17-02-2020, 10:05 AM
The American Bantam sump, although still pressed steel, is made so that, instead of the bottom being parallel with the ground, is parallel with the bottom face of the crankcase. This has 3 advantages as I see it...
1. It holds more oil.
2. It gets better cooling from the flow of air.
3. Any rubbish (pieces of piston ring, dead insects etc) gravitate to the low end at the rear, and are thus more readily flushed out when you drain the oil.
The attachment shows a Bantam sump in a partly rebuilt state. Someone had fitted water cooling pipes for use in a boat - it was quite a mess.
I sold my Bantam recently but I have a feeling that there will be another A7 in my life. Perhaps I may then fabricate a mirror image of the Bantam sump for it.
Has anyone made a cast sump featuring a sloping bottom like Bantam used?
Ivan
Wellington NZ
1. It holds more oil.
2. It gets better cooling from the flow of air.
3. Any rubbish (pieces of piston ring, dead insects etc) gravitate to the low end at the rear, and are thus more readily flushed out when you drain the oil.
The attachment shows a Bantam sump in a partly rebuilt state. Someone had fitted water cooling pipes for use in a boat - it was quite a mess.
I sold my Bantam recently but I have a feeling that there will be another A7 in my life. Perhaps I may then fabricate a mirror image of the Bantam sump for it.
Has anyone made a cast sump featuring a sloping bottom like Bantam used?
Ivan
Wellington NZ