9n oil filter tubing routing

As fer yer missing oilfilter, while you can "find" use N-oilfilter canistors, sometimes it is eazier to buy a PH-8A spin-on oilfilter adaptor, fabricate an adaptor bracket. ($25, cheap) Very common. Still haffta drain-it thru the governor cup..... .....Dell

The PH-8A filter and a "head", designed for "full-flow use, will flow too much oil, and drop the engine's oil pressure without the restrictive oriface that is present in the original cartridge filter housing.

If you should decide to go to a spin-on filter, get a WIX "head", # 24755. It will have 1/8" female pipe tappings, just the thing for the brass fittings already used with the existing filter, and each replacement cartridge has a tiny, built-in flow restrictor DESIGNED for this bypass use.

There are three filters that fit that head, WIX #'s 51320, 51051, and 51050, listed in order of larger physical size.

This "head" and filters are marketed just for these conversions.

NAPA, or others likely have these parts under their own numbers.

With the correct filters, designed for bypass use, that is all done for you!

Also, the filter media is different in the filters designed for bypass use (will catch smaller particles).

And, it's not MY thinking, the setup is prominently shown in the WIX Master Catalog, "For Small Gas and Diesel Bypass Filter Conversion From Cartridge To Spin-on Use".

I have used several over the years, and have one "on the shelf" for a project I have going.

I'll post a picture tommorrow night. (If I don't forget!)

Come to think of it, I HAVE posted a scan of the catalog photo, and it's still on the server:

They also make a similar setup for "LARGE" gas and diesel engines. (Think up to around 1000 CID!)