Thanks for your offers guys,
Nathan I have no side covers, so yes please I would gratefully like the side cover
Big K, there are a few small discontinued pieces that would help a lot, namely a footbrake torsional return spring (fits in behind the right footpeg braket) A good crank and a barrel that has a gallop left in it would be great. Maybe some other small fittings as well but thats what I can think of at the moment.
Oldyz, my research has the A2 (As far as KX80's go) as a 1980 model and Kawasaki's second model in the KX80 range 1979 A or A1 being the first.
It would seem that KDX80's from1979 through to 1981 share about 80% of the parts with major differences being the barrel/porting configuration and the round tubular swingarm similar to the 1979 KX80 retained for the 1980/81 KDX when the 1980 KX went to box section steel, side covers and few cosmetic items such as stickers and hub colour (silver instead of black). It also looks like the rear shocks are of the cam twist spring retainer (Pre load Adjustment) on the KDX and the reposition clip position style for the KX. The rear shocks on the KDX are silver/chrome and the KX are black.
I have only been researching for a few weeks, so I may be wrong but from pictures on bikepics and images off the web, I am reasonably confident that this is reliable guff.
It would seem the bore size did not change from 79 through to 82 for the KX and 79- 83 for the KDX 80. I am going off the piston part numbers.
The Connecting rod part numbers change after 1980 for the KX and after 1981 for the KDX.
Suzuki311 has offered that the crank pin diameter is the change and that another member has been down the track of reworking the crank halves to accept a readily available rod from the later model as the answer. I propose that an 82 (KDX) onwards crankshaft may also be an option as the Later KDX engines all appear very similar to the Earlier KX engines, in external appearance anyway. I cannot back this up in any way, it is just my hunch.
I am enjoying this project, it has been challenging to find model info and parts as well as the electrofusion bore research. I hope to fix this little grasshopper on a reasonable budget for my 14 Y.O Daughter to ride. I may have a turn as well, since most grown ups still hold a soft spot for a classic mini – who can resist.