On Aurelia motors, with more drilled water passages, it is, in my eye, critical. I remove the plugs and use slightly larger diameter extra long aircraft drills to clean them out, and make new flush plugs or spot face and use commercial brass plugs DIN 908.
Ok, that sounds as I should do the same. Was hesitating due to the various plugs that have to be made. But you are right, if you do it, do it properly!
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Flaminia GT 3C, Flaminia Convertibile 3C, Flavia Convertibile 1.8, A112 Abarth, Flaminia Coupé 2.5, Fulvia Sport 1.3S, Unimog U900
Last edited by Tedesco; 01-14-2019 at 11:48 AM.