Getting prepped for next year, suspension changes, tires etc. Help?!?!
#21
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I'm workin on it!
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OP note how well my suspension works with R-comps and stock shocks.
<a href="http://s183.photobucket.com/albums/x69/ke0ki2k/?action=view¤t=threewheelin-1.jpg" target="_blank"><img src="http://i183.photobucket.com/albums/x69/ke0ki2k/threewheelin-1.jpg" border="0" alt="Photobucket"></a>
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#22
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I'm workin on it! ![Big Grin](https://my350z.com/forum/images/smilies/biggrin.gif)
OP note how well my suspension works with R-comps and stock shocks.
<a href="http://s183.photobucket.com/albums/x69/ke0ki2k/?action=view¤t=threewheelin-1.jpg" target="_blank"><img src="http://i183.photobucket.com/albums/x69/ke0ki2k/threewheelin-1.jpg" border="0" alt="Photobucket"></a>
![Roll Eyes (Sarcastic)](https://my350z.com/forum/images/smilies/rolleyes.gif)
![Big Grin](https://my350z.com/forum/images/smilies/biggrin.gif)
OP note how well my suspension works with R-comps and stock shocks.
<a href="http://s183.photobucket.com/albums/x69/ke0ki2k/?action=view¤t=threewheelin-1.jpg" target="_blank"><img src="http://i183.photobucket.com/albums/x69/ke0ki2k/threewheelin-1.jpg" border="0" alt="Photobucket"></a>
![Roll Eyes (Sarcastic)](https://my350z.com/forum/images/smilies/rolleyes.gif)
True, he is stinkin' fast on the stock stuff!
#26
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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?
And do I buy new Bilsteins and revalve them
or do I look for used ones?
#27
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...Says the guy on stock springs and off-road ride height!![](https://my350z.com/forum/images/smilies/icon18.gif)
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.
![](https://my350z.com/forum/images/smilies/icon18.gif)
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.
#29
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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.
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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.
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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.
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.
#37
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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.
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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).
#39
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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