<VV> turbocharger cooling

[Dave Thompson]

OK,
I have a 63 Spyder clone with a 64 drive train. I'm on my third thermister.
Each one read slightly different on the CHT instrument so I know that the
CHT instrument is not totally accurate. With that in mind, On surface
streets, I currently indicate about 375 degrees. After a minute or two at
freeway speeds it raises to about 425 degrees. I have never seen it get any
higher than that. When I come off the freeway, it comes back down after a
minute or two of surface street driving. If the CHT is above 375, I let my
engine idle until CHT is around 375 before shutdown. However, if I drive for
a few blocks and the CHT is at 375 or below, I just shut down when I stop. I
use my CHT to determine if I need to idle before shutdown. Of course, if I
had just jumped on it to get some boost, I let it idle or drive moderately
for a few blocks before shutdown.

With the string that is going on here I wonder if I should idle for a minute
or so before every shutdown. What are you guy's opinions on my current
procedure? Should I modify it? If so, How?

Dave Thompson
36 Spyder vert
Westminster, CA