Notices
Autocross/Road SCCA Solo II, SCCA Club Racing, Redline Track Events, Speed Trial, Speed Ventures, Grand-Am Cup, JGTC, Procar Australia

Getting prepped for next year, suspension changes, tires etc. Help?!?!

Thread Tools
 
Search this Thread
 
Old 11-30-2008, 03:28 PM
  #21  
ke0ki2k
Registered User
iTrader: (2)
 
ke0ki2k's Avatar
 
Join Date: Jul 2006
Location: Knoxville, Tennessee
Posts: 1,471
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by BPRacer
...Says the guy on stock springs and off-road ride height!

I'm workin on it!

OP note how well my suspension works with R-comps and stock shocks.

<a href="http://s183.photobucket.com/albums/x69/ke0ki2k/?action=view&current=threewheelin-1.jpg" target="_blank"><img src="http://i183.photobucket.com/albums/x69/ke0ki2k/threewheelin-1.jpg" border="0" alt="Photobucket"></a>


Old 11-30-2008, 03:43 PM
  #22  
BPRacer
Registered User
iTrader: (1)
 
BPRacer's Avatar
 
Join Date: Sep 2008
Location: Chattanooga, TN
Posts: 158
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by ke0ki2k
I'm workin on it!

OP note how well my suspension works with R-comps and stock shocks.

<a href="http://s183.photobucket.com/albums/x69/ke0ki2k/?action=view&current=threewheelin-1.jpg" target="_blank"><img src="http://i183.photobucket.com/albums/x69/ke0ki2k/threewheelin-1.jpg" border="0" alt="Photobucket"></a>



True, he is stinkin' fast on the stock stuff!
Old 11-30-2008, 03:48 PM
  #23  
BPRacer
Registered User
iTrader: (1)
 
BPRacer's Avatar
 
Join Date: Sep 2008
Location: Chattanooga, TN
Posts: 158
Likes: 0
Received 0 Likes on 0 Posts
Default

Wait, I feel left out without getting to show off MY pic in this thread...


By fastech at 2008-11-07

By fastech at 2008-11-07

By fastech at 2008-11-07

There, that's better!
Old 11-30-2008, 07:03 PM
  #24  
yusoslo
Registered User
Thread Starter
iTrader: (4)
 
yusoslo's Avatar
 
Join Date: Jan 2007
Location: Pig Heaven VA
Posts: 2,153
Likes: 0
Received 0 Likes on 0 Posts
Default

1st and 3rd pics rock.

This thread makes me want Rcomps now!!! look at that grip!
Old 12-01-2008, 04:45 PM
  #25  
guitman32
New Member
iTrader: (15)
 
guitman32's Avatar
 
Join Date: Jul 2005
Location: South FL
Posts: 1,998
Received 108 Likes on 90 Posts
Default

Originally Posted by BPRacer
Wait, I feel left out without getting to show off MY pic in this thread...


By fastech at 2008-11-07

There, that's better!
New background, great shot!
Old 12-01-2008, 06:38 PM
  #26  
yusoslo
Registered User
Thread Starter
iTrader: (4)
 
yusoslo's Avatar
 
Join Date: Jan 2007
Location: Pig Heaven VA
Posts: 2,153
Likes: 0
Received 0 Likes on 0 Posts
Default

Any more recommendations? I think for cost reasons I will run my oem 18's with the 275 Kumo 710's.

And do I buy new Bilsteins and revalve them
or do I look for used ones?
Old 12-01-2008, 07:55 PM
  #27  
Gsedan35
New Member
iTrader: (10)
 
Gsedan35's Avatar
 
Join Date: Mar 2003
Location: Central California
Posts: 3,121
Likes: 0
Received 7 Likes on 7 Posts
Default

Originally Posted by BPRacer
...Says the guy on stock springs and off-road ride height!


Trailer hitches are available from several sources, even thru Uhaul, just do a search on this site. But read the threads about reinforcement of the bumper, as I feel that's pretty necessary IMO! Still, makes things a lot easier to get to the events, and you can buy a cheapo trailer from Harbor Freight for a couple hundred bucks.

For shocks to use with the Eibachs, look at T.C.Kline Racing's adjustable Konis. They would make a nice, competitive-as-possible combo with the Eibachs, a BIG improvement!

I have driven the Kumho V710's to local events many times, they would do just fine if you had to go that route. I wouldn't drive them every day, and I wouldn't want to drive them to the event on a rainy day, but if you are without another way to get them there, they will get you to the event, turn fast times, and get you home no problem.

The TcKline shocks cannot be run with springs that soft, they are valved for the Nismo T2 spring rates. Revalved Bilstein's would be a much better choice, though no progressive spring should be run, period.
Old 12-01-2008, 08:05 PM
  #28  
Gsedan35
New Member
iTrader: (10)
 
Gsedan35's Avatar
 
Join Date: Mar 2003
Location: Central California
Posts: 3,121
Likes: 0
Received 7 Likes on 7 Posts
Default

Originally Posted by Beau
The T2 springs are like 600lbs each. I think the rear is a little stiffer than front. Far stiffer than any other springs I know of.
Nismo T2 springs

690lbs/690lbs
Old 12-01-2008, 08:25 PM
  #29  
Gsedan35
New Member
iTrader: (10)
 
Gsedan35's Avatar
 
Join Date: Mar 2003
Location: Central California
Posts: 3,121
Likes: 0
Received 7 Likes on 7 Posts
Default

Originally Posted by yusoslo
^^^ I have been rereading your post and I cant tell. Are you saying the Eibachs are good? or are NOT good for my auto-Xing.

Would I be best buying Bilstein coilovers PS10's and sell my Eibachs? will the bilsteins still allow me to go as low as I am now?
In quoting the Eibach Prokit spring rates, not telling the whole story, how soft are the initial spring rates?

Eibach 350Z progressive springs 1”/1”
Spring rates in LBS initial/final front 296/384 initial/final rear 316/421

While not excessive, they are still progressive and have no place on a car that see's a track. They are sold as a compromise between street ride quality and offering a mild performance enhancement. Problem is they numb the things you do not want numbed when your getting closer to the edge of the performance envelope. Without question, kick them to the curb and it's not one of those "oh it doesn't really hurt" things.

Bilstein Pss10 would be a upgrade, however you need to cure one thing for the track. The setup's progressive rear springs have far too much rate spread between initial and final rates. It is a easy fix for about $270 and you'll still have rear height adjustablity. While the Pss10 isslightly revalved vs the Pss9 in a manner Bilstein has not specified, I felt that my Pss9's have too much dampning at the higher settings to the point that tire adheasion is compromised on less then smooth corners. The Pss10's different valving scheme may or may have not addressed this. When I have mine revalved, I will address it.

Bilstein PSS10 coilover (Monotube construction, adjustable dampners)
Spring rates 370/240-420 (rear progressive)


The Pss10 can be resprung using Swift 70mm ID springs for the front and doing the same linear adjustable seat coversion I did for my Pss9's with your choice of 5" ID 9.5" tall springs. They can also be revalved, creating your own "race coilovers" that have high quality internals and high quality damping properties.

H.D's can also be revalved. You can use oem based springs or do your own coilover comversion, Bilstein does make their own parts for the front.

I would not bother with Koni's or the TcKline's, too much Hystersis or control lag, even when revalved. I get it that they represent a ecomonical choice and people can win on them, however they are a compromise you don't have to make.

Last edited by Gsedan35; 12-01-2008 at 08:35 PM.
Old 12-01-2008, 08:28 PM
  #30  
Gsedan35
New Member
iTrader: (10)
 
Gsedan35's Avatar
 
Join Date: Mar 2003
Location: Central California
Posts: 3,121
Likes: 0
Received 7 Likes on 7 Posts
Default

Originally Posted by yusoslo
Any more recommendations? I think for cost reasons I will run my oem 18's with the 275 Kumo 710's.

And do I buy new Bilsteins and revalve them
or do I look for used ones?

In 3 years of pretty consistent looking here and on ebay, I have only seen Bilstein HD's show up about 3 times. Twice I wasn't quick enough to bid, last time I had already bought my Pss9 setup.

For where to revalve them, run a seach here for "FatcatMotorsports"
Old 12-01-2008, 09:56 PM
  #31  
Gsedan35
New Member
iTrader: (10)
 
Gsedan35's Avatar
 
Join Date: Mar 2003
Location: Central California
Posts: 3,121
Likes: 0
Received 7 Likes on 7 Posts
Default

Forgot about these

Cobb tuning linear springs
drop 3/4" - 15/16"
Spring rates 436/535
Old 12-01-2008, 11:26 PM
  #32  
terrasmak
Super Moderator
MY350Z.COM
iTrader: (8)
 
terrasmak's Avatar
 
Join Date: Jan 2007
Location: Sin City
Posts: 28,701
Received 2,306 Likes on 1,661 Posts
Default

I would scratch the RPF1 idea, its a great wheel, but has a horrible offset for the Z. While offsets in the teens look cool for the street, you need something in the 30 range to maximize your tires.
Old 12-02-2008, 05:06 AM
  #33  
yusoslo
Registered User
Thread Starter
iTrader: (4)
 
yusoslo's Avatar
 
Join Date: Jan 2007
Location: Pig Heaven VA
Posts: 2,153
Likes: 0
Received 0 Likes on 0 Posts
Default

great info guys.

The only thing I dont want to comprimise is my ride height, which is around 1.2" drop. Can the Bilstein PS10's acheive this drop???
Old 12-02-2008, 06:56 AM
  #34  
guitman32
New Member
iTrader: (15)
 
guitman32's Avatar
 
Join Date: Jul 2005
Location: South FL
Posts: 1,998
Received 108 Likes on 90 Posts
Default

Originally Posted by terrasmak
I would scratch the RPF1 idea, its a great wheel, but has a horrible offset for the Z. While offsets in the teens look cool for the street, you need something in the 30 range to maximize your tires.
Take your pick:

Available in:
17x9 +22
17x9 +35
17x9.5 +38
17x10 +18
17x10 +38

18x9 +35
18x9.5 +15
18x9.5 +38
18x9.5 +45
18x10 +38
18x10.5 +15
Old 12-02-2008, 08:39 AM
  #35  
bighungrydewees
New Member
iTrader: (1)
 
bighungrydewees's Avatar
 
Join Date: Nov 2008
Location: Madison, MS
Posts: 44
Likes: 0
Received 0 Likes on 0 Posts
Default

17x10 +38 -Where did you find this wheel? I am aware of the +18, but this + 38 changes everything for me. (I feel like a new man!)
Old 12-02-2008, 10:39 AM
  #36  
idrive_MD
Registered User
iTrader: (8)
 
idrive_MD's Avatar
 
Join Date: Aug 2008
Location: bel air, MD
Posts: 633
Likes: 0
Received 0 Likes on 0 Posts
Default

just to throw it out there since cost can be an issue, the 5zigen FN01 can be had for a little cheaper than the RPF1, different offsets and still lighter than stock (20lbs +/- 1) and still strong enough for racing:

17x9 + 15 20 35
17x10 + 12 25 35
18x9.5 + 12 22 35

also any reason why you havent considered the BC coilover kit? its very complete and you can choose your spring rates at purchase, cheap rebuild cost and will allow you to achieve the ride height you want (as most coilovers will). I think they come standard with 10/8 rates the rates are changeable in increments of 2-kg...just something I would consider.
Old 12-02-2008, 11:08 AM
  #37  
guitman32
New Member
iTrader: (15)
 
guitman32's Avatar
 
Join Date: Jul 2005
Location: South FL
Posts: 1,998
Received 108 Likes on 90 Posts
Default

Originally Posted by bighungrydewees
17x10 +38 -Where did you find this wheel? I am aware of the +18, but this + 38 changes everything for me. (I feel like a new man!)
Found that size listed here:
http://www.edgeracing.com/wheels/enkei_wheel/

They also have RPF1s at Discount Tire Direct (but there I only see the 17x10 +18 listed):
http://www.discounttiredirect.com/di...=Car%2FMinivan

Last edited by guitman32; 12-02-2008 at 11:13 AM.
Old 12-02-2008, 11:51 AM
  #38  
z-u-later
Registered User
iTrader: (43)
 
z-u-later's Avatar
 
Join Date: Jun 2006
Location: Lone Star State
Posts: 2,757
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by idrive_MD
just to throw it out there since cost can be an issue, the 5zigen FN01 can be had for a little cheaper than the RPF1, different offsets and still lighter than stock (20lbs +/- 1) and still strong enough for racing:

17x9 + 15 20 35
17x10 + 12 25 35
18x9.5 + 12 22 35
I've been contemplating on which setup to get for the last several weeks now. I've narrowed it down to either the 5Zigen FN01 or Enkei RPF1. I've priced both and the cost difference is negligible (comparing 18s, not 17s). If color is an issue, SBC or black in RPF1 will cost another $200+.

FN01's widest size is 9.5, whereas the RPF1 is 10.5. RPF1s are also lighter overall, and IMO, has a better looking design. The V710 285/30/18 has been proven to be a fast setup and the 18x10.5 RPF1 rims are better suited for this tire. Unless someone can convince me otherwise, this is the ideal setup for both autocross & road course (without much of a fender/suspension modification involved).
Old 12-02-2008, 01:53 PM
  #39  
yusoslo
Registered User
Thread Starter
iTrader: (4)
 
yusoslo's Avatar
 
Join Date: Jan 2007
Location: Pig Heaven VA
Posts: 2,153
Likes: 0
Received 0 Likes on 0 Posts
Default

I think bc or stance is going to put me in the same boat. A generic coilover with untrue adjustmants. It is my impression that a good shock and spring setup will be more consistant
Old 12-02-2008, 05:48 PM
  #40  
BloMyS14
New Member
iTrader: (7)
 
BloMyS14's Avatar
 
Join Date: May 2005
Location: New Orleans
Posts: 3,204
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by terrasmak
I would scratch the RPF1 idea, its a great wheel, but has a horrible offset for the Z. While offsets in the teens look cool for the street, you need something in the 30 range to maximize your tires.
Why do you think you need such a high offset? I run the +15 with a 285/30/18 with no problem.


Quick Reply: Getting prepped for next year, suspension changes, tires etc. Help?!?!



All times are GMT -8. The time now is 09:24 PM.