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Underdrive Pulleys

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Old Jul 9, 2007 | 01:11 PM
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spensley's Avatar
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Default Underdrive Pulleys

I've used the search button, and even done some reading!!!
I'm planning on having the Evosport underdrive pulleys fitted to my Limited coupe.
I was wondering if anyone has had any problems while fitting them, or after fitting them? (definite problems, not just guessing the pulleys are the problem)
Do the pulleys come with an instruction sheet on mounting etc?
If anybody could post it that would be awesome.
TIA.
 
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Old Jul 9, 2007 | 04:13 PM
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Default Re: Underdrive Pulleys

The only problem that I've heard of , was that the crankshaft pulley is a real ***** to remove, it must be torqued to 300 ft/lbs or something stupid like that. Are you buying all the underdrive pulleys or just the crankshaft?
 
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Old Jul 9, 2007 | 05:40 PM
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Default Re: Underdrive Pulleys

I was going to leave the crank pulley as is.
I was going to buy this kit...

http://www.nyxracing.com/evosport-underdrive-pulley-performance-mercedes-9804-p-13695.html
 

Last edited by spensley; Jul 9, 2007 at 05:46 PM.
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Old Jul 11, 2007 | 06:10 AM
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Default Re: Underdrive Pulleys

Hmmm... I got this off the web page:

Engineered not only to be the best pulley kits on the market, but to provide the best compromise between performance and reliability for your BMW!
You sure you wanna buy that kit?
 
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Old Jul 11, 2007 | 12:14 PM
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Default Re: Underdrive Pulleys

Yeah, I know... I saw that too.
 
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Old Jul 11, 2007 | 01:11 PM
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Default Re: Underdrive Pulleys

I don't think it's worth all the effort to just buy the accessory pulleys if your not gonna install the crank pulley. I think the entire pulley kit will make an extra Whopping 5-8 hp.
 

Last edited by Maxwell; Jul 11, 2007 at 04:21 PM.
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Old Jul 11, 2007 | 02:05 PM
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Default Re: Underdrive Pulleys

That's the impression I was under.
For twice the price I can get a lot more power with the ECU programming.
I was just curious - you never know when you'll have too much money!!!
 
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Old Jul 11, 2007 | 04:24 PM
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Default Re: Underdrive Pulleys

correct me if I'm wrong but isn't the crank pulley priced around a cool $900??? definite waste of hard earned cash IMO!!!
 
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Old Jul 11, 2007 | 05:46 PM
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Default Re: Underdrive Pulleys

I don't know about the crank pulley - it's not in the EVO' underdrive pulley kit, nor the ECU programming.
 
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