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-   -   Main pulley torque capability? (https://www.rx8club.com/series-i-tech-garage-22/main-pulley-torque-capability-264659/)

kevino 02-22-2017 10:32 AM

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

9krpmrx8 02-22-2017 10:34 AM

The Renesis is not capable of making enough power to shear anything.

200.mph 02-22-2017 10:37 AM

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)

kevino 02-22-2017 10:54 AM

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....

200.mph 02-22-2017 10:57 AM

the only thing the renny is gonna break is apex seals and your wallet

9krpmrx8 02-22-2017 11:11 AM


Originally Posted by 200.mph (Post 4806644)
the only thing the renny is gonna break is apex seals and your wallet


QFT. The pulley is the least of your worries.

kevino 02-22-2017 12:13 PM

I am not installing a supercharger. I was just using that as an example to set context for the question.

200.mph 02-22-2017 12:46 PM

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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