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2011-2014 Mustangs
Power-Adders
paxton 2200sl
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<blockquote data-quote="CPRsm" data-source="post: 14846854" data-attributes="member: 81705"><p>Whaaaaa? Rods are stronger in compression. Tensile strength is where the rods have problems. Specifically on the exhuast stroke where the valve opens and pushes out the exhuast. W scavenging effects it tries to stretch the rod even harder. Back pressure created from the turbo puts some resistence against the piston as it's slamming to a stop at TDC. </p><p>Now to your point, the power coming in early can create cylinder pressure problems w a poor tune. But that cylinder pressure is what causes torque. As rpm increases the cylinder pressure is lower and window for knock also decreases. I think that's what you were meaning? </p><p></p><p>That was one of the reasons we had to slow our spool down. Full boost by 3200. Problematic for tires lol. But you could also lean into it a little on the freeway and see a few psi. I could see someone surging a turbo to death or knocking the rods out of an engine at 2300 because it was seeing too much boost and load w no rpm change.</p></blockquote><p></p>
[QUOTE="CPRsm, post: 14846854, member: 81705"] Whaaaaa? Rods are stronger in compression. Tensile strength is where the rods have problems. Specifically on the exhuast stroke where the valve opens and pushes out the exhuast. W scavenging effects it tries to stretch the rod even harder. Back pressure created from the turbo puts some resistence against the piston as it's slamming to a stop at TDC. Now to your point, the power coming in early can create cylinder pressure problems w a poor tune. But that cylinder pressure is what causes torque. As rpm increases the cylinder pressure is lower and window for knock also decreases. I think that's what you were meaning? That was one of the reasons we had to slow our spool down. Full boost by 3200. Problematic for tires lol. But you could also lean into it a little on the freeway and see a few psi. I could see someone surging a turbo to death or knocking the rods out of an engine at 2300 because it was seeing too much boost and load w no rpm change. [/QUOTE]
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