Piston making for a modeldiesel engine at home (MK-16 rebuild) Part 1

Hello again for a very interesting episode.In this clip I show you,how I make my pistons self. Its a part of the rebuild of my MK-16, aprox.1956.
I use always old carengine camshafts.With that material( high grade castiron) I got good expirience in the past. I done a lot pistons so far, but in the begining,I lost a lot work,because the expirience was missing.The diesels got moore closer tolerances than a glow engines,because of the high compression.
The old MK-16 was in very bad shape,impossibel ,to be a runner.The rear disc was worn out,the 2 bearings, very bad,even one broken....the prop collector was not from this engine (and broken also) and the most important thing,no compression at al.
I buy a lot special tools,what makes it possibel,to do this work.But its stil a kind "on the edge" job. Its not easy to do it with this hobby equipment.
In 2 evenings with each moore then 2,5 houers,It was finally done.
...But I make a mistake( also a lot in the text,ha,ha...sorry)
...I shoud first make the final size with the grinding as first step...and after that,drill the wrist pin hole. .Because the holes have a influence on the grinding pattern,its moore accurate to grind a closed surface.
Because of that mistake,I got extra work,to get the piston lapped wel and sealing wel.Its now oke,but next time I must not forget it...save much time,and fare better result! I l also dont make the rings on the outer piston. The wal thicknes is less like the orginal piston.I wil risk a crack forming or even a broken part...so I deside not to take the risk.It run fine anyway without it.
The MK-17 also dont have it anymoore...But I see this strange aplication also on my Russian K-16 engine from 1950 !..same factory I asume. )
I hope you like the visit in my smal workshop...enjoy part 2!

Category:

Autos & Vehicles

Tags:

• Model
• dieselengine+mk-17+mk-16+
• pistonmaking