Mb5 rings

Dennis Ostrem /

Noob here- I’m restoring an mb5 nearly from scratch. I can’t seem to find out if the two rings are identical. There are no markings.

Re: Mb5 rings

you measure them with calipers.

https://myronsmopeds.com/category/engine/pistons/

Re: Mb5 rings

Dennis Ostrem /

What I meant to ask was- are they supposed to be the same/ can I put either one on top for example. I know there’s an expander under the lower ring. I also can’t tell if there’s an up or down side to each ring

Re: Mb5 rings

One ring is narrower , inside to out .

That goes over the expander , in the bottom landing .

Check for a slight bevel , inside to out . That goes up .

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