yellow speed racing coilovers

AlWakRa · 09-17-2019, 04:25 PM

I agree with others, rear is stiff, I would say 5kg or 6kg if you don't have a wing. I have 21kg/7kg and it gives a good balance with some play between understeer and oversteer (depends on how much rake I have).

OptionZero · 09-17-2019, 05:07 PM

The wait is likely due to requesting such a specific set up. Mostly luck; i bought a set for my IS300 during a black friday sale when they had a bunch of un-sold stock leftover from whatever their last production run was. saved a few hundred bucks

best part - they actually screwed up their inventory system, my order was listed as in stock but not in stock. They built me a new set with the latest version of parts and honored the discount price. lol

If you wanna be baller you should get their Air Piston lift system too.

Hotrodz · 09-17-2019, 06:38 PM

Fortune's customer service is fantastic however I wonder about their calculations when it comes true type setup on our cars. Do your homework and or get help!

Sent from my SM-G965U using Tapatalk

Rusty · 09-17-2019, 09:44 PM

Quote:

Originally Posted by OptionZero

The wait is likely due to requesting such a specific set up. Mostly luck; i bought a set for my IS300 during a black friday sale when they had a bunch of un-sold stock leftover from whatever their last production run was. saved a few hundred bucks

best part - they actually screwed up their inventory system, my order was listed as in stock but not in stock. They built me a new set with the latest version of parts and honored the discount price. lol

If you wanna be baller you should get their Air Piston lift system too.

Being a baller is a set of 4 way JRZ's. You ever price them out?

gomer_110 · 09-17-2019, 09:46 PM

Quote:

Originally Posted by Rusty

Being a baller is a set of 4 way JRZ's. You ever price them out?

What's a set of those going for these days? $15k?

Jhill · 09-17-2019, 09:52 PM

Quote:

Originally Posted by Spooler

A 9kg/mm spring in the back on a true coilover is probably too much. I would look at more in the 7kg/mm range.

I think a 7k true is about equal to 11-12k OEM type right? So that would probably match 13k front better

Rusty · 09-17-2019, 09:52 PM

Quote:

Originally Posted by gomer_110

What's a set of those going for these days? $15k?

The price of a used 2011 Nismo with low miles.

Brendan · 09-17-2019, 10:40 PM

Quote:

Originally Posted by Rusty

The price of a used 2011 Nismo with low miles.

Evasive list 4 ways for a 987 Cayman at over 16k. I'd better win every damn race I enter

https://www.evasivemotorsports.com/s...he-cayman-987/

eliboy · 09-18-2019, 06:35 PM

Quote:

Originally Posted by Spooler

A 9kg/mm spring in the back on a true coilover is probably too much. I would look at more in the 7kg/mm range.

Spooler from reading OZ link I do think I need to go with 7kg/mm or even 6kg/mm

Quote:

Originally Posted by OptionZero

Yup, spooler is right. Your spring rates are appropriate for a divorced spring (OEM type) setup; when you change to true type the geometry change and you need to adjust the spring rate accordingly

Further discussion here:
Aero and Suspension Tuning With True Type Coilovers

Call Fortune immediately before they lock in your order

OZ thanks for the link, I am still reading it over and over as there is so much information in there but from what I was able to understand till now it looks like i need to go with front 14kg/mm or 13kg/mm and rear 7kg/mm or 6kg/mm.

I don't have any aftermarket aero only the Nismo wing and lip that came with the car and the back of the car is gutted. Adding aero
and gut the front (100% stock today) are things that I will do one day, but when I will do them I will also need to change the spring rates.

What do you guys think about these numbers?

09-17-2019, 04:25 PM	#46 (permalink)
AlWakRa Track Member Join Date: Oct 2010 Location: Qatar Posts: 600 Drives: 10 370Z PW 6MT Rep Power: 13450	I agree with others, rear is stiff, I would say 5kg or 6kg if you don't have a wing. I have 21kg/7kg and it gives a good balance with some play between understeer and oversteer (depends on how much rake I have). __________________ 2010 370Z Touring Sport Pearl White 6MT Powered by: Fast Intentions - Motordyne - Stillen - OS Giken - CJ Motorsports - Mishimoto - MCA Suspension - SPL - SuperPRO - RJM - Z1 Motorsport - Zspeed - Volk My Humble Journals

09-17-2019, 05:07 PM	#47 (permalink)
OptionZero A True Z Fanatic Join Date: Apr 2011 Location: Sacramento Posts: 3,251 Drives: 15 370Z Nismo 6MT Rep Power: 214100	The wait is likely due to requesting such a specific set up. Mostly luck; i bought a set for my IS300 during a black friday sale when they had a bunch of un-sold stock leftover from whatever their last production run was. saved a few hundred bucks best part - they actually screwed up their inventory system, my order was listed as in stock but not in stock. They built me a new set with the latest version of parts and honored the discount price. lol If you wanna be baller you should get their Air Piston lift system too. Hotrodz and Spooler like this. __________________ OptionZero Build Thread

09-17-2019, 06:38 PM	#48 (permalink)
Hotrodz A True Z Fanatic Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684385	Fortune's customer service is fantastic however I wonder about their calculations when it comes true type setup on our cars. Do your homework and or get help! Sent from my SM-G965U using Tapatalk Rusty and Brendan like this. __________________ *Fast Intentions TT Installed and Tuned by Seb at SpecialtyZ 610whp 560tq:\|Fast Intentions 3" TT-TDX*\|SpecialtyZ/Fast Intentions 72 Row Oil Cooler\|SZ 6 Puck Clutch & Flywheel\|3GsCustoms\|Z1\|Wavetrac\|Hotchkis\|Whiteline \|Blitz\|Fortune Auto 500\|Fujimura\|SPL\|H&R\|TK\|TWM\|RPM Rollbar\|Sparco\|Next Level Performance\|TrackSpec\|AeroFlow Dynamics\|Pioneer\|

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