Please correct me if I have this wrong. Are you wanting to remotely mount an oil filter? I have done this usually because the stock location is a P.I.T.A. and occasionally to route to a bypass auxiliary filter such as a toilet paper can.
If coming off the original filter mount a simple disk of Aluminium about 1 1/2 - 2",(40-50 mm),thick is all that is needed. Have a good look at the mounting face of an oil filter and mimic it. Drill and tap,(bore a hole and cut a thread to match the screwed in hollow stud in the block), a center hole. Cut a rebate between the center boss that the mounting stud is in and the outer perimeter,(a recessed area that mimics the area on the face of an oil filter that is the oil inlet, the area with holes spaced around the center),and rebate a groove for an O-ring outside of that where the OEM oil filter has one.
That takes care of the interface with the engine block.
On the fresh face facing the world now you need to tap an oil return in the center and an oil outlet that taps into the recessed area between the center stud and the outer O-ring. Use off the shelf fittings from a hydraulic supply shop,(hose doctor),run hoses to where ever you want to mount your filter. Remoter filter mounts are off the shelf items from filter manufacturers/retailers. If you have problems finding one and don't want to make one any good ships chandlers will have them in stock.
Have a look at the chart below. If you have access to a lathe this is a very easy job and needs no welding.
There is an old engineering adage K.I.S.S. - Keep It Simple Stupid and don't try and re-invent the wheel.
Using off the shelf parts wherever possible is something to keep in mind at all times. I hope this helps.
Sorry the chart is too big to upload but here is a link to where you can find the information you need:
www.hydraulicsdirect.com
A verynear and a set of thread gauges,(Imperial and metrickery), are all you need to get started.
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