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As part of using Evans NPG waterless coolant
I bought a 17 mm Chrome plated 3/8th drive socket
and slipped it inside a new coolant bypass hose
and installed on my Magnum 360 V8.

This closed up the bypass passageway to a three eighths square.

I was hoping that the partially restricted bypass
would increase full throttle engine maximum cooling enough
to eliminate audible pinging
starting about 3800 RPM when using
87 Octane gasoline in
+95 degree North Carolina summer weather
climbing a 6 percent grade hill.

There was no change after the bypass restriction.

Switching from 87 to 92 Octane would totally eliminate the full throttle pinging.

Running straight water as coolant with no thermostat would also eliminate the pinging on 87 Octane.

Removing sparkplugs from Cylinders 7 and 8 and spraying in official Chrysler Combustion Chamber Conditioner foam in, then reinstalling sparkplugs would eliminate the full throttle pinging on 87 Octane, but only for about 3 to 4 days.

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