Ohlins Road & Track for FRS/BRZ suspension install/review thread

[oppiee]

So just installed ohlins v2. With adjustments to everything recommended in the manual, my rears sit a little higher , about 1 cm than the front. Normal?

[churchx]

ajc209: IF range big enough to cater. And then there are bits that spring rates are halved (which makes it less believable) and then even they themselves say that better not use springs firmer then by 35% without revalving.
Imho simpler to label off this kit permanently as "Road" only, or for tracking only on limited grip tires, and if anything from non-discontinued Ohlins offering is worth considering for track use on sticky tires, r compounds, then maybe only their japanese BTO set of 88.2N/mm 9kgf/mm - 68.6N/mm 7kgf/mm rates. IIRC they are still being sold on their online auction sites .. no clue on possible shipping/import/warranty issues though, if going this way.

[nikitopo]

@Scracho Why don't you check the Sachs performance coilovers that have Front 38.50N/mm and Rear 42.50N/mm? These rates are more appropriate for track comparing to the front biased rates of Ohlins. Going much more stiffer it'll ruin the dual characteristic of your car being road and track friendly.

PS: I've seen your track video trying to outrun a Cayman GT4. You would not have a better chance with a Pilot Sport 4 tire, when the GT4 has a Pilot Sport Cup 2 tire. Your first priority should be to change the tires to a better compound. The latest Advan A052 tires from Yokohama are quite capable and with even more friendly road manner than the Cup 2. Sachs coilovers are enough to handle these tires in stock size, if you don't mind some body roll ...

[ajc209]

Quick Google will show shock dyno for the mi20 with a 250-300% change in low speed damping from -20 clicks to 0 clicks.

On stock 60N it feels to damped to me at -5clicks. I go faster on smooth tracks at -8clicks. On bumpy track I use -12 which is my fast road. These are front setting, I tend to get a couple clicks more at the back as they get softer.

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[Scracho]

Originally Posted by nikitopo

@Scracho Why don't you check the Sachs performance coilovers that have Front 38.50N/mm and Rear 42.50N/mm? These rates are more appropriate for track comparing to the front biased rates of Ohlins. Going much more stiffer it'll ruin the dual characteristic of your car being road and track friendly.

PS: I've seen your track video trying to outrun a Cayman GT4. You would not have a better chance with a Pilot Sport 4 tire, when the GT4 has a Pilot Sport Cup 2 tire. Your first priority should be to change the tires to a better compound. The latest Advan A052 tires from Yokohama are quite capable and with even more friendly road manner than the Cup 2. Sachs coilovers are enough to handle these tires in stock size, if you don't mind some body roll ...

I've looked into so many different setups and to be fair the reason I opted for the Ohlins was because they were a very good deal and I knew they might be too soft for the track, they would be good all round setup. Going to a full on "track" coilover seems pointless until you make that commitment that the car is a track car but until I gut it, cage it and stop driving it on the street I want a dual purpose setup.

LOL! That GT4 was playing nice with me and to be fair my tire pressures might have been too high on a cold day. The track wasn't holding any temperature either with the wind that day. I haven't decided on tire just yet, but it will be a sub 200 UTQG rating.


I'm going to throw dice in the wind here and try my luck with higher spring rates... Stay tuned!

[ajc209]

Originally Posted by Scracho

I've looked into so many different setups and to be fair the reason I opted for the Ohlins was because they were a very good deal and I knew they might be too soft for the track, they would be good all round setup. Going to a full on "track" coilover seems pointless until you make that commitment that the car is a track car but until I gut it, cage it and stop driving it on the street I want a dual purpose setup.

LOL! That GT4 was playing nice with me and to be fair my tire pressures might have been too high on a cold day. The track wasn't holding any temperature either with the wind that day. I haven't decided on tire just yet, but it will be a sub 200 UTQG rating.


I'm going to throw dice in the wind here and try my luck with higher spring rates... Stay tuned!

I'm on AD08Rs and love them. Not quite as good as Cup2s in the dry but a lot cheaper and not terrible in the wet.

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[strat61caster]

Originally Posted by oppiee

So just installed ohlins v2. With adjustments to everything recommended in the manual, my rears sit a little higher , about 1 cm than the front. Normal?

It depends on where you are measuring. If it's along the bottom of the car near the jack points I think you're good, the car has about that much rake (rear higher than the front) from the factory.

I don't remember what the fender heights are off the top of my head, but I think lowering evenly is the way to go.

[oppiee]

Thanks. I'll leave it as such. I followed the manual exactly. Looks pretty close lol

Thanks

Originally Posted by strat61caster

It depends on where you are measuring. If it's along the bottom of the car near the jack points I think you're good, the car has about that much rake (rear higher than the front) from the factory.

I don't remember what the fender heights are off the top of my head, but I think lowering evenly is the way to go.

[ajc209]

Originally Posted by strat61caster

I've found some suspension company 'support' are less technical support and more salesmen instructed to close tickets as fast as possible, at least in the US, not attacking the validity of your source, I hope he's right for the buyers of the mp20.

Just to be clear on this, it wast from support. It came from fairly high up at the Ohlins test center in Germany where the original MI20 was developed. The story about one of their test drivers not liking the setup may be true as they changed the spring rates for the MP20 based on feedback they'd received about them being too stiff.

1.9Hz natural frequency is generally considered quite high for a road car after all...

Last time I spoke to the person in question they were looking to releasing a kit with just top mounts allowing the user to pick spring rates within a certain range, but he did confirm they set the damping on the MI20 with room on both sides to allow significantly stiffer or softer springs without too much trouble.

RCE quite liked thed the MI20 on 8kg springs and standard valving and I believe they still ran them at 6-8 clicks for track...i.e. not full stiff....

There's the info anyway, people can ignore it if they want.

[Scracho]

Originally Posted by ajc209

Just to be clear on this, it wast from support. It came from fairly high up at the Ohlins test center in Germany where the original MI20 was developed. The story about one of their test drivers not liking the setup may be true as they changed the spring rates for the MP20 based on feedback they'd received about them being too stiff.

1.9Hz natural frequency is generally considered quite high for a road car after all...

Last time I spoke to the person in question they were looking to releasing a kit with just top mounts allowing the user to pick spring rates within a certain range, but he did confirm they set the damping on the MI20 with room on both sides to allow significantly stiffer or softer springs without too much trouble.

RCE quite liked thed the MI20 on 8kg springs and standard valving and I believe they still ran them at 6-8 clicks for track...i.e. not full stiff....

There's the info anyway, people can ignore it if they want.

I suppose there is only one way to find out... I'll keep you posted

[Shark_Bait88]

Originally Posted by ajc209

Just to be clear on this, it wast from support. It came from fairly high up at the Ohlins test center in Germany where the original MI20 was developed. The story about one of their test drivers not liking the setup may be true as they changed the spring rates for the MP20 based on feedback they'd received about them being too stiff.

1.9Hz natural frequency is generally considered quite high for a road car after all...

Last time I spoke to the person in question they were looking to releasing a kit with just top mounts allowing the user to pick spring rates within a certain range, but he did confirm they set the damping on the MI20 with room on both sides to allow significantly stiffer or softer springs without too much trouble.

RCE quite liked thed the MI20 on 8kg springs and standard valving and I believe they still ran them at 6-8 clicks for track...i.e. not full stiff....

There's the info anyway, people can ignore it if they want.

This sounds like a pretty similar situation to the SACHS coilovers I had, including the damping range to allow for stiffer springs (I was told a range up to 200lbs stiffer would be acceptable). Unfortunately I didn't have the time/money to ever test it out, and they got sold to someone who used them as more of an OEM+/road car performance suspension setup.

It's interesting how three of the largest, and most respected, Euro* performance suspension companies (Ohlins, KW, Bilstein, and SACHS) all ended up with similar spring rates on their road and track style coilovers for the application.

[strat61caster]

Originally Posted by Shark_Bait88

It's interesting how three of the largest, and most respected, German performance suspension companies (Ohlins, KW, and SACHS) all ended up with similar spring rates on their road and track style coilovers for the application.

What?

Sachs, KW & Bilstein ship a stiffer rear spring than front. Ohlins has always had a softer effective rear than front even on the mi20 kit, and they're swedish.

[ZDan]

Originally Posted by Shark_Bait88

It's interesting how three of the largest, and most respected, German performance suspension companies (Ohlins, KW, and SACHS) all ended up with similar spring rates on their road and track style coilovers for the application.

Ohlins is Swedish

[Shark_Bait88]

Originally Posted by strat61caster

What?

Sachs, KW & Bilstein ship a stiffer rear spring than front. Ohlins has always had a softer effective rear than front even on the mi20 kit, and they're swedish.

My point being of going to significantly softer rates, not necessarily the relation of front to rear rates. And I mistakenly used German when I really meant Euro, basically just in contrast to the various Asian suspension companies, or US rebox/custom adaptation setups, which seem to keep stiffer setups overall.