[s-cars] 80tq: 20v Project Update, 415whp, 12.25, etc

James Bufkin jbufkin at austin.rr.com
Thu Nov 11 11:37:11 EST 2004


Good points Scott,

I was thinking about how to say that.  In my opinion a turbo car built and 
tuned at altitude will not have a significant losses.  (especially if its 
running high boost)  The lower ambient can be overcome with the 
turbocharger and some of the benefits cancel out the negatives.   i.e. 
bigger turbos work better in thinner air.     The Pike's peak cars are good 
examples of this.   The engineer's went after a target PR entering the 
engine and the lower ambient helped the exhaust.  The thin cold air just 
meant more boost and a bigger turbo, but there was no real inherant 
disadvantage with the turbo.  The real problem was the altitude change.

Thats why I think (in my opinion) the car will make the unadjusted number 
at sea level.   I also think, that the Colorado guys can't just go down to 
a dyno in KC and make some pulls.  Their cars would have to be tuned again 
to have any chance of making decent power without all kinds of bizarre 
stuff happening (Mostly not being able to maintain their current boost 
levels-hence they will loose some power).

James



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