Bill,
Are you dead-sure about the CR...I mean, did you quantify all volumes and compute mathematically?
Of the face of it, you should be OK with that CR and 92 octane......but, the combination of 5th gear (is that OD or do you have a six speed?) and a relatively low numerical rear gear jack up the cylinder pressures during your maneuver and put you into pre-ignition or detonation....
Have you read your plugs....? Have you tried a colder plug? Have you richened the jets in the carb? Have you quantified at what throttle position detonation occurs first?
Yeah, slow down that advance curve into the 3K range....you get there pretty fast anyway...*G*
Pat
http://albums.photopoint.com/j/View?u=1570936&a=11937754&p=42910787.jpg
Are you dead-sure about the CR...I mean, did you quantify all volumes and compute mathematically?
Of the face of it, you should be OK with that CR and 92 octane......but, the combination of 5th gear (is that OD or do you have a six speed?) and a relatively low numerical rear gear jack up the cylinder pressures during your maneuver and put you into pre-ignition or detonation....
Have you read your plugs....? Have you tried a colder plug? Have you richened the jets in the carb? Have you quantified at what throttle position detonation occurs first?
Yeah, slow down that advance curve into the 3K range....you get there pretty fast anyway...*G*
Pat
http://albums.photopoint.com/j/View?u=1570936&a=11937754&p=42910787.jpg
