28-10-2018, 09:26 AM
The recommendation to regularly remove sump and gauze stem from the days of non additive oils when cars subject to short runs generated inches of sludge.
For my Austin and two successor cars of 50s and 60s I have always cut gasket from sheet cork, preferably reinforced or rubberised. Works even with short pieces butted. If cemented to one face can sometimes reuse. In the enthusiasm of youth I used to remove at every change. Need occassional tightening so not favoured commercially.
With Sevens there is no filter before the pump so vital that no cork chips or goo blobs get into sump, and that the gauze is not holed. As before many sump leaks are due to threads breaking into fluid. These need a fibre washer or possibly thread tape if can gaurantee none ever gets into sump.
Newcomers often do not realise that threads provide a helix aperture and if not into blind holes or sealed under the head will leak surprising amounts.This is rarely mentioned in texts and is often not self evident. For decades I ran a Javelin car. These are prone to leak water up the head studs and into engine and I ran pints through before the source was identified (no damage, but do not try with ball bearings)! And it was years before all the oil leaking threads were identified.
For my Austin and two successor cars of 50s and 60s I have always cut gasket from sheet cork, preferably reinforced or rubberised. Works even with short pieces butted. If cemented to one face can sometimes reuse. In the enthusiasm of youth I used to remove at every change. Need occassional tightening so not favoured commercially.
With Sevens there is no filter before the pump so vital that no cork chips or goo blobs get into sump, and that the gauze is not holed. As before many sump leaks are due to threads breaking into fluid. These need a fibre washer or possibly thread tape if can gaurantee none ever gets into sump.
Newcomers often do not realise that threads provide a helix aperture and if not into blind holes or sealed under the head will leak surprising amounts.This is rarely mentioned in texts and is often not self evident. For decades I ran a Javelin car. These are prone to leak water up the head studs and into engine and I ran pints through before the source was identified (no damage, but do not try with ball bearings)! And it was years before all the oil leaking threads were identified.