Flushing a crankcase out
Posted: Mon Sep 14, 2020 12:44 pm
Elsewhere you may have learnt of my tail of woe with regard to my little Beeza. To cut a long story short, the barrel is being re-bored, new piston rings etc but the bottom end is remaining intact (hopefully!).
I've fished out of the crankcase all the bits of piston ring debris that I can see but want to give the whole bottom end a good flush out and then a blast out with an airline. The Beeza has the benefit of an oil filter mesh and the pump at the bottom of the sump which can be accessed by removing a plate on the bottom of the crankcase. Removal of the plate and filter rather conveniently allows the sump to be completely drained without having to turn the bike upside down or anything similarly drastic!
What should I use to flush/clean out the crankcase. A friend has suggested petrol but that sounds rather too lively to be splashing a quart or so about so I was thinking paraffin but the period handbook I have (which isn't brilliant it has to be said) states in a number of places to never use paraffin! Why would that be? And what would you suggest?
Obviously I'll have to be quite careful to make sure all of the solvent (whatever is used) has been replaced with nice fresh oil (in the mains, big end etc) before reassembly and starting.
Any suggestions?
TIA
Alan
I've fished out of the crankcase all the bits of piston ring debris that I can see but want to give the whole bottom end a good flush out and then a blast out with an airline. The Beeza has the benefit of an oil filter mesh and the pump at the bottom of the sump which can be accessed by removing a plate on the bottom of the crankcase. Removal of the plate and filter rather conveniently allows the sump to be completely drained without having to turn the bike upside down or anything similarly drastic!
What should I use to flush/clean out the crankcase. A friend has suggested petrol but that sounds rather too lively to be splashing a quart or so about so I was thinking paraffin but the period handbook I have (which isn't brilliant it has to be said) states in a number of places to never use paraffin! Why would that be? And what would you suggest?
Obviously I'll have to be quite careful to make sure all of the solvent (whatever is used) has been replaced with nice fresh oil (in the mains, big end etc) before reassembly and starting.
Any suggestions?
TIA
Alan