Chuhatsu Plus MultiRoad lift springs - Page 3 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

mav1178 · 05-17-2018, 12:10 PM

Quote:

Originally Posted by why?

so you can run these with stock everything else? I'd be very interested, I seem to rub on absolutely everything, If the spring rate is oem or higher and the handling won't be destroyed anyways.

I finally got them tested at Eibach.

Chuhatsu lift springs:
Front: 129 lbs/in
Rear: 206 lbs/in

For comparison purposes:

Car: Front OE Spring Rate:
Subaru BRZ 27 N/mm (153 lbs/in)
Scion FR-S 23 N/mm (131 lbs/in)

Rear OE Spring Rate:
Subaru BRZ 34 N/mm (195 lbs/in)
Scion FR-S 37 N/mm (211 lbs/in)

venturaII · 05-17-2018, 12:25 PM

A bit of a hijack, but sort of related to Mav's post above: Are there different spring part numbers for our cars based on option packages/vehicle weight, or are all BRZ springs (non including special package models like PP, tS, etc) or FR-S springs the same rate? I've been wanting a set of BRZ front springs for my FR-S, but want to be sure my ride height is going to stay where it is right now. Since our cars have very few items that are optional, I assume they are all the same within a given model, but just want tbe sure.

churchx · 05-17-2018, 01:42 PM

Hmm, it looks, like fronts may become a bit overdamped then? As side gain, maybe car will be less understeery then stock even without camber changes.
P.S.
Maybe worth adding those rates to OP.

Yoniyama · 05-17-2018, 01:46 PM

Thank you so much for posting the spring rate information.

Near OEM spring rate and an extra 15mm of wheel travel, I am ready to get a set.

How do I order a set for AT for delivery in the US?

Racecomp Engineering · 05-17-2018, 01:49 PM

Quote:

Originally Posted by mav1178

I finally got them tested at Eibach.

Chuhatsu lift springs:
Front: 129 lbs/in
Rear: 206 lbs/in

For comparison purposes:

Car: Front OE Spring Rate:
Subaru BRZ 27 N/mm (153 lbs/in)
Scion FR-S 23 N/mm (131 lbs/in)

Rear OE Spring Rate:
Subaru BRZ 34 N/mm (195 lbs/in)
Scion FR-S 37 N/mm (211 lbs/in)

Thanks for that. Interesting...basically close to OEM FRS spring rates.

- Andrew

venturaII · 05-17-2018, 02:01 PM

Well, if you have extra travel available, you don't need a stiff rate to control movement in as restricted an area.

mav1178 · 05-17-2018, 03:23 PM

Quote:

Originally Posted by churchx

Hmm, it looks, like fronts may become a bit overdamped then?

The fronts are barely softer than stock FR-S, so it may just be sample variation. Impossible to determine that conclusion based on one single spring test. In N/mm it's 22.68 front on Chuhatsu vs 23 on stock FR-S.

H_K · 06-24-2018, 09:29 PM

Are there any installation instructions in English? Any North American suppliers?

mav1178 · 06-26-2018, 05:01 PM

Quote:

Originally Posted by H_K

Are there any installation instructions in English? Any North American suppliers?

https://frsport.com/chuhatsu-plus-cp...z-zn6-zc6-2013

No need for installation instructions in English unless you're doing spring installation for the first time ever.

Wiscocrashtest · 06-28-2018, 10:27 AM

this is exactly what I need. Now to decide whether to use OEM dampers or get Konis...

churchx · 06-28-2018, 11:35 AM

If not the shortages of Bilstein, i'd also think of B6. Otherwise .. OEMs, if they are in good shape. Used MY2017 when they appear among classifieds. Koni yellows? Hmm, also probably may work.

Hyper4mance2k · 06-28-2018, 02:27 PM

Quote:

Originally Posted by churchx

If not the shortages of Bilstein, i'd also think of B6. Otherwise .. OEMs, if they are in good shape. Used MY2017 when they appear among classifieds. Koni yellows? Hmm, also probably may work.

I've had a set for sale for dirt cheap for months... A little damage, but they still work. I don't think anyone really wants them. "Coilovers and slammy McSlamerson, camber, Bruh."

leevanf · 08-07-2019, 12:56 AM

Quote:

Originally Posted by mav1178

I finally got them tested at Eibach.

Chuhatsu lift springs:
Front: 129 lbs/in
Rear: 206 lbs/in

For comparison purposes:

Car: Front OE Spring Rate:
Subaru BRZ 27 N/mm (153 lbs/in)
Scion FR-S 23 N/mm (131 lbs/in)

Rear OE Spring Rate:
Subaru BRZ 34 N/mm (195 lbs/in)
Scion FR-S 37 N/mm (211 lbs/in)

Hi Mav, are the OE springs used for comparison on the BRZ, from the older MY or 2017MY?

mav1178 · 08-07-2019, 11:29 AM

Quote:

Originally Posted by leevanf

Hi Mav, are the OE springs used for comparison on the BRZ, from the older MY or 2017MY?

Data pulled from other parts of the forum.

05-17-2018, 12:25 PM	#30
venturaII Only users lose drugs. Join Date: Nov 2014 Drives: All the time Location: Shrewsbury upon Worcestershire Posts: 1,818 Thanks: 874 Thanked 1,067 Times in 674 Posts Mentioned: 3 Post(s) Tagged: 2 Thread(s)	A bit of a hijack, but sort of related to Mav's post above: Are there different spring part numbers for our cars based on option packages/vehicle weight, or are all BRZ springs (non including special package models like PP, tS, etc) or FR-S springs the same rate? I've been wanting a set of BRZ front springs for my FR-S, but want to be sure my ride height is going to stay where it is right now. Since our cars have very few items that are optional, I assume they are all the same within a given model, but just want tbe sure. __________________ "To know a thing well, know it's limits. Only when pushed beyond its tolerances will true nature be seen." Amtal Rule Last edited by venturaII; 05-17-2018 at 12:39 PM.

05-17-2018, 02:01 PM	#34
venturaII Only users lose drugs. Join Date: Nov 2014 Drives: All the time Location: Shrewsbury upon Worcestershire Posts: 1,818 Thanks: 874 Thanked 1,067 Times in 674 Posts Mentioned: 3 Post(s) Tagged: 2 Thread(s)	Well, if you have extra travel available, you don't need a stiff rate to control movement in as restricted an area. __________________ "To know a thing well, know it's limits. Only when pushed beyond its tolerances will true nature be seen." Amtal Rule

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Where to Lift with Two Post Lift?	Don Ivey	Mechanical Maintenance (Oil, Fluids, Break-In, Servicing)	4	08-18-2022 08:51 AM
Anyone in the DMV with a lift?	Rifle	Mid-Atlantic	5	06-06-2016 03:35 PM
EZCarLift Easy car lift portable super easy car lift	bren5279	Mechanical Maintenance and Tools	16	09-11-2015 01:57 PM
don't lift	pr086	Scion FR-S / Toyota 86 GT86 General Forum	27	08-17-2012 11:51 AM

05-17-2018, 01:42 PM	#31
churchx Senior Member Join Date: Mar 2015 Drives: 2014 GT86 Location: Latvia, Riga Posts: 4,333 Thanks: 696 Thanked 2,085 Times in 1,436 Posts Mentioned: 53 Post(s) Tagged: 1 Thread(s)	Hmm, it looks, like fronts may become a bit overdamped then? As side gain, maybe car will be less understeery then stock even without camber changes. P.S. Maybe worth adding those rates to OP.

05-17-2018, 01:46 PM	#32
Yoniyama Senior Member Join Date: Feb 2014 Drives: BRZ 2018 Location: California Posts: 119 Thanks: 116 Thanked 65 Times in 38 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Thank you so much for posting the spring rate information. Near OEM spring rate and an extra 15mm of wheel travel, I am ready to get a set. How do I order a set for AT for delivery in the US?

06-24-2018, 09:29 PM	#36
H_K Member Join Date: Jun 2018 Drives: '13 Scion fr-s Location: Canada Posts: 63 Thanks: 32 Thanked 14 Times in 13 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Are there any installation instructions in English? Any North American suppliers?

06-28-2018, 10:27 AM	#38
Wiscocrashtest Member Join Date: Apr 2018 Drives: 14 BRZ, 16 FoSt Location: MKE WI Posts: 36 Thanks: 1 Thanked 18 Times in 12 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	this is exactly what I need. Now to decide whether to use OEM dampers or get Konis...

06-28-2018, 11:35 AM	#39
churchx Senior Member Join Date: Mar 2015 Drives: 2014 GT86 Location: Latvia, Riga Posts: 4,333 Thanks: 696 Thanked 2,085 Times in 1,436 Posts Mentioned: 53 Post(s) Tagged: 1 Thread(s)	If not the shortages of Bilstein, i'd also think of B6. Otherwise .. OEMs, if they are in good shape. Used MY2017 when they appear among classifieds. Koni yellows? Hmm, also probably may work.

User Name		Remember Me?
Password