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Alan Roehrich · 11-18-2015, 09:59 PM

The quench is too tight. I can't get away with closer than 0.042" on a 4.165" bore with 0.0055" clearance. That's with a light piston, a light Crower rod, and a really good wrist pin. I'm near touching at that.

For a bracket engine, the valve clearance is too tight for comfort, too.

11-18-2015, 09:59 PM	#2
Alan Roehrich VIP Member Join Date: May 2006 Location: Murfreesboro TN Posts: 4,915 Likes: 996 Liked 1,043 Times in 274 Posts	Re: bbc clearances The quench is too tight. I can't get away with closer than 0.042" on a 4.165" bore with 0.0055" clearance. That's with a light piston, a light Crower rod, and a really good wrist pin. I'm near touching at that. For a bracket engine, the valve clearance is too tight for comfort, too. __________________ Alan Roehrich 212A G/S