by Don Stauffer <stauffer@[EMAIL PROTECTED]
>
Dec 20, 2005 at 09:05 AM
Bret Ludwig wrote:
> Don Stauffer wrote:
>
>>> In the late 1970s and early 1980s the USAC cars were putting out 1000+
>>>bhp out of the 166 CID Turbo Offy. On gasoline it is doubtful much more
>>>than 200-250 hp would have been possible.
>>
>>Because the engines were DESIGNED to use alcohol, and running 12 - 14 to
>>1 compression ratio.
>
>
> No the CR was probably 7 or 8 to 1. They were running in excess of
> 100" Hg MAP with a turbo sized for a linehaul truck engine. Normally
> aspirated 255 and 270 Offies were usually between 11 and 13:1.
>
True. I was talking about the CR of the NA engines. The effect of the
turbos was to bring cylinder pressures to at or above those of high CR
NA engines.
