Merc 2.0 max timing?

[merc1250bayliner]

With both black boxes removed what should I set my max timing to? I have heard conflicting numbers.

[25two.stroke]

Stock motor? What gas, compression, and max RPM you shooting for?

[merc1250bayliner]

Stock motor, stock compression, pump gas, 5500rpm or so.

[25two.stroke]

Stock motor, stock compression, pump gas, 5500rpm or so.

21 to 23 btdc

[merc1250bayliner]

Is that static time or while cranking?

[25two.stroke]

Cranking, WOT, all spark plugs out and grounded.

[Merc 2.5]

On a 2.0 all boxes removed and stock heads. I've heard a few rattle at 23deg. I'd stay at 21 no more