The Mazda (RA13S) Roadpacer AP

jdm_master · **Posted:** Fri Mar 30, 2012 6:21 pm

Another rare one from the Mazda Rotary vault is the Roadpacer AP with only 800 made from 1975~77. It was based on the Holden HJ Premier sedan from Australia and powered by the venerable 13B...

jdm_master · **Posted:** Fri Mar 30, 2012 6:23 pm

RA13S Specs:

Make: Mazda
Model: Roadpacer AP
Chassis-code: C-RA13S
Year(s)-produced: 1975~77
Total-production: 800
Model-type: Type-U (5-seater)/Type-V (6-seater)
Options: A/C, P/S, P/W, P/L, P/M, Trunk Cooler
Body-style: 4-door sedan
Body-length: 4850 mm
Body-width: 1885 mm
Body-height: 1465 mm
Wheelbase: 2830 mm
Front-track: 1530 mm
Rear-track: 1530 mm
Ground-clearance: 180 mm
Curb-weight: 1565 kg (Type-V)/1575 kg (Type-U)

Engine-code: 13B (REAPS)
Engine-type: twin-rotor Wankel
Engine-dimensions: 622x637x670 mm
Engine-weight: 158 kg
Combustion chamber volume: 654 cc x 2
Displacement: 1308 cc
Compression-ratio: 9.4:1
Compression-pressure: 9.0 kg/cm2 @ 280 rpm
Operating oil pressure: 11.0 kg/cm2
Induction: single 4-bbl downdraft Hitachi carburettor (KCH348)
Ignition: single distributor (twin-points)
Firing-order: 1-2
Max.power: 135 ps @ 6500 rpm
Max.torque: 137 lb-ft (19.0 kg-m) @ 4000 rpm
Port-timing: Intake opening @ 32 deg ATDC
Intake closing @ 40 deg ABDC
Exhaust opening @ 71 deg BBDC
Exhaust closing @ 48 deg ATDC
Oil-capacity: 6.3 l
Coolant-capacity: 10.2 l
Thermostat-type: wax (opening temp 88 +/- 1.5 deg C and fully open @ 100 deg C)
Point-gap: 0.45 +/- 0.05 mm
Dwell-angle: 58 deg +/- 3 deg
Idle-speed: 720 +/- 20 rpm
Ignition-timing: 20 deg BTDC (Leading) @ 720 rpm
5 deg BTDC (Trailing) @ 720 rpm
Capacitor-value: 0.27 +/- 10% microfarads
Plug-type: NGK BR6EM or BR7EM
Plug-gap: 0.85~0.95 mm
Electrical: 12v w/NS40Z 35Ah or NS60 45Ah battery
Starter-type: M004T16371 (2.0kw)
Alternator-type: AH2063T (12v-63A)

Drive-layout: front mounted engine (longitudinal)/rear-wheel-drive
Transmission: 3-speed automatic transmission (JATCO)
Gear-ratios: 1st-2.458:1
2nd-1.458:1
3rd-1.000:1
Rev-2.181:1
Final-4.444:1 (9T pinion/40T crown-wheel)
Diff-capacity: 1.4 l (SAE 90 GL-5)
Suspension: front-double wishbones, coil-springs, sway-bar and shocks
rear-4 link w/coil-springs and shocks
Vehicle height from fender center line: front-390 mm/rear-373 mm
Brakes: front-disc (drums were also available) (servo-assisted)
rear-drum w/leading and trailing shoes (servo-assisted)
Handbrake adj.: 5~7 notches (self-adjusting)
Brake master dia.: 1"
Servo dia.: 10.5"
Front wheel caliper piston dia.: 2-5/8"
Rear wheel cyl dia.: 7/8"
Stopping distance: 14.0 m from 50 km/h
Steering: worm & roller (power-assisted)
P/S fluid: ATF Type-F
P/S capacity: 1.1 l
Steering-ratio: 17.5:1~11.0:1
Turning-radius: 5.7 m
Caster trail: 1.00 mm
Side-slip: 0 +/- 3.00 mm
Toe: 3 +/- 3.00 mm
Steering wheel dia.: 406 mm
Tire-size: 7.50-14-4PR or F78-14-4PR (1.6 kg/cm2)
Rim-size: 5JJx14WDC
Fuel tank capacity: 75 l
Top speed: 103 mph (165 km/h)

jdm_master · **Posted:** Fri Mar 30, 2012 6:27 pm

Some pics of the RA13S...

gypsy · **Posted:** Fri Mar 30, 2012 9:59 pm

jdm_master · **Posted:** Sat Mar 31, 2012 12:35 pm

A few more shots of the RA13S...

jdm_master · **Posted:** Sun Apr 01, 2012 12:57 pm

Here's some close up pics of the black Roadpacer Type-U from wasabi's vids...

RestoreMaz · **Posted:** Mon Apr 02, 2012 4:24 am

jdm_master wrote:

Another rare one from the Mazda Rotary vault is the Roadpacer AP with only 800 made from 1975~77. It was based on the Holden HJ Premier sedan from Australia and powered by the venerable 13B...

Unless your a bad journalist on australian commercial TV, its vulnerable.

jdm_master · **Posted:** Mon Apr 02, 2012 4:06 pm

Yes i am Dave haha :lol:

Teighballs · **Posted:** Tue Apr 03, 2012 12:39 am

one of these for sale in new zealand at the moment

http://www.trademe.co.nz/motors/used-ca ... 500286.htm

The Mazda (RA13S) Roadpacer AP

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