With 152 mains & 1 shim the plug insulaters were white to very light tan & with a brief period at idle (seconds) the outer metal ring would accumulate soot. No, I didn't do a WOT plug chop, but that isn't necessary when one puts it all together.
With 155 mains & no shim the idle is better (smooth @ 1000 RPM), but still seems a touch rich. I'll lean the screws some more & see what happens with the plugs.
If I don't need the 40 pilots that's fine with me.
Last edited by B02S4; 11/17/2008 10:38 AM.
