*The FL5 Track Junkie Thread*

[CG13]

Was this with rotation? Are you making a lot of power? With rotation last year and the lower camber (~-2.5° front) I actually got pretty even wear on all 4, with basically full use of the tread (as you can see in my picture).

I did one day with 6 sessions (about 100 track miles, or around 45 laps) and the wear I showed happened on session 7, track day 2 after only 7 hot laps and less than 20 minutes on track.

Checking the tires, I really didn’t see a need to rotate yet. I figured I’d do this track day and then rotate. 2 days on front and 2 days on rear would have been an okay result.

I’m not making a lot of power, just a light tune and a bunch of cooling mods.

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[BigBird]

For those of you with coilovers, what are you running for front camber?

Last year I was maxed at -2.5° on the plates due to OEM lower spring perch clearance issues, however now with coilovers I have a little over -3.5° if I max the plates. Generally I find more to be better on RWD cars, but after 8 sessions at CMP my front tires are roasted on the inside, which is definitely related to more difficulty putting power down at exit (a combination of the camber and the added power).

The picture below is after the 9th session on these tires, which was one session at a TNiA ?:

This is much faster inside shoulder wear than last year - I was always worried about wearing through the shoulder like this but never did and basically got pretty even wear across the whole tread. I'm planning to bring camber back down to ~-2.75° for Road Atlanta as I feel like I'm losing out on both wear and corner exit performance, but I was curious what others are doing.

I can also do torque limits by gear through Cobb so I may do that as well in 3rd and below.

I have the ball joints on max, about -3.7 with springs and have only been street driving, and lost almost 3/32" in 4k miles of driving on the inside edge. I think the sweet spot on this car is about -2.8 to -3.

Just theorizing, the higher spring rates vs last year could be playing an issue as well, as the front is probably biting more, so you can get on the power earlier. and the lower offset and wider wheels pushes it further away from the centerline, so it adds wheelspin.

 

[simpleisbest]

It's possible, I don't know enough about the changes of toe with load on this platform, although I don't know that it would be much different than last year? I ran the same tire setup, just with different springs and dampers (and with my rates I should be better-controlled vs. last year). I do know for sure I struggled more with corner exit power delivery which definitely would be consistent with the wear, so we'll see how this weekend goes and go from there.

Are still using offset ball joints to achieve the majority of that negative camber?
If so, I'd suggest giving a try at resetting them back to "stock" position and then getting all your negative camber from the top mount as supposedly the Type R has a "near zero" scrub radius.

 

[Rexpelagi]

Are still using offset ball joints to achieve the majority of that negative camber?
If so, I'd suggest giving a try at resetting them back to "stock" position and then getting all your negative camber from the top mount as supposedly the Type R has a "near zero" scrub radius.

Nope, no offsets - I can get plenty out of the camber plates (clearly) and that helps with tire fitment as well.

 

[simpleisbest]

Nope, no offsets - I can get plenty out of the camber plates (clearly) and that helps with tire fitment as well.

oh wow then that is super surprising, as your wear seems to be so much more inboard then what I experienced with 275/35-18 on 18x9.5 +53 wheels and only -1.8 negative camber per side. My wear was more significant on the center of the tire vs yours appear to be more inboard.

 

[Rexpelagi]

oh wow then that is super surprising, as your wear seems to be so much more inboard then what I experienced with 275/35-18 on 18x9.5 +53 wheels and only -1.8 negative camber per side. My wear was more significant on the center of the tire vs yours appear to be more inboard.

I was at -3.8° with plates so I still had a lot of negative camber, and more power than last year, so it makes sense that wear was accelerated. We'll see how it goes this weekend as I get stomped by 10+ AWD cars ? ? ?.

 

[J1Avs]

Cobb AP acquired . Hand delivered the ECU to Cobb in Austin as I happened to be there for work.

Protuning commencing from a new Honda player, but widely known in the A90/GR86 Track Game

 

[Rexpelagi]

For interested parties...

So, it was kind of a mess - session 1 yesterday had 3 cars off on lap 1 that stayed there for the rest of the session - aka, 3 local yellows in different areas (mostly mechanicals) - total mess. However, this wasn't my only issue - we tried e30 for this event (because super fast back straight), but with the sustained long 5th gear pull the HPFP was losing pressure - dropped to 1900psi from ~3000psi and threw the car into limp mode into T10.

I had no time in session 1, so I ended up at the back of group C for session 2 (aka the slowest cars), and had to navigate around a bunch of Honda Fits and other cars just to get a lap, which is the lap I ultimately stood on (1:38.3 - which I couldn't get a video of because the camera literally fell over onto the rear carpet) - I had one that was .4s up into 10 that suffered a fuel pressure drop again (only down to 2500psi this time), but it killed it, so not even a great time here.

Session 3 I was back up to group B and we made more changes to reduce boost by ~4% in gear 5/6, but it was hotter and I ran into the same issue and came into the pits on the first flyer to key cycle it after limp, but they were behind on the schedule and checkered the session short before I could even get around for another flyer.

I had Brian make a big swing after session 3 (because at this point I didn't care if I lost a few mph I just needed to not hit limp), but it wasn't to be since it rained for sessions 4-6 today.

I did at least go out in session 5 today and verify we finally got the tune working, as it didn't go into limp, and I still managed 141mph into 10 (fastest yesterday was 144 and T7 was garbage in the wet, so I think realistically I didn't lose anything meaningful), just didn't have it sorted when I needed it. Unfortunately, it was just something that would never be detected on a street pull or dyno run. @JST Performance (Brian) thankfully was incredibly supportive and helpful and did 4 revisions for me on site (despite also running GLTC this weekend and having to do his own stuff as well), just the nature of doing a new platform for actual track use. I can't thank him enough for the on-site support!

I did have some fun in the wet though!

 

[m3bs]

Where’s that 38 lap video?

 

[Rexpelagi]

Where’s that 38 lap video?

In my ongoing quest for a better camera position I tried a mount that fits into the rear cup holder. It seemed secure enough at first but all the curbing/cornering caused a lot of side loading that wobbled it out of the cup holder 7min in, just in time to miss my "fast" lap.

After it happened I tried snugging it up more but after moving it left and right a few times it easily worked its way out so I scrapped it and went back to my other mount.

Honestly the lap wasn't that good anyway - there was a ton of traffic and there was an easy 1-1.5s out there with an actual clean lap, so I'll just need to try again another time lol.

 

[Rexpelagi]

Where’s that 38 lap video?

Here you go ? since you asked... lol. You can see about the first 35s of the lap at the end of this video, and as you can see from the start of the lap, there was *a lot* of time still out there by not being held up in T12 and T1 alone.

 

[m3bs]

Lots of traffic, for sure.

 

[Hailw00d]

I also had the cup holder mount come loose at NCM from all the curbing there. It has to be *really* snug to keep from working its way loose but ultimately that's definitely a weak point of that setup.

I'll be trying it again at Barber in a couple weeks - if it has issues there I'll probably fall back on the 3D printed seat mount I was planning on designing before I found the cup holder solution.

 

[Rexpelagi]

I also had the cup holder mount come loose at NCM from all the curbing there. It has to be *really* snug to keep from working its way loose but ultimately that's definitely a weak point of that setup.

I'll be trying it again at Barber in a couple weeks - if it has issues there I'll probably fall back on the 3D printed seat mount I was planning on designing before I found the cup holder solution.

Ya, I picked it up after watching your video. It's definitely a slick concept, and the positioning is good, but even after it fell I really tried to clamp down on it and it still seemed like it would wobble out after testing it a bit more, and I didn't want to chance it again and lose more video.

I' was running mine with a 2nd arm for a higher angle, which helps for the camera but doubles the lever arm obviously, so that wasn't helping either.

 

[Rexpelagi]

Lots of traffic, for sure.

That's what happens when you start from grid spot 26 in the Sundae Cup heat. ?

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