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New Edge Cobras
Modular 5.0 stroker kits, any high mileage builds out there?
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<blockquote data-quote="IUP99snake" data-source="post: 13386072" data-attributes="member: 7060"><p>I'm not sure that the larger bore will reduce the side loading of the pistons on a stroker application because the length of the bore (or sleeve) from the top to bottom remains the same. Even though the bore/stroke ratio improves, the "bore length"/stroke ratio does not. </p><p></p><p>As a result of the less favorable bore length/stroke ratio, the wrist pin is moved up higher into the ring lands. Additionally the piston skirt is shortened to avoid contacting the counterbalance on the crank during BDC. </p><p></p><p>On a taller deck motor with the same (or longer) stroke, these modifications to the geometry of the piston would not be required. (Like with a 5.4). </p><p></p><p>It is these modifications to the piston that cause longevity issues in modular stroker applications.</p></blockquote><p></p>
[QUOTE="IUP99snake, post: 13386072, member: 7060"] I'm not sure that the larger bore will reduce the side loading of the pistons on a stroker application because the length of the bore (or sleeve) from the top to bottom remains the same. Even though the bore/stroke ratio improves, the "bore length"/stroke ratio does not. As a result of the less favorable bore length/stroke ratio, the wrist pin is moved up higher into the ring lands. Additionally the piston skirt is shortened to avoid contacting the counterbalance on the crank during BDC. On a taller deck motor with the same (or longer) stroke, these modifications to the geometry of the piston would not be required. (Like with a 5.4). It is these modifications to the piston that cause longevity issues in modular stroker applications. [/QUOTE]
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Modular 5.0 stroker kits, any high mileage builds out there?
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