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Re: Even a little roughness is too much for this customer
Posted to Technical Discussion Forum on 3/26/2020 4 Replies

The scope data is impressive but in the end I submit you'll be pulling at least the valve cover and find badly recessed exhaust valve seats, enough that the lifters have run out of design preload and are keeping the valve open slightly. Using a straightedge, y... Login to read more.

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