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Forum: BRZ Second-Gen (2022+) -- General Topics 03-08-2023, 09:04 AM
Replies: 48
Views: 3,779
Posted By Yoniyama
It's perfectly ok to want a different seat for...

It's perfectly ok to want a different seat for any reason. Hey, some people think US$4 is too much for a cup of coffee, but don't ask anyone at Starbuck.

Corbeau makes (relatively) inexpensive...
Forum: GR86 General Topics (2nd Gen 2022+ Toyota 86) 02-26-2023, 01:45 AM
Replies: 35
Views: 8,299
Posted By Yoniyama
A small (+/- 3lb) difference in wheel weight is...

A small (+/- 3lb) difference in wheel weight is very hard to discern. I installed on my 2018 RRZ, Volks Racing TE37 that weighs about 11.5lb each, and the difference is significant. Also, lighter...
Forum: BRZ First-Gen (2012+) -- General Topics 11-09-2022, 02:56 AM
Replies: 19
Views: 3,219
Posted By Yoniyama
Does anyone make a 'light-weight' alternator,...

Does anyone make a 'light-weight' alternator, rather than a high output one?
Forum: Scion FR-S / Toyota 86 GT86 General Forum 11-09-2022, 02:51 AM
Replies: 44
Views: 6,489
Posted By Yoniyama
Never mind if some people think the Toybaru...

Never mind if some people think the Toybaru should always be harsh and noisy.

In order to keep down cost, the Toybaru is a 90% completed car at factory gate. The factory makes it amenable to...
Forum: Scion FR-S / Toyota 86 GT86 General Forum 11-08-2022, 12:43 PM
Replies: 44
Views: 6,489
Posted By Yoniyama
I installed the following mod's on my Toybaru: ...

I installed the following mod's on my Toybaru:

(1) - super-light 16" (Volks Racing TE-37, 5.2kg each) wheels and Michelin Primacy 4 205/55-16 tyres;
(2) - two-piece front brake rotors (saveing...
Forum: GR86 General Topics (2nd Gen 2022+ Toyota 86) 09-10-2022, 08:18 AM
Replies: 27
Views: 7,920
Posted By Yoniyama
Reducing front unsprung weight by 16lb is...

Reducing front unsprung weight by 16lb is definitely worth the money and effort. I achieved similar weight saving by using a super-light wheel (Volks Racing TE-37 at 12.5lb each), 2-piece brake...
Forum: Wheels | Tires | Spacers | Hub -- Sponsored by The Tire Rack 09-03-2022, 07:40 AM
Replies: 15
Views: 2,455
Posted By Yoniyama
I use Muteki open lug nuts, they are cheap (less...

I use Muteki open lug nuts, they are cheap (less than US$50 per set), really light (about 35g each), and reliable.
Forum: Suspension | Chassis | Brakes -- Sponsored by 949 Racing 09-03-2022, 07:25 AM
Replies: 26
Views: 3,761
Posted By Yoniyama
How to deliver a high performance sports car at a...

How to deliver a high performance sports car at a low price? Toyota/Subaru opt to produce a 90% completed vehicle and let the owners put on the final touch to suit their individual taste. ...
Forum: GR86 General Topics (2nd Gen 2022+ Toyota 86) 08-14-2022, 12:53 AM
Replies: 14
Views: 6,754
Posted By Yoniyama
Regarding rims, I'm now looking at 16x7, either...

Regarding rims, I'm now looking at 16x7, either Volk CE28 ($480 per rim shipped) or TWS T66-F ($575 per rim shipped), both seem to be +48 offset.


My Volks TE-37 16X7 only weighs about 11.5lb...
Forum: GR86 General Topics (2nd Gen 2022+ Toyota 86) 08-14-2022, 12:36 AM
Replies: 22
Views: 6,864
Posted By Yoniyama
My Enkei RPF-1 bent when going over a pot hole...

My Enkei RPF-1 bent when going over a pot hole (at around 15mph).

Super-light cast wheel is more prone to bending, whereas super-light forged wheel is more prone to chipping and cracking.
Forum: Wheels | Tires | Spacers | Hub -- Sponsored by The Tire Rack 07-12-2022, 11:46 PM
Replies: 18
Views: 4,247
Posted By Yoniyama
Significant improvement from unsprung (and...

Significant improvement from unsprung (and rotational) mass reduction is not hype. I run 16" TE-37 that weighs about 12.5lb (5.7kg) each, saving about 9lb (4kg) per corner. The improvement in...
Forum: BRZ First-Gen (2012+) -- General Topics 01-22-2022, 03:03 PM
Replies: 20
Views: 3,965
Posted By Yoniyama
(1) Lighter wheels, if you can afford them, will...

(1) Lighter wheels, if you can afford them, will make a noticeable difference. I run 16-inch wheels that weigh only 11.5lb each, saving almost 10lb per corner, against OEM 17-inch wheels.

(2)...
Forum: Engine, Exhaust, Transmission 09-28-2021, 10:14 PM
Replies: 70
Views: 14,736
Posted By Yoniyama
I am a happy customer with a Versus carbon...

I am a happy customer with a Versus carbon driveshaft for automatic transmission. The only suspension modification is the brace for differential. Absolutely no vibration problem at any speed (up to...
Forum: GR86 General Topics (2nd Gen 2022+ Toyota 86) 09-28-2021, 09:58 PM
Replies: 55
Views: 11,487
Posted By Yoniyama
We should all be grateful that Subaru and Toyota...

We should all be grateful that Subaru and Toyota plan for easy modification of the Toybaru, for both versions 1 and 2. They build a 85% finished vehicle, in order to keep the selling price low, and...
Forum: Engine, Exhaust, Transmission 05-14-2021, 03:33 AM
Replies: 14
Views: 1,408
Posted By Yoniyama
Why is the FA20 rougher than the Mazda PE-VPS...

Why is the FA20 rougher than the Mazda PE-VPS (2-litre inline-4 engine in the MX_5)? In principle, the horizontal-4 layout of the FA-20 should be dynamically more balanced than the Mazda inline-4...
Forum: Wheels | Tires | Spacers | Hub -- Sponsored by The Tire Rack 01-10-2021, 01:08 PM
Replies: 13
Views: 3,977
Posted By Yoniyama
The lightest 16-inch wheel available is the TWS...

The lightest 16-inch wheel available is the TWS T-66F (forged), at about 4.8 kg. (Yes, you can save 10lb per wheel.)

But if you go up to 17-inch, wheel weight goes up significantly. The TWS...
Forum: Wheels | Tires | Spacers | Hub -- Sponsored by The Tire Rack 01-08-2021, 03:32 PM
Replies: 13
Views: 3,977
Posted By Yoniyama
Wheel weight matters, A LOT! That is true for...

Wheel weight matters, A LOT! That is true for driving on public road, too.

I run 16-inch Volks Racing TE-37 (forged) that weighs 5.1 to 5.3kg, averaging at about 5.2kg. The reduction in wheel...
Forum: Scion FR-S / Toyota 86 GT86 General Forum 10-19-2020, 10:20 PM
Replies: 34
Views: 11,959
Posted By Yoniyama
Looks it may deliver a real performance gain for...

Looks it may deliver a real performance gain for a modest cost. Having looked at all past discussion, the experience is mostly positive.

Only two further points to be high-lighted:

(1) Be...
Forum: GR86 General Topics (2nd Gen 2022+ Toyota 86) 01-14-2020, 06:24 AM
Replies: 367
Views: 76,446
Posted By Yoniyama
My thought: (1) Even if a prototype is shown...

My thought:

(1) Even if a prototype is shown in 2021, I doubt if it will be for sale before 2023.

(2) History has shown that rushing a new model out leads to many, many significant quality...
Forum: Wheels | Tires | Spacers | Hub -- Sponsored by The Tire Rack 12-04-2019, 08:57 AM
Replies: 37
Views: 7,066
Posted By Yoniyama
My personal, subjective experience is: when...

My personal, subjective experience is:

when you reduce unsprung weight by about 6lb (per corner), the perceived gain in performance (acceleration, ride quality, handling, etc) is slight but...
Forum: Suspension | Chassis | Brakes -- Sponsored by 949 Racing 11-24-2019, 09:09 AM
Replies: 81
Views: 32,333
Posted By Yoniyama
Lower (unsprung) weight, greater strength, what's...

Lower (unsprung) weight, greater strength, what's not to like (except for the price tag)?

I hate it when lower weight is quoted, without disclosing how much weight was lost. Surely the vendor...
Forum: BRZ First-Gen (2012+) -- General Topics 11-08-2019, 09:08 PM
Replies: 22
Views: 4,014
Posted By Yoniyama
These two cars complement each other. I have...

These two cars complement each other. I have both a 2016 base Cayman 2.7 and 2019 BRZ. The Cayman has all the power missing from the Toybaru, but the Toybaru is more agile.

I and my wife will...
Forum: GR86 General Topics (2nd Gen 2022+ Toyota 86) 11-01-2019, 02:03 PM
Replies: 626
Views: 141,821
Posted By Yoniyama
The FA20 seems rather unloved in this forum,...

The FA20 seems rather unloved in this forum, while it is imperfect, it does:

(1) provide a fully balanced configuration, unlike an in-line four. But why is it harsher than the Skyactiv-G? ...
Forum: Other Vehicles & General Automotive Discussions 10-24-2019, 05:23 AM
Replies: 213
Views: 32,843
Posted By Yoniyama
Thanks to the engineering skill of Toyota and...

Thanks to the engineering skill of Toyota and Subaru, our Toybaru has a great chassis that can handle much more power than the 200 hp produced by the FA20, hence there has been pleas from day 1 for...
Forum: Suspension | Chassis | Brakes -- Sponsored by 949 Racing 10-17-2019, 08:01 PM
Replies: 88
Views: 25,233
Posted By Yoniyama
Please see photo attached.

Please see photo attached.
Forum: Suspension | Chassis | Brakes -- Sponsored by 949 Racing 10-17-2019, 01:07 PM
Replies: 88
Views: 25,233
Posted By Yoniyama
See interview with Tada-san on the Supra: ...

See interview with Tada-san on the Supra:

https://www.youtube.com/watch?v=tmzNNckDm4s


The chassis (not suspension) can be too stiff, according to Tada-san.
Forum: GR86 General Topics (2nd Gen 2022+ Toyota 86) 10-16-2019, 03:22 AM
Replies: 626
Views: 141,821
Posted By Yoniyama
Toyota is able to achieve 40% combustion...

Toyota is able to achieve 40% combustion efficiency, using its Toyota New Dynamic Force technology (borrowing heavily from Mazda Sky-active technology). At the same time, it also improves torque and...
Forum: Suspension | Chassis | Brakes -- Sponsored by 949 Racing 10-14-2019, 12:07 AM
Replies: 88
Views: 25,233
Posted By Yoniyama
It is common for Toyota to add a fender brace to...

It is common for Toyota to add a fender brace to the A-post, many Lexus models (IS250, GS350, etc) have them OEM.

It is interesting that TRD only adds the fender brace and a stiffer v-brace in the...
Forum: Scion FR-S / Toyota 86 GT86 General Forum 10-03-2019, 09:25 PM
Replies: 22
Views: 2,430
Posted By Yoniyama
Beware of rattling. This is especially...

Beware of rattling.

This is especially problematic with Toybaru of 2016 and earlier vintage. Rattling is slightly less with the facelifted (2017+) version.

If not already installed, you may...
Forum: BRZ First-Gen (2012+) -- General Topics 10-01-2019, 10:50 PM
Replies: 177
Views: 25,367
Posted By Yoniyama
What attributes should Toyota and Subaru retain in the Second Generation FT-86 (aka

Dear Tada-san,

We are excited about the second generation FT-86. When you try to improve the FT-86, please retain the following attributes of the first generation FT-86:

(1) Pricing - the...
Showing results 1 to 30 of 119
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