Ohlins updated it's R&T coil-over for our car

[teppei]

The extra 30mm preload to prevent bottom out from soft spring rate.

[ajc209]

Originally Posted by teppei

The extra 30mm preload to prevent bottom out from soft spring rate.

Yes its to give enough bump travel on the soft rates.

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[emirdtm]

Originally Posted by ajc209

It doesnt need a revalve. The MI20 and MP20 have the same valving/damping.

Thats from Chris Witter of Ohlins, who developed the MI20 at the ring.

That’s awesome news thx buddy so I can run F9K R7K no problem

[ajc209]

Originally Posted by emirdtm

That’s awesome news thx buddy so I can run F9K R7K no problem

9k might be a bit high.

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[oppiee]

Hey guys for the MP20, is there a difference between front an rear springs?

[strat61caster]

Originally Posted by oppiee

Hey guys for the MP20, is there a difference between front an rear springs?

Yes, 40N/mm & 30N/mm stiffness. There are markings on them, based on pictures of the old kit there should be a "/40" on one pair and a "/30" on the other pair.

Ohlins puts the 30N spring on the rear, you can actually see the part number on the diagrams in the Ohlins instructions.

https://www.ohlins.eu/en/products/au...gt86-2012--39/

[JIM THEO]

Originally Posted by nikitopo

Did you have a chance to test the new kit or is it just a matter of preference on spring rates? And if you say that you need much higher rates, how can you explain the spring rates of the tS car with the 18'' wheels and the PS4 tires? I calculated them to be around 3.5k/3k. Overall, 15 percent stiffer in front and 3 percent stiffer out back from the '17 rates. I cannot recall anyone in the track tests saying that it didn't ride well or that there was excessive body roll.

As you say don't judge a coilover from spring rates only, although 3K rears are soft for track use anyway, even Ohlins suggest for such use 5K F/R springs in their site.
On the other hand factory pink STI springs that the tS Bilsteins come with are 5K front 4K rears and if I am not wrong latest tS version from Sachs use same springs only dampers have changed:
https://www.nengun.com/sti/coil-springs
https://www.sti.jp/parts/subarubrz_z.../ST20330AS000/

[strat61caster]

Originally Posted by JIM THEO

As you say don't judge a coilover from spring rates only, although 3K rears are soft for track use anyway,

3kg/mm is softer than the OEM spring on the first year cars.

https://www.ft86club.com/forums/showthread.php?t=10416

[JIM THEO]

Originally Posted by strat61caster

3kg/mm is softer than the OEM spring on the first year cars.

https://www.ft86club.com/forums/showthread.php?t=10416

I agree that's why I mention it, probably they want to make it tale friendly and more rear stable while the 4K F springs give better nose response but little understeer, if you visit their page they suggest 5K springs F-R for track use.

[blown]

What changed from mp20?