At 02:01 PM 9/26/99 , Pat Kelly wrote:
>Colorado for nationals? The last time I ran our 7 at high altitude (anything
>2000 ft, this was a 6000 ft; isn't Colorado Springs somewhere around 5000
Yes, actually mid-5's at PPIR, but less than 6000. The world starts changing
dramatically about 7500ft... and its a whole different world at 10000ft.
But you have a valid point...
>I ran it on the lowest octane available to compensate for the lack of oxygen
>in the air. Those who ran on high octane had a lot of trouble with carburetion
>(carburetion is a lost concept among the newer cars, but it still exists in
I'll let those with direct experience jump in on the issue of carburetors.
With newer FI cars, I've noticed little effect... actually 100 degree temps
have more of a draining effect on my car than 5800ft does. I've heard of a
few people who have done minor re-tuning of their cars for that altitude,
but I think most run just fine without thinking about it.
You _do_ use lower octane gas, but you don't even have to think about that...
"super" gas in CO Springs is 89-91. In fact, for FI cars, the biggest
problem may be all the unexpecting drivers panic'ing (unnecessarily) when
they arrive and cannot find a gas station that sells their
normal 93 octane gas. ;^)
But for all those older cars, ... how about some RMDiv people jumping in?