3T D7 Dry Air Filter Conversion

Unfortunately the route the air takes through the oil bath air cleaner (down the center pipe to the bottom and then outward and up through the screens and metal wool packing) is opposite to the dry type where the air comes in on the outside swirls around usually and then passes through the filter moving inward to the center and then out the end to the intake manifold.

There are some vertical style cleaners with the dust cup on bottom that have the internal passages to use the dry filters, but it would not be as simple as gutting an oil bath type and putting in a dry filter cartridge.

[quote="ccjersey"]Unfortunately the route the air takes through the oil bath air cleaner (down the center pipe to the bottom and then outward and up through the screens and metal wool packing) is opposite to the dry type where the air comes in on the outside swirls around usually and then passes through the filter moving inward to the center and then out the end to the intake manifold.

There are some vertical style cleaners with the dust cup on bottom that have the internal passages to use the dry filters, but it would not be as simple as gutting an oil bath type and putting in a dry filter cartridge.[/quote]

I agree that many dry paper filters flow from the outside to the inside, but every Pete and Kenworth with externally mounted air filter assemblies flow from the inside to the outside.

If you need the increased airflow from a paper filter, simply modify your housing to take a paper filter. Just be aware that without an inner air filter the filter should never be blown out. If you are ever going to use it as a working tractor, I would suggest leaving it as an oil bath filter.