Aero and Suspension Tuning With True Type Coilovers

Spooler · 08-24-2019, 12:47 PM

Here it is.

Spring Rate conversion chart.

ValidusVentus · 09-10-2019, 12:10 PM

I'm a bit surprised there is this much discussion on this point but, yep, well known fact that if you remove some of the lever arm advantage the wheel has over the spring (go from bucket to coilover) then you need to reduce the spring rate to maintain the same wheel rate

.

I have a pretty effective Aeromotions 72" wing and a 2.75-3" splitter and run 20k/9k (rear coilover) with good results. I do run some rake but the ride height is only slightly lower than stock. Lots of front overhang with the splitter and Stillen front end limit me. I don't want to get outside the optimum travel ranges on the suspension anyway.

I saw a huge gain from installing the Trackspec hood vents; more than I expected. Already with a partially boxed 34 row oil cooler, it seems like adding the venting has dropped oil temps by at least 10F.

The next aero mod on the list is adding vertical air dams in front of the wheel arches -adds pressure on the top edges of the splitter, keeps front tires out of the airstream, reducing drag, and reduces wheel arch pressure -reducing lift and improving brake cooling flow, I hope- and splitter fences to box in the splitter ends to keep the air from rolling off the side.

AlWakRa · 09-10-2019, 01:23 PM

Quote:

Originally Posted by ValidusVentus

I have a pretty effective Aeromotions 72" wing and a 2.75-3" splitter and run 20k/9k (rear coilover) with good results. I do run some rake but the ride height is only slightly lower than stock. Lots of front overhang with the splitter and Stillen front end limit me. I don't want to get outside the optimum travel ranges on the suspension anyway.

This is the setup I am looking for, I have 21kg front 7kg rear, thinking about 9kg rear before I add aero parts.

Brendan · 09-17-2019, 09:21 AM

here is a nice article regarding choosing spring rates that helped me get started on my build.
How To Choose Spring Rates For Your Car | Speed Academy

Hotrodz · 09-17-2019, 10:25 AM

Quote:

Originally Posted by Brendan

here is a nice article regarding choosing spring rates that helped me get started on my build.
How To Choose Spring Rates For Your Car | Speed Academy

Nice!

Rusty · 09-17-2019, 12:07 PM

For chits and giggles. I measured my ride height. It's 27 front and 27.25 rear. Remember that I'm on stock Nismo coils and my tire selection.

Spooler · 09-22-2019, 01:25 AM

Something you may enjoy.

Hotrodz · 09-22-2019, 06:02 PM

Nice video as I have seen it before. It is crazy to see how Sasha's car has progressed since that video.

Sent from my SM-G965U using Tapatalk

Spooler · 12-26-2019, 08:17 PM

Are you going to go to a wind tunnel? Interesting data. My car dang sure needs to go.

Spooler · 01-01-2020, 08:56 PM

Enjoy this Hotrodz….

Spooler · 12-30-2020, 01:54 PM

Back to the top.

Hotrodz · 12-30-2020, 02:20 PM

Quote:

Originally Posted by Spooler

Back to the top.

Anybody have any new revaluation or lessons learned. I hope to be adding content in the next month or two. Going to get the Z suspension turned and mapped by on the best suspension shops in SoCal.

Sent from my SM-G965U using Tapatalk

redondoaveb · 12-30-2020, 02:52 PM

Quote:

Originally Posted by Hotrodz

Anybody have any new revaluation or lessons learned. I hope to be adding content in the next month or two. Going to get the Z suspension turned and mapped by on the best suspension shops in SoCal.

Sent from my SM-G965U using Tapatalk

Where are you taking it? Westend?

Hotrodz · 12-30-2020, 03:31 PM

Nope WR Technica! The shop does mostly Porches and super cars. He races a 350z and knows our platform.

Sent from my SM-G965U using Tapatalk

redondoaveb · 12-30-2020, 04:16 PM

Quote:

Originally Posted by Hotrodz

Nope WR Technica! The shop does mostly Porches and super cars. He races a 350z and knows our platform.

Sent from my SM-G965U using Tapatalk

Yep, that was going to be my second guess, almost made it my first. My buddy takes his Porsche to them.

08-24-2019, 12:47 PM	#76 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,800 Drives: 2013 Nismo 370z Rep Power: 2684392	Here it is. Spring Rate conversion chart. Hotrodz likes this.

09-10-2019, 12:10 PM	#77 (permalink)
ValidusVentus Enthusiast Member Join Date: Jun 2011 Location: Washington State Posts: 400 Drives: #18 Z34 Rep Power: 23	I'm a bit surprised there is this much discussion on this point but, yep, well known fact that if you remove some of the lever arm advantage the wheel has over the spring (go from bucket to coilover) then you need to reduce the spring rate to maintain the same wheel rate . I have a pretty effective Aeromotions 72" wing and a 2.75-3" splitter and run 20k/9k (rear coilover) with good results. I do run some rake but the ride height is only slightly lower than stock. Lots of front overhang with the splitter and Stillen front end limit me. I don't want to get outside the optimum travel ranges on the suspension anyway. I saw a huge gain from installing the Trackspec hood vents; more than I expected. Already with a partially boxed 34 row oil cooler, it seems like adding the venting has dropped oil temps by at least 10F. The next aero mod on the list is adding vertical air dams in front of the wheel arches -adds pressure on the top edges of the splitter, keeps front tires out of the airstream, reducing drag, and reduces wheel arch pressure -reducing lift and improving brake cooling flow, I hope- and splitter fences to box in the splitter ends to keep the air from rolling off the side. Eagle, Rusty, Hotrodz and 1 others like this. __________________ Mods: Dedicated caged track car, lots of things. \|\|\| Valkyrie Autosport \|\|\| Last edited by ValidusVentus; 09-15-2019 at 02:11 PM.

09-17-2019, 09:21 AM	#79 (permalink)
Brendan Track Member Join Date: Apr 2013 Location: Colorado Posts: 640 Drives: Poor man's Porsche Rep Power: 542	here is a nice article regarding choosing spring rates that helped me get started on my build. How To Choose Spring Rates For Your Car \| Speed Academy Rusty and Hotrodz like this.

09-17-2019, 12:07 PM	#81 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,185 Drives: 2011 Nismo GM 6M Rep Power: 2684437	For chits and giggles. I measured my ride height. It's 27 front and 27.25 rear. Remember that I'm on stock Nismo coils and my tire selection. Hotrodz likes this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

09-22-2019, 01:25 AM	#82 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,800 Drives: 2013 Nismo 370z Rep Power: 2684392	Something you may enjoy. Rusty and BettyZ like this.

09-22-2019, 06:02 PM	#83 (permalink)
Hotrodz A True Z Fanatic Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684385	Nice video as I have seen it before. It is crazy to see how Sasha's car has progressed since that video. Sent from my SM-G965U using Tapatalk Rusty and Spooler 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\|

12-26-2019, 08:17 PM	#84 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,800 Drives: 2013 Nismo 370z Rep Power: 2684392	Are you going to go to a wind tunnel? Interesting data. My car dang sure needs to go. Rusty and Hotrodz like this.

01-01-2020, 08:56 PM	#85 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,800 Drives: 2013 Nismo 370z Rep Power: 2684392	Enjoy this Hotrodz…. AlWakRa, Rusty, Hotrodz and 1 others like this. Last edited by Spooler; 01-01-2020 at 09:13 PM.

12-30-2020, 01:54 PM	#86 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,800 Drives: 2013 Nismo 370z Rep Power: 2684392	Back to the top. Hotrodz likes this.

12-30-2020, 03:31 PM	#89 (permalink)
Hotrodz A True Z Fanatic Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684385	Nope WR Technica! The shop does mostly Porches and super cars. He races a 350z and knows our platform. Sent from my SM-G965U using Tapatalk JARblue, cv129, Rusty and 2 others 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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