Pulley kits, any suggestions?
Guest
Posts: n/a
Troy,
Even though you might not notice a difference in idle and smoothness of revs, pulleys are dampened for a reason. Not just for regular people looking for a smooth ride. Over the course of a car's 100,000+(hopefully) lifetime, it puts more vibrational wear and tear on rotating parts, particularly the crank. Here's a good article on it:
http://www.dinanbmw.com/html/danger_...er_pulleys.htm
I'm not saying don't get one, but it's something to be aware of for the tuner looking for great reliability from their car.
7
Even though you might not notice a difference in idle and smoothness of revs, pulleys are dampened for a reason. Not just for regular people looking for a smooth ride. Over the course of a car's 100,000+(hopefully) lifetime, it puts more vibrational wear and tear on rotating parts, particularly the crank. Here's a good article on it:
http://www.dinanbmw.com/html/danger_...er_pulleys.htm
I'm not saying don't get one, but it's something to be aware of for the tuner looking for great reliability from their car.
7
Registered User
Joined: Aug 2003
Posts: 152
You guys need to do more research and get your facts straight. Distinguish between a lightweight pulley v. an underdrive and lightweight pulley, learn whether Subaru's pulley has a harmonic balancer as part of the pulley, find out whether this mod alone would void your warranty.
I have yet to come across anything that is supported by verifiable evidence that a lightweight pulley will cause damage to an engine. The only downside that I have learned is that the car may feel slightly less smooth when idling but that most drivers would not notice it. The upside is increased acceleration since their is less rotational mass that the engine must spin when turning over. This improvement is particularly pronounced when leaving from a stop. I have heard one person analogizing the performance gain someone might notice if they removed 65lbs of weight from the car. If this is true, which I am not alleging, then it can only be true for acceleration purposes and not true for handling purposes.
I have yet to come across anything that is supported by verifiable evidence that a lightweight pulley will cause damage to an engine. The only downside that I have learned is that the car may feel slightly less smooth when idling but that most drivers would not notice it. The upside is increased acceleration since their is less rotational mass that the engine must spin when turning over. This improvement is particularly pronounced when leaving from a stop. I have heard one person analogizing the performance gain someone might notice if they removed 65lbs of weight from the car. If this is true, which I am not alleging, then it can only be true for acceleration purposes and not true for handling purposes.
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