cranetruck

This from knfilters.com :
For maximum efficiency, diesel air filter restriction should be less than 25 inches of water vacuum, compared to a gas motor which uses only 10 inches of water restriction. Since diesels work harder at pulling air into the engine this creates a greater opportunity for dirt and silicates to enter the engine. Dirt or silicates in the engine can cause severe damage, including cylinder wall wear.

I measured 20 cm of water, which is 8 inches of water, so a new standard filter should be comparable to the K&N spec., unless I'm missing something here.

EDIT: The missing factor is the airflow. The K&N filter has a flow restriction of 4.3 inches of water (11 cm of water) at 350 CFM. We just need to figure the air flow for the multifuel engine under conditions reported above.

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Bjorn

MEP-018A (needs new generator head)

Avatar: XM757 in OK prepared for 1,000 mile trip home. Part of 6,000 mile journey in 2006.
1968 M49A2C modified with 1960 M756A2 truck bed and 1975 HIAB 765A knuckleboom, exhaust brake, VIC-1 and more.
1969 Ford XM757 8x8, 5-ton Pershing 1A truck tractor...the "improved MV".

"Some things can't be made better, just differently......a lot of things actually"