M Benz bypass oil filter

[carfan]

old MBenz with auxiliary bypass oil filter

(modified with modern spin-on filter inside)

- There are 3 fittings on it

1 ) inlet which comes from engine

2 ) return to engine which has an approx 1.2mm restrictor hole & connects to the centre of the spin-on

3 ) outlet which leads to a T for oil pressure gauge & an oil supply line for a cable driven (from trans) oil pump for the central chassis lubrication setup

There is a strip of metal across the back of fitting (3 ) ,not sure if there was originally a ball or...
Any opinions ?

Also slightly concerned that if the central lube pump & pipework to the various points lets oil
flow too easily ,will get a drop in engine oil pressure.

Some cars just had the oil pressure gauge from fitting ( 3 ) which wouldn't be a problem.

Thanks in advance for advice / opinions

 

[JHZR2]

Car? Engine? year? Pic of the filter or at least the assembly?

My OM616 and 617 engines have a full flow element that has a built in bypass where the oil goes through cotton gin waste.

 

[carfan]

'30s flathead 6 cylinder , filter unit is mounted on bulkhead.