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Search took 0.07 seconds. Search: Posts Made By: ZDan
Forum: BRZ Second-Gen (2022+) -- General Topics 11-04-2024, 07:27 PM
Replies: 8
Views: 474
Posted By ZDan
What you want at the track is *balance*. Car was...

What you want at the track is *balance*. Car was set up to be neutral, but some tracks (like Thompson CT) are kinda "understeery" while others (like NHMS NH) are kinda "oversteery".

In any case,...
Forum: BRZ Second-Gen (2022+) -- General Topics 11-04-2024, 07:47 AM
Replies: 8
Views: 474
Posted By ZDan
215/40-18 fronts with 225/40-18 rear is not going...

215/40-18 fronts with 225/40-18 rear is not going to be a problem at all...


On my 1st-gen I ran 235/45-17 fronts with 245/40-17 rear A052s at the track, and also swapped them and ran 245 fronts...
Forum: GR86 General Topics (2nd Gen 2022+ Toyota 86) 10-30-2024, 05:43 PM
Replies: 8
Views: 1,196
Posted By ZDan
I would not bet against the OEM header for power....

I would not bet against the OEM header for power. But for midrange, losing the 1st cat and going 4-2-1 with long 2-1 tubes should gain you some midrange. But honestly $$$ might be better spent...
Forum: GR86 General Topics (2nd Gen 2022+ Toyota 86) 10-30-2024, 08:22 AM
Replies: 8
Views: 1,196
Posted By ZDan
I think what you might *really* want to consider...

I think what you might *really* want to consider is EL vs. 4->2->1. I think the only benefits of UEL are 1. easier to design and fit a UEL header underneath a flat engine and 2. "boxer rumble".
...
Forum: Tracking / Autocross / HPDE / Drifting 10-23-2024, 03:05 AM
Replies: 27
Views: 2,330
Posted By ZDan
It's a treadwear rating, lower number doesn't...

It's a treadwear rating, lower number doesn't necessarily mean more grip. Tire manufacturers don't really have any requirements on how they rate for treadwear, and of course the super-200s are given...
Forum: Tracking / Autocross / HPDE / Drifting 10-22-2024, 02:39 PM
Replies: 27
Views: 2,330
Posted By ZDan
FWIW, known fast veteran driver was only 0.5s...

FWIW, known fast veteran driver was only 0.5s faster on these Hoosiers vs. NT01s at NHMS (South Oval config) in his well set-up and fast C5 Z06. And only for a few laps in their first session. ...
Forum: BRZ Second-Gen (2022+) -- General Topics 10-14-2024, 02:25 AM
Replies: 56
Views: 4,616
Posted By ZDan
CT4-V Blackwing

CT4-V Blackwing
Forum: Tracking / Autocross / HPDE / Drifting 10-11-2024, 09:18 AM
Replies: 10
Views: 868
Posted By ZDan
Great test, but I have to wonder if the 225/45-17...

Great test, but I have to wonder if the 225/45-17 advantage might be partially due to gearing. 215/45-17 and 245/40-17 are the same diameter, 225/45-17 is taller. If the course favored taller...
Forum: Tracking / Autocross / HPDE / Drifting 10-10-2024, 02:14 PM
Replies: 10
Views: 868
Posted By ZDan
Don't have any lap time data on 275 vs 255 on an...

Don't have any lap time data on 275 vs 255 on an FT86, but I didn't lose much if anything in terms of lap times going from 245/40-17 on 17x9 to 225/45-17 on 17x9...

I would not bet against...
Forum: BRZ Second-Gen (2022+) -- General Topics 10-02-2024, 11:34 AM
Replies: 5
Views: 955
Posted By ZDan
Put it this way, I was tracking a 550hp LS3 FD...

Put it this way, I was tracking a 550hp LS3 FD RX-7, and after a year competing in time trials with my '17 BRZ, I sold the RX-7. Yeah, 160mph on Andretti Straight at Mosport is cool and all, but I'm...
Forum: Engine Swaps 10-01-2024, 09:01 AM
Replies: 365
Views: 107,326
Posted By ZDan
FA24 heads can breathe in 20% more displacement...

FA24 heads can breathe in 20% more displacement without choking at the same 7000rpm power-peak, and pull to the same 7400rpm rev-limiter as the FA20, I'd be very surprised the FA20 heads will give...
Forum: Suspension | Chassis | Brakes -- Sponsored by 949 Racing 09-30-2024, 05:41 PM
Replies: 16
Views: 1,318
Posted By ZDan
Really happy with the RCE SS2s on the BRZ. Also...

Really happy with the RCE SS2s on the BRZ. Also really happy with Xidas on the MX-5! Biggest difference is the Xidas are somewhat smooover on the street. But the RCE SS2s are also very streetable...
Forum: Tracking / Autocross / HPDE / Drifting 09-26-2024, 10:33 AM
Replies: 15
Views: 1,262
Posted By ZDan
For ability to maintain control while...

For ability to maintain control while slipping/sliding, A052, *especially* in the WET (at least with some tread depth)! They are just amazing, all others I have tried have fallen way short. In...
Forum: Tracking / Autocross / HPDE / Drifting 09-22-2024, 05:25 AM
Replies: 27
Views: 2,330
Posted By ZDan
Me and two frenz ran 255 A052s on an S2000 for...

Me and two frenz ran 255 A052s on an S2000 for two 3-hour endurance races earlier this year. I set the fastest lap of the event on the 100th lap on day one. They lasted the event no prob! I...
Forum: Tracking / Autocross / HPDE / Drifting 09-10-2024, 06:55 PM
Replies: 91
Views: 6,609
Posted By ZDan
So be aware that with the SS plates you will...

So be aware that with the SS plates you will likely lose some front camber as the strut protrudes up above the interface with the srut tower.
My car is kinda asymmetric, I was only able to get -3.2...
Forum: Tracking / Autocross / HPDE / Drifting 09-10-2024, 09:11 AM
Replies: 91
Views: 6,609
Posted By ZDan
If raising the car a bit significantly improved...

If raising the car a bit significantly improved front grip, I'm still *guessing* (even more so) it was more of a front bump travel issue!

Raising the front of the car raises front roll center,...
Forum: Tracking / Autocross / HPDE / Drifting 09-06-2024, 12:21 PM
Replies: 0
Views: 546
Posted By ZDan
How I found 2.5s at Watkins Glen

GREAT event at Watkins Glen with COMSCC last week! I was drivin my new-to-me '22 Mazda MX-5 RF (aka "Miata"). Was working my *arse* off but best times were in the 2:16.8x range, 3s off my best lap...
Forum: Tracking / Autocross / HPDE / Drifting 09-05-2024, 10:47 AM
Replies: 91
Views: 6,609
Posted By ZDan
Going from 15mm to 16mm rear bar (29% stiffer)...

Going from 15mm to 16mm rear bar (29% stiffer) isn't going to hurt anything and is just about the easiest/cheapest thing to do. Also not likely to help if the issue is really front bump travel and...
Forum: Tracking / Autocross / HPDE / Drifting 09-05-2024, 10:08 AM
Replies: 91
Views: 6,609
Posted By ZDan
If you've been bottoming out the front, IMO that...

If you've been bottoming out the front, IMO that is most of your understeer problem. I'm guessing the Tarmac 2s might have less front bump travel than RCE SS-2 I'm running. I'm at 330F/335R ride...
Forum: Tracking / Autocross / HPDE / Drifting 08-29-2024, 12:57 AM
Replies: 91
Views: 6,609
Posted By ZDan
FWIW the few times I've installed coilovers,...

FWIW the few times I've installed coilovers, measuring to ensure same left/right free lengths (i.e. same amount of thread showing) while setting ride height, I've wound up within 1% of 50/50...
Forum: Tracking / Autocross / HPDE / Drifting 08-21-2024, 05:29 AM
Replies: 91
Views: 6,609
Posted By ZDan
Akshually... Wheel rate (what matters) is...

Akshually...

Wheel rate (what matters) is spring rate x motion ratio *squared*, so with 9 kg/mm springs in back, wheel rate is 9 kg/mm * (0.75)^2 = 5 kg/mm

I don't get why so many suppliers...
Forum: GR86 General Topics (2nd Gen 2022+ Toyota 86) 08-20-2024, 10:40 PM
Replies: 3
Views: 2,460
Posted By ZDan
Definitely robot face, reminds me of that...

Definitely robot face, reminds me of that "clamps" robot on Futurama!
Forum: Tracking / Autocross / HPDE / Drifting 08-20-2024, 12:04 PM
Replies: 91
Views: 6,609
Posted By ZDan
Oh yeah, caveat: I'm not an autocross guy... ...

Oh yeah, caveat: I'm not an autocross guy...

"lots of toe in, in the rear," ewwwwww....
Lots of rear toe-in has *always* sucked for me on every car I've intentionally or inadvertently tried it...
Forum: Tracking / Autocross / HPDE / Drifting 08-20-2024, 12:58 AM
Replies: 91
Views: 6,609
Posted By ZDan
1st thing I'd do is swap the stock front sway bar...

1st thing I'd do is swap the stock front sway bar back in. Stiffer rear springs after that.

I'm running 7k front with 9k rear RCE SS-2 on my '23 BRZ with stock sways. It is admirably neutral,...
Forum: Suspension | Chassis | Brakes -- Sponsored by 949 Racing 07-12-2024, 06:25 PM
Replies: 22
Views: 8,129
Posted By ZDan
Won my time trial class with COMSCC last year on...

Won my time trial class with COMSCC last year on SS2. Sweeet... I did run 9k rear springs due to paranoia about understeer I had with the gen-1 BRZ, but honestly I think that was more to do with...
Forum: Other Vehicles & General Automotive Discussions 06-10-2024, 09:37 AM
Replies: 15
Views: 2,058
Posted By ZDan
I gotta sell either the BRZ or ND2, idea is to...

I gotta sell either the BRZ or ND2, idea is to try both on street and track and keep the one I like best! Fully expect the ND2 to be slower at the track, but I really miss driving a smaller...
Forum: Other Vehicles & General Automotive Discussions 06-10-2024, 09:21 AM
Replies: 15
Views: 2,058
Posted By ZDan
Car is gawgeous! Super lightweight compared to...

Car is gawgeous! Super lightweight compared to FT86. Seats are kinda CRAP tho! Gonna hafta get 3-point compatible racing seat (Cobra Nogaro?). Planning on coilovers anyway, but stock suspension...
Forum: Other Vehicles & General Automotive Discussions 06-08-2024, 12:40 AM
Replies: 15
Views: 2,058
Posted By ZDan
ND2 RF!

New used car...
Forum: Tracking / Autocross / HPDE / Drifting 06-06-2024, 03:18 PM
Replies: 2
Views: 820
Posted By ZDan
FWIW I set fastest race lap at Thompson CT...

FWIW I set fastest race lap at Thompson CT running this be-winged AP1 S2000 on 4x 255/35-18 A052s last weekend at 1:21.165. Last year in my mostly-stock '23 BRZ, with RCE SS-2 coilovers and...
Forum: Issues | Warranty | Recalls / TSB 05-22-2024, 05:20 AM
Replies: 28
Views: 5,212
Posted By ZDan
Yeah, factory wheel studs *and* nuts are...

Yeah, factory wheel studs *and* nuts are horrifically bad. They *will* bugger up and ruin your day. On the old car ('17) I had gone to ARP studs but stupidly kept using the factory nuts. Sure...
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