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md8810 · 05-01-2020, 07:33 PM

Had the exact same problem with an 8ba engine. It was suggested that the combination of close piston top to head clearance and the rod bearing "float" under the described driving conditions causes the slightest noise as described. I had the heads domed for slightly more piston clearance. problem solved.
Thanks to Clyde at C&G.
Mark

05-01-2020, 07:33 PM	#10
md8810 Senior Member Join Date: May 2010 Location: North San Diego area Posts: 100	Re: Noise at higher RPM? Had the exact same problem with an 8ba engine. It was suggested that the combination of close piston top to head clearance and the rod bearing "float" under the described driving conditions causes the slightest noise as described. I had the heads domed for slightly more piston clearance. problem solved. Thanks to Clyde at C&G. Mark