In article , mm wrote:
On Mon, 26 Jan 2009 07:35:36 -0800, Steve Daniels
wrote:
On Mon, 26 Jan 2009 08:32:46 -0500, against all advice, something
compelled , to say:
GAS ENGINE HEMIS IN THE 60'S-70'S COULD HAVE 12:1
COMPRESSION RATIOS. TODAYS GAS CAR/ TRUCKS WITH HEMISPHERICAL
COMBUSTION CHAMBERS ONLY RUN ABOUT 8:1 COMPRESSION RATION.. IT TAKES
RACING FUEL TO BURN IN A 12:1 ENGINE OR THE ENGINE WONT HARDLEY RUN..
My Audi runs at 11.25:1 on 92 pump gas.
Without any knocking ever? I too thought that would be hard. Is
there a trick?
Sounds fairly reasonable to me. My 1995 Oldsmobile Delta 88 LSS has the
"3800 series II" engine. My owner's manual says the compresiion ratio is
9.4:1 and specifies 87 octane gasoline.
- Don Klipstein )