Yamaha TZR250W
Founders Theatre fountains - 1990
These specifications were sourced from REVS magazine and apply to the NZ model.
| Engine:
| 2 stroke liquid cooled parallel twin
|
| Bore and Stroke:
| 56 x 50.7mm
|
| Corrected Compression:
| 7.4 to 1
|
| Uncorrected Compression:
| 14.2 to 1
|
| Maximum Power:
| 63PS (47KW) @ 9500RPM
|
| Maximum Torque:
| 37.3NM (3.8kg.m) @ 8000RPM
|
| Carburettion:
| 2 x 32mm front mounted Mikuni
|
| Gearbox:
| 6 speed
|
| Chassis:
| Aluminium cast/extruded 'Deltabox'
|
| Wheelbase:
| 1380mm
|
| Dry Weight:
| 136kg
|
| Front Wheel/Tyre:
| 110/80 x 17" |
| Rear Wheel/Tyre:
| 140/70 x 18" |
From memory only 20 or so of these bikes were imported into New Zealand to meet homologation and make them eligible for production racing.
YAMAHA TZR 250 Reverse Psychology at work (and at play!) by Ross McKay
An article about the New Zealand model TZR250W 3MA-01 from a motorcycle magazine in 1990.
I have excluded the bad quality photos.
YTB105.zip (543KB)
Scans of Yamaha Technical Bulletin 105 outlining modifications to the TZR250W 3MA-01 including exhaust system modifications.
Technical Data
General data on Speed Limiters, CDI's, Wiring etc.
Gives some further details on the modifications outlined in Yamaha
Technical Bulletin 105.
Schematic of the CDI output stage
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