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SVT Shelby GT500
Engine upgrade: planning phase with Cams question
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<blockquote data-quote="RedVenom48" data-source="post: 16087599" data-attributes="member: 166576"><p>[USER=179203]@merkyworks[/USER] Think about it like this, if you take a piston and ring combination out of the the block and immediately reinstall it in the same cylinder, nothing has been changed to the the piston rings or liner. Its the same rings in the same hole with the same wear characteristics. No hone will be required. The car currently runs flawlessly so im not expecting to have any issues when I start to tear it down.</p><p></p><p>Now, I of course am assuming that the cylinder walls/liner are in great condition. If I pull it apart and find abnormal wear and or "damage" Ill have a decision to make at that point. </p><p></p><p>Now to really blow your mind, Lexus had a recent customer satisfaction program with 2007-2010 IS250 engines. We were replacing pistons and piston rings for a misfire concern. The factory was ADAMANT that we DO NOT touch the liners. No honing or machining, just install the new rings on piston, alternate end gaps and pop em in. No special break in procedure either, just assemble, start and go. And ya know what? Didnt have a single issue with the pistons and rings with the unhoned liners. Some of these engines had over 100k miles when we did the repair.</p></blockquote><p></p>
[QUOTE="RedVenom48, post: 16087599, member: 166576"] [USER=179203]@merkyworks[/USER] Think about it like this, if you take a piston and ring combination out of the the block and immediately reinstall it in the same cylinder, nothing has been changed to the the piston rings or liner. Its the same rings in the same hole with the same wear characteristics. No hone will be required. The car currently runs flawlessly so im not expecting to have any issues when I start to tear it down. Now, I of course am assuming that the cylinder walls/liner are in great condition. If I pull it apart and find abnormal wear and or "damage" Ill have a decision to make at that point. Now to really blow your mind, Lexus had a recent customer satisfaction program with 2007-2010 IS250 engines. We were replacing pistons and piston rings for a misfire concern. The factory was ADAMANT that we DO NOT touch the liners. No honing or machining, just install the new rings on piston, alternate end gaps and pop em in. No special break in procedure either, just assemble, start and go. And ya know what? Didnt have a single issue with the pistons and rings with the unhoned liners. Some of these engines had over 100k miles when we did the repair. [/QUOTE]
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Engine upgrade: planning phase with Cams question
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