Anyways, my friend and I just recently installed Tein coilovers + EDFC into my car. Here are pictures from the install diagram:





If distance A is lower than the recommended 326mm, that means that the stroke of the shock has been reduced, right? With everything else the same, would this result in a harsher ride? Because when we put in the shock, I don't believe that it was exactly 326mm (I think it was about 317mm and I just let it slide, I'm such a dumbass). Anyways, the reason why I ask is that even when I'm riding around on the softest settings, I get nauseous enough afterwards to feel like I wanna throw up . Haha maybe not that bad, but I definitely get queasy. I'm wondering if it's just because of bad LA roads or if it's because the rear shock settings are off so that the spring rates no longer match the shock stroke (resulting in a nasty ride).

In any case, I'm definitely making sure that the distance will be correct this weekend. I'm just wondering if that's the reason why the ride is harsh (on 16, the car is definitely stiffer than stock, and not just "a tad bit stiffer" like most people say).

Thanks again for all your help guys, I really appreciate it!

 

depends where you are adjusting height. You can either do it at the lower spring perch or the lower mounting bracket. Usually you want to start with minimal preload and set your main rideheight via the lower bracket - this maintains stroke. From there, you can dial in a bit more preload to suit your driving style, and do small rideheight changes (up to around 1/2 inch or so). For changes bigger than around 1'/2 inch, go back to the lower bracket, rinse, repeat.

Also, check your tire pressures.......very often, this is the culprit as well

 

What do you mean by starting with minimal preload, or dialing in a bit more preload?

And when you say that I can then do small ride height changes up to about a half inch or so, do you mean at the lower spring perch after I've set the main rideheight with the lower bracket?

And thanks for the tip, I'll definitely check my tire pressures too.

 

preload is the amount you compress the spring. The more you compress the spring (which means adjusting the spring perch to make the spring "shorter", the less travel you will have since you are reducing the amount the spring can compress. To start, you want as little preload as possible (there should be specs in the instructions for preload too), and dial it up from there.

Large rideheight adjustments (ie setting your initial rideheight), are done via the lower mounting perch - this lets you alter rideheight without affecting preload, thus without affecting stroke.

Small rideheight changes can be done via preload adjustment aka the spring perch.

Adam

 

Thanks for the explanation, it definitely helps . In terms of what I've read, if the shock stroke is longer than the correct default, than you get a bit of floating.. but if the stroke is too short, than you get a harsher ride. Is that correct?

 

more or less yes thats the case. Now of course your dampers are adjustable, which introduces another level of complexity to it

Takes some trial and error to get it to where you want it to be, but its worth it!

 

Definitely, I guess that's why I got coilovers to begin with . Thanks again for all the help!