KTM Flywheel Thread Die

[454MRW]

Has anyone found a source for a left handed thread die for a KTM crank/flywheel end shaft. I am working away from home and can't find the thread size specs to see if I can locate one on the web. The thread size from the parts book and/or any help would be greatly appreciated. Thanks, Mike.

Michael R. Winter
I enjoy rebuilding and appreciating Pentons!
1974 250 HS Pentons-1980 KTM 175-400'S

[Merlin]

.....Mike, here you go, real nice people....http://www.victornet.com/cgi-bin/victor/products.html..........

[tofriedel]

Mike,

I do not have a source for a die, but I have saved a number of crank ends by only using a thread file.  It works on both right and left hand threads.

The file I have has 8 differnt thread sizes to choose from.

Good luck,

Tony

[454MRW]

Does anyone have access to the engine parts book to see what the thread size is? I will get a thread file, but would like to have a die to clean up the threads afterward. Mike

Michael R. Winter
I enjoy rebuilding and appreciating Pentons!
1974 250 HS Pentons-1980 KTM 175-400'S

[3putt]

Hi Mike,  I checked the KTM engine parts book and find the following thread size for the crank end nuts 250 and 400 as follow,
Mag side nut is 12 X 1 L/S, and opposite side is 18 X 1.5 Din 936.
My home phone if you care to call and discuss while I look at the book is 724-745-4231. I have used the supplier Merlin is referring to with good results, but the min order is $25 as I recall so you may wish to look over what they have and be prepared to meet the min.
Regards,    Nelson McCullough

[3putt]

Mike,   You did not indicate the engine size you were wanting, and so a word of clarification, I am looking at GS6 engine manual.
For the 125 and 175 engines the Mag nut is also M 12 X 1 L/S, but the opposite side is M 14 X 1.5.   My earlier post referred to 250 and 400 engines out of the GS6 manual.   I do NOT have a manual for reference later than the GS6 engines.   Nelson McCullough

[454MRW]

Thank you Tony, Merlin and Nelson, I am working on a 78 250 KTM engine. I will be picking up a thread file and also ordering 2 12mm  X 1 LH dies to clean things up afterwards. One for me and another for Gary. Mike

Michael R. Winter
I enjoy rebuilding and appreciating Pentons!
1974 250 HS Pentons-1980 KTM 175-400'S

[tofriedel]

Mike,

Every manual I have on KTM motors from 125's through the 495's (1972 to 1981) uses the 12 X 1 L/S nut on the magneto side.

Tony