Feeling like your SkyActiv powered Mazda isn’t getting the “shining” attention it deserves? Maybe you’ve already bought every CorkSport item you can, but you just want more! I can’t blame you; it’s a virus that all car fanatics fight. So here’s fuel for the fire! Introducing the aluminum crank pulley for 2.0L & 2.5L SkyActiv engines!
Manufactured from high-grade 6061-T6 aluminum, this precision-machined crank pulley is sure to give you that extra level of detail you’ve been searching for.
This crank pulley isn’t just for looks, folks; it’s got bite, too! With a 70% weight reduction compared to the OEM component, your engine will rev faster due to the lower moment of inertia of the rotating mass. I can’t guarantee your bum will feel the difference, but your 2.0L will.
You may also wonder: “The OEM component is steel, will the aluminum be strong enough?” Absolutely! The accessory belts put a very small, almost insignificant, amount of force on the pulley. The real concern would be the bolt that holds the pulley on, but we got that covered with our FEA testing (see below) and over a decade of use in the community and our cars.
To be confident in our products, we conduct FEA (Finite Element Analysis) on all applicable components. In this case, the bolt clamping force is holding the pulley on the crank. The crank pulley bolt is an M16x1.5 with a torque spec of 67-80 ft-lb. I used 79 ft-lb, which creates a clamping force of 7557 lbf. The maximum stress is ~12420 psi, which is far below the material yield strength of ~40k psi. So what does this mean to you? You can (but shouldn’t) torque that bolt down to ~250 ft-lb without worrying about your beautiful new pulley being structurally damaged, but you will have to worry about getting that bolt out next time; that’s your problem.
Add some shine to your engine bay and just a little more pep in your step. Enjoy better performance of your SkyActiv Engine with the CorkSport Crankshaft Pulley! Offered in anodized black. Zoom – Zoom!
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Please please please start making these again!
I second that^
I recdnt bought your SRI, and am interested in the aluminum pulley. Do you still sell these? If not, was it because they caused engine issues or because there was not enough demand for them? I had a lightweight pulley for my 2004 Mazda6 V6, and loved how much faster the engine revved with it!
We’ll look into this for you and keep you posted!
Thanks!
I’m interested Also , I have a 2011 Mazda 3 2.5L . Would love to have this item .
I need this corksport. i just got into autocrossing and my car doesnt accelerate fast enough in 2nd gear. im doing okay now but everything helps.
also i wamt to special order the adjustable knob but in black!