DC5 Type R – Chapter 10
The rear spare tire well was redesigned into a functional storage compartment.
After converting the car to a two-seat layout, the rear section became directly visible from the cabin.
Because of that, I wanted the trunk area to feel visually clean and continuous — not simply stripped out.
To achieve this, the spare tire well was reshaped with custom steel panels.
The opening was redesigned into a square layout, and the surrounding structure was bent and reinforced to maintain strength.
Both the steel frame and the aluminum lid were bead-rolled to increase rigidity while keeping the surface simple and smooth.
The surrounding steel panel was recessed so the aluminum lid would sit perfectly flush with the floor once installed, creating a cleaner and more integrated finish.
I also imported locking fasteners from the UK that can be secured with a flathead screwdriver, allowing the compartment to remain functional while maintaining a clean appearance.
The objective was not only to create storage space, but to integrate it naturally into the chassis layout so the rear section would feel intentional and cohesive as part of the overall car.
#DC5 #DC5TypeR #IntegraTypeR #Honda #AcuraRSX #K20A #HondaLife #JDM #JDMCulture #JapaneseCarCulture #TrackCar #StreetCar #Chassis #ChassisStiffness #RollCage #Fabrication #MetalShaping #BeadRolling #CustomFabrication #Handmade #BuiltNotBought #FunctionAndForm #OperaPerformance
DC5 Type R – Chapter 9
**Interior Integration and Custom FRP Side Covers**
The addition of the side bars required modifications to the rear side interior panels.
Rather than simply cutting the factory trim and leaving the exposed areas unfinished, custom FRP covers were fabricated to integrate the roll cage structure into the interior as naturally as possible.
Photo 1 shows the completed FRP side cover installed.
The textured finish was intentionally applied to visually match the surface texture of the factory interior panels as closely as possible.
Photo 2 shows the masking process used to protect the original interior panels before beginning FRP fabrication.
Photo 3 shows the FRP panel after molding and release, temporarily fitted before final finishing and paint.
Even in areas that are rarely noticed, the intention was to make the additional structure appear as though it belonged to the chassis and interior from the beginning.
The focus was not only functional integration, but also maintaining a cohesive and factory-like appearance throughout the cabin.
#DC5 #IntegraTypeR #Honda #AcuraRSX #FRP #CustomFabrication #InteriorFabrication #RollCage #ChassisEngineering #HondaTuning #OperaPerformance
As the restoration progresses,
components are cleaned before reassembly.
Fuel lines, brake lines, rear diffuser,
and even the inner side of the side step covers —
areas that are rarely accessible once assembled.
Part of restoring the car beyond what is visible.
#DC5TypeR #AcuraRSX #Honda
#Restoration #Reassembly
DC5 Type R – Chapter 8
**Integrating the Roll Cage Into the Chassis Structure**
This stage focused on transforming the roll cage from a standalone safety structure into an integrated part of the chassis itself.
Photo 1 shows the template for the rear R-shaped gusset connecting the main hoop to the upper section of the rear floor crossmember, along with the corner gusset tying the side sill and rear crossmember together.
Photo 2 shows the completed R-shaped gusset between the main hoop and crossmember, together with the side bar extending forward from the main hoop into the front section of the side sill.
Photo 3 shows the forward mounting point of the side bar, integrated into the lower A-pillar and side sill area.
After welding the side bar to the sill, additional plates were added to create a boxed structure for improved load distribution and local rigidity.
Photo 4 shows the center section of the side bar connected to the side sill through an R-shaped boxed support structure.
Photo 5 shows the same R-shaped boxed support viewed from inside the cabin.
The roll cage was designed not only as a safety structure for rollover protection, but as an integrated part of the chassis itself.
By tying the cage into key structural points throughout the body, the goal was to improve overall chassis rigidity and create a smoother and more continuous load path through the entire shell.
This approach was less about simply adding reinforcement, and more about making the chassis and cage function as one unified structure.
Every reinforcement was shaped to work with the existing body structure, with the intention of allowing forces to flow more naturally through the shell rather than concentrating stress into isolated areas.
Although this car features extensive chassis reinforcement and roll cage integration, it was not built specifically for racing or time attack competition.
The objective was to create a chassis that would allow the owner to fully enjoy spirited sports driving with greater precision, consistency, and communication from the car itself.
#DC5 #IntegraTypeR #Honda #AcuraRSX #ChassisEngineering #RollCage #Fabrication #SportsDriving #operaperformance
Yesterday I finished fabricating a titanium footrest for the Honda S2000.
The titanium accelerator, brake, and clutch pedal set, along with the reservoir tank cover and Opera stickers, have now been shipped to Texas.
I also recently received an order for two more titanium pedal sets from a friend in Georgia, USA, which I will begin fabricating soon.
Thank you always for the continued support. I truly appreciate it.
#OperaPerformance #TitaniumPedals #HondaS2000 #JDM #Handmade #fabrication #madeinjapan
The Gathers Civic of @operaperformance on GT7.
The story of Yasukichi Yamamoto's cars continues with a legendary car, the 1998 Gathers Civic, which appeared for the first time in Gran Turismo 4, but let's let the direct protagonist tell its story:
Before becoming the driver of the Gathers Drider Civic, I was working as a mechanic in the 1997 season for the Ultraman Civic EK4 run by Drider Kikaku. At the time, I was working at a racing garage called K-Steer, where the Drider project came to us. The driver of the Ultraman Civic was Satoshi Tsujimoto, a former motorcycle road racer who had raced professionally for both Suzuki and Honda as a Yoshimura rider.
The name “Drider” itself came from combining the words “Driver” and “Rider.” Tsujimoto-san was practicing touring car driving seriously, and we often went together to kart circuits to train using 125cc shifter karts.
During the 1997 season, I visited Tsujimoto-san at his home and told him something very direct: “If I build the car myself and drive it myself, I'm confident we can win races.”
From here Yamamoto begins the legendary story of the overall victory of the Civic and of the first meeting with our Kaz:
I don't know whether those words stayed in his mind, or whether he truly believed in me, but for the 1998 season he recommended me — a mechanic at the time — to become one of the drivers of the Gathers Drider Civic alongside him.
Together, we won the 1998 Super Taikyu Class 3 championship. I will always be deeply grateful to Tsujimoto-san for believing in me and giving me that opportunity.
That same year, at the Tokachi 24 Hours race, the Gathers Drider Civic stopped the 50-race winning streak of the R33 Skyline GT-R and achieved overall N1 victory in Super Taikyu.
Then, after winning back-to-back championships with the Gathers Civic in 1998 and 1999, I met Kazunori Yamauchi shortly after the release of Gran Turismo 2 during the 1999 off-season.
Looking back now, I feel that everything was connected — from my early days in karting, to the RAZO Civic, and to Tsujimoto-san believing in me and giving me the chance to drive the Gathers Civic.
Pics by @gtauto.ph
#civic #gt4 #playstation #honda #rac
Three sets of handmade titanium pedals and two gas pedals are now finished.
These were the pedal sets that were still in production until yesterday.
Today’s work included drilling the mounting holes, double-action surface finishing, dimple die processing, and adding the Opera marks.
About 6.5 hours of hand fabrication work went into today’s process alone.
One set will be shipped tomorrow to Built by Legends for their EG6 Civic project.
After finishing the S2000 footrest, the Texas order will also be ready for shipment.
#OperaPerformance #TitaniumPedals #Handmade #HondaS2000 #EG6 JDM Fabrication MadeInJapan
Good evening.
Today’s work was shaping the edges of the titanium pedal plates that were cut and drilled yesterday.
After bending the edges, I adjusted the thickness evenly and removed the burrs so the finished parts would be safe to handle.
This process alone took around 6 hours by hand.
#OperaPerformance #TitaniumPedals #Handmade #Fabrication #HondaS2000 #eg6 #madeinjapan #jdm #nsx
Today I started production on the backordered handmade titanium pedal sets.
I’m building three sets:
* one for an EG6 Civic by @builtbylegends
* one S2000 pedal set + footrest ordered from Texas
* and one set for stock
Today’s work included cutting each plate from titanium sheet, rolling the correct OEM-style curvature with a slip roller, and drilling the pilot holes for the dimple die holes.
I’ve also been filming the process as a timelapse video.
This is still just the early stage of the fabrication process.
#OperaPerformance
#TitaniumPedals
#Handmade
#HondaS2000
#eg6
#jdm
＃fabrication
＃madeinjapan
The RÄZO Trampio Civic EG6 of @operaperformance on GT7
From today we begin a series of posts dedicated to the cars of Yasukichi Yamamoto, creator of Opera Performance, starting from the Civic EG RÄZO, these are his words:
"In 1992, I drove car number 72 with Tomohiko Tsutsumi and we came in second in the N1 Endurance Series, Class 3.
The series winner was car number 71, the RAZO Civic. Tomohiko Tsutsumi was the manager of Object T, a racing team for Toyo Tires. Object T was also a team that ran Group A AXIA Skyline and BP Skyline cars. Then I was mechanic these skyline and I painted base colors also RAZO Civic too.
I am very grateful to Mr. Tsutsumi and we still keep in touch. It is thanks to Mr. Tsutsumi that I was able to drive a car for a professional racing team.
In the 1992 N1 Endurance Series race at Tokachi, I achieved my first victory in an N1 race. It was great memories."
(continue in the first comment)
Pics by @gtauto.ph
#gt #honda #civic #tuner #playstation
Built in 2004,
based on what I had learned and believed at the time.
This is not about where load begins,
but how it is received and carried through the structure.
Input travels from the tire,
through the tire sidewall, suspension bushings, strut towers, side members, A-pillars, bulkhead, floor, and roof,
before being distributed toward the rear.
Any flex along this path introduces delay and unwanted geometry change,
disconnecting the driver from the tire.
The goal is to minimize that loss.
To transmit input clearly to the driver,
and return feedback without distortion.
The aim is to make the car an extension of the driver,
while recognizing how difficult that truly is —
and building it as close to that ideal as possible.
This is the same 350ZRS as seen in Gran Turismo 4.
Quiet on the outside.
Built from within.
#350ZRS
#OperaPerformance
#GranTurismo4
#Nissan350Z
#Z33
#Chassis
#ChassisDevelopment
#MotorsportEngineering
#StructuralDesign
#Fabrication
#CustomFabrication
#RaceCarEngineering
#BuiltNotBought
#FunctionOverForm
#Understated
DC5 Type R – Chapter 7
B-pillar Integrated Main Hoop
More than a roll bar.
Part of the chassis.
The main hoop is integrated into the B-pillar,
but integration requires more than welding a tube.
The inner structure is opened,
reinforced with gussets,
then restored — tying everything together as one.
By routing the hoop through the B-pillar,
the factory trim can be retained.
The restored panel is not just cosmetic —
it becomes part of the structure,
acting as an additional load path between the hoop and the pillar.
No extra reinforcement plates are needed.
Less parts. Less weight. More integration.
Normally, strength is increased by adding parts.
Here, it comes from making better use of what already exists.
Load is not received at a point.
It is distributed through structure.
This chassis was built in 2007.
#dc5 #dc5typer #acurarsx #hondaintegra #integraTypeR
#rollcage #rollbar #chassis #chassisfabrication #motorsportengineering
#racecarengineering #fabrication #metalwork #tigwelding #customfabrication
#lightweight #rigidity #motorsport #timeattack #trackcar
#honda #jdm #jdmculture #jdmlegend #functionoverform
