Novice mistake I'm afraid: I left the trumpet and base assembly in a strong caustic soda solution and forgot about it.......for three days!!
Result is that the aluminium base is completely useless and I haven't been able to remove the trumpets (which are ok).
I anyone dismantling an engine with no further use for the assembly which they might consider selling or am I destined for a trip to the breakers?
Trumpets and base: Rover 3.9
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Lord Steve,
Take heart, you are in exhalted company. When I was an apprentice, the boss of the overhaul workshop stuck a Sikorsky S-58T main transmission casing in the Magnus bath to strip the paint and varnish off it and being a Friday, one thing led to another and it was left in over the weekend................
Come Monday morning, all that remained of around US$10k worth of Magnesium casing were the steel bits.....
The big boss was unimpressed, but could do nothing as he had started the ball rolling with a last minute rush job on Friday......

Take heart, you are in exhalted company. When I was an apprentice, the boss of the overhaul workshop stuck a Sikorsky S-58T main transmission casing in the Magnus bath to strip the paint and varnish off it and being a Friday, one thing led to another and it was left in over the weekend................
Come Monday morning, all that remained of around US$10k worth of Magnesium casing were the steel bits.....



Cheers,
John
John