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Africa Twin RD03 XRV650, 1988 and 1989 - Engine Restriction Details


It would appear that the restriction modifications cannot be ascertained on anything simple like engine number alone - if only things were that simple. Engine numbers for one market overlap with those of the other markets. I can only assume that batches of bikes were made for each market and the engine and frame numbers were just those of the items at hand. If you know better, then please let me know.

Also, the Honda Area (Market) Codes are my best guess. Again, if you know better then let me know.

Production years 1988 - XRV650J and 1989 - XRV650K, RD03 650cc.

Full Power models for markets B (Belgium), F (France), FI (Finland), IT (Italy), PO (Poland) and SP (Spain).

Model produced for market H (Holland) in 1989.

All models have the same cam-shafts and CDI units, the changes were to the Inlet Rubbers, which are called "Insulator, Carburetor" by Honda. There is also a carburettor change on the Swiss market models.

Standard Inlet Rubbers, Part No: 16211-MS8-000

Production year 1988, for all markets except Switzerland the carburettors are -

Front (Right Hand), Part No: 16101-MS8-621 (for 1988 only) or 16101-MS8-622

Rear (Left Hand), Part No: 16102-MS8-621 (for 1988 only) or 16102-MS8-622

I believe that theses should be matched, ie both ****-621 or ****-622.

The changes to the Swiss market models are different Slow Jets, Front and Rear Needle Sets and Vacuum Piston.

The standard parts are -

Slow Jet (#38), Part No: 99103-427-0380

Front Needle Set, Part No: 16131-MM9-621

Rear Needle Set, Part No: 16151-MM9-621

Vacuum Piston, Part No: 16111-MS8-004


Restricted models.

Market - Austria (Honda Area Code "AR")

Engine Nos: RC31E-5003423 to 5008451 for 1988 and

Engine Nos: RC31E-5100001 to 5103460 for 1989.

Inlet Rubbers (called "Insulator, Carburetor" by Honda): 16211-MR1-710


Market - Germany (Honda Area Code "G")

Engine Nos: RC31E-5000020 to 5008561 for 1988 and

Engine Nos: RC31E-5100006 to 5101907 for 1989.

Inlet Rubbers (called "Insulator, Carburetor" by Honda): 16211-MS8-610


Market - Switzerland (Honda Area Code "SW/HSQ")

Engine Nos: RC31E-5000031 to 5007423 for 1988 and

Engine Nos: RC31E-5100940 to 5103672 for 1989.

Inlet Rubbers (called "Insulator, Carburetor" by Honda): 16211-MR1-710

Carburettor, Right Hand (Front), Part No: 16101-MS8-683

Carburettor, Left Hand (Rear), Part No: 16102-MS8-683

The changes are -

Slow Jet (#35), Part No: 99103-427-0350

Front Needle Set, Part No: 16131-MS8-681

Rear Needle Set, Part No: 16151-MS8-681

Vacuum Piston, Part No: 16111-MF5-841



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Re: Africa Twin RD07a XRV750 - Engine Restriction Details

The XRV650 were built for the following markets in 1988:

Austria
Belgum
Finland
France
Germany
Italy
Portugal
Spain
Switzerland/HSQ (HSQ=?)

In 1989 the XRV650 were produced for the following markets:

Austria
Belgum
Finland
France/YB (No clue as what to YB denotes)
Germany
Italy
Netherlands
Portugal
Spain
Switzerland/HSQ (HSQ=?)
 

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I think interesting would be also to know what is the power output of the restricted models. I have a restricted RD03 and I actually don't know what is the power on it.
 
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