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eimarshall · 01-22-2024, 11:44 PM

Bits and pieces
I learned a lot last year. About fabrication, carbon fiber, aero, suspension, race seats, myself… and knew I wanted to learn more. So here is a breakdown of where the car sits, and ideas I have that could hopefully improve it.

I would love feedback from anyone with experience in any of these areas of interest.

Power: Yeah, I know I said I wasn’t doing that yet. But I’m not really diving deep. I picked up a ported LT2 intake and a 95mm TB. I might just do the LT2 for now to avoid a tune. We’ll see. Its low on my list of priorities.

Wheels/Tires: I loved the SC3Rs and will keep running them for now. I know they have more to give. I still have the RS4s for warmup/easy days. The third set of wheels are staggered (19x10/11) with OEM offsets. I am considering ditching them as I felt the 305s were a little pinched on the 10” front rim. Maybe experiment with a stickier staggered set? Not sure yet.

Brakes: I didn’t mention these above, but I am running a set of Girodisc front rotors and OEM discs in the rear. I was running ST43 pads until mid summer. Then I switched the front to DTC-60. The rears are wearing at half the rate of the front. I have yet to experience ice mode and I’m keen on avoiding it. I thought about going to ZLE brakes, but I’ve only just gotten into the 100TW tire realm. I might try some other pad compounds this year. (3.12s? XR1s?)

I am also running the SS brake ducts. I was thinking about making these out of carbon fiber, but I don’t think the resin I have could handle the temperatures anywhere near the brakes.

Suspension: I like the DSSVs and am running them at nearly the lowest setting. I might try to get the car “corner balanced” (even though only the front is adjustable) but I was pretty happy with it last year.

Alignment: Per khcoachings thread, I ran -3.5 front with 1/16” toe out and -2.8 rear with 1/32” toe in. The car is very stable, and the tire wear is looking really good. It is probably too much camber for the RS4s as I get some low-speed understeer with them in this setup. I will likely stick with this for now.

Interior: God, I hated installing those race seats. I think I had them in and out of the car 20 times. The driver seat sits on a planted base, Recaro sliders, and OMP uprights. It’s a little higher than I would like, but relatively low on my list of priorities. Maybe switch to a BK base? I really don’t want to go through that headache again.

The passenger seat is on a BK base and BK uprights (I think). This puts the seat way too far forward. I am trying to figure out how to mount the uprights further back on the base without covering up the base mounting holes. I may just throw some sliders in there and call it a day. Idk

Any recommendations? Thanks!

01-22-2024, 11:44 PM	#14
eimarshall Drives: 2018 SS 1LE Hyperblue Join Date: Jul 2017 Location: Lacey, WA Posts: 421	Bits and pieces I learned a lot last year. About fabrication, carbon fiber, aero, suspension, race seats, myself… and knew I wanted to learn more. So here is a breakdown of where the car sits, and ideas I have that could hopefully improve it. I would love feedback from anyone with experience in any of these areas of interest. Power: Yeah, I know I said I wasn’t doing that yet. But I’m not really diving deep. I picked up a ported LT2 intake and a 95mm TB. I might just do the LT2 for now to avoid a tune. We’ll see. Its low on my list of priorities. Wheels/Tires: I loved the SC3Rs and will keep running them for now. I know they have more to give. I still have the RS4s for warmup/easy days. The third set of wheels are staggered (19x10/11) with OEM offsets. I am considering ditching them as I felt the 305s were a little pinched on the 10” front rim. Maybe experiment with a stickier staggered set? Not sure yet. Brakes: I didn’t mention these above, but I am running a set of Girodisc front rotors and OEM discs in the rear. I was running ST43 pads until mid summer. Then I switched the front to DTC-60. The rears are wearing at half the rate of the front. I have yet to experience ice mode and I’m keen on avoiding it. I thought about going to ZLE brakes, but I’ve only just gotten into the 100TW tire realm. I might try some other pad compounds this year. (3.12s? XR1s?) I am also running the SS brake ducts. I was thinking about making these out of carbon fiber, but I don’t think the resin I have could handle the temperatures anywhere near the brakes. Suspension: I like the DSSVs and am running them at nearly the lowest setting. I might try to get the car “corner balanced” (even though only the front is adjustable) but I was pretty happy with it last year. Alignment: Per khcoachings thread, I ran -3.5 front with 1/16” toe out and -2.8 rear with 1/32” toe in. The car is very stable, and the tire wear is looking really good. It is probably too much camber for the RS4s as I get some low-speed understeer with them in this setup. I will likely stick with this for now. Interior: God, I hated installing those race seats. I think I had them in and out of the car 20 times. The driver seat sits on a planted base, Recaro sliders, and OMP uprights. It’s a little higher than I would like, but relatively low on my list of priorities. Maybe switch to a BK base? I really don’t want to go through that headache again. The passenger seat is on a BK base and BK uprights (I think). This puts the seat way too far forward. I am trying to figure out how to mount the uprights further back on the base without covering up the base mounting holes. I may just throw some sliders in there and call it a day. Idk Any recommendations? Thanks!