MRZ or other Lightweight Pulleys - Performance Forum

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MRZ or other Lightweight Pulleys
Thursday, June 23, 2016 11:17 AM
Does anyone know where i can obtain lightweight STOCK size pulleys for the Ecotec? I see plenty of pics online of the MRZ pulleys, but i cannot seem to find them or the site online anywhere. I only focused on those because i heard they reworked them to resolve the leak issues that tend to come with along with aftermarket cranks..any help would be appreciated. thanks in advance.

Re: MRZ or other Lightweight Pulleys
Thursday, June 23, 2016 4:24 PM
Contact Michael Davis. He might have one or can get you one.



FU Tuning



Re: MRZ or other Lightweight Pulleys
Monday, June 27, 2016 10:10 AM
Mike won't make them.

Supposedly the oil pump gears are easy to break when you run an aluminum crank pulley, that's why you don't see many.



"In Oldskool we trust"
Re: MRZ or other Lightweight Pulleys
Monday, June 27, 2016 2:54 PM
Y3llowCav wrote:

Mike won't make them.

Supposedly the oil pump gears are easy to break when you run an aluminum crank pulley, that's why you don't see many.


Not true he will, no one wants to pay the price.



FU Tuning



Re: MRZ or other Lightweight Pulleys
Tuesday, October 18, 2016 12:04 PM
Both of you are right.

Also, I never heard a peep from Darrel.





Re: MRZ or other Lightweight Pulleys
Wednesday, March 01, 2017 5:08 PM
Interested as well.. been looking everywhere and it seems there aren't any options for a pulley upgrade any longer unfortunately..
Re: MRZ or other Lightweight Pulleys
Friday, March 03, 2017 9:14 AM
I have a used RSM crank pulley I might part with.
Re: MRZ or other Lightweight Pulleys
Friday, March 03, 2017 12:17 PM
I still make a few here or there, custom designed per application. Currently in the $350-400 range. One offs are pricey. I prefer an all steel design or a hybrid design. Steel snout, aluminum pulley.






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