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Author Topic: 2005 Corvette w/ LS2 CS-130D Alternator Upgrade Questions  (Read 1227 times)

tydriver

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2005 Corvette w/ LS2 CS-130D Alternator Upgrade Questions
« on: September 07, 2016, 09:42:01 PM »
I've been reading quite a bit all over the internet lately and I am still stumped to find a conclusive answer.  I own a 2005 Chevy Corvette with the LS2 engine. The RPO tag says its 105 amp installation (later year cars (2006+) came with 150 amp standard).

With the southern (Tennessee) heat, using the air conditioning, and the radiator fans at full song the voltage drops to 11.9v - 12.1v at idle in gear. The voltage goes back up to 13.5v at anything over 800 RPM (i.e. normal driving conditions).  This tells me that the unit is working fine, its just undersized at idle, truth be told 105 amp is probably a little light for such an electronic car anyhow..

Sure, I could just grab an alternator from a 2006+ car, but what fun would that be ? I mean hot-rodding is all about DIY'ing something cooler than stock.  I want more power than 150 amp to ensure this is a once and done deal (200+ amps would be nice as additional fans are anticipated for additional coolers, trans/oil etc..). I understand a lot of sites like to recommend an upgrade in equipment to the AD244 alternator.

The problem I have with upgrading to an AD244, is that the clearance on this car is a bit tight around the alternator and I am not certain this alternator will fit. It physically appears bigger to me, in all the pictures I have seen.

I'm pretty handy with tools (A&P mechanic) and I've rebuilt an alternator or two in my past, but nothing as new as this unit. So this leads me to two questions I cannot find an answer to:

1.   Is the case on the AD 244 physically larger than that of the CS-130D alternator ?  (I understand the critical dimensions like mount bolts, electrical connector, and pulley etc are all the same).

2.   Are any parts available to make the CS-130D a "High Output" unit so I can retain the same size case/unit ?   

3.  What amperage is available, I've swapped stators and other 'innards' on other alternators in the past and I am not afraid to do it again, I just want to get the correct parts the FIRST time.

Thanks in advance for any assistance that anyone can offer. I appreciate it !!

Todd
tydriver@gmail.com

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2005 Corvette w/ LS2 CS-130D Alternator Upgrade Questions
« on: September 07, 2016, 09:42:01 PM »

tydriver

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Re: 2005 Corvette w/ LS2 CS-130D Alternator Upgrade Questions
« Reply #1 on: September 16, 2016, 02:43:59 PM »
Nobody ?? Not a single response?? Anyone ??

I've continued to research this issue since posting here and I have additional information. My research now indicates that the alternator installed on my car may actually be a VALEO alternator.. If this is the case I assume Valeo alternators are not the same as a CS130D alternator.. Correct ??

I have found even LESS information available online about Valeo and their alternators.. It would appear that they are a French company? They make alternators in Mexico ??  IDK, anyhow I am still having this problem and want to tear into it and fix it.  How can I make the output higher on this alternator, does anyone have any input ?

Danielvix

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2005 Corvette w/ LS2 CS 130D Alternator Upgrade Questions
« Reply #2 on: September 27, 2016, 05:28:38 PM »
Great post    a 250 amp alternator his on my list for this spring when I do my roof lights.