0wn3r wrote:What suspension do you run anyways? (And don't say Ohlins) Wait, don't you have just a shock/spring combo?
Currently I've got Koni double adjustable race shocks up front, with standard yellows in back while the housings for my 8610's are being built. I run Ground Control perches with Eibach ERS springs. So, basically I run "just a shock/spring combo". It just happens that the "shocks" I'm running are higher quality than any of the JDM dampers.
Quote »I had the impression Stance GR+ Pro was one of the better coilovers in the crowd, but you make it sound terrible [/quote]I'm sorry if I come off as an arrogant *******, but I'm just irritated with the amount of times I've spelt out the facts to people only to be ignored by someone who goes with the "I want to slam my car to the frame"-choice but tries to pass it off their decision performance based. So, once again, I apologize for how I may have sounded.
Here's the honest truth:I wanted to give Stance a chance with their 3-way adjustable GR3's. I relayed a few e-mails with them and some people who run GR3's, as well as a bunch of guys that know their ****, plus some well-known suspension guru's in the 240sx world (of which some might even go so far as to include me). I even put some thought into Dennis Grant's writeup, even after hearing him bash the STS class (and btw, I was the CNAC STS class champion that year).
Here's my conclusion:I overlayed the plots of whatever I could find, and searched around for the opinions of real racers. At the time, Sasha from Sequence-Garage was just installing the GR3's, so I had a little feedback from him. Tim from Theory In Practice was still in the theory stage for his Bilsteins, and the Bilsteins I had seen on 240sxracing.com seemed hard to come by (although they're the same as the ones Tim is using as a base). I looked up as much as I could on dampers under $2000 (my damper budget at the time), from Tein to Zeal to making custom brackets for Evo/Sti versions of Ohlins Sports and Bilstein PSS9's. I was quoted at $5500 for Koni 28's, and hadn't looked into the 86-series at the time. Moton Club-sports, while not listed for the 240sx, were priced at $3700 for similar setups (strut front, eyelet rear).
Here's what I found along the way: The D2 dyno plots overlayed with the Stance GR+ plots almost EXACTLY on the compression stroke. The rebound stroke had the same curve (mostly linear) with a narrower range. Regardless, they were both nearly triple what they should be at the 10 in/sec range (bumps). It didn't inspire confidence at all for the GR3's, which I had come to assume were the same as GR+ with a simple line from the fill valve to a remote canister (with presumeably the same floater setup inside, and a bleeder for compression adjustment). After seeing the disassembled Silkroads, the dyno plots from the Stance/ D2/ Ksport shocks, and feedback from some gear heads who (rightly so) weren't impressed at all by the shock dynos, I was STILL on the fence with the GR3's, thinking I could machine my own floater, bleeder, and shim stack for the main piston. During this time I was playing with the N2 pressures on my D2's (which I had regretably gone to like a n00b from perfectly fine Koni Yellows, some amount of years ago), since D2 has 3-way adjustable shocks very similar to Stance in Europe (and this should be your final clue that Stance/KSport/D2 all get their dampers from a common source).
Somewhere along the line, I drove a bunch of cars, from Koni Yellows, to triple-adjustable Ohlins, to revalved Bilsteins. It didn't matter which, as they were ALL better than Megan/ D2/ Ksport, which all post similar dyno plots to Stance. Even off-the-shelf Koni Yellows, which are a "sport shock", felt more planted with higher springrates on a lighter car (Datsun 510).
It was about then that I hooked up with veilside180sx on FreshAlloy for housings for 8611's. I had originally found the Koni 8611's while browsing through some catalogs, and somehow got the idea to mount them inside the D2 bodies as an insert. After looking them up, there was a lot of positive feedback on them, especially the newer RACE valved ones with a lot more digression in the force/velocity curve. After liking what I saw, and being quoted at just under $2000 for the full setup, I figured it was the best deal for a budget race setup. Now I'm running 8611's up front, and 8610's (same thing but only rebound adjustable, and a bit cheaper) are being built for the back.
Now, with that explained: I learned a lot about dampers along the way. At first, I was all about preloading the front, to bias roll to the rear after having rear wheel lift issues for a while. You've gotta figure, if suspension travel is limited up front, the rear should stay planted, right? Nope. You just end up with quirky handling. With the piston so far up, the volume ratio in the damper body is quite a bit off. As the piston travels, you get a screwy volume ratio change to match. As such, it seems as though you get screwy handling. However, the coilover "companies" still tell you to run some preload, as if the spring will unseat itself. It's odd though, as they're ALL overdamped at high piston velocities. I'd have to wonder if they're so underdamped at low velocites that the spring somehow unseats itself under normal driving conditons. My 600lb (about 11kg) springs don't seem to, and there's a good inch or two of droop travel with the spring completely loose. Even the standard Koni Yellows in back, which have a good 3 - 4" of completely unloaded droop, are fine (450lb springs, about 8kg).
So, to re-iterate:-I have "just a shock/spring combo" that costs as much as Stance 3-ways.-I still believe Stance = D2 = Ksport = Megan (possibly with different N2 pressures disguised as "valving")-The more you research dampers, the further away you go from "JDM"-If all you care about is slamming your car, you only have to worry about picking the one with colors you like most.