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Old 05-01-2020, 09:56 PM   #13
Lawrie
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Join Date: May 2010
Location: Qld, Australia
Posts: 4,215
Default Re: Noise at higher RPM?

Well you might be right about the carbon build up.
In the original 33 engine it had a carbon build up on the pistons that hit the heads ,I sounded like it had hammers tied to the crankshaft
Lawrie
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