Obioban's 2005 IR/IR Coupe

[duracellttu]

Curious what motivated you to move away from the Ohlins if you were happy with the setup after adopting flat ride spring rates.

[S14]

The 17x10 Apexs fit with space to spare over these. I kind of want to try the 17 x 9.5 et35s, as I don't actually like the et25 setup.

17x10 et25 brake clearance:

This made my night!

How do you like the M3 with 275/40/17 NT01's?

[Obioban]

I finally made the decision to join you and jump from the TCK SA setup I have to the FCM stage 3. Been talking with Shaikh for the past couple of weeks about my setup. I went with flat ride spring but the dampers just could manage the increased spring rates so here I am.

Where did you end up sourcing the H&R set? I’m trying to find best pricing right now, so I can order and have them drop shipped to FCM. Were lead times bad?

ECS had a sale on them, so I hoped on it.

Took ~2 weeks to arrive.

[duracellttu]

And the H&R coilovers arrived, that I'll be sending off to Fat Cats Motorsports for reworking. I go back and forth between being super excited and feeling like I've gone off the deep end, spending $5000-6000 for a non adjustable Bilstein setup

I finally made the decision to join you and jump from the TCK SA setup I have to the FCM stage 3. Been talking with Shaikh for the past couple of weeks about my setup. I went with flat ride spring but the dampers just could manage the increased spring rates so here I am.

Where did you end up sourcing the H&R set? I’m trying to find best pricing right now, so I can order and have them drop shipped to FCM. Were lead times bad?

[Obioban]

I'm kind of excited for the extra clearance, as I was having to clean out track goobers getting stuck between my caliper and wheel between sessions:

[Obioban]

I'd like to hear your feedback on the 996/CSL brakes as I too want to FCP as much of my track consumables as possible! I'd really like to try out a set of 17x10 apex wheels on the 996 brakes to see if you can run continental take-off's or NT01's. I used to get 12-15 track days on NT01's on my E30 M3 which makes r-comps relatively affordable (compared to 3 days on RE71r's).

The 17x10 Apexs fit with space to spare over these. I kind of want to try the 17 x 9.5 et35s, as I don't actually like the et25 setup.

17x10 et25 brake clearance:

[S14]

Downgraded the brakes to 996 calipers with ZCP/CSL/Z4M rotors (so I can FCP my track rotors and pads). Not going to sell the brembos till I do a track event on these, but on the street they feel pretty indistinguishable from the Brembos. Which makes sense, since they're rigidly mounted brembo calipers with the correct bias/volumes for the chassis, but I still had some fears:

I'd like to hear your feedback on the 996/CSL brakes as I too want to FCP as much of my track consumables as possible! I'd really like to try out a set of 17x10 apex wheels on the 996 brakes to see if you can run continental take-off's or NT01's. I used to get 12-15 track days on NT01's on my E30 M3 which makes r-comps relatively affordable (compared to 3 days on RE71r's).

[Obioban]

Was the spring perch above your tire with your Ohlins setup?

Note entirely:

[Obioban]

Downgraded the brakes to 996 calipers with ZCP/CSL/Z4M rotors (so I can FCP my track rotors and pads). Not going to sell the brembos till I do a track event on these, but on the street they feel pretty indistinguishable from the Brembos. Which makes sense, since they're rigidly mounted brembo calipers with the correct bias/volumes for the chassis, but I still had some fears:



The front sway bar mount points tore off, so the car's off getting fixed for that (I don't weld well enough to be happy with my work on my car):



And the H&R coilovers arrived, that I'll be sending off to Fat Cats Motorsports for reworking. I go back and forth between being super excited and feeling like I've gone off the deep end, spending $5000-6000 for a non adjustable Bilstein setup

[r4dr]

Was the spring perch above your tire with your Ohlins setup?

[Obioban]

Turns out eibach makes a 6” long, 2.5” ID, 375 lb/in barrel spring, that they don’t offer except through GC... which will let me live my OCD to two decimal places.

(going with barrel springs up front because I want to have the spring perch above the tire, so I don't need as aggressive wheel offsets, but then need all the travel I can get (as that pretty much limits me to a 6-6.5" long spring).

[Obioban]

Wow. Definitely custom.

Are corner weights the real starting point for flat ride? I have fooled around with the spreadsheet, but I guess I need to see if FCM has posted a "how to use the spreadsheet" video.

Jesse

Corner weights are a good place to start, though probably not necessary if your car is close to stock. If you can get them, though, you'll be more accurate.

[D-O]

Wow. Definitely custom.

Are corner weights the real starting point for flat ride? I have fooled around with the spreadsheet, but I guess I need to see if FCM has posted a "how to use the spreadsheet" video.

Jesse

[Obioban]

I am wondering why you did not just re-valve the Ohlins dampers to match the required flat ride spring rate. Does FCM do more than just valve the dampers to match the springs?

Jesse

Yeah, he does a bunch more-- they'll be pressurized and valved to my corner weights and spring rates, bump stop tuning,and I'm having him add his KBO (similar but I believe superior to Ohlin's DFV) and ripple reducer.

[D-O]

I am wondering why you did not just re-valve the Ohlins dampers to match the required flat ride spring rate. Does FCM do more than just valve the dampers to match the springs?

Jesse