Quote:
Originally Posted by Vettezuki
Ron, if you're building up your engine and have any intention to do flying mile type stuff, I'm under the ipmression ring gaps are critical for blown applications. Basically they have to be kept much looser so they can expand at the much harsher long WOT period, otherwise they can actually melt. That's what I remember from the later cobras. Actually might been the piston heads themselves that started binding in the motor. The down side of course is that you'll have a "loose" motor for more normal driving.
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I plan to gap the rings to .022 for the top ring and .018 for the second ring. I'm also going to be running Probe SRS pistons and will have the bore finish honed for a .0045 piston-to-wall clearance just like we did with the 331 we built for Eric's Mustang.