C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

quick question alternator

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Old Dec 27, 2008 | 07:50 PM
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Default quick question alternator

i have a 85 corvette and need a alternator, so i would like to get a high amp output chrome one. problem is every chrome one i look at that says it will fit/work also says it will work with other cars too (most listed are not reverse rotation like ours) so i guess my question is does it matter which way the alternator turns? or because of our belt routing maybe it turns it the same way as lets say camaro?
let me know........ thanks
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Old Dec 27, 2008 | 08:02 PM
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If I remember correctly the alt pulley has grooves, meaning it turns clockwise. When I did my swap I used the original alt and it worked.

It's a 91' so there may be a difference though
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Old Dec 27, 2008 | 08:27 PM
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Just buy a CS-144 and be done with it. (12o amp model). It doesn't matter which direction the alternator is spun, it will still put out DC voltage in the correct polarity.

Originally Posted by ladystoy69
i have a 85 corvette and need a alternator, so i would like to get a high amp output chrome one. problem is every chrome one i look at that says it will fit/work also says it will work with other cars too (most listed are not reverse rotation like ours) so i guess my question is does it matter which way the alternator turns? or because of our belt routing maybe it turns it the same way as lets say camaro?
let me know........ thanks
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Old Dec 27, 2008 | 08:34 PM
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The C4 L98 water pump is reverse rotation. The alternator is not.

RACE ON!!!
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Old Dec 28, 2008 | 12:34 AM
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Originally Posted by ladystoy69
i have a 85 corvette and need a alternator, so i would like to get a high amp output chrome one. problem is every chrome one i look at that says it will fit/work also says it will work with other cars too (most listed are not reverse rotation like ours) so i guess my question is does it matter which way the alternator turns? or because of our belt routing maybe it turns it the same way as lets say camaro?
let me know........ thanks
Also don't forget that chrome anything has a shorter(in this case MUCH shorter) life expectancy. Chrome insulates and helps to create a CRAP LOAD of heat. Depends on what you do with your car, and if your willing. Just my.02
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Old Dec 28, 2008 | 12:42 AM
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Oh really?....

Originally Posted by BluRay
Also don't forget that chrome anything has a shorter(in this case MUCH shorter) life expectancy. Chrome insulates and helps to create a CRAP LOAD of heat. Depends on what you do with your car, and if your willing. Just my.02
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Old Dec 28, 2008 | 12:44 AM
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Originally Posted by JimiHendrix
Oh really?....

YEAH F*CKIN REALLY!

To decrease the source of heat from the engine you may try shielding. To do this it is suggested that you purchase a sheet of aluminum, available from your local hardware store. Form it around the alternator and attach it to the engine. DO NOT ATTACH OR TOUCH THE ALTERNATOR. This will help direct the heat around and away from the alternator reducing the killer heat. Also, stay away from pretty plated chrome or gold alternators. The plating prevents heat dissipation causing the alternator to hold more heat in. Remember, heat kills!

http://www.cardiscountstereos.com/Alternators.asp

Last edited by BluRay; Dec 28, 2008 at 12:48 AM.
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Old Dec 28, 2008 | 01:48 AM
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Dark colors absorb heat.....lighter and reflective surfaces reflect and dissipate heat better. The source of the heat is from the engine compartment. . . .not from within the alternator. . . . otherwise I would agree with you....

YOU WANNA STEP OUTSIDE ON THIS??!?!?!?!?......

Originally Posted by BluRay
YEAH F*CKIN REALLY!

To decrease the source of heat from the engine you may try shielding. To do this it is suggested that you purchase a sheet of aluminum, available from your local hardware store. Form it around the alternator and attach it to the engine. DO NOT ATTACH OR TOUCH THE ALTERNATOR. This will help direct the heat around and away from the alternator reducing the killer heat. Also, stay away from pretty plated chrome or gold alternators. The plating prevents heat dissipation causing the alternator to hold more heat in. Remember, heat kills!

http://www.cardiscountstereos.com/Alternators.asp
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Old Dec 28, 2008 | 02:44 AM
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Originally Posted by JimiHendrix
Dark colors absorb heat.....lighter and reflective surfaces reflect and dissipate heat better. The source of the heat is from the engine compartment. . . .not from within the alternator. . . . otherwise I would agree with you....

YOU WANNA STEP OUTSIDE ON THIS??!?!?!?!?......
Well considering we are not setting these alternators out on the curb in the sun color has absolutely nothing to do with it. It's the fact that the thicker and additional plating hinders the alternators ability to radiate heat. I'm not sure where you get your notion that the heat does not come from within. Go run your car for an hour with the hood open and grab hold of the alternator REAL TIGHT. Let me know when your hand heals. Corvettes inherently have a lot of under hood heat as well that only compunds this issue.

This is far from the point of the post. I was only letting the OP know that chrome alts. do not last nearly as well as non. If he uses his car for often driving especially in the city or traffic this can be a real draw back.

IF we go outside only one of us is coming back in.....

Last edited by BluRay; Dec 28, 2008 at 02:45 AM. Reason: spelling
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Old Dec 28, 2008 | 02:48 AM
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BLURay

Easy there brother

YEAH F*CKIN REALLY!


Jimi
YOU WANNA STEP OUTSIDE ON THIS??!?!?!?!?


Last edited by cv67; Dec 28, 2008 at 02:51 AM.
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Old Dec 28, 2008 | 02:54 AM
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Originally Posted by cuisinartvette
BLURay

Easy there brother


CFI, BluRay. BluRay, meet CFI
LOL, well I hope it is just good will charged conversation. I am just not fond of getting a ribbing or eye roll on something as if I am just saying it for the fun of it. If there is something that I am not sure about or is an opinion I will state that fact. Don't get me wrong I'm far from perfect and make mistakes......lots of em', but unless you can support your argument don't argue with me


The whole point here is to help each other with information we may not have or have considered. That was my attempt here as well.
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Old Dec 28, 2008 | 01:11 PM
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That sounds like someone else I know.

RACE ON!!!
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Old Dec 28, 2008 | 01:22 PM
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Originally Posted by cfi-efi
that sounds like someone else i know.

Race on!!!
are you two guys related ? :d
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