Underdrive Pulley
09-10-2008, 03:12 PM
#11
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09-10-2008, 03:31 PM
#13
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OEM WEIGHT: 1650 Grams OEM DIAMETER: 6.500"
MRZ WEIGHT : 590 Grams MRZ UDP DIAMETER 5.875"
MRZ WEIGHT : 590 Grams MRZ UDP DIAMETER 5.875"
Let us know if you see a difference!!
09-10-2008, 03:34 PM
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oh and when you keep the normal opperating voltage in a car it helps better with ignition and sending pulses for fuel system etc...
Last edited by o3nisoaso3; 09-10-2008 at 03:34 PM. Reason: Automerged Doublepost
09-10-2008, 03:41 PM
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Yea...that's true...but I wonder how much the alternator is actually affected.
09-10-2008, 05:04 PM
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09-10-2008, 08:37 PM
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09-10-2008, 08:45 PM
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If you ordered the light weight one that maintains the original OEM size, all accessories will work fine, alternator will work just as before and you will notice a slight difference in acceleration. I purchased one about five months ago, not from MRZ. It worked great, however it must not have been the correct diameter or just slightly off, not sure which, I just know the one edge was worn away and it caused a slow oil leak. I took it off and put my original back on (Oil leak stopped) and boy could I tell a difference. Now, it almost seems heavier when accelerating, I plan on purchasing a new one from MRZ soon.
09-10-2008, 08:59 PM
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So are the ones for the 2.2 and 2.4, I got ahead of myself before not realizing this was a thread for 2.2, but hey a Cobalts a Cobalt right. Here, directly from MRZ's site:
"Here they are, the new MRZ Performance Lightweight Crank Pulleys for the 2.2 and 2.4 NA Ecotec's! Same diameter as OEM, but 2.5 times lighter than the OEM cast iron GM pulley!"
"Here they are, the new MRZ Performance Lightweight Crank Pulleys for the 2.2 and 2.4 NA Ecotec's! Same diameter as OEM, but 2.5 times lighter than the OEM cast iron GM pulley!"
09-10-2008, 09:00 PM
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09-10-2008, 09:00 PM
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So are the ones for the 2.2 and 2.4, I got ahead of myself before not realizing this was a thread for 2.2, but hey a Cobalts a Cobalt right. Here, directly from MRZ's site:
"Here they are, the new MRZ Performance Lightweight Crank Pulleys for the 2.2 and 2.4 NA Ecotec's! Same diameter as OEM, but 2.5 times lighter than the OEM cast iron GM pulley!"
"Here they are, the new MRZ Performance Lightweight Crank Pulleys for the 2.2 and 2.4 NA Ecotec's! Same diameter as OEM, but 2.5 times lighter than the OEM cast iron GM pulley!"
