2.2L L61 Performance Tech 16 valve 145 hp EcoTec with 155 lb-ft of torque

new ** MRZ Performance UDP and Lightweight Crank Pulleys for the 2.2/2.4 NA Ecotec's

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Old 09-04-2008, 06:24 PM
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Thumbs up 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!
Old 09-04-2008, 06:26 PM
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I was just wondering if you guys have dyno'd these to find the results?
Old 09-04-2008, 06:28 PM
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Excellent!

When will you be coming out with an alternator pulley to go with it?

I can't buy this right now, but this is definately on my list.
Old 09-04-2008, 06:29 PM
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interesting... now do they actually make a difference
Old 09-04-2008, 06:33 PM
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Originally Posted by camarokiller
I was just wondering if you guys have dyno'd these to find the results?
no now but if someone is interested in testing we can help

Originally Posted by XM15
Excellent!

When will you be coming out with an alternator pulley to go with it?

I can't buy this right now, but this is definately on my list.
Alternator pulley are soon to follow

Originally Posted by silentd
interesting... now do they actually make a difference
They do we'll get dyno # to proove it

Last edited by MRZ - RedGTZ; 09-04-2008 at 06:33 PM. Reason: Automerged Doublepost
Old 09-04-2008, 06:34 PM
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im gonna be supercharged soon i have a 2.4...will this work when im boosted or just for n/a cars only?
Old 09-04-2008, 06:39 PM
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Arrow

Originally Posted by Jimmys2007CobaltSS/C
im gonna be supercharged soon i have a 2.4...will this work when im boosted or just for n/a cars only?
This is why we have the OEM size pulley, it is the same size as the LSJ pulley but with 5 ribs for those who run superchargers

I would not recommend goind with the samller version if you want to upgrade your powertrain with a SC
Old 09-04-2008, 06:50 PM
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so these are the same size as the OEM pulleys? and i would b interested in doin a dyno.
Old 09-04-2008, 06:58 PM
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so whats the deal with the whole harmonic balancer issue? no one has ever been able to provide a solid answer on this.
Old 09-04-2008, 07:43 PM
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what will this really do for the 2.2/2.4 motor...quite curious
Old 09-04-2008, 08:03 PM
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Originally Posted by MRZ - RedGTZ
This is why we have the OEM size pulley, it is the same size as the LSJ pulley but with 5 ribs for those who run superchargers

I would not recommend goind with the samller version if you want to upgrade your powertrain with a SC
Does the same idea apply for a turboed 2.2?
Old 09-04-2008, 08:04 PM
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Originally Posted by MRZ - RedGTZ
Alternator pulley are soon to follow
I will buy them when they become a set. How bout AC Compressor pully? If so you have a 100% buy from me.
Originally Posted by IonNinja
so whats the deal with the whole harmonic balancer issue? no one has ever been able to provide a solid answer on this.
Could you shed more light, what "issue" are you refering to?


Edit, I want the underdrive set: http://mrzperformance.vstore.ca/prod...roducts_id/144
What size belt do you recomend with them?
Old 09-04-2008, 08:09 PM
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Originally Posted by tru2nrtt777
I will buy them when they become a set. How bout AC Compressor pully? If so you have a 100% buy from me.
Could you shed more light, what "issue" are you refering to?
The stock pulley's are harmonically balanced. The rotation of the crankshaft creates vibrations and if the aftermarket pulley isnt balanced the same, then there will be added stress on the engine causing problems later on.
Old 09-04-2008, 08:14 PM
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Ahh, true, I understand why he called it an issue but his question threw me off.
Old 09-04-2008, 08:49 PM
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Damn those look sexy....
Old 09-04-2008, 11:13 PM
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How much of a difference would there be between in power would there be between the stock sized one and the underdrive one? Also how much would the underdrive one affect electrical stuff like lights and stereo and stuff? And finally does the underdrive pulley come with a smaller belt or do you have to get that seperately? No matter what i will be ordering one of these soon just gotta figure out which one.
Old 09-05-2008, 12:11 AM
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Originally Posted by XM15
Excellent!

When will you be coming out with an alternator pulley to go with it?
I can't buy this right now, but this is definately on my list.
Same here
I would want to do both the crank and Alt at the same time I don't really want to take it apart twice.
Tell us when the ALT's are ready will ya
Old 09-05-2008, 02:27 AM
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sent u a PM, i am interested in it, id be more than glad to test it out for you, i have a local dyno i go to all the time, they all all my dynos in their system, so i can show before and after's...

Last edited by Jn2; 09-05-2008 at 06:58 AM.
Old 09-05-2008, 11:13 AM
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i will be testing both the underdrive and the lightweight version of these,
MRZ is sending me both to test out, and you can bet ima let you guys know how each one performs, expect to see pics, vid, and dyno sheets
Old 09-05-2008, 11:57 AM
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I still want to know if it affects the electrical components. stereo, lights. etc. Im not putting a sound system in my car, so i wont have to worry about that.

Let us know, do a voltage test, before and after. and let us know if a new belt is needed.
Old 09-05-2008, 12:04 PM
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Originally Posted by CobaltLT
Does the same idea apply for a turboed 2.2?
No... Supercharged must stay as OEm diameter to avoid going smaller to keep the same boost level. You can put the UDP on a turbo and get great gains
Old 09-05-2008, 12:15 PM
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Sweet...now I know which one i'll be getting.
Old 09-05-2008, 12:36 PM
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Originally Posted by Borderlin3
I still want to know if it affects the electrical components. stereo, lights. etc. Im not putting a sound system in my car, so i wont have to worry about that.

Let us know, do a voltage test, before and after. and let us know if a new belt is needed.
hmm, i dont have audio, well not alot, i have a kenwood deck with kenwood door speakers, i could run the underdrive for a day or so to see how it affects lights and stereo,
Old 09-05-2008, 01:31 PM
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Originally Posted by Borderlin3
I still want to know if it affects the electrical components. stereo, lights. etc. Im not putting a sound system in my car, so i wont have to worry about that.

Let us know, do a voltage test, before and after. and let us know if a new belt is needed.
If you choose the Lightweight version, there is absolutely no problem eiter if you have big stereo or stock

If you choose the UDP version:

- If you car is stock on the electrical side or have a small sound system installed, there will be no problems with the UDP

- If you have big sound system or other things that takes a lot of power you might experience a power drop...

Originally Posted by BlackLS
How much of a difference would there be between in power would there be between the stock sized one and the underdrive one? Dyno on the way Also how much would the underdrive one affect electrical stuff like lights and stereo and stuff? check previous post And finally does the underdrive pulley come with a smaller belt or do you have to get that seperately? Can be sold with or without the belt No matter what i will be ordering one of these soon just gotta figure out which one.
anwsers in bold characters

Last edited by MRZ - RedGTZ; 09-05-2008 at 01:31 PM. Reason: Automerged Doublepost
Old 09-05-2008, 01:58 PM
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i changed my sig, fully functional ur side links to ur site, TTr links to TTR


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