Which Underdrive pulley do you like?
Which Underdrive pulley do you like? So far I've looked at the ASP and the SLP. The SLP claims the others have a problem losing the belt as where there's has tall retaining walls to keep the belt on.
What pulley are you using? What does it weigh, if you know? Have you had any issues?
What pulley are you using? What does it weigh, if you know? Have you had any issues?
I have the March pulley and am very happy with it. No issues with it at all. I think it's pretty close to the weight of the stock pulley, but it really doesn't matter since it's fluid dampened (the fluid doesn't spin with the pulley). Also because it's fluid dampened, it won't mess with the knock sensors and does a real good job at absorbing engine harmonics.
Chris
Chris
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Originally Posted by Cstick
Altenator charging issues even with the alt overdrive pulley. Have to keep RPM above 1200 if cooling fans come on or to many other loads. I guess we learn to deal with it.
Are you powering anything extreme like a beefy car stereo system or anything unusual?
Last edited by jcarroll845; Dec 6, 2004 at 10:08 AM. Reason: edit
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From: Raleigh, NC
Well I guess I should say above idle...(-25% pulley with like +15% alt I think)When I am stopped and at idle, with the A/C on, the alternator needs more RPM to handle the blower motor and cooling fans to keep system voltage above 13.2V. It will run around 12V or so at idle. As soon as you hold the RPM at or above 1000RPM or so, the charging system can handle the load. With head lights on at night it just adds to the load.
No car stereo, or anything. Cooling fans, blower motor on high, and other system loads probably draw I am going to guess around 40 amps. With the stock pulley it was a lot better, but with the underdrives at around 1000RPM engine speed the altenator is spinning about same speed it was when the stock pulley was idling.
Nothing major to deal with, until you have to sit and idle for a while and you want to keep the girl friend comfy so you leave the A/C on, and have to keep your foot on the gas to hold the RPM up.
No car stereo, or anything. Cooling fans, blower motor on high, and other system loads probably draw I am going to guess around 40 amps. With the stock pulley it was a lot better, but with the underdrives at around 1000RPM engine speed the altenator is spinning about same speed it was when the stock pulley was idling.
Nothing major to deal with, until you have to sit and idle for a while and you want to keep the girl friend comfy so you leave the A/C on, and have to keep your foot on the gas to hold the RPM up.
Originally Posted by Cstick
Well I guess I should say above idle...(-25% pulley with like +15% alt I think)When I am stopped and at idle, with the A/C on, the alternator needs more RPM to handle the blower motor and cooling fans to keep system voltage above 13.2V. It will run around 12V or so at idle. As soon as you hold the RPM at or above 1000RPM or so, the charging system can handle the load. With head lights on at night it just adds to the load.
No car stereo, or anything. Cooling fans, blower motor on high, and other system loads probably draw I am going to guess around 40 amps. With the stock pulley it was a lot better, but with the underdrives at around 1000RPM engine speed the altenator is spinning about same speed it was when the stock pulley was idling.
Nothing major to deal with, until you have to sit and idle for a while and you want to keep the girl friend comfy so you leave the A/C on, and have to keep your foot on the gas to hold the RPM up.
No car stereo, or anything. Cooling fans, blower motor on high, and other system loads probably draw I am going to guess around 40 amps. With the stock pulley it was a lot better, but with the underdrives at around 1000RPM engine speed the altenator is spinning about same speed it was when the stock pulley was idling.
Nothing major to deal with, until you have to sit and idle for a while and you want to keep the girl friend comfy so you leave the A/C on, and have to keep your foot on the gas to hold the RPM up.
Thanks.