On 1-Nov-06, at 5:31 PM, don spence wrote:

> John/Neil
>  If I remember correctly, the Corvair engine, at least the 140HP (4
> carb) and 180 HP (turbo) had sodium cooled exhaust valves. Just
> another bit of "engineering advice" GM picked up  from VW?

A often-heard factoid in the old days, but not true. The turbo heads have
valves that are special to those engines, but they were never
sodium-filled/cooled.

Vern

Corvair guy