I own a set of the Tein SRC, and cant figure out how I could adjust the collared shock body without disconnecting and removing the canister line, so
while technically the body height is adjustable, it's no easy task.

 

I can adjust the height on my SRC's in less than a minute once I have the wheel off. No need to disconnect the canister line, it will stay in place while the rest of the shock body rotates. Considering how short the shock is, I would keep the preload set at what TEIN recommends, and adjust the ride height this way. That said, I am wondering if the TEIN-recommended preload is too much, as I am not using the bumpstops at all, and I am running out of droop travel. But this is from testing at Buttonwillow, only.

 

Yes, at the spring perch, but not the body of the shock, so the Eibach Pro R2s are effectively no different to raise and lower the car than the SRC's.

 

Maybe you havent tinkered around with it enough but SRCs do not require you to disconnet the line.
SRCs are definitely not like the R2s

 

Right on. I will tinker further.
I'm only blathering on because I own a set of each, and after a few more trackdays, I'm going to pull the SRC's, install the Eibach's and try to decide which I like better, and which are faster.

 

No worries about blathering ….but yeah, at some point Id like to get my hands on these R2s and run them too.

 

Ya, me too!

 

In order to adjust the preload (i.e. raise or lower ride height by adjusting the spring perch), you break loose the two spring seat locks from each other and raise or lower the upper spring seat lock. Once you are happy with the height, you tighten the two spring seat locks against each other. This is the only way you can adjust the ride height of the R2's. You can see that the more you lower the car, the less compression travel you have left.

In order to adjust the shock length (i.e. raise or lower the ride height without affecting preload), you break loose the shock seat lock at the very bottom with the same spanner wrench. Then you rotate the entire shock body by rotating the upper and lower spring seat locks together, which will lengthen or shorten the entire shock assembly length. The canister line does not need to be disconnected when doing this, it will swivel to accommodate the rotation of the shock. Do not break loose the upper and lower spring seat locks from each other when doing this. When you are done, tighten the shock seat lock.

Here is the installation manual for the TEIN SRC for the S2000, which gives you suggested ride height and preload settings. I thought the TEIN-recommended ride height was a bit too low, so I would recommend adding maybe 10 mm all around to what TEIN recommends.

http://www.tein.com/tech_info/inst/8h64u.pdf

Here is an excerpt from that manual, which I annotated to show you what I mean by the upper and lower spring seat locks and the shock seat lock:



The shock seat lock allows you to adjust the length of the entire shock assembly allowing you to raise or lower the height of the car without affecting preload. You can adjust exactly how much compression and rebound travel you want independent of the ride height. The R2 does not have this feature.

Hopefully this clears up any confusion.

 

BTW, if you are planning on doing any back-to-back testing of the SRC and the R2, I would love to tag along.

I think it would be relatively straightforward to replace all four coilovers at the track, and adjust the ride heights so that you don't have to redo the cornerbalance or alignment.

 

I got you, thanks, I had no clue that the canister line swivels under the body.
My next track day will be my first at Big Willow on June 2nd with SV. Sadly I'll be out of town for Streets on the 12th.
I'm always happy to take a passenger, I'm going for every Buttonwillow day I can this year so plenty of opportunity for you to feel the two different shocks.

As far as swapping the shocks goes, that's my plan, to set the ride height equal between the two sets so that my corner balance and alignment settings can remain unchanged.