new ** MRZ Performance UDP and Lightweight Crank Pulleys for the 2.2/2.4 NA Ecotec's
09-04-2008, 06:26 PM
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new ** MRZ Performance UDP and Lightweight Crank Pulleys for the 2.2/2.4 NA Ecotec's
MRZ Billet Crank Pulleys for the NA ECOTEC's 2.2 and 2.4 are ready! LE5 L61 
We are proud to bring you another high quality performance product for the Ecotec
Link to MRZ Performance Underdrive Crank Pulley - UDP : http://mrzperformance.vstore.ca/prod...roducts_id/144
OEM WEIGHT: 1650 Grams OEM DIAMETER: 6.500"
MRZ WEIGHT : 590 Grams MRZ UDP DIAMETER 5.875"
3 X lighter than OEM ! Now that's a radical drop on the rotational mass of your crankshaft meaning your engine will get to revs faster.
MRZ billet aluminum UDP versus OEM cast iron pulley:
Link to MRZ Performance OEM size Lightweight Crank Pulley: http://mrzperformance.vstore.ca/prod...roducts_id/143
OEM WEIGHT: 1650 Grams
MRZ WEIGHT : 700 Grams
2.5 lighter than OEM !
Satisfaction guaranteed like on all MRZ Performance products!
Just contact me if you have any questions
Thanks for looking! 
We are proud to bring you another high quality performance product for the Ecotec
Link to MRZ Performance Underdrive Crank Pulley - UDP : http://mrzperformance.vstore.ca/prod...roducts_id/144
OEM WEIGHT: 1650 Grams OEM DIAMETER: 6.500"
MRZ WEIGHT : 590 Grams MRZ UDP DIAMETER 5.875"
3 X lighter than OEM ! Now that's a radical drop on the rotational mass of your crankshaft meaning your engine will get to revs faster.
MRZ billet aluminum UDP versus OEM cast iron pulley:
Link to MRZ Performance OEM size Lightweight Crank Pulley: http://mrzperformance.vstore.ca/prod...roducts_id/143
OEM WEIGHT: 1650 Grams
MRZ WEIGHT : 700 Grams
2.5 lighter than OEM !
Satisfaction guaranteed like on all MRZ Performance products!
Just contact me if you have any questions
Thanks for looking!
09-05-2008, 08:01 AM
#7
underdrive is a lighter smaller pulley, as in smaller than stock, needs new belt, add more strain on electrical system if you ue more than stock, the lightweight one is a stock sized one, wheighs less, but stays the same size as stock, only thing is that the underdrive is lighter frombeing smaller, so it depends on ur prefrence really, i know i wanna get the stock sized one, i can dyno to show results, depends what MRZ says, if they are willing to strike a deal, i can take it to dyno before and after
09-05-2008, 08:04 AM
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underdrive is a lighter smaller pulley, as in smaller than stock, needs new belt, add more strain on electrical system if you ue more than stock, the lightweight one is a stock sized one, wheighs less, but stays the same size as stock, only thing is that the underdrive is lighter frombeing smaller, so it depends on ur prefrence really, i know i wanna get the stock sized one, i can dyno to show results, depends what MRZ says, if they are willing to strike a deal, i can take it to dyno before and after
09-05-2008, 08:08 AM
#9
i sent MRZ a PM, if they wanna send me one i am willing to dyno in the morning before i install it, and than come back in a hour or 2 and dyno right afte, i mean i sent them a PM i dont think i was clear enough, i can take vids of the dyno too 
aswell as make a how to for the install, this is assuming MRZ will work for me, MRZ PM me back, i am willing to dyno at my expensense if you send me one for my 2.2 im not saying throw me a free one, maybe just throw me a very generous offer
aswell as make a how to for the install, this is assuming MRZ will work for me, MRZ PM me back, i am willing to dyno at my expensense if you send me one for my 2.2 im not saying throw me a free one, maybe just throw me a very generous offer
09-05-2008, 08:44 AM
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i sent MRZ a PM, if they wanna send me one i am willing to dyno in the morning before i install it, and than come back in a hour or 2 and dyno right afte, i mean i sent them a PM i dont think i was clear enough, i can take vids of the dyno too aswell as make a how to for the install, this is assuming MRZ will work for me, MRZ PM me back, i am willing to dyno at my expensense if you send me one for my 2.2 im not saying throw me a free one, maybe just throw me a very generous offer
aswell as make a how to for the install, this is assuming MRZ will work for me, MRZ PM me back, i am willing to dyno at my expensense if you send me one for my 2.2 im not saying throw me a free one, maybe just throw me a very generous offerso any news? anyone tried this yet?
09-05-2008, 10:17 AM
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i sent MRZ a PM, if they wanna send me one i am willing to dyno in the morning before i install it, and than come back in a hour or 2 and dyno right afte, i mean i sent them a PM i dont think i was clear enough, i can take vids of the dyno too aswell as make a how to for the install, this is assuming MRZ will work for me, MRZ PM me back, i am willing to dyno at my expensense if you send me one for my 2.2 im not saying throw me a free one, maybe just throw me a very generous offer
aswell as make a how to for the install, this is assuming MRZ will work for me, MRZ PM me back, i am willing to dyno at my expensense if you send me one for my 2.2 im not saying throw me a free one, maybe just throw me a very generous offer we are looking forward to test it with you 
FOR THE UDP version ONLY --- The belt that is needed is exactly 1.0 inch shorter than the OEM belt
You can go to any good part store and ask for a belt that is about 1.0 inch shorter than the one for your exact application. For example, a belt number of 050400 will have a length of 40.0” so you should get a belt number a close as possible to 050390 witch have a length of 39.0”. Most 2.2/2.4 Ecotec use a 050400 so you will need a 050390 belt.
Last edited by MRZ - RedGTZ; 09-05-2008 at 10:26 AM. Reason: Automerged Doublepost
09-05-2008, 10:35 AM
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$174.95
the trigger wheel for the sensor is not located on the crank pulley so there is no influence on it.
We'll do a group buy for all of our Ecotec pulleys later on if we have good interest in them
the trigger wheel for the sensor is not located on the crank pulley so there is no influence on it.
We'll do a group buy for all of our Ecotec pulleys later on if we have good interest in them
Last edited by MRZ - RedGTZ; 09-05-2008 at 10:36 AM. Reason: Automerged Doublepost
09-05-2008, 10:40 AM
#23
I just PM'd you back we are looking forward to test it with you
FOR THE UDP version ONLY --- The belt that is needed is exactly 1.0 inch shorter than the OEM belt
You can go to any good part store and ask for a belt that is about 1.0 inch shorter than the one for your exact application. For example, a belt number of 050400 will have a length of 40.0” so you should get a belt number a close as possible to 050390 witch have a length of 39.0”. Most 2.2/2.4 Ecotec use a 050400 so you will need a 050390 belt.
we are looking forward to test it with you FOR THE UDP version ONLY --- The belt that is needed is exactly 1.0 inch shorter than the OEM belt
You can go to any good part store and ask for a belt that is about 1.0 inch shorter than the one for your exact application. For example, a belt number of 050400 will have a length of 40.0” so you should get a belt number a close as possible to 050390 witch have a length of 39.0”. Most 2.2/2.4 Ecotec use a 050400 so you will need a 050390 belt.
also i used to work for a autoparts store and yes thats how the part number go, alot of times when u go to stores they dpot have alot listed for the cobalt, spark plugs, belt, sensors, etc, i had to look under a cavi, same engine, lol...and what i have seen people do is take a rope and run it thru the pulleys, than they tie it off so they know how long they need the new belt to be, go to a autoparts store and say i need a belt this size
09-05-2008, 10:45 AM
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u haz a PM
also i used to work for a autoparts store and yes thats how the part number go, alot of times when u go to stores they dpot have alot listed for the cobalt, spark plugs, belt, sensors, etc, i had to look under a cavi, same engine, lol...and what i have seen people do is take a rope and run it thru the pulleys, than they tie it off so they know how long they need the new belt to be, go to a autoparts store and say i need a belt this size
also i used to work for a autoparts store and yes thats how the part number go, alot of times when u go to stores they dpot have alot listed for the cobalt, spark plugs, belt, sensors, etc, i had to look under a cavi, same engine, lol...and what i have seen people do is take a rope and run it thru the pulleys, than they tie it off so they know how long they need the new belt to be, go to a autoparts store and say i need a belt this size
that would be easier for you guys