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Joined: Feb 2003
Posts: 117
CEG\'er
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CEG\'er
Joined: Feb 2003
Posts: 117 |
96BlackSE,
OK - I'm convinced that YOU are convinced that just because the pulley is underdriven - the losses are less.
But that is NOT true.
Think about it. If the battery is fully charged, the alternator will NOT draw a load (or take HP to turn).
Even if the alternator is slowed down (underdriven by using a larger pulley), the load on it is stil determined by the voltage regulator.
Dead battery = large draw & load
Full battery = no draw
Underdriving a coolant pump may save a little power at first, but I'll take all the sustained cool water I can get to my engine.
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Joined: Sep 2000
Posts: 9,602
Hard-core CEG'er
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Hard-core CEG'er
Joined: Sep 2000
Posts: 9,602 |
Originally posted by 99fordsvt:
1. The alternator only draws as much as the regulator tells it to
If the battery is fully charged, the alternator will NOT draw a load (or take HP to turn).
2. based on the state of charge of the battery.
3. Seems this is a nice machined part - but don't buy it thinking it will help performance.
1. The regulator regulates the voltage. (I.E. Voltage Regulator) Not the amperage draw!
2. The car most certainly DOES run off the alternator.
Only in times of peak load where the alternator can not support the amperage demand does the battery supply it's reserve power to the car.
The battery has 2 functions: It's main function is to start the engine & it's secondary function is as backup reserve for when demand levels exceed alternator output.
Common times where this can occur is at idle with accessories & lights running and definitely if one has a high wattage sound system.
For Reference - The alternator is rated at roughly 4000-5000 rpm (engine speed)
It is not a linear curve either. It starts out at about half rating at 1000rpm and arcs up to it max rpm (normally tested to the equivalent of 6000-7000 rpm engine speed)
For instance our alternator. (a rough example but close enough for a reference)
1000rpm = 60 amps
2000rpm = 75 amps
3000rpm = 95 amps
4000rpm = 125 amps
5000rpm = 135 amps
6000rpm = 140 amps
7000rpm = 145 amps
Now figure any underdriving would directly lower the max amperage output at each rpm point by the % amount compared against the curve slope.
3. Since the alternator is rpm dependant slowing it down will create less drag on the FEAD system. Are we talking bunches of HP/TQ. Heck no.
Probably not even an amount big enough to ever be verified.
However you have to think about the fact it is slowing the alternator down as rpm passes 5k, 6k, 7k.
This will aid in longevity of the alternator for those people that drive their car like it was designed to be driven. The fact it may free up a little parasitic drag is just a bonus.
As I have said before I think this is definitely a good mod for anyone running a stock sized battery, no electric waterpump, or no major sound system. (personally I've not any problem with it & my dyna-batt though)
2000 SVT #674
13.47 @ 102 - All Motor!
It was not broke; Yet I fixed it anyway.
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Joined: Mar 2001
Posts: 1,279
Hard-core CEG\'er
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Hard-core CEG\'er
Joined: Mar 2001
Posts: 1,279 |
Anyone with a large sound system, may want to think twice about the ALT pulley. Slowing it down will effect idle amperage output. If your lights dim now at idle, they certainly wont get better. Just food for thought...
They do look very good though
Previous Owner of 00 SVT Contour #1077/2150 
95 Contour SE '01 3L 
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Joined: Aug 2002
Posts: 1,210
Hard-core CEG\'er
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OP
Hard-core CEG\'er
Joined: Aug 2002
Posts: 1,210 |
All the packages have been sent.(since my internet was acting up yesterday) Let me know when you guys receive them I will find out the belt size ASAP! Thanks, Nima
3.0 14.392@97.237 2.302 60ft
OEM 4-bolt LCA's $105 each
Watch me go
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Joined: May 2000
Posts: 1,359
Webmaster
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Webmaster
Joined: May 2000
Posts: 1,359 |
My P/S pulley showed up today! Yay!
My wife says it looks awesome!
-Lance
Lance Kinley
CEG Webmaster
95 SE, "Cassandra"
10 years!
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Joined: Aug 2002
Posts: 31
New CEG\'er
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New CEG\'er
Joined: Aug 2002
Posts: 31 |
Hey both of my pulleys showed up today and they look like top quality work was done. Hey thanks for everything you done for us. And I will be sending you some money through paypal i just dont have paypal but my girlfrined dad does and im going to send it through him i hope. But i get there one way or another. Like i said before thanks for everything they look awesome. 
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Joined: Aug 2002
Posts: 1,210
Hard-core CEG\'er
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Hard-core CEG\'er
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I am glad they showed up  I couldn't get around to install them this weekend on my car since I was real busy with work Did you guys get charged for customs at all? I thought if I wrote 'Replacement units for faulty units' on them and mark it as a gift they wouldn't bother Nima
3.0 14.392@97.237 2.302 60ft
OEM 4-bolt LCA's $105 each
Watch me go
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Joined: May 2000
Posts: 1,825
Cool Toe Chris
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Cool Toe Chris
Joined: May 2000
Posts: 1,825 |
I got mine today too! Nima, looks like top quality work!! Now, get them installed on your car and get us the belt par number!  Thanks again! 
Chris
NJ
98.5 SVT Silver Frost
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Joined: May 2000
Posts: 1,359
Webmaster
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Webmaster
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Thanks a bunch for getting these done, Nima! Pic with DMD-Lance
Lance Kinley
CEG Webmaster
95 SE, "Cassandra"
10 years!
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Joined: May 2001
Posts: 277
Admin + 1/2
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Admin + 1/2
Joined: May 2001
Posts: 277 |
Originally posted by 96BlackSE:
Did you guys get charged for customs at all? I thought if I wrote 'Replacement units for faulty units' on them and mark it as a gift they wouldn't bother
Nima
Nope. The postal woman handed me the box and all I had to do was sign for it. We've never had to pay customs after ordering something from Canada. I think the US is much more relaxed about that.
=) Christy
Christy Kinley
95 Contour SE MTX
01 Outback Limited Wagon with all the goodies
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