03-02-2019, 03:39 AM | #589 |
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Strange that it isn't smoother than the factory setup. Sachs coilovers were definitely smoother on the softer settings and close to the comfort level of the Forester tS suspension. Factory setup is improved comparing to the '15 suspension or is the difference of linear vs. progressive springs?
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03-02-2019, 02:50 PM | #590 | ||
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Ohlins in Sweden answered me this suspension is last years setup, I should show this e-mail to my dealer and order the 5K springs in the meantime they sent me the 4K springs...fingers crossed. There is no manual for the 4K springs all around, in my manual they just recommend 4K springs (but sell 3K) for the rear without mentioning preload or ride height. Quote:
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03-02-2019, 03:21 PM | #591 | |
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Check out this manual, it is for 4k/3k https://www.ohlins.com/app/uploads/w...MI_SUSMP20.pdf Spring preload 32mm front page 4 Spring preload 28mm rear page 8 here's a manual for the 4k/4k setup https://www.vividracing.com/productdocs/MI_SUSMP21.pdf spring preload 27mm front page 4 spring preload 38mm rear page 8 I have the "newest" US 5k/5k setup https://world.ohlins.com/app/uploads...MI_SUSMP21.pdf spring preload 20mm front page 4 spring preload 20mm rear page 8 I see now why you are having trouble getting the right info I think the bottom line is that these are just recommendations from Ohlins and that you will probably need to experiment to get what works for you. At least it is a place to start. These look like all official manuals that Ohlins produced at some point or another and they are for specific springs so hopefully this will get you a good start. I am using the 5k/5k setup as recommended with no changes at 15 clicks all around. I have not bothered to do any more fine tuning but it's good enough as it is for me. Hope this helps!! |
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03-02-2019, 05:30 PM | #592 |
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@antmit thanks for the manuals, actually now I am more confused, my manual is the second one but the suspension came with 4/3K springs!
By the way... -in first case for 4K fronts Ohlins suggests 32mm preload, in second case for the same springs 27mm! "With both the preload and height adjustments in their standard positions, the vehicle is lowered approximately 20 mm when compared to the original suspension." ...impossible with 5mm preload difference! -in first case for 3K rears Ohlins suggests 28mm preload while in second case for 4K much more at 38mm! That's at least weird and changes completely the bump travel, I've set mine as per second manual 4/4K setup while on 4/3K springs. I'll keep my current settings with the new 4K rears and see how it goes. |
03-22-2019, 01:01 PM | #593 | |
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Recently received my SUSMP21 kit here in the UK and have exactly the same issue ref the spring spacers and the instruction sheet anomaly The kit I ordered stated 40/30 spring rates and that's what I got BUT........ the instructions in my kit (issue date 30 Jan 2018) and preload data are for 40N/mm spring rates front and rear! Huge inconsistency in data and hugely confusing!. If you look at the Ohlins site for the BRZ here in the UK it states BRZ model years covered are 2012 to 2019 yet the product info link states 2012-2018 and and shows 40/30 spring rates. HOWEVER, click on the mounting instruction link and they are for spring rates 50/50 (these show updated issue date 01 Nov 18) My supplier is confused, I am not amused and my tuning guys cannot fit until we know WTF is going on? The explanation.......I am hoping, is that there is another updated mounting instruction sheet for my 40/30 with the preload data AND instructions to fit the 4 x rubber spring spacers and the 2 x plastic spacers Spoke to Ohlins direct today and they will need to look into it on Monday Not best pleased as I have had them for 14 days and booked in for fitment next week |
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03-22-2019, 01:18 PM | #594 |
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They should just make one manual (and keep it uptodate with future changes too) with table of preload settings with several springs so that it can be used for all possible combinations and remove all old pdf-s to fix current instructions mess.
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03-22-2019, 01:27 PM | #595 | |
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I agree but looks like the kits contents have been changed slightly also (spring spacers) |
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03-22-2019, 02:30 PM | #596 | |
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If you read back this thread someone posted all the manuals for each spring set. I ended with the OEM suspension again but this is due to other reasons, the limited rear suspension travel of Ohlins. During our conversations they told me that both 4/3K, 4/4K and 5/5K kits have exactly the same valving so it's up to you what springs you'll use! https://scontent.fath7-1.fna.fbcdn.n...04&oe=5D139358 *I sell brand new in their packaging the 2 rear 4K springs they suggested me to buy, if you are interested Last edited by JIM THEO; 03-22-2019 at 02:56 PM. |
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03-25-2019, 07:37 AM | #597 | |
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Thanks Jim I think I need to have a word with my supplier |
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09-28-2019, 10:17 PM | #598 |
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Seems this thread is the best place to ask...
What alternatives to the Whiteline FSB end links have people used to avoid shearing off the attachment bracket on the coil over? After trading emails with Brian @Ohlins USA, I'm pretty sure others have experienced similar failures from the end links acting like a fulcrum of unintentional force on the bracket. (I tried to attach a pic of the damage but size is too large. Will attempt to address that tomorrow). Basically I'd love a suggestion which is essentially the Whiteline solution, but doesn't make contact with the coil over body under "whatever those conditions are." ;-) ...Narrow and stiff would be perfect Thx!
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10-01-2019, 11:23 PM | #599 | |
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10-02-2019, 09:34 AM | #600 |
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Thanks for that info. I ran the car "as is" for two days at Watkins Glen this past weekend. No failures, but now the passenger side shows a TON of contact and grinding where it looked fine before. The recently replaced driver side only shows a touch of contact.
Any chance that "other bracket" failing with the Hotchkis set up was a function of fatigue/wear experienced before making the switch from the Whiteline links? If you had a opportunity to take a picture of that fabrication to post here or send to me, I'd greatly appreciate the info. I was considering simply grinding down the corner of the coil over, but that was more of a last resort.
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10-05-2019, 12:51 AM | #601 |
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It's possible there was a fatigue issue with the last bracket, but I inspected it closely when swapping the endlinks and didn't see any visible cracks at the time. I decided it just wasn't worth the risk anymore, since if one broke under hard cornering it could theoretically create a snap oversteer situation and a crash. I don't have a photo handy of the reinforced brackets, but it's really just some additional metal welded to the Ohlins bracket to thicken it up. Not particularly elegant. Just make sure not to thicken the section where the bolts attach it to the strut so you still have enough thread engagement. In my experience they all crack near the bend in the middle, so I'd focus on adding material there.
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03-06-2020, 08:16 AM | #602 | |
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The standard spring preload is 27 mm from a free length of 230 mm, giving 203 mm 203mm and there would be no preload whatsoever on a 200mm spring. It was suggested to me to do a 24mm preload. I ended up with a 20mm preload from a free length of 200mm. I had it out for one hour and it's not bottoming out on the rear when taken over the same roads. I am at 8 clicks. More testing to follow. |
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