Mitsubishi Fuso Rosa

The Mitsubishi Fuso Rosa (, or simply Mitsubishi Rosa) is a Japanese minibus based on the Mitsubishi Fuso Canter manufactured by Mitsubishi Fuso Truck and Bus Corporation. The Mitsubishi Fuso Rosa was launched in 1960 and is now in its fifth generation, known as the BE7. In Japan, Asia-Pacific, Mid-East, Africa, Jamaica and South America, its principal competitors are the Isuzu Journey, Nissan Civilian, Mazda Parkway and Toyota Coaster.

History The Mitsubishi Rosa was launched in 1960 by the Mitsubishi Heavy Industries (formerly China-Japan Heavy Industries) and was called Mitsubishi Rosa. In 1964, three companies merged with the Mitsubishi Heavy Industries to become a new Mitsubishi Heavy Industries, and the Mitsubishi Rosa became a Mitsubishi Fuso product to replace the Fuso MB720 minibus in 1966.

First generation (1960–1973)

Mitsubishi officially launched the Rosa minibus in 1960. At that time, the factory was coded as B10 and developed from the chassis of the original Mitsubishi Jupiter T10 truck.Mitsubishi Light Bus Genealogy Its body style is similar to the Mercedes-Benz O 319 minibus, with a length of approximately 5.4 meters.

In the following year (1961), Mitsubishi evolved to B20 on the basis of B10, which is an extended version of B10, which ranges from 6.25 to 7 meters in length.

Second generation (1973–1986) In 1973 Mitsubishi released the second generation, which is similar as the first generation, the main difference is the design of the front has been largely revised, and a large number of components can be shared with the Mitsubishi trucks. In the beginning, there was BC2 (short-range gasoline version), BE2 (short-range diesel version) and BH2 (long-range diesel version). In 1981, the BK2 series was introduced (long-range version with a width of 2.3 meters).

Third generation (1986–1997)

The third generation Rosa (chassis code BE4 series) was introduced in as a full model change over the BE3 "Pretty Rosa". The BE4 adopted a more modern cab-forward profile with a panoramic windshield, a lower beltline, and factory-standard rectangular twin headlamps on upper trims; following a minor change in , the rectangular two-lamp arrangement was standardized across all models.Japanese Wikipedia (三菱ふそう・ローザ): 1990 MC details incl. headlamps/AT/4WD/IFS Offered in short () and long () bodies, seating ranged from 26 to 29 depending on interior specification.Mitsubishi Club CZ: Rosa III (BE4) summary incl. dimensions

Year-to-year changes 1986: BE4 launch (codes P-BE4xx). Short/long bodies; FR layout; 5-speed manual standard.Carused.jp: model overview & BE4 launch summary 1987: Introduction of the Royal tourist trim (Sept), featuring reclining headrest seats, curtains, full-length overhead racks with integrated lighting/ducts, ducted roof A/C, ceiling fans, refrigerator, and an optional TV/video pod.Carused.jp: BE4 grade descriptions incl. Royal 1988: Front grille gains the corporate FUSO emblem (May).CarPart.com.au: Rosa history & timeline 1990: Minor change (MC) with wider grille/headlamp spacing and interior updates; **automatic transmission** added; **4WD** introduced on long body; **independent front suspension** added on upper trims.JapanUsedBuses: BE4 overview & 1990 MC itemsJapanese Wikipedia: 1990 MC technical notes 1992: Rear air suspension added for select tourist grades (Royal).Japanese Wikipedia: BE4 timeline 1997: BE4 production ended; replaced by BE6 (fourth generation).Japanese Wikipedia: generation change

Design, trims and equipment Rectangular headlamps, a one-piece windshield and a lower beltline improved forward visibility and modernized styling. Trims included: School/Kindergarten (幼児バス仕様): Vinyl bench seats, heater only, folding passenger door, sliding windows, bright exterior colours. Standard Shuttle: Cloth/vinyl seats, heater, optional overhead racks, folding or sliding passenger door. Deluxe (デラックス): Reclining seats, overhead racks, optional curtains, roof A/C. Royal (ロイヤル): (from 1987) Tourist microcoach with reclining headrest seats, curtains, full-length overhead racks with lighting and ducts, ducted roof A/C, ceiling ventilator fans, refrigerator, and optional CRT TV/video pod; exterior brightwork and Royal badging were typical.Carused.jp: grade features incl. Royal

Engines and performance All BE4 models used Mitsubishi's 4D3-series inline-four diesels with gear-driven timing (no timing belt). Rated outputs (period figures) are shown in PS and SAE hp, with torque in lb·ft: Engine Displacement Induction Compression Power Torque Notes 4D31 3,298 cc Naturally aspirated DI ~18:1 100 PS (98 hp) @ 3,200 rpm @ ~2,000 rpm Base/School 4D31T 3,298 cc Turbocharged DI 17.5:1 118 PS (116 hp) @ 3,200 rpm @ 2,000 rpm Standard, Deluxe, Royal 4D32 3,567 cc Naturally aspirated ~18:1 110 PS (108 hp) @ 3,200 rpm @ ~2,000 rpm Shuttle 4D33 4,214 cc Naturally aspirated DI ~18:1 120 PS (118 hp) @ 3,200 rpm @ ~2,000 rpm Heavy-duty 4D34T (post-1990) 3,907 cc Turbocharged ~17.5:1 155 PS (153 hp) @ 3,200 rpm @ ~2,000 rpm Post-MC Royal/Deluxe Wikipedia: List of Mitsubishi Fuso engines (displacements/typical outputs)CarPart.com.au: BE4 timeline & engine step-up to 4D34T

Transmissions, gearing and speeds A 5-speed manual was standard throughout the BE4 era; an automatic was added after the 1990 MC.JapanUsedBuses: 1990 MC Typical long-body axle ratios were around 4.875:1—a figure also shown in later Rosa specification tables—and 16-inch commercial tyres (205/85R16).Mitsubishi Fuso (Rosa JP brochure, later generation): final-drive 4.875 & 205/85R16 shown as typical

5-speed manual (typical ratios & speeds with 4.875 axle, 29-inch tyre, 4D31T @ 3,200 rpm) Gear Ratio* Road speed @ 3,200 rpm 1st ~5.00 ~ 2nd ~2.80 ~ 3rd ~1.60 ~ 4th 1.00 ~ 5th ~0.77 ~ Representative period values; exact ratios varied by GVW/market.

4-speed automatic (post-1990, representative) 1st ~2.80, 2nd ~1.55, 3rd 1.00, 4th ~0.71; with a 4.875 axle this yields ~ at ~3,200 rpm in top gear. (Period AT data are sparse online; values shown are representative of Rosa/Canter applications of the era.)

Operating range, cruise and governor Peak power occurs at ~3,200 rpm; governor cut is typically ~3,600–3,800 rpm. Best sustained operation is ~2,600–3,000 rpm; comfortable cruise is on level roads for 4D31T long-body buses.Minkara blog: driver shift points & speed observations (Japanese; anecdotal)

Chassis, suspension and brakes Pre-MC BE4 models used leaf springs front and rear. After the 1990 MC, upper trims adopted independent front suspension; 4WD appeared on long-body models; in 1992, some tourist models gained rear air suspension.JapanUsedBuses: MC featuresBIGLOBE (coach primer): BE4 code mapping (439=leaf/leaf; 449=IFS front; 459=IFS+rear air) Hydraulic service brakes with an exhaust brake were standard; front discs with rear drums were widely used in this era.

Dimensions and weights (long body, P-BE434F, c.1989) Length: ; Width: ; Height: Wheelbase: Seating: 26–29 Curb weight: approx. – GVWR: up to CarFromJapan: P-BE434F (1989) listing showing long body, 5MT, 4D31, leaf/leafMitsubishi Club CZ: BE4 dimensions

Fuel economy Operator reports vary with load and route. Period figures for long-body 4D31T buses in mixed shuttle duty typically fall around (≈), with fully loaded tourist service and continuous A/C dropping closer to (≈). (Published factory consumption for 1980s BE4 models is scarce online; values reflect operator/market data and period brochures for comparable Rosa/Canter drivetrains.)Minkara driver report (Japanese; indicative)

Known issues Age-related items reported by fleets and operators include overheating damage from neglected cooling systems (especially on turbo engines), oil leaks at rocker cover and crank seals, vacuum pump O-ring seepage, rear main seal contamination of the clutch, glow-system faults, wear in suspension and steering (bushings, kingpins, steering box), corrosion at stepwells/lower panels/roof seams, and shrinking window rubbers allowing water ingress. Original R12 A/C systems typically require conversion to R134a with new hoses and seals.CarPart.com.au: common issues & maintenance themes

Fourth generation (1997–present)

The fourth generation (BE6 series) is an improved version of the third generation. The design of the body of the bus was greatly modified, and the distance between the front axle and the door was considerably reduced. In addition, the taillights are round, different from the second and third generation. There are both Automatic and Manual models available.Fuso Australia In 1998, a super long body was added to the line-up, bringing the maximum capacity of all the vehicle to 34 people. In 2002, natural gas engine were offered to the Mitsubishi Rosa. Transmac in Macau was supplied with a dual-door version.

Body types

Short body (6.25 meters in length, 16- or 25-seater) Long body (7 meters in length, 16-, 23-, 25- or 28-seater) Super long body (7.73 meters in length, 23-, 24-, 29- or 33-seater) Kindergarten buses have a seating capacity of up to 39/41 (3x2 seat configuration), rear doors, auto door, automatic transmission.

Mitsubishi Fuso Rosa

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