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      10-24-2018, 06:15 PM   #23
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On mine there wasn't 2.5" of travel total with the shocks off the car. I installed them fyi, but I'm 101% sure they were installed right. (I used to be in the industry and also built and raced cars for almost 15 years) (Install really doesn't matter as even off the car fully uncompressed there wasn't 2.5" travel.

It sounds like the rear shocks may be different. Did your's look like mine in the picture, or more like the other picture posted with significantly more travel?
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      10-24-2018, 08:08 PM   #24
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Quote:
Originally Posted by blackey View Post
On mine there wasn't 2.5" of travel total with the shocks off the car. I installed them fyi, but I'm 101% sure they were installed right. (I used to be in the industry and also built and raced cars for almost 15 years) (Install really doesn't matter as even off the car fully uncompressed there wasn't 2.5" travel.

It sounds like the rear shocks may be different. Did your's look like mine in the picture, or more like the other picture posted with significantly more travel?
I’m not doubting your work. I addressed this above. They appear to be different. Install directions changed, and mine looked like the other pics. The 2.5 inches I quote is a very conservative measurement. Given that I was using the pitch method that was the low end with 4.5 being the high end. I don’t understand why yours ended up so different from mine but mine don’t have the same issue you had.
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Last edited by tke743; 10-24-2018 at 08:19 PM..
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      03-23-2019, 12:59 AM   #25
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Quote:
Originally Posted by blackey View Post
I'll bet you $50 if you take off the dust boot there is less than 1/2" travel between the bumpstop on the shock and the shock body. I was surprised when I looked at mine and I wasn't as low as you are. The spring adjuster really isn't the issue. There is plenty of travel there, but the shock is a very different story. And that's with the shock threaded all the way up in the housing BTW as there is adjustment there, but the rear shock body is simply too long.

Sorry I know I'm coming off a bit strong. I generally love Ohlins, I've had them on several cars, but on the F8x platform they did a pretty poor job. The issue is the shock bodies are simply too long. I "think" they took the body from the E92 (or some other car) and just reused them with new hardware. This made the housings too long, but was easy for them. To combat the issue they used very high spring rates so the shocks don't bottom out as quickly. We all complained about the super high spring rates (Remember they were 1300lbs/in to start), but those of us who changed to 900's in the rear found out it didn't ride any better. The reason is there isn't any travel before the bumpstop engages, and the bumpstop spring rate is what you really are getting.

I've included a picture from the set I had. With full travel you can see the rears have just about 1.75" of travel maximum (area marked with the two red lines). As soon as you compress a spring which is inboard of the shock (so the shock will travel farther than the spring) you can see what's going to happen. The shock is going to sit on the bumstop.
Sorry to bring this thread back up, but I am considering Ohlins as well and your point really had me thinking.

The odd thing is is that if you look at all the actual photos that EAS takes of the customers Ohlins kits, the distance between the bumpstops and shock body all seem longer than what your picture indicated. I'm starting to wonder if you got a defective shock or that the newer Ohlin kits address this issue? See screenshots taken from EAS' posts of the Ohlins RT
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      03-27-2019, 09:26 PM   #26
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Can't tell you honestly. I know the box showed they were for the F80 M3. I'd really like to see someone else install without the dust boot to see, but that's a big ask and a lot of work to see how much travel there is.

EAS is a great shop though.
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      03-31-2019, 10:50 PM   #27
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Quote:
Originally Posted by jpy1980 View Post
Sorry to bring this thread back up, but I am considering Ohlins as well and your point really had me thinking.

The odd thing is is that if you look at all the actual photos that EAS takes of the customers Ohlins kits, the distance between the bumpstops and shock body all seem longer than what your picture indicated. I'm starting to wonder if you got a defective shock or that the newer Ohlin kits address this issue? See screenshots taken from EAS' posts of the Ohlins RT


That picture makes no sense unless Ohlins redesigned their rear shocks for the F8X.
Mine looks like blackey's, with the shaft mounted down on the A arm.
I did my own install.
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      04-11-2019, 01:41 AM   #28
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I had my TCK DA coilovers installed by TC Kline himself. His recommended setup with RE71Rs for primarily track use was his street settings and spring rates. This is pretty soft. The only “track” setting was to set the rear shock as low as possible while keeping 1” of travel before hitting the bump stop. Then the front of car is supposed to be 3/4” lower than rear based on the rockers (not wheel well). And even though the car is quite low, it still looks like a whale at the track Akon side Corvettes and Porsches.

Setup sheet attached. The stiffer setup is mainly used when running full slicks that can take advantage of the stiffer setups.
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      02-21-2020, 01:39 PM   #29
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Ohlins + camber plates?


Hey Tke743... are you still tracking your car and using it as a DD? ...Still happy with the Ohlins and have you made any other changes to the setup. I have the same car and am considering the Ohlins coilovers + Vorshlag camber plates...
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      02-21-2020, 04:26 PM   #30
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There is two different versions of the R&T kit for the F8x cars. The old version is BMS MP40 and the new version is BMS MR 40. The thread design is different between the two versions and it wouldn't surprise me if they modified the rear shocks on the newer version and shortened the shock body 30mm.
I complained om my very stiff rear suspension and i think the reason was that i hit the bumpstops. I sent the shocks and springs to Öhlins here in Sweden and they modified the shocks by shortening the dampers 30mm and give me the 190 N/mm springs. All for free of course. It's way better now. Still quite stiff but not in a bad way. Dampers are amazing! I run mine at 20 clicks out at the moment but will laborate with it when spring comes. Here in Sweden Öhlins do not include softer springs with the kit as they haven't tested it with the dampers as they are valved now.
If i want softer springs i can buy that from them but that is on my own risk as they say as the dampers aren't certified with them. On a bit uneven country roads the suspension is amazing. I don't understand how you can get so high springrates to feel that smooth but it's all in the damper technology.
Another Swedish World class Product .
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Last edited by M 4 FUN; 03-01-2020 at 01:29 PM..
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      02-21-2020, 05:02 PM   #31
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Rear looks higher than stock.
Did you drop front and rear. How much?
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      02-21-2020, 05:34 PM   #32
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Quote:
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Rear looks higher than stock.
Did you drop front and rear. How much?
It's lower than stock but i don't remember how high it was stock but i am 83mm from rim edge to fenderlip at the back and 74mm at the front. The Surface is uneven outside my garage so the Picture lies a bit.
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      02-22-2020, 12:20 AM   #33
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I am getting the Ohlins installed next week, they were revalved and I will be running them with 70N/mm and 140N/mm Swift Springs.
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      02-23-2020, 02:56 AM   #34
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Quote:
Originally Posted by silverstar335 View Post
I am getting the Ohlins installed next week, they were revalved and I will be running them with 70N/mm and 140N/mm Swift Springs.
That will make a smooth ride. Not as track focused but i Think it will be great. What Wheels/tires do you run?
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      02-23-2020, 09:13 PM   #35
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Quote:
Originally Posted by M 4 FUN View Post
Quote:
Originally Posted by silverstar335 View Post
I am getting the Ohlins installed next week, they were revalved and I will be running them with 70N/mm and 140N/mm Swift Springs.
That will make a smooth ride. Not as track focused but i Think it will be great. What Wheels/tires do you run?
I have two sets:

Street - MPS4
20x9.5 - 275/30/20
20x11 295/30/20

Track - RE71R
18x10 275/35/18
19x11 305/30/19
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      02-24-2020, 11:10 PM   #36
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Ultimately, I am hoping for better than stock feel both on the street and at the track.
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      02-25-2020, 09:11 AM   #37
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I'm sure you will achieve that. I feel that my car is a bit stiffer but it's better and feels much more solid than with the stock softer but in some way harsher feel over railroad crossing and other Sharp edges. And the bouncy feeling i had Before in Comfort mode is also gone, even with 22 clicks out at the rear and 20 up front.
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      07-04-2020, 04:23 PM   #38
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Quote:
Originally Posted by silverstar335 View Post
Quote:
Originally Posted by M 4 FUN View Post
Quote:
Originally Posted by silverstar335 View Post
I am getting the Ohlins installed next week, they were revalved and I will be running them with 70N/mm and 140N/mm Swift Springs.
That will make a smooth ride. Not as track focused but i Think it will be great. What Wheels/tires do you run?
I have two sets:

Street - MPS4
20x9.5 - 275/30/20
20x11 295/30/20

Track - RE71R
18x10 275/35/18
19x11 305/30/19
Hey mate, how did you go with the revalved ohlins and softer springs? Can you share your review of the setup?
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      07-08-2020, 06:52 PM   #39
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Got mine installed last week. What a fantastic upgrade over edc and springs.





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      07-08-2020, 07:11 PM   #40
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Quote:
Originally Posted by Intensemojo View Post
Got mine installed last week. What a fantastic upgrade over edc and springs.

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View post on imgur.com
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[IMG]
View post on imgur.com
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How comfortable are they on the street?
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      07-08-2020, 08:33 PM   #41
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While I’m still dialing everything in. The middle settings of -15F and -30R we’re close to sport/sport + without the crappy bounce. I’ve since dialed it back a few clicks on both ends and I’d say it’s now much like sport mode but with all the benefits of a world class Coilover.
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      07-09-2020, 06:24 AM   #42
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Quote:
Originally Posted by Intensemojo View Post
While I’m still dialing everything in. The middle settings of -15F and -30R we’re close to sport/sport + without the crappy bounce. I’ve since dialed it back a few clicks on both ends and I’d say it’s now much like sport mode but with all the benefits of a world class Coilover.
30 clicks out?
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      07-09-2020, 07:50 AM   #43
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60 clicks of adjustment in the rear. So middle setting.
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      07-12-2020, 01:49 AM   #44
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Just offering personal experience in case anyone is considering Ohlins. Last year I tracked my M2C with the original setup from Ohlins. In low-speed corners, I felt the car still rolled a bit much. After doing some research I came across Barry at 3DM motorsport and we decided on a custom setup with stiffer springs and valving to match those springs. The car feels amazing on track now, especially in mid-corner where the dampers are not in motion. For reference, the original springs were 9kg/mm and 19kg/mm, and the new setup is with 12kg/mm and 22kg/mm. I know some complained about the original springs to be too stiff but I never found that to be the case; it was just right for the street and too soft for the track. A few of my friends who are racing in Europe with their M2s also agree with this. I plan on writing a detailed post after some more testing, but for anyone who is considering Ohlins I recommend giving Barry a call.
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