Rocker Arm Wick

Josh Hagan · Jan 8, 2017

Just wondering what the purpose of the wick on the Exhaust Rocker arms on the 400/700/800's. also are they necessary to replace in a rebuild. thanks Josh

EliG · Jan 8, 2017

They are there to slow the flow of oil down the rocker arm to lubricate the exhaust valves. Without them it is possible for a fair amount of oil to leak out of the exhaust. This was before valve stem seals came into use. Essentially they are the old fashioned pipe cleaners. When I overhauled my 400 diesel I replaced them.

Josh Hagan · Jan 8, 2017

Thank You. where were you able to find replacements?

Rocker Arm Wick

Josh Hagan

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EliG

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Josh Hagan

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