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Mustang Forums
2011-2014 Mustangs
Engine/Tuning
Stock motor limits
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<blockquote data-quote="milas" data-source="post: 15600207" data-attributes="member: 180872"><p>Everything I've read is the rods will fail sometime after ~650 since they're not forged, and after ~800 the pistons are no good since they're not forged or coated. If you look at comparisons of the stock rods vs. Forged manley rods you can see the difference.</p><p></p><p>I don't think 650 is a magic number, it can happen due to a number of conditions at higher or lower HP, just the probability of failure starts going up significantly at that power level. Good tunes and fuel can save you from detonation or other failure modes, but the stock bottom end wasn't made to handle that power level for long.</p><p></p><p>I just cracked 650 on a stock 2014 block, and I'm looking to get my short block built to prevent failure. I get nervous going wot, but I still do it and haven’t failed yet. However, I know it's just a matter of time and probability. </p><p></p><p>Sent from my SM-G900P using Tapatalk</p></blockquote><p></p>
[QUOTE="milas, post: 15600207, member: 180872"] Everything I've read is the rods will fail sometime after ~650 since they're not forged, and after ~800 the pistons are no good since they're not forged or coated. If you look at comparisons of the stock rods vs. Forged manley rods you can see the difference. I don't think 650 is a magic number, it can happen due to a number of conditions at higher or lower HP, just the probability of failure starts going up significantly at that power level. Good tunes and fuel can save you from detonation or other failure modes, but the stock bottom end wasn't made to handle that power level for long. I just cracked 650 on a stock 2014 block, and I'm looking to get my short block built to prevent failure. I get nervous going wot, but I still do it and haven’t failed yet. However, I know it's just a matter of time and probability. Sent from my SM-G900P using Tapatalk [/QUOTE]
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