Nor is it a German one.
You probably mean to say 'Sieg heil!'.
Think about Einstein and wiener. If the e comes before the i, it's pronounced like Einstein. If the i comes before the e, it's pronounced like wiener (like you would pronounce it in English ).
German is not ambiguous in pronunciation like English. The letters make very specific sounds. Therefore if you know the two words have a different sound, they cannot be spelled the same way. And if they are spelled the same they will not make the sounds I believe you wanted to make here.
Dunka (I probably spelled that wrong)