Jrz rs pro for track

03threefiftyz · 08-09-2013, 06:45 PM

Pretty sure Len only runs something like 6-7k spring in back (coil-over). I think anything under 750-800lb spring up front is going too soft.

SE5spd · 08-10-2013, 02:28 PM

Len runs 13k front 6k rear as a true coilover.

clintfocus · 08-10-2013, 04:58 PM

len who?

SE5spd · 08-10-2013, 06:46 PM

Quote:

Originally Posted by clintfocus

len who?

Novak.

Dwnshift · 08-10-2013, 07:37 PM

Don't add aero to cover up something else. You will be quicker with proper spring rates...and no "aero" than a bd choice in spring rates and a large rear wing.
Larger front bar

clintfocus · 08-10-2013, 08:01 PM

its not band aiding the rates with aero, its in prep for the aero. what good is the rear onces its on the bump stops in high speed cause the rates were too soft for the downforce

GSS138 · 08-10-2013, 08:09 PM

Hey dwnshift, can you explain the huge front bar a bit further. I am pretty new to suspensions been chatting with clint a bit and doing my reading. But based on what I sorta kinda know, not totally clear on why you recommend a ton of front bar. Keep in mind I am still 98% stock. Would it be good for me to go super stiff up front? I am thinking of doing sways before dampers and coilovers just to get rid of some of the body roll. In the meantime I am just trying to learn more about suspensions.

Dwnshift · 08-10-2013, 08:46 PM

If your on the bump stops ...then your rear ride height is too low.
Its a complete package and everything has to work together.

Sh0velMan · 08-10-2013, 10:51 PM

I think he likes the massive bar because the front end of these cars are so heavy, he likes to prevent too much weight transfer to the outside wheel, thus reducing grip.

03threefiftyz · 08-11-2013, 07:07 AM

Big front bar also helps to load the outside rear tire on corner exit as well. My guess is that transfer to the tire is of huge importance on a small 275 rear section width. I also run a large front bar and no rear bar for the same reason. At Road America you don't set fast lap times with speed into the corner, but how quickly you get out of them. Getting on the throttle early onto the long straights is hugely important.

Sh0velMan · 08-11-2013, 08:59 AM

Quote:

Originally Posted by 03threefiftyz

Big front bar also helps to load the outside rear tire on corner exit as well. My guess is that transfer to the tire is of huge importance on a small 275 rear section width. I also run a large front bar and no rear bar for the same reason. At Road America you don't set fast lap times with speed into the corner, but how quickly you get out of them. Getting on the throttle early onto the long straights is hugely important.

Exactly.

GSS138 · 08-11-2013, 12:41 PM

Quote:

Originally Posted by Sh0velMan

I think he likes the massive bar because the front end of these cars are so heavy, he likes to prevent too much weight transfer to the outside wheel, thus reducing grip.

That makes sense, I am mainly just reciting what I have read, but I am looking into sways bars sometime soon. "By the book" one would be lead to believe that a stiffer rear sway and a softer front would be what our car needs, but everything is relative to the existing setup of the car. So for a car that is OEM suspension like mine, would you go as stiff as possible up front and then add a little in the back as well?

SE5spd · 08-11-2013, 02:15 PM

You'll know why stiff rear bar isn't great, I ran the stiffest rear setting on my hotchkis bar (350 not 370z) and in corners it felt like my rear wheel wanted to lift, so I would start throttling out and my car would kick out.

martin82 · 08-22-2013, 07:01 PM

Some stuff came in today!

GaleForce · 08-22-2013, 07:08 PM

08-10-2013, 02:28 PM	#32 (permalink)
SE5spd Enthusiast Member Join Date: Aug 2012 Location: Los Angeles Posts: 276 Drives: Z33 Rep Power: 13	Len runs 13k front 6k rear as a true coilover. __________________ http://www.youtube.com/zndhnm

08-10-2013, 08:09 PM	#37 (permalink)
GSS138 Track Member Join Date: Mar 2013 Location: Mission Viejo, CA Posts: 769 Drives: '12 370Z 6M Sport Rep Power: 13	Hey dwnshift, can you explain the huge front bar a bit further. I am pretty new to suspensions been chatting with clint a bit and doing my reading. But based on what I sorta kinda know, not totally clear on why you recommend a ton of front bar. Keep in mind I am still 98% stock. Would it be good for me to go super stiff up front? I am thinking of doing sways before dampers and coilovers just to get rid of some of the body roll. In the meantime I am just trying to learn more about suspensions. __________________ Current Mods: Vorpal Weapon +5.

08-10-2013, 10:51 PM	#39 (permalink)
Sh0velMan A True Z Fanatic Join Date: Jan 2012 Location: Dallas/Ft.Worth Posts: 3,349 Drives: Noisily. Rep Power: 20	I think he likes the massive bar because the front end of these cars are so heavy, he likes to prevent too much weight transfer to the outside wheel, thus reducing grip. __________________ Buy My Car! \| Build Thread

08-11-2013, 07:07 AM	#40 (permalink)
03threefiftyz Track Member Join Date: Apr 2010 Location: MD Posts: 536 Drives: 03 350z 6mt Rep Power: 16	Big front bar also helps to load the outside rear tire on corner exit as well. My guess is that transfer to the tire is of huge importance on a small 275 rear section width. I also run a large front bar and no rear bar for the same reason. At Road America you don't set fast lap times with speed into the corner, but how quickly you get out of them. Getting on the throttle early onto the long straights is hugely important. Sh0velMan likes this.

08-11-2013, 02:15 PM	#43 (permalink)
SE5spd Enthusiast Member Join Date: Aug 2012 Location: Los Angeles Posts: 276 Drives: Z33 Rep Power: 13	You'll know why stiff rear bar isn't great, I ran the stiffest rear setting on my hotchkis bar (350 not 370z) and in corners it felt like my rear wheel wanted to lift, so I would start throttling out and my car would kick out. sig11 likes this. __________________ http://www.youtube.com/zndhnm

08-09-2013, 06:45 PM	#31 (permalink)
03threefiftyz Track Member Join Date: Apr 2010 Location: MD Posts: 536 Drives: 03 350z 6mt Rep Power: 16	Pretty sure Len only runs something like 6-7k spring in back (coil-over). I think anything under 750-800lb spring up front is going too soft.

08-10-2013, 04:58 PM	#33 (permalink)
clintfocus Track Member Join Date: Jan 2011 Location: los angeles Age: 38 Posts: 933 Drives: 370z, EK Civic, F150 Rep Power: 15	len who?

08-10-2013, 07:37 PM	#35 (permalink)
Dwnshift Track Member Join Date: Feb 2012 Location: Cincy Posts: 717 Drives: NISMO 370Z RC Rep Power: 14	Don't add aero to cover up something else. You will be quicker with proper spring rates...and no "aero" than a bd choice in spring rates and a large rear wing. Larger front bar

08-10-2013, 08:01 PM	#36 (permalink)
clintfocus Track Member Join Date: Jan 2011 Location: los angeles Age: 38 Posts: 933 Drives: 370z, EK Civic, F150 Rep Power: 15	its not band aiding the rates with aero, its in prep for the aero. what good is the rear onces its on the bump stops in high speed cause the rates were too soft for the downforce

08-10-2013, 08:46 PM	#38 (permalink)
Dwnshift Track Member Join Date: Feb 2012 Location: Cincy Posts: 717 Drives: NISMO 370Z RC Rep Power: 14	If your on the bump stops ...then your rear ride height is too low. Its a complete package and everything has to work together.

08-22-2013, 07:01 PM	#44 (permalink)
martin82 A True Z Fanatic Join Date: Nov 2011 Location: los angeles Posts: 2,636 Drives: 12 Nissan 370Z MB M6 Rep Power: 20	Some stuff came in today! cv129 likes this.

08-22-2013, 07:08 PM	#45 (permalink)
GaleForce A True Z Fanatic Join Date: Aug 2011 Location: Ontario, Canada Posts: 21,749 Drives: Varis Arising II Rep Power: 51865	__________________ >>>GaleForce's Build<<< >>>FaceBook @3GsCustoms<<<>>>Instagram @GaleForce370z<<< Varis Kamikaze-Z

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
2013 Road Atlanta Track Dates - MVP Track Time	Feffman	South East Region	3	10-05-2013 09:22 AM
2012 Midwest Track Schedule - MVP Track Time	Feffman	Mid Western Region	2	06-17-2012 09:16 AM
$110 Track day at Willow Springs- Big Track -March24 in SoCal	Extremespeed	Track / Autocross / Drifting / Dragstrip	4	03-15-2012 08:27 PM
$110 Track day at Willow Springs- Big Track -March24 in SoCal	Extremespeed	Southern California Region	6	03-07-2012 01:28 AM
United touge/track drivers Streets of Willow Track Day	K.R.O.P.S.	Southern California Region	0	10-05-2011 08:25 PM