ECS light weight pulley

onefastman · 11-25-2010, 12:19 AM

Has anyone tried this?

http://www.ecstuning.com/BMW-E82-135...All/ES2063858/

Only .5lbs

Take a look at the dyno graph and how horribly unsmoothe it is

benton0311 · 11-25-2010, 06:43 AM

The stock pulley is weighted for a reason - it acts as a vibration damper. Look up lightweight pulleys and you'll probably find some info on it on here and through a general google search.

Basically you're risking engine damage over time with a lightweight pulley.

Underdrive pulleys that are weighted are a different story. They basically maintain adequate mass but are smaller in size which turns the accessories slower reducing parasitic loss but decreasing their efficiency.

JoshM813 · 11-25-2010, 06:56 AM

Do not get any lightweight pulleys! My NST pulley shook mine and a friend's car's crank bolt loose!!!

dzenno · 11-25-2010, 06:59 AM

Bad

vasillalov · 11-25-2010, 08:12 AM

This comes up every 1-2 months. Do NOT purchase lightweight pulleys. The crank pulley is actually called vibration dampener and it is there for a very specific reason.

onefastman · 11-25-2010, 08:15 AM

I am aware of all of this (aside from any actial evidence) but was noting how light the ECS pulley is

8 ounces versus 40 ounces (NST) versus 110 ounces (OEM) so the ecs is a 94% weight reduction!!!!!!!

cn555ic · 11-25-2010, 08:24 AM

Bad idea. Steer clear of this mod for the N54

JoshM813 · 11-25-2010, 09:43 AM

Honestly wouldnt see a problem for maybe 3 pulls at the track...if u install at the track or have it towed there lol

forza1976 · 11-25-2010, 10:21 AM

Good god. So much for searching these days??? This topic has been covered!

Happy turkey day btw.

11-25-2010, 12:19 AM	#1
onefastman Major General 160 Rep 5,689 Posts Drives: 2009 135i 2011 e92m dct Join Date: Sep 2009 Location: Earth iTrader: (15)	ECS light weight pulley Has anyone tried this? http://www.ecstuning.com/BMW-E82-135...All/ES2063858/ Only .5lbs Take a look at the dyno graph and how horribly unsmoothe it is __________________ Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(1addicts.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
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11-25-2010, 06:43 AM	#2
benton0311 Lance Corporal 19 Rep 128 Posts Drives: 08 335i, Graphite Join Date: Nov 2007 Location: Maryland iTrader: (1)	The stock pulley is weighted for a reason - it acts as a vibration damper. Look up lightweight pulleys and you'll probably find some info on it on here and through a general google search. Basically you're risking engine damage over time with a lightweight pulley. Underdrive pulleys that are weighted are a different story. They basically maintain adequate mass but are smaller in size which turns the accessories slower reducing parasitic loss but decreasing their efficiency.
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11-25-2010, 06:56 AM	#3
JoshM813 First Lieutenant 9 Rep 363 Posts Drives: E55 AMG Join Date: Jan 2010 Location: Tampa, FL iTrader: (1)	Do not get any lightweight pulleys! My NST pulley shook mine and a friend's car's crank bolt loose!!! __________________ Current: 2005 Mercedes E55 AMG My Mods: Eurocharged Tune, 180mm Pulley, Heat Exchanger and H/E pump Previous: 2007 BMW 335i
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11-25-2010, 06:59 AM	#4
dzenno Banned 275 Rep 5,876 Posts Drives: Join Date: Feb 2006 iTrader: (1)	Bad
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11-25-2010, 08:12 AM	#5
vasillalov Mad Linux Guru On The Loose 1165 Rep 5,447 Posts Drives: 2008 335i Sedan, 2023 M3 Join Date: Aug 2009 Location: Chicago, IL iTrader: (5) Garage List 2023 BMW M3 [0.00] 2008 335i E90 [8.00]	This comes up every 1-2 months. Do NOT purchase lightweight pulleys. The crank pulley is actually called vibration dampener and it is there for a very specific reason. __________________
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11-25-2010, 08:15 AM	#6
onefastman Major General 160 Rep 5,689 Posts Drives: 2009 135i 2011 e92m dct Join Date: Sep 2009 Location: Earth iTrader: (15)	I am aware of all of this (aside from any actial evidence) but was noting how light the ECS pulley is 8 ounces versus 40 ounces (NST) versus 110 ounces (OEM) so the ecs is a 94% weight reduction!!!!!!! __________________ Legal Disclaimer: Anything I or anyone else says about my vehicle on this website(1addicts.com or any affiliated or nonaffiliated sites), pertaining to modifications, is only to gain acceptance from my/our peers, and does not actually represent anything actually existing on my car, and thus, cannot be held against me in any issues, i.e. warranty claims, that may arise.
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11-25-2010, 08:24 AM	#7
cn555ic 452 Rep 18,331 Posts Drives: 335i Join Date: Jun 2007 Location: US iTrader: (6)	Bad idea. Steer clear of this mod for the N54
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11-25-2010, 09:43 AM	#8
JoshM813 First Lieutenant 9 Rep 363 Posts Drives: E55 AMG Join Date: Jan 2010 Location: Tampa, FL iTrader: (1)	Honestly wouldnt see a problem for maybe 3 pulls at the track...if u install at the track or have it towed there lol __________________ Current: 2005 Mercedes E55 AMG My Mods: Eurocharged Tune, 180mm Pulley, Heat Exchanger and H/E pump Previous: 2007 BMW 335i
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11-25-2010, 10:21 AM	#9
forza1976 Major General 3494 Rep 6,613 Posts Drives: BMW Join Date: Aug 2007 Location: 49456 iTrader: (13) Garage List 2022 BMW M3X [9.50]	Good god. So much for searching these days??? This topic has been covered! Happy turkey day btw.
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