2CV Port Polish

Nothing too aggressive but whilst I had the heads off I got the Dremel out and softened the hard edges in the inlet and exhaust ports.

2CV combustion chamber showing inlet and exhaust ports

These edges seem to be where the cast inlet meets the machined area in the valve bowls..  With a finger it was possible to feel the lip but with a small amount of grinding and polishing it now feels smooth to the touch.

Other than removing a few minor casting marks I didn’t do much as the ports were already reasonably smooth.

I doubt it’s actually going to improve matters measurably but this was the only opportunity I’m likely to have to do it, it didn’t take long, and I can now say it’s been done.