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HardScrabble
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I was reading a coupleof articles this past week where Robert Yates was talking about an engine he built for the endurance races at Daytona based off of Ford's latest generation of 4.6 liter V8's. Not a lot of technical info just general stuff. He is basically trying to convince NASCAR to move to these engines.
He made a remark which caught my eye though. In talking about the 4 valve per cylinder arrangement of these newer engines he made a comment that now the engine builders in NASCAR are lifting a single valve one inch.
I have not been involved in engine development for about 25 years or so, so my knowledge is outdated at bes. But, back in those days the mention of one inch of lift in a small block which was to last for a minimum of 500 miles and reach 9000+ RPM for much of that distance would have gotten you a visit from the men in white coats. Truth be told even talking 9000 RPM for that distance at any valve lift might have had the same result.
Anyways, the question is was Robert was just seriously rounding up valve lift, or is this a realistic representation?
He made a remark which caught my eye though. In talking about the 4 valve per cylinder arrangement of these newer engines he made a comment that now the engine builders in NASCAR are lifting a single valve one inch.
I have not been involved in engine development for about 25 years or so, so my knowledge is outdated at bes. But, back in those days the mention of one inch of lift in a small block which was to last for a minimum of 500 miles and reach 9000+ RPM for much of that distance would have gotten you a visit from the men in white coats. Truth be told even talking 9000 RPM for that distance at any valve lift might have had the same result.
Anyways, the question is was Robert was just seriously rounding up valve lift, or is this a realistic representation?