What hone grit for moly rings?...

[cjshaker]

I'm wondering what the latest thinking is on hone grits for different types of rings used. I'll be replacing the rings in my 390 with moly faced rings since it'll be a heavy load hauler and I need to get a new hone. My old stones are wore out, but since my bores are not fresh, I'll probably use a dingle berry hone.

[Falcon67]

Check with the ring manufacturer.  It seems to run from 220 to 400.  I use a 320 hone and just split the middle.

[machoneman]

2X. See:

http://www.enginebuildermag.com/2006/01/high-performance-piston-rings-and-cylinder-finishes/

[cjshaker]

That's what I was going to do, check with the ring maker.

Thanks for the link, Bob. That's an interesting article.

[Ford428CJ]

That is your best bet! Always check with the ring manufacturer. They would tell you.... JMHO