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yellow speed racing coilovers

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

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Old 09-17-2019, 04:25 PM   #46 (permalink)
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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).
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Old 09-17-2019, 05:07 PM   #47 (permalink)
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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.
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Old 09-17-2019, 06:38 PM   #48 (permalink)
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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!

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Old 09-17-2019, 09:44 PM   #49 (permalink)
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Quote:
Originally Posted by OptionZero View Post
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?
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Old 09-17-2019, 09:46 PM   #50 (permalink)
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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?
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Old 09-17-2019, 09:52 PM   #51 (permalink)
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Quote:
Originally Posted by Spooler View Post
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
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Old 09-17-2019, 09:52 PM   #52 (permalink)
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What's a set of those going for these days? $15k?
The price of a used 2011 Nismo with low miles.
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Old 09-17-2019, 10:40 PM   #53 (permalink)
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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/
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Old 09-18-2019, 06:35 PM   #54 (permalink)
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Default So much information!!!

Quote:
Originally Posted by Spooler View Post
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 View Post
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?
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