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Main pulley torque capability?

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Old 02-22-2017, 10:32 AM
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Main pulley torque capability?

Hello, has anyone ever looked into how much torque the main engine pulley can withstand without shearing the pins/key/bolts? This is just a curiosity I have at the moment. For instance, for those of you that have installed superchargers on your rx8, did you have to add additional pins/keys between the eccentric shaft and pulleys? Are there any figures available for how much torque the stock eccentric shaft key can handle? Is it even possible to drill/ream and add additional shear pins between the eccentric shaft and main drive pulley mount? Again I'm just curious about this topic and if anyone has ever dealt with it, thank you
Old 02-22-2017, 10:34 AM
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The Renesis is not capable of making enough power to shear anything.
Old 02-22-2017, 10:37 AM
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i have a couple friends with the pettit kit and worked on their cars, you are not gonna damage the ess pulley from a s/c. the renny (even boosted) doesnt have enough tq to pull off your drunken sisters panties (stollen from another member but funny)
Old 02-22-2017, 10:54 AM
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HAHA ok sure I know its a dog! I would think however that in the case of a supercharged system you're going to have SOME HP gains....so slightly higher HP, and slightly higher supercharger resistance would increase stress on the pulley keys to some degree. Anyway, I know its a moot question to ask considering there is not much power....but ultimately my question has to do with what the stock key/pulleys can handle and not whether or not the question is worth asking....
Old 02-22-2017, 10:57 AM
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the only thing the renny is gonna break is apex seals and your wallet
Old 02-22-2017, 11:11 AM
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TX

Originally Posted by 200.mph
the only thing the renny is gonna break is apex seals and your wallet

QFT. The pulley is the least of your worries.
Old 02-22-2017, 12:13 PM
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I am not installing a supercharger. I was just using that as an example to set context for the question.
Old 02-22-2017, 12:46 PM
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maybe its me but i dont get the question. to me it seems like asking how much power can i put to the ground before three piece wheels will fall apart. idk.



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