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2011-2014 Mustangs
Power-Adders
First Look: Whipple 2.3L W140ax for the 2011 5.0L Mustang GT
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<blockquote data-quote="mustangc" data-source="post: 9565920" data-attributes="member: 87570"><p>You are mostly correct. What kills rods is force, not necessarly horsepower. High power can damage rods, but overrevving an engine and (probably the biggest risk for the Coyote) preignition are much more common causes for overstressing a rod. If combustion takes place too soon before the piston reaches top dead center, then internal engine forces go ballistic. The car may make less POWER (because the flame front is trying to push the piston and crankshaft backwards), but internal forces on the rod become overwhelming.</p><p></p><p>So rods and compression aren't related, but they are each a link in the failure chain. Avoiding detonation is difficult with high compression... and when detonation occurs, the rods may be the first things to go.</p><p></p><p>The Coyote does have some interesting advantages that may help tuners avoid detonation, such as the variable cam timing and oil squirters already meantioned in a previous post. Everyone should just be aware that using the ti-VCT to reduce "dynamic compression" is another way to say "reducing the amount of air in the cylinder. This decreases the risk of detonation for sure, but also reduces power significantly when this feature is used.</p></blockquote><p></p>
[QUOTE="mustangc, post: 9565920, member: 87570"] You are mostly correct. What kills rods is force, not necessarly horsepower. High power can damage rods, but overrevving an engine and (probably the biggest risk for the Coyote) preignition are much more common causes for overstressing a rod. If combustion takes place too soon before the piston reaches top dead center, then internal engine forces go ballistic. The car may make less POWER (because the flame front is trying to push the piston and crankshaft backwards), but internal forces on the rod become overwhelming. So rods and compression aren't related, but they are each a link in the failure chain. Avoiding detonation is difficult with high compression... and when detonation occurs, the rods may be the first things to go. The Coyote does have some interesting advantages that may help tuners avoid detonation, such as the variable cam timing and oil squirters already meantioned in a previous post. Everyone should just be aware that using the ti-VCT to reduce "dynamic compression" is another way to say "reducing the amount of air in the cylinder. This decreases the risk of detonation for sure, but also reduces power significantly when this feature is used. [/QUOTE]
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First Look: Whipple 2.3L W140ax for the 2011 5.0L Mustang GT
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