indentification please.

[bigk]

I have just picked up a job lot of KTM's and need some help identifying them please. Here are the details and what I think they are: 1980 125GS VIN:003-45067, ENG:0-5002233. 1980 125GS: VIN:012-250992, ENG:0-5004895.
1981 250GS: VIN:012-26937, ENG:1-5413081. 1980 400GS: VIN: 010-22178, ENG:0-3603660.
There is also a couple of twin shock, water cooled 125's to come, 1981? Any help appreciated.
Cheers,
K

[oz555ktm]

Ok

Fram No#  all start with 3 or 4 Numbers

thay tell you the Date and month thay were made . EG

the 1980 125 Vin starts with 003-#####
up to 1980 the first number was the year 0 =1980 and the 03 is the month.

the engine start with the Engine Family 500 first 125cc 501 2nd generathion 125 502 3rd and so on..

250cc eninge ID 540 = 250cc 541 2nd generathion
350cc up to 495 are the 560 Family
 
if you need more InFo you can Call Me and I will try to Held
you .Dennis 0411 598 818

[bigk]

Thanks Dennis, I'm pretty sue I've soughted it out. The engine number for what I was told was a 400 is actually a 420. Whati thought was a 3 is a 5.
Chrs,
K

[oz555ktm]

The engine mite have 560 but dose it have any letters at the
end of the engine no# like a A or a B

 A = 350cc

 B = 390cc

Ktm Did put 350cc and 390 cc top ends on the 560 engine

560 did mean that it was a 420cc 

560 = 420cc = 85mm piston

561 = 350cc = 77.5mm

562 = 390cc = 82mm

563 = 495cc = 92.5mm

[bigk]

Thanks again, it got the better of me so I took the head off for a look. 77.5mm piston = 350. Which engines have the same stroke, 350,390,400,420?
Cheers,
K

[oz555ktm]

All the same

The 560 engine are all the same But the 563 is bigger wear the
cylinder fit into the engine cases

so you can find a 390 or a 420 top end to put on your 350.

Did the engine No# have a Letter at the end of it

[bigk]

Thanks once again. No letter at the end of the engine number.
Cheers,
K