Home
What's new
Latest activity
Authors
Store
Latest reviews
Search products
Forums
New posts
Search forums
What's new
New posts
New listings
New products
New profile posts
Latest activity
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
Cart
Cart
Loading…
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Search titles only
By:
Menu
Log in
Register
Navigation
Install the app
Install
More options
Change style
Contact us
Close Menu
Forums
Cobra Forums
The Terminator
Terminator Talk
VERY IMPORTANT INFO! could explain alot of engine failures!!
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="FireRed04Vert" data-source="post: 2656714" data-attributes="member: 21229"><p>Willie...</p><p></p><p>First...the use of the larger alternator pulley with the larger lower will maintain close to factory rpm specs for the speed of the alternator. At all engine rpm's from idle on up. The lower speeds it up and the larger alt pulley brings it back down to where the factory wants it. If you do the math, you will find it's very close.</p><p></p><p>As to why the the voltage is falling off at higher rpm's...which is just the opposite of what old school thinking is...is exactly what Hermann is trying to discerne. My guess is you are going to find it's in the alternator itself, but more testing needs to be done.</p><p></p><p>Hermann...have you checked for amp draw during these tests instead of just voltage? Voltage tests will only show you half the picture. Let's see if there are some huge draws going on due to the BAP or something else wierd. Have you tried a new alternator? If you duplicate it with a new alternator, I would be very concerned as to what's going on here.</p><p></p><p>I believe these alternators are rated at 130 amps...but I'm not positive on that.</p><p></p><p>Hermann....I would try and pull the alternator off the car and take it to an electrical shop who can spin it on a test bench and put it under a load. You may have to go to a very small pulley to get it to these speeds. If the problem duplicates, then it's either a faulty alternator or a design flaw. If not, I would look for reasons on the car.</p><p></p><p>The fact that you can slow the alternator down and improve the situation tells me it's a problem with the design of the alternator...not the car. This may be one huge reason there is such a high failure rate on these alternators. If I were experiencing this situation, I wouldn't consider a capicator...that's just a band aid for a bad wound. I would invest in a high quaility aftermarket alternator that will withstand the rigors we put it through...and I would definitely use the pulley that keeps it at factory speeds or even slower.</p></blockquote><p></p>
[QUOTE="FireRed04Vert, post: 2656714, member: 21229"] Willie... First...the use of the larger alternator pulley with the larger lower will maintain close to factory rpm specs for the speed of the alternator. At all engine rpm's from idle on up. The lower speeds it up and the larger alt pulley brings it back down to where the factory wants it. If you do the math, you will find it's very close. As to why the the voltage is falling off at higher rpm's...which is just the opposite of what old school thinking is...is exactly what Hermann is trying to discerne. My guess is you are going to find it's in the alternator itself, but more testing needs to be done. Hermann...have you checked for amp draw during these tests instead of just voltage? Voltage tests will only show you half the picture. Let's see if there are some huge draws going on due to the BAP or something else wierd. Have you tried a new alternator? If you duplicate it with a new alternator, I would be very concerned as to what's going on here. I believe these alternators are rated at 130 amps...but I'm not positive on that. Hermann....I would try and pull the alternator off the car and take it to an electrical shop who can spin it on a test bench and put it under a load. You may have to go to a very small pulley to get it to these speeds. If the problem duplicates, then it's either a faulty alternator or a design flaw. If not, I would look for reasons on the car. The fact that you can slow the alternator down and improve the situation tells me it's a problem with the design of the alternator...not the car. This may be one huge reason there is such a high failure rate on these alternators. If I were experiencing this situation, I wouldn't consider a capicator...that's just a band aid for a bad wound. I would invest in a high quaility aftermarket alternator that will withstand the rigors we put it through...and I would definitely use the pulley that keeps it at factory speeds or even slower. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Cobra Forums
The Terminator
Terminator Talk
VERY IMPORTANT INFO! could explain alot of engine failures!!
Top