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Hirochi Sunburst

Discussion in 'Official Content' started by Ai'Torror, Apr 2, 2025.

  1. Pythonwerks

    Pythonwerks
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    Jul 15, 2025
    Messages:
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    I think a facelift (from 2015-18) with a SIX speed manual would be cool
     
    • Agree Agree x 1
  2. Xupaun

    Xupaun
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    Aug 18, 2020
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    The problem is not the Tuning. It has less friction than any other DCT in game.

    Code:
    "sunburst2_transaxle_DCT": {
        "information":{
            "authors":"BeamNG",
            "name":"6-Speed Dual-Clutch Transaxle",
            "value":4000,
        },
        "slotType" : "sunburst2_transaxle",
        "slots2": [
            ["name",                    "allowTypes",                "denyTypes", "default",                    "description"],
            ["sunburst2_transfer_case",  ["sunburst2_transfer_case"],  [],          "sunburst2_transfer_case_FWD", "Transfer Case"],
            ["sunburst2_differential_F", ["sunburst2_differential_F"], [],          "sunburst2_differential_F",    "Front Differential"],
        ],
         "powertrain": [
            ["type", "name", "inputName", "inputIndex"],
            ["dctGearbox", "gearbox", "mainEngine", 1],
        ],
        "gearbox": {
            "uiName":"Gearbox",
            "gearRatios":[-3.35, 0, 3.65, 2.37, 1.75, 1.32, 0.98, 0.73],
            "friction": 0.87,
            "dynamicFriction": 0.00087,
            "torqueLossCoef": 0.0155,
            "parkLockTorque":2000,
            "additionalEngineInertia":0.05,
            "gearboxNode:":["tra1"],
    
            "gearWhineCoefsInput":  [0.60, 0.00, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13],
            "gearWhineCoefsOutput": [0.00, 0.00, 0.27, 0.27, 0.27, 0.27, 0.27, 0.27, 0.27, 0.27],
            "gearWhineInputEvent": "event:>Vehicle>Transmission>helical_01>twine_in_tuned",
            "gearWhineOutputEvent": "event:>Vehicle>Transmission>helical_01>twine_out_tuned",
        },
    
    Code:
    "vivace_transmission_7DCT": {
        "information":{
            "authors":"BeamNG",
            "name":"7-Speed Dual Clutch Transmission",
            "value":2050,
        },
        "slotType" : "vivace_transmission",
        "slots": [
            ["type", "default", "description"],
            ["vivace_transfer_case","vivace_transfer_case_FWD", "Transfer Case"],
            ["vivace_differential_F","vivace_differential_F", "Front Differential"],
        ],
        "powertrain": [
            ["type", "name", "inputName", "inputIndex"],
            ["dctGearbox", "gearbox", "mainEngine", 1, {"deformGroups":["gearbox"]}],
        ],
        "gearbox": {
            "uiName":"Gearbox",
            "gearRatios":[-2.78, 0, 3.563, 2.147, 1.427, 1.022, 0.788, 0.647, 0.54],
            "parkLockTorque":2000,
            "friction":1.34,
            "dynamicFriction":0.00134,
            "torqueLossCoef": 0.0155,
            "gearboxNode:":["tra1l"],
            "additionalEngineInertia":0.06,
    
            "gearWhineCoefsInput":  [0.60, 0.00, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13],
            "gearWhineCoefsOutput": [0.00, 0.00, 0.27, 0.27, 0.27, 0.27, 0.27, 0.27, 0.27, 0.27],
            "gearWhineInputEvent": "event:>Vehicle>Transmission>helical_01>twine_in_tuned",
            "gearWhineOutputEvent": "event:>Vehicle>Transmission>helical_01>twine_out_tuned",
    
            //"forwardInputPitchCoef":1
            //"forwardOutputPitchCoef":1
            //"reverseInputPitchCoef":0.7
            //"reverseOutputPitchCoef":0.7
    
            //"gearWhineInputPitchCoefSmoothing":50
            //"gearWhineOutputPitchCoefSmoothing":50
            //"gearWhineInputVolumeCoefSmoothing":10
            //"gearWhineOutputVolumeCoefSmoothing":10
    
            //"gearWhineFixedCoefOutput": 0.7
            //"gearWhineFixedCoefInput": 0.4
        },
    
    Code:
    "sbr_transaxle_7DCT": {
        "information":{
            "authors":"BeamNG",
            "name":"7-Speed Dual-Clutch Transaxle",
            "value":6300,
        },
        "slotType" : "sbr_transaxle",
        "slots": [
            ["type", "default", "description"],
            ["sbr_transfer_case","sbr_transfer_case_RWD", "Transfer Case"],
            ["sbr_differential_R","sbr_differential_R", "Rear Differential"],
        ],
        "powertrain": [
            ["type", "name", "inputName", "inputIndex"],
            ["dctGearbox", "gearbox", "mainEngine", 1],
        ],
        "gearbox": {
            "uiName":"Gearbox",
            "gearRatios":[-3.55, 0, 3.91, 2.29, 1.65, 1.30, 1.08, 0.88, 0.67],
            "friction": 1.24,
            "dynamicFriction": 0.0012,
            "torqueLossCoef": 0.0155,
            "parkLockTorque":2000,
            "additionalEngineInertia":0.05,
            "gearboxNode:":["tra1"],
    
            "gearWhineCoefsInput":  [0.60, 0.00, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13],
            "gearWhineCoefsOutput": [0.00, 0.00, 0.27, 0.27, 0.27, 0.27, 0.27, 0.27, 0.27, 0.27],
            "gearWhineInputEvent": "event:>Vehicle>Transmission>helical_01>twine_in_tuned",
            "gearWhineOutputEvent": "event:>Vehicle>Transmission>helical_01>twine_out_tuned",
        },
    
    The SBR's has the same friction levels the ETK's has, so I won't bring the ETK here. When I added the SBR's DCT to my Sunburst it improved drastically.

    Also, it behaves on a smooth manner, instead of the agresiveness you'd expect from the Sport S and RS. The ECU's could decrease the DCT clutch time for them and it would be a lot better
     
    #142 Xupaun, Nov 17, 2025
    Last edited: Nov 17, 2025
    • Agree Agree x 2
  3. Plasmapwrdhorse

    Plasmapwrdhorse
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    Jun 28, 2018
    Messages:
    219
    Sunburst 20B RS and 25B RS or "prodrive" I haven't decided yet.

    Sold globally these cars were the fastest, most expensive, and rarest models from the factory with only 1000 being built per year. coming as sedan and wagon in 2.0turbo 268hp or 2.5turbo 292hp versions with adjustable racing struts, carbon fiber hood and trunk lid, light weight glass and rally car body kit. The only option being 5-speed manual or DCT, these cars weighed between 90 and 150lbs less than the RS or RS AERO depending on which engine and transmission had been picked. These car are considered by enthusiasts and collectors to be very desirable and valuable so resale prices are high.
     

    Attached Files:

    • screenshot_2025-11-19_15-35-24.png
    • screenshot_2025-11-19_15-39-44.png
    #143 Plasmapwrdhorse, Nov 20, 2025
    Last edited: Nov 20, 2025
  4. brightontousignaut

    brightontousignaut
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    lwk good idea icl
     
  5. Plasmapwrdhorse

    Plasmapwrdhorse
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    Built on the nicknamed by hirochi employees "super sunburst" platform like the 20B and 25B these five models were built in very limited numbers and while they were technically completed in the hirochi sunburst main facility in Japan. Some were sent as complete cars to a famous racing engine builder in Britain to have their engines complety reworked while others just had their block and heads shipped to Britain and then shipped back when the work was finished. When completed all cars were rated in PS, their model names reflect that and their production was spread out over the production cycle of this iteration of the sunburst so each year only 20-50 of each model was built.

    348RS type B
    Built to be able to be sold in the USDM and globally the 2.5 L's core engine was reworked by hirochi's partner engine builder and the shipped back to be fitted with hirochi's turbo system and computer to meet regs while offering high performance. Only 500 were built.
    344hp, 5-speed manual, AWD, race struts, high performance brakes.
    screenshot_2025-11-22_16-08-26.png

    304RS type B
    Built to be able to be sold in the USDM and globally the 2.0 L's core engine was reworked by hirochi's partner engine builder and the shipped back to be fitted with hirochi's turbo system and computer to meet regs while offering high performance. Only 500 were built
    300hp, 5-speed manual, AWD, race struts, high performance brakes.
    screenshot_2025-11-22_16-09-04.png

    337RS 20B
    Built to be able to be sold globally the complete cars were shipped to Britain to have their 2.0l engines complety reworked by hirochi's partner engine builder and then they were delivered to their buyers but unfortunately they could no longer pass USDM emissions regs so none were sold there. Only 300 were built.
    333hp, DCT, AWD, race struts, performance brakes.
    screenshot_2025-11-22_16-10-08.png

    385RS 25B
    Built to be able to be sold globally the complete cars were shipped to Britain to have their 2.5l engines complety reworked by hirochi's partner engine builder and then they were delivered to their buyers but unfortunately they could no longer pass USDM emissions regs so none were sold there. Only 300 were built.
    380hp, DCT, AWD, race struts, performance brakes.
    screenshot_2025-11-22_16-12-40.png

    390CFR-R
    Built to be able to be sold globally the complete cars were shipped to Britain to have their 1.6L engines complety reworked by hirochi's partner engine builder. these these engines were so thoroughly reworked that they were street legal racing engines that were only legal because of the collaboration on coming up with a computer that could run them and keep them legal. then they were delivered to their buyers but unfortunately these engines had no hope of passing USDM emissions regs so none were sold there. Only 100 were built.
    385hp, 5-speed manual, AWD, race struts, performance brakes.
    screenshot_2025-11-22_16-13-54.png
     
    #145 Plasmapwrdhorse, Nov 23, 2025
    Last edited: Nov 23, 2025
  6. default0.0player

    default0.0player
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    Nov 30, 2018
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    2,097
    Where can I find the oil radiator? It's neither on front bumper support nor on radiator
     
  7. An0n

    An0n
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    Oct 5, 2025
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    by the spot with the oil radiator, hope this helps
     
  8. brightontousignaut

    brightontousignaut
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    its where the oil cooler is
     
  9. default0.0player

    default0.0player
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    2,097
    I can't find it by either browsing of searching for parts "cooler" or "radiator", could you post a screenshot?
    --- Post updated ---
    I also find a problem with the CVT, I don't know this bug is introduced in 0.37 or 0.38, but the CVT in this car no longer upshift in reverse.
    The DCT in the Sunburst has another problem. When decelerating very gently in D, sometimes hitting the gas while it shifts from 3rd to 2nd gear lags the throttle for half or a whole second, the throttle in "pedals and axis" seems to be stuck in 0 at this time, ignoring your throttle input. This leads to huge speed control issues driving like a traffic in city or town.
     
    • Agree Agree x 1
  10. fishuii

    fishuii
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    Nov 7, 2025
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    3

    yeah i agree, i decided to test what a bit more of an impact gives, and i went like 55 kph into the garage and it kind of sent the roof into the sky. in conclusion i agree very much so
     
  11. C4crazy11

    C4crazy11
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    Aug 15, 2025
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    142
    They need to add a BAJA edition, like subaru did.
     
  12. ManfredE3

    ManfredE3
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    Jan 9, 2016
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    2,540
    While the IRL Baja was based on a vehicle that was size class bigger than the Sunburst, the Outrider mod did pull it off well and I wouldn't be against seeing something like that officially
     
  13. C4crazy11

    C4crazy11
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    Aug 15, 2025
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    the IRL Baja was based on the outback which is just the wagon version of the sunburst
     
    • Like Like x 1
  14. DriftinCovet1987

    DriftinCovet1987
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    The Outback is based on the Legacy, which is a mid-size sedan (while the Impreza (which the Sunburst is closer to) is a compact sedan)). I still think that a Sunburst ute could work, since there were even smaller Japanese utes in the 2000s (like the Toyota bB Open Deck). There also was the Proton Arena/Jumbuck, which was based on the Wira (which is about the same size as the Sunburst). However, most cars don't tend to have more than two body styles, so I'm not sure if a Sunburst ute will ever happen officially.
     
    • Agree Agree x 1
  15. amuguuuuu

    amuguuuuu
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    Dec 26, 2023
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    300
    Well, the devs could even release a major update on remastered cars like the Marshall, which got a limousine variant, and the D Series, which got several Crawler configurations, so let's say there's a possibility of the Sunburst getting a UTE variant.
     
  16. Lichi

    Lichi
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    i imagine they would add new content to cars that hadnt been remastered in a bit, like the limo or the d series got, since the sunburst got remastered like 3 updates ago i imagine they wouldnt add more stuff to it so soon
     
  17. C4crazy11

    C4crazy11
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    maybe, but still it would be nice to have an UTE version
     
  18. r_fostoria

    r_fostoria
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    Mar 19, 2016
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    I just want the DCT to be reprogrammed and roof rails for the wagon model.
     
    • Agree Agree x 1
  19. C4crazy11

    C4crazy11
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    that is offered in the Trailcross mod. Great Mod BTW.
     
  20. DriftinCovet1987

    DriftinCovet1987
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    That is fair enough, but:

    -The Grand Marshal didn't have an alternate body style before 0.37
    -The D-Series Crawler re-used several parts from the Hopper Crawler for a vehicle that was already getting updated and had a bunch of frames and was the "main" vehicle of BeamNG.drive

    Neither of those are true for the Sunburst, which already has an alternate body style and (while being an important vehicle for Beam) isn't the main vehicle. There wouldn't be anything to re-use from other vehicles for a Sunburst ute, either - maybe some modeling techniques from the Miramar, but that's about it. I'm not saying that it won't ever happen, but I don't see it as very likely, considering that most unibody passenger cars have only one or two frames/bodies.

    If one of the current modern vehicles were to get a ute variant, I think the most likely one would be the Bastion. It doesn't have an alternate body style yet, and it would work as a nice "stand-in" for the final-gen Holden Commodore/Caprice and Ford Falcon (without having to make a whole new car). (I'm aware that the Bastion is meant to be an LX/LD Dodge Charger analogue, but those Chargers were sold in Australia, and it's not too much larger than the Commo/Falc (it's actually shorter than the Caprice)).
     
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