Fuel prices / efficiency

[JTesta1966 at aol.com]

In a message dated 2/18/00 4:02:30 PM Eastern Standard Time, dzug at delanet.com 
writes:

<< -Go for 15 or even 16:1 AFR at light cruise - just don't abuse the car with
 this setup and you're ok. >>

I run 16.2:1 in hiway mode, and bump hiway mode timing 3 extra degrees, my 
thought is that the lean mixtuire might raise CC temps, and the advance will 
lower it again. So far no bad effects and I've have experienced 4mpg on my 
car and 6 on a friends car on long drives where the car is in hi-way mode 
alot. BTW, this is a GN, I dont know if it helps you or not

<<-160 degrees Coolant temp is still better than 180 or 200 for economy>>

Again, in a GN fuel is added for by coolant temps...by way of temp/load 
multipliers. Dont know about your application, or even the values offhand, 
but I'd haveta think a hotter engine would be more efficient.

<<-loose convertors bad for economy  - Lock it up earlier -?>>

Wont do much, except possibly increase load at lower speeds, using more fuel.

<<-good excuse for installing a supercharger - payback is sooner at those gas
prices!
>>

Did you know the Thunderturd SC's used 60+ hp to turn the SC at WOT? Imagine 
what the 220HP rating would be if it had a turbo. I haveta think a turbo is 
almost free HP. Only thing you have slowing you down is backpressure. But I 
think I'd take 20hp loss in backpressure over 60+ due to SC drag

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jim Testa                                         TType86 on #BuickGN
jtesta1966 at aol.com                               buick.fiendish.net:6667
ASE Master Technician            NJ Lic. Motor Vehicle Inspector
L1 Adv Eng Perf Certified     NJ Licensed Emissions repair Tech
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