Underdrive Harmonic Balancer Question
Thread Starter
Racer
Joined: Apr 2007
Posts: 393
Likes: 0
From: Austin Texas
Underdrive Harmonic Balancer Question
The harmonic balancer on my 2006-C6-A6 has begun to wobble, and I am contemplating replacing it with a Powerbond 25% UNDERDRIVE harmonic balancer.
With the new underdrive harmonic balancer, my alternator will now run slower. Because of this, will my alternator voltage drop and cause problems?
What have you guys experienced?
Thank you for your help.
With the new underdrive harmonic balancer, my alternator will now run slower. Because of this, will my alternator voltage drop and cause problems?
What have you guys experienced?
Thank you for your help.
Race Director
Joined: Aug 2005
Posts: 13,592
Likes: 187
From: Hudson WI
NCM Sinkhole Donor
We make car batteries, I had that concern as well. The voltage was OK at idle with the underdrive pulley, but I was not able to look at the amperage.
If it is a daily driver I am not sure I would do it.
Just my opinion.
If it is a daily driver I am not sure I would do it.
Just my opinion.
Tolero Apto Victum
Joined: Jul 2007
Posts: 9,669
Likes: 37
From: Woodlands TX
OP: I had these item installed when my 07 Vet had the wobbles.
http://store.katechengines.com/bille...sioner-p2.aspx
http://store.katechengines.com/ati-s...ts-v-p230.aspx
The 07 Vet now has over 120,000 miles on it and running strong.
Good luck with your mods!
http://store.katechengines.com/bille...sioner-p2.aspx
http://store.katechengines.com/ati-s...ts-v-p230.aspx
The 07 Vet now has over 120,000 miles on it and running strong.
Good luck with your mods!
Safety Car
Joined: Nov 2007
Posts: 4,537
Likes: 1,403
From: Bethesda MD
With a UD pulley, typically more miles is better. Charging problems can occur at idle, which happens when you are stopped. Lots of miles typically means the car is moving and well into the charging range.
The other thing to think about with a UD pulley and stock idle speed is the A/C. On a hot day in heavy city traffic spent waiting for red lights to change, the A/C can be less than satisfying. Just like the charging issue, the more the car is moving the less you'll notice any difference from stock.
The other thing to think about with a UD pulley and stock idle speed is the A/C. On a hot day in heavy city traffic spent waiting for red lights to change, the A/C can be less than satisfying. Just like the charging issue, the more the car is moving the less you'll notice any difference from stock.
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Race Director
Joined: Dec 2005
Posts: 11,885
Likes: 107
From: God's Country, ID
With a UD pulley, typically more miles is better. Charging problems can occur at idle, which happens when you are stopped. Lots of miles typically means the car is moving and well into the charging range.
The other thing to think about with a UD pulley and stock idle speed is the A/C. On a hot day in heavy city traffic spent waiting for red lights to change, the A/C can be less than satisfying. Just like the charging issue, the more the car is moving the less you'll notice any difference from stock.
The other thing to think about with a UD pulley and stock idle speed is the A/C. On a hot day in heavy city traffic spent waiting for red lights to change, the A/C can be less than satisfying. Just like the charging issue, the more the car is moving the less you'll notice any difference from stock.
I'm unsure if the 25% can be purchase with a stock size A/C pulley? OP can call Byun Speed and they can tell you.
Race Director
Joined: Aug 2005
Posts: 13,592
Likes: 187
From: Hudson WI
NCM Sinkhole Donor
