Lightweight pulleys...

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Aug 25, 2006 | 08:01 AM

#11

stphotographer

Joined: Oct 2002

Posts: 1,527

Likes: 1

From: Los Angeles

Quote:

Originally Posted by Nobody,Aug 24 2006, 11:31 PM

They were the pulleys I bought off of EMC2. I notified him when the first one went....can't remember which pulley it was, but one day I noticed all kinds of powder all over my engine bay. Turned out to be that the bearing loosened up a bit from the pulley it was pressed into and the pulley was grinding up against whatever it was mounted to.

Then recently Asura and I discovered that the idler pulley was basically doing the same thing. Now I need a stock idler pulley washer so I can put my stock one back on. Anyone got one?

I also had the EMC2 pulleys and the same thing happened to me! The pressed bearing failed on my belt tensioner pulley. I've since removed them all except for the water pump pulley which is just a solid piece.

Aug 25, 2006 | 10:01 AM

#12

Stratocaster

Joined: Dec 2001

Posts: 11,399

Likes: 19

OK, that makes sence. The initial design from EMC2, had a few minor design flaws. First the tentioner pulley was cut in such a way that it only installed backwards. That is will the bearing seat facing the front of the car. So if the bearing loosened up, it could walk off the motor. Second, his initial run had percision bearing and not high speed sealed bearing. That meant the as the bearing ran, it overheated and then it could fail.

Aug 25, 2006 | 04:11 PM

#13

Tyraid2K

Registered User

Joined: Apr 2005

Posts: 2,454

Likes: 0

From: Boise, Idaho

Quote:

Originally Posted by wildcardtrd,Aug 24 2006, 09:45 AM

throw in proautosports lightweight crank pulley, and you will notice an increase in throttle response, but not as drastic as a lightweight flywheel.

DO NOT DO THIS!!!

Our crank pulley is a harmonic balancer, changing it is like strapping a time bomb to your motor.

Aug 26, 2006 | 07:22 AM

#14

wildcardtrd

Registered User

Joined: Nov 2004

Posts: 4,287

Likes: 1

From: UCF Knights!

Quote:

Originally Posted by Tyraid2K,Aug 25 2006, 08:11 PM

DO NOT DO THIS!!!

Our crank pulley is a harmonic balancer, changing it is like strapping a time bomb to your motor.

Do you have proof of this? The Pro autosports guys have been running them on at least 3 of their s2000's that I know of for over 70,000 miles apiece. They are cosistently going over their motors with a fine tooth comb, and have yet to discover any sign of additional wear.

...Most inline engines do not need a harmonic balancer...and the S2000 crank is supported by 5 bearings, on top of being forged...