M72 1958

Rough cleaned in machine cleaner then chemical cleaning then glass micro balls blasted and ultrasound cleaned as final painted with anti oxidation paint.

7 gnistor

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First aluminium M72 frame welds

7 gnistor

Wojciech Nosko

@peter.1 during welding it was setup differently now it's only for measurements

Karu .

Nice to see someone using a jig. 👍

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Fabricating oval pipe for upper part of the frame

5 gnistor

Aluminium chassis puzzle

6 gnistor

Cylinder honed sandblasted and painted only valve guides and seats remain 💪

7 gnistor

Wojciech Nosko

They don't have seals it's cast iron guide so oil is mandatory for lubrication it is possible to use new type guides in OHC engines such as Dniepr and Ural but only on intake on exhaust they fail quickly at least that's my experience

Ashley carter

Do these have valve seals? Or are they like a BMW and the "oil lubricates the valve guide"?

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