Re: 1930 7th Series- 320 engine- low compression issue- help sought...

Posted by TxGoat On 2024/4/11 20:49:00

85+ PSI sounds high for an earlier car. Ethylized gasoline was not widely available in 1930, if available at all, and low octane, low volatility, kerosene-like fuel limited allowable compression, even with improved Ricardo-type heads.