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RE: N/A v. Turbo heads...
> > Are there any differences in the basic cylinder head castings used
> the N/A and turbo I5s?
> I believe the castings may be the same, but turbos have sodium filled
> valves, while N/A motors do not.
Ken, you're right, there was a big debate on the list a while ago on how
to dispose of the sodium filled jobs in a enviromentally responsible
type of way. Does anyone know why or what the advantage of sodium
filled valves is?