1980s & 1990s Gr.A RS500, E30, 190E, 240, Supra, R31, R32, DTM, BTCC, ATCC

[05XR8]

For anyone looking to replicate Sierras from BTCC, ATCC, DTM. If you find any other specs, please post.

Specs – DTM Ford Sierra RS500 Cosworth

FORD SIERRA RS500 COSWORTH, DTM race car build for season 1988

• Top speed 300 km/h (186 mph)
• Acceleration 0-100 km/h: 4.8 s
• Length 4460 mm, width 1745 mm, height 1450 mm
• Wheelbase 2605 mm
• Track width 1750 mm (both front and rear)
• Weight
• 120 ltr safety fuel cell (from 1988) with fast refuel connectors
• Roll gage Matter 25CrMo4

ENGINE

• Ford Cosworth
• 4 cylinders, water cooled
• 1993 cm3, bore 90.82 mm, stroke 76.95 mm
• two over head cams, four valves per cylinder
• Compression ratio 7.5:1
• Max power: 480 hp at 6500 RPM (353 kW)
• Max torque: 450 Nm at 5300 RPM
• Engine is original Eggenberger engine
• Engine management system (ECU) is original Bosch Motronic MP 1.7
  • Some additional information about Bosch Motronic system, for example list of race cars where it has been used
    • Bosch Motorsport Classic Services (pdf-document)
    • Bosch Motorsport Classic Dienstleistungen (pdf-document, in German language)

GEARBOX AND FINAL DRIVE

• Getrac 265/3,53,
• With sand casted shell, mechanical oil pump and oil cooling system
• Final drive 7,5″ with ZF limited-slip-differential (plate type), electrical oil pump and oil cooling system
• Tube type drive shafts by Eggenberger

SUSPENSION

• original magnesium suspension components

BRAKES

• homologated AP Racing brakes
• 4 piston calipers
• 330 mm front disks, ventilated
• 285 mm rear disks, ventilated

WHEELS

• 10″ x 17″ center nut BBS magnesium race rims
• 235/630R17 Dunlop race tyres

Bathurst Ford Sierras: Dick Johnson & John Bowe

Motor Racing royalty comes together one last time to wheelspin down memory lane...

www.tradeuniquecars.com.au

Engine: 1993cc 4cyl, DOHC, 16v, turbocharger

Power: 485kW(650 hp) @ 7500rpm

Torque: 678Nm @ 6000rpm

Weight: 1100kg

Gearbox: Getrag 5-speed manual

Top Speed: 300km/h


Specifications from PROJECT CARS 2
Top Speed: 187 mph
Power: 390 HP
Weight: 2292 Lbs

1987 Cars

1987

Engine
Bore and stroke	90,82 x 76,95
Size	1993 cc
Cams	2 OHC
Valves per cilinder	4
Power	370 HP
Details	1 Garrett turbo
Transmission	Getrag 5-speed

e	Ford Cosworth 4 in line	​
Bore and stroke	90,82 x 76,95
Size	1993 cc
Cams	2 OHC
Valves per cilinder	4
Power	370 HP
Details	1 Garrett turbo
Transmission	Getrag 5-speed
Weight	1035
Brakes f/r	disc / disc
Wheels f/r	8,75 x 16 / 8,75 x 17
Tires

ngine	Ford Cosworth 4 in line	​
Bore and stroke	90,82 x 76,95
Size	1993 cc
Cams	2 OHC
Valves per cilinder	4
Power	470 HP/6800
Details	1 Garrett turbo
Transmission	Getrag 5-speed
Weight	1040
Brakes f/r	disc / disc
Wheels f/r	8,75 x 16 / 10 x 17
Tires	Pirelli

1988

Engine	Ford Cosworth 4 in line
Bore and stroke	90,82 x 76,95
Size	1993 cc
Cams	2 OHC
Valves per cilinder	4
Power	520 HP/
Details	1 Garrett turbo
Transmission	Getrag 5-speed
Weight	1100
Brakes f/r	disc / disc
Wheels f/r
Tires	Pirelli

This ex-BTCC Ford Sierra Cosworth is the ultimate retro racer

Silverstone Auctions has this 540bhp fire-breather coming up for sale

www.topgear.com

ATCC R32 GT-R

570-680hp
1325kg-1500kg

Nissan R32 GT-R Review

From Bathurst to Thailand to Fiji, the legendary R32 GT-R has seen it all

www.tradeuniquecars.com.au

How’s this for an example? "They tried to slow us down with the pop-off valve when we went back from 680 horsepower to about 570," explains Heaphy. "But we just sat down and said ‘well, this is the boost we have to work with’. So they (the team) individually tuned each cylinder to the point we were back to around 640 horsepower!"

Nissan R32 Skyline GT-R: When Godzilla Ruled The World - Shannons Club

They called it ‘Godzilla’ with good reason. Nissan’s R32 Skyline GT-R was indeed the monster from Japan which destroyed everything in its path...

www.shannons.com.au

Given the much greater technical complexity of the R32-based GT-R, GMS again blazed its own development path. With a hefty minimum weight of 1325kg… Having already increased the GT-R’s minimum weight by 35kg for 1991 (from 1325kg to 1360kg)… For the start of the season(1992) the GT-Rs copped an extra 40kg of ballast (now 1400kg minimum weight)…so from round five CAMS increased the Nissan’s minimum weight again - this time by a whopping 100kg

190E DTM specs


Take note, the DTM car did have an option for a six-speed gearbox.

1991 Cars

Lastest addition the HR31 GTS-R

Nissan Skyline HR31 GTS-R: The unsung hero of Nissan's first ATCC victory - Shannons Club

Despite a disastrous Bathurst debut in 1988, when both of the works Nissan entries were out by lap 18, the HR31 GTS-R went on to become a formidable competitor ...

club.shannons.com.au

Basic ATCC specs of 400bhp/1160kg(1988 regulations)* and 1180kg-1185kg(1990 regulations)- specs also found above in touringcarracing.net link “1987 Cars”
*ATCC Homologation regulations called for minimum weight of 1100kg

ETCC specs

Nissan | Heritage Collection | Skyline GTS-R

400PS/1160kg

MA70 Supra

Toyota Supra: Showroom Racing Great. Group A Heavy Weight. - Shannons Club

2.0 litre Celica racing star and Toyota dealer Peter Williamson upgraded to the larger six cylinder-powered Supra coupe in 1984. This is how his Celica Supra MA...

club.shannons.com.au

Bathurst specs:
580BHP(qualifying)/1400kg

Volvo 240

Group A Volvo 240T - Past Blast

John Bowe's racing career owes more to the Volvo than you might think

www.tradeuniquecars.com.au

Group A Volvo 240T Specs​

Engine 2141cc SOHC in-line four, turbocharged
Power 250kW @ 6600rpm
Torque 400Nm @ 6000rpm
Gearbox Getrag M51 close-ratio 5-speed
Brakes Ventilated discs 330mm (f), 280mm (r), 4-piston calipers
Suspension MacPherson struts, coil springs, adjustable dampers (f), live axle, Panhard rod, coil-over dampers (r)
Weight 1100kg

 

[Romafo72]

My Dad had a five-speed '84 Mercury Merkur XR4Ti with a whopping 175hp. All red with the dual spoiler. It was so much fun to drive. Thought it was pretty fast and when I was 18 challenged my buddy with an 83 Mustang 5.0. That guy gave me five car lengths and was by me before I got out of second gear. I was a little 😳.

Still loved that car.

 

[05XR8]

The closest I got to one of those was at the NY Auto Show and a drug dealer in my neighbourhood, had a then new black one. Other than that, being a passenger in a Scorpio, as my brother test drove it.

Back to the RS500. Checking JTCC specs. Seen a couple on YouTube. I’ll update the post.

 

[TheCracker]

The closest I got to one of those was at the NY Auto Show and a drug dealer in my neighbourhood, had a then new black one. Other than that, being a passenger in a Scorpio, as my brother test drove it.

Back to the RS500. Checking JTCC specs. Seen a couple on YouTube. I’ll update the post.

The car that won the 1988 JTCC was an Eggenburger car, so the specs will no doubt be the same. 👍

 

[macmark]

My dad had an original 3 door Cosworth when they first came out. He had some issues with it that Ford couldn't fix so they told him to take it to a company called Mountune to get them to check the ECU. Mountune used to build the engines for some of the race and rally Cosworths. He ended up spending more than what the car cost him having it tuned and it left there with over 340bhp, a full roll cage and fire extinguisher system. I loved that car and got to drive it a few times (without him knowing) before it was stolen from outside where he worked and later found wrapped around a tree in a school field next to a very sharp bend. Unfortunately the roll cage probably saved the car thief's life. I've not played GT7 for a few months but I'll be logging in as soon as this update is released as I've wanted this car in the game since GT 1.

 

[MrHorsepower]

The RS500 is quite a special car. I saw one many years ago, like 20, in a rally. The car was a former circuit racer and the owner was adapting it for rallying and hillclimbing. When I saw it was converted into LHD.
I also read an article about Hahne's Wurth Sierra RS500, a former DTM car, now restored, but at a certain point it was running a 750 bhp engine for hillclimbing!

 

[05XR8]

As for customisation and tuning, roll cages A-C can be fitted, side moulding delete, rear GT diffuser, Wingless, rear lip spoiler, Single whale tail.

Max weight reduction: 989 kg
Max Power: 422 BHP👎

 

[TheCracker]

422bhp is the max you can tune it too? Where do PD magic these numbers from?

 

[05XR8]

Exactly.

 

[floydant]

As for customisation and tuning, roll cages A-C can be fitted, side moulding delete, rear GT diffuser, Wingless, rear lip spoiler, Single whale tail.

Max weight reduction: 989 kg
Max Power: 422 BHP👎

What kind of PP is it fully tuned? Approximately

 

[johnson_57]

What kind of PP is it fully tuned? Approximately

This is all engine and weight reduction upgrades installed. I Don't have racing brakes fitted nor the rear diffuser. Using racing tyres will also raise the pp more.

 

[Wyrm]

Anyone have a 600PP Tokyo Tune tested yet? Edit:thank you

 

[Romafo72]

I bought two. One for the 700PP LeMans and one road car.

 

[05XR8]

What kind of PP is it fully tuned? Approximately

I'll have to check when I boot it up. My cars are fitted with racing brakes/pads and RH, I believe they sit between 630-650, without any aero added. Handling is similar to the both E30s.

 

[05XR8]

Here’s the max PP without aero. The difference between the PP are Anti-Lag On-Strong and Anti-Lag Off. I’ve set weight to the real world specs. At minimum weight, it rises to 660.54.

 

[CodeRedR51]

422bhp is the max you can tune it too? Where do PD magic these numbers from?

This may or may not be a bad thing. It depends on what you are going for in terms of replicating the real car. Do accurate specs matter? Or do lap times matter? I've been playing around a lot lately with replicating GT4 cars, and I am finding that in order to match the lap times that the real life cars put down, you have to significantly reduce the power output of the cars in-game. By as much as 100hp.

 

[god84]

This may or may not be a bad thing. It depends on what you are going for in terms of replicating the real car. Do accurate specs matter? Or do lap times matter? I've been playing around a lot lately with replicating GT4 cars, and I am finding that in order to match the lap times that the real life cars put down, you have to significantly reduce the power output of the cars in-game. By as much as 100hp.

Wow, 100hp now that's interesting. That's a huge drop.

 

[CodeRedR51]

Wow, 100hp now that's interesting. That's a huge drop.

Yeah. The P1 qualifying time at Road Atlanta for the Michelin Pilot Cup race in September was a 1:26.348. To match this time in-game the GT4 cars need to be in the 350-360hp range. (around 620pp) For the Camaro that is a 130hp reduction...

 

[05XR8]

Baseline set ups. Anti-lag, Off/On Weak or Strong to adjust PP as needed. Differentials are optional. Especially if having the AI use these cars, as AI use all driving aids.

Widebody, 17” wheels-wide offset

Front & rear aero, 18” wheels Wide offset only

Normal E30 No aero

17” wheels wide wheels & offset

 

[TheCracker]

This may or may not be a bad thing. It depends on what you are going for in terms of replicating the real car. Do accurate specs matter? Or do lap times matter? I've been playing around a lot lately with replicating GT4 cars, and I am finding that in order to match the lap times that the real life cars put down, you have to significantly reduce the power output of the cars in-game. By as much as 100hp.

Due to the fact that in GT7 you can lower the weight to less than it was homologated to run at in period, you can get closer to the IRL power to weight ratio for the '87 RS500, which goes some way to evening things out.

Got to find some lap time data and see if there are any tracks in GT7 that they ran on in period... Has the Bathurst layout changed since 87/88? I know Brands Hatch has.

 

[05XR8]

Due to the fact that in GT7 you can lower the weight to less than it was homologated to run at in period, you can get closer to the IRL power to weight ratio for the '87 RS500, which goes some way to evening things out.

Got to find some lap time data and see if there are any tracks in GT7 that they ran on in period... Has the Bathurst layout changed since 87/88? I know Brands Hatch has.

Well, The Chase was added in 1987. Bathurst was resurfaced around 2014. Being PD scanned the track around 2012. Can’t recall any surface changes between ‘87 through 2012. You can see in the video below, since that time, tyre bundles been added around the circuit.
Pole lap in 1987 - 2:16.969


Main peoblem is the Finish line. PD still haven’t moved it back. You’ll have to time the lap completion just after the underpass.

 

[OldandSlow]

05XR8,

You're doing an outstanding job with the Australian cars and series'. Thanks for sharing that.

 

[kraftwerkd]

Baseline set ups. Anti-lag, Off/On Weak or Strong to adjust PP as needed. Differentials are optional. Especially if having the AI use these cars, as AI use all driving aids.

Awesome work 05XR8. My knowledge of early 90's xTCC cars is limited - were they bored and stroked beyond factory spec or is that just to bring the power numbers closer in line to their real-world counterparts?

In any case I just started on a grid using your setups, but have opted not to do bore/stroke upgrades, as what I can find about them they still use the factory displacement.

Cheers!

 

[05XR8]

Awesome work 05XR8. My knowledge of early 90's xTCC cars is limited - were they bored and stroked beyond factory spec or is that just to bring the power numbers closer in line to their real-world counterparts?

In any case I just started on a grid using your setups, but have opted not to do bore/stroke upgrades, as what I can find about them they still use the factory displacement.

Cheers!

Correct, in regards to upping engine displacement. I’ve got cars with no bore or stroke up as well. The E30 sits perfectly at 300 BHP. Meanwhile, the E30 SE gives 336 BHP sans bore & stroke up.
It’s unfortunate we don’t get much more power to tune the cars properly. As shown in the op, the GT7 cars are way below the Eggenberger and DJR power figures. We’re also limited in how much weight can be shaved. Some specs for the E30 are at 940kg. In game we can only lower to 983kg.

 

[05XR8]

Just added the R32. Was looking to build the Gr.A JTC cars, but sidetracked with my livery to build the Australian Touring Car Championship Fred Gibson cars. Updated the OP with specs and links.

 

[05XR8]

Max power for the RS500 only jumps to 442BHP. No engine swap.

 

[A_Higher_Place]

Currently trying to match the Alfa 155, engine swapped M3, and the Sierra for a DTM league. I am leaving the Alfa as is and trying to get the other two up to par. The AI driving is pretty atrocious with tuned-up road cars. Getting them to match AI lap times in a Gr formatted car just means more power, unfortunately.


My Sierra is a 676pp, M3 at 690pp, and Alfa at 655pp.

 

[05XR8]

Yeah, it's one, on a list, in regards to matching road cars to race cars, in Custom Race.

 

[05XR8]

Updated OP and added the 190E to the title.

 

[05XR8]

Only bad thing about tuning the 190 E is, no weight reduction under 1000kg. It's about 50-60kg over DTM specs. Just makes '91 model DTM specs(340BHP) at 346BHP(all parts excluding Bore & Stroke upgrades).