testing higher airflow engine with timing, fuel flow, Y pipes and single pipes on 92.7 octane

Here's a Zeltex 101C octane test meter that I acquired on Racejunk.com for much less than the current new price of $11,000. It had been used for a few years by a dirt track owner for testing gas in some class of racers who were limited to using pump...

Reid Vapor Pressure TESTING! For race engine tuning, our biggest problem is stale race gas that racers buy unwittingly. Stale race gas can have excellent octane, but volatility can be poor due to the absence of important “light ends” of the fuel. Light ends are the...