Ms-391 questions/help please.

[funkj62]

New to site, haven't found my answers in a quick search, so here it goes folks.

1. Is the Stihl ms-390 a chrome bore?( I think it is but not sure) I'm up to speed on nikisil and iron but not chrome.
2. If it's a chrome bore how do I prepare the cylinder for a fresh piston?
3. Ball honing a chrome bore seems to be very controversial, some say yes why others say absolutley not.
4. If chrome bore is scothbriting to deglaze acceptable for good ring seal? (Cylinder look good)
5. I'm planning on a using a pop-up piston and presently undecided on which manufacture.
6. What type of piston ring is reccomended, I see the "camera rings" tossed around why others reccomend the factory stihl.

Thanks guys, much appreciated.

 

[Czed]

New to site, haven't found my answers in a quick search, so here it goes folks.

1. Is the Stihl ms-390 a chrome bore?( I think it is but not sure) I'm up to speed on nikisil and iron but not chrome.
2. If it's a chrome bore how do I prepare the cylinder for a fresh piston?
3. Ball honing a chrome bore seems to be very controversial, some say yes why others say absolutley not.
4. If chrome bore is scothbriting to deglaze acceptable for good ring seal? (Cylinder look good)
5. I'm planning on a using a pop-up piston and presently undecided on which manufacture.
6. What type of piston ring is reccomended, I see the "camera rings" tossed around why others reccomend the factory stihl.

Thanks guys, much appreciated.

I've rebuilt a couple hundred saws just by
Using Emory cloth or sandpaper on a
Simple split mandrel i made out of wood or even a ink pen running a cordless drill
To deglaze it
Scotchbrite works but I'm too lazy.