Building up a 100 there really are not that many places in which to find good information all together. The goal of this thread is to try to put as much information about the 100 and 125 in one place as possible. I will try to keep up with anything that is added in the thread and add it to the first node here.
Location for the shop manual:
http://www.manualedereparatie.info/en/download/honda-cb-100-cl-100-sl-100-cb-125-s-cd-125-s-sl-125-1997-Service-manual.html
Large Build Threads:
http://www.dotheton.com/forum/index.php?topic=30330
http://www.dotheton.com/forum/index.php?topic=25767
http://www.dotheton.com/forum/index.php?topic=20566
http://www.dotheton.com/forum/index.php?topic=18499
CB CL 100
Motor
Bore and stroke 50.5mm x 49.5mm
Compression 9.5:1
Displacement 99cc
Horse Power 11.34hp
Piston Pin Size 14mm
Piston not interchangeable with 125 without changing connecting rod
Earlier 1 piece cb125 heads use the same valves
A later 2 piece cb125 head or a XR200 head will provide larger valves while still being able to bolt on
Electrical
6v (interchangeable with 125)
Information on 12v Conversion http://www.dotheton.com/forum/index.php?topic=31121.msg336570#msg336570
Body
CB CD SL 125
Motor
Bore and stroke 56mm x 49.5mm
Compression 9.5:1
Displacement 122cc
Horse Power 11.84hp
Piston Pin Size 15mm
For earlier 125 heads (one piece) valves are interchangeable with the 100
For earlier 125 heads, upgrading to a later 125 two piece head will provide larger valves
A XR200 head will provide larger valves while still being able to bolt on
Electrical
6v (Interchangeable with 100)
Information on 12v Conversion http://www.dotheton.com/forum/index.php?topic=31121.msg336570#msg336570
Body
Location for the shop manual:
http://www.manualedereparatie.info/en/download/honda-cb-100-cl-100-sl-100-cb-125-s-cd-125-s-sl-125-1997-Service-manual.html
Large Build Threads:
http://www.dotheton.com/forum/index.php?topic=30330
http://www.dotheton.com/forum/index.php?topic=25767
http://www.dotheton.com/forum/index.php?topic=20566
http://www.dotheton.com/forum/index.php?topic=18499
CB CL 100
Motor
Bore and stroke 50.5mm x 49.5mm
Compression 9.5:1
Displacement 99cc
Horse Power 11.34hp
Piston Pin Size 14mm
Piston not interchangeable with 125 without changing connecting rod
Earlier 1 piece cb125 heads use the same valves
A later 2 piece cb125 head or a XR200 head will provide larger valves while still being able to bolt on
Electrical
6v (interchangeable with 125)
Information on 12v Conversion http://www.dotheton.com/forum/index.php?topic=31121.msg336570#msg336570
Body
CB CD SL 125
Motor
Bore and stroke 56mm x 49.5mm
Compression 9.5:1
Displacement 122cc
Horse Power 11.84hp
Piston Pin Size 15mm
For earlier 125 heads (one piece) valves are interchangeable with the 100
For earlier 125 heads, upgrading to a later 125 two piece head will provide larger valves
A XR200 head will provide larger valves while still being able to bolt on
Electrical
6v (Interchangeable with 100)
Information on 12v Conversion http://www.dotheton.com/forum/index.php?topic=31121.msg336570#msg336570
Body