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October 20, 2003
G'day Alan et al
Can't help with the combustion chamber volume. The kerosine keeps running out those large holes where valves should be!
The combustion volume depends on (amongst other things) how "proud" the valves sit off the seats. And since the head has no valves, and I have no new valves to try in it, and since I don't feel like buying two new valves - I can't answer your question!
But I do know I have machined over .100" off head faces before exposing the oil feed line. With the higher comp pistons available, it's unlikely you will need to ever take this much off. We run "fast road" engines at 9.5:1 to 10.5:1 with no problem on 98 octane fuels.
avagoodday
Colin
"Colin@SpriteParts" < colin@... > 26221
Posted on October 20, 2003 07:04 PM
Posted to category(s) Cylinder Head | Engine (external) | Engine (internal) | Fuel System | Gauges | Interior | Lubrication System | Technical Info | Tuning | US States
