Relentless Autosports Coilover package...

Scott @ RA

Sorry Chris, and not that it matters that much or is a big deal, but as some may not know... I talk to Pete (the owner, operator, and manager of BC Racing NA) at least couple times a week, not to mention the many daily text messages. We are good friends and work on projects together. I am also the consultant, director, and driver of their Time Attack cars and race cars (we also build the cars engines).

I asked him in a text message today if the 370Z ER series coilovers EVER came with the 12K front and the 10K rear spring rates as the default (off the shelf).
He replied.......
"No, we did sell many 12/10's ER's (ever since you suggested it), but that is not how they came and has never been the default spring rates. The 350Z, G35, 370Z, G37 have always had the 10K 8K spring rates as the default for the BR's as well as the ER's"

ChrisSlicks

Thanks for the follow up Scott, I had a feeling you were in pretty tight with Pete. I think I just had some old or mis-information from when the ER prototype came out for the 370Z. One of the prototypes was test fitted on Mike Bonnani's car, and at the time he was told the ER would be shipping with 12K/10K springs. But .. that was before it went into production. The UK website lists the spring rates as 10K/8K like you said.

As always, appreciate your support developing for this car as well as the diligence to the forums.

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Hotchkis ARB | Stillen CAI | Art Pipes | Berk CBE | Stillen AP Racing Brakes | AE Performance Oil Cooler | BC Racing ER Coilovers | Doran Control Arms

corner3garage

any news of a z34 racecar?

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Corner3motorsports.com

Scott @ RA

No problem, always glad to help out when I can, where I can.

Scott @ RA

Umm, uhh... Where did you hear that from??

Kirkster

Well I got to drive it today, still cold but completely dry.

The suspension performs very very well. Areas on my favorite test run that would have unsettled the rear end were soaked up effortlessly. The feel of the suspension is very inspiring and so far I am not feeling anything that I want to change as far as the spring rates or height. I am sure that I will play with the clickers a bit in the near future but the I am happy with the initial settings so far.

The only drawback is that the rears are not going to be easy to adjust due to the fact that there is sheet metal above the rear upper clickers. Since it is in an area where water will be an issue I am not sure about making a hole for the external adjusters.

I did make before and after measurements so I know how far things have settled as well as how much I may want to adjust the suspension later. I just need to get my buddies camber checker to get an idea of the camber imparted by the 1 inch drop. I figure that I will want to get an alignment in a week or so once it is all sorted out.

__________________
Powertrain Warranty voided on 5/14/2011
Mod List:GTM Supercharger,SmartTop module, Oil Cooler, GT-R Start button, Nismo Exhaust, BC Racing ER Coilovers, Backup Camara
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JollyGoodChap

chillax man, it was a question. It would've been different if my sentence had no question marks, do you agree? Sorry for asking a question on a forum...

Scott @ RA

Oh I understand. A question on a forum is one thing..... but an accusatory question that (once spread around more) can be damaging to someones reputation without warrant, is a whole other thing.
I mean, I hear rumors and horror stories about shops and people all the time, doesn't make it my place to gossip and spread it around to others. I feel it is not my business unless it involves me directly, first hand.
(second hand rumors = gossip)

Now, I'm sorry for being a little sensitive to rumors about me and my company. I take great pride in my company and the great work we do. It just gets old trying to put to rest lame, old, damaging rumors over and over again. I am sure if you were in my position and have gone through as much unwarranted scrutiny with my company the way we have, you would probably understand where I am coming from a little better. Again, sorry for my reaction. Hope you can understand though.

Scott @ RA

That's great... Thanks so much Mozen, Kirkster, as well as gpa7pk, Wes, Ryan, Erick and all the other forum members here who are running a Relentless Autosports custom valved and spec'd set of coilovers for trusting in me and putting your suspension needs completely in my hands.
Glad you all are very pleased with the outcome, hearing this makes it all worth while.

Kirkster

Well it is all settled now.

The suspension settled 2/16ths of an inch in total in the two weeks since I put the coilovers on. It did all the settling in the first week and has not moved in the last week, so I think it is done settling.

I did a final adjustment and the car is lowered 1 inch total in the front and 3/4 of an inch in the rear.

Went out and got an alignment today.
The front camber sits at -1.6° FL and -1.4° FR the caster and toe came back into factory specs. If I get serious about autocrossing this car and the front tires are still wearing on the outside edges, I will get some eccentric delrin bushings made and add a bit more camber to the fronts. I really only want -2.5° up front as a max so I might be able to get some of that by lowering it another half inch.

The rear camber started at -2.8° RL and -2.7° RR which is why I have all that fun wheel spin in the rear right now (that and it is 30°). They were able to get them to -2.3° RL and -2.2° RR. The factory spec is -2.2° max so I am right on the edge there. I ran my 350 at -1.8° on both sides and it was pretty decent. I will have to see how the rear holds up with Hoosier A6 tires and -2.2° rear camber before I go and buy rear camber arms.

The were able to get the Toe and Caster back within factory specs all the way around so it is good there.

The car feels great on the road. Now I just have to wait till spring to see how it feels on the AutoX and local road course. Will also look at corner weighting this winter as I have access to scales.

__________________
Powertrain Warranty voided on 5/14/2011
Mod List:GTM Supercharger,SmartTop module, Oil Cooler, GT-R Start button, Nismo Exhaust, BC Racing ER Coilovers, Backup Camara
For eastwest: