EA alt question

[22mountaineer 10+ year member]

Is nate the only one who says to get a smaller pully? Because everyone that is saying to get one says talk to nate, but this debate came up awhile back and it seemed like in the end it doesnt matter. Not trying to debate though because I know I will have a few wiz's showing me formulas to prove thier statement.

 

[audioarsonal 10+ year member]

It has to do with ratio's.If your off in one of the areas it will throw off everything.Lower idle,smaller crank pulley,to big alt pulley are some of the main factors when you are dealing with alternator.

 

[22mountaineer 10+ year member]

I understand it has to do with ratio's, like I said Im not a wiz so I couldnt not argue either side, I believe it was ignoreme that was giving some pretty good examples of why it didnt matter.

Sounded good anyways, and all the other people could say was "he said it" and say a smaller pully would turn faster..

 

[IgnoreMe 5,000+ posts]

smaller pulley = higher rotor speed in the alternator at the same speed of the engine. i didnt read the whole thread, but i read the OP post. so if someone already said it, meh

this exactly situation happened to a friend of mine. motor city reman alt. then we put a smaller pulley and it improved, slightly but not enough. so then he got a refund, and bought a mean green. problem solved with the stock pulley on it.

 

[mobeious 10+ year member]

vid uploaded now... imma let nate try to fix the situation without changing the pully... cause i dont want to mess up something else on the truck

 

[22mountaineer 10+ year member]

I think it was the smaller belt debate that I was thinking of.

 

[mobeious 10+ year member]

vids

http://www.youtube.com/watch?v=sgyo07Nns-8

 

[Rawr-DQ 10+ year member]

Just seems like the alt is turn off at the lower RPM's

 

[mobeious 10+ year member]

exactly... if i turn off the truck at idle the **** voltage dont change lol

 

[Rawr-DQ 10+ year member]

then, a smaller pulley should get the alt moving faster at lower rpms and will charge.

 

[mobeious 10+ year member]

but will the smaller pully throw anything else off ... i want 14.7 at idel like my factory alt does

 

[Rawr-DQ 10+ year member]

the voltage regulator is what is supposed to maintain the voltage, spinning the alt faster shouldn't really affect the voltage much.

And a smaller pulley on the alternator will only affect the alternator. (besides the fact it takes a lil more torque to move it, but that will probably be negligable)

 

[Lakota 5,000+ posts]

I love having full output at idle //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif It makes shows a lot easier since I can't sit in the truck past 145 dB.

 

[WrenchGuy 10+ year member]

I don't see anything wrong with it? If its a serious issue for you just get an external regulator. The car is regulating your voltage that way.

 

[xclusiv3 10+ year member]

my Ea works great, no problems and at idle i think it sits at 13.8......foreign cars FTL though, ***** cost a lot