ULTM8Z

My CS130 started going out, so figured I'd upgrade to get better idle output.

Basically followed Den11's thread. Had to elongate the hole as he described, and put in the 470 ohm resistor as well.

https://www.thirdgen.org/forums/elec...onversion.html

So far so good... still need to get the new belt before I can fire it up.

The only thing I did differently was style of the rear brace. I know some people are evidently successfully running these alternators w/o any kind of rear bracing at all, but like Denn11, I figured I'd go on the safe side and put something in.

Ended up with this approach. It's a piece of .125" thick angle steel that I cut to fit and bolted to the side of serpentine bracket. It's simple, but it's rigid as hell...

Hopefully get to the auto parts store in the next day or so to get the belt.

sofakingdom

iTrader: (1)

The brace looks pretty much like something you can't do without, at least if you're actually going to ever approach the alt's capacity. Hard to believe people would try to skimp on something so simple.

ULTM8Z

Yeah it just seems like it was going to be too much of a moment arm on the serpentine bracket's front mounting point. That belt puts a lot force on the pulley (just in a static condition) and I wasn't convinced the bracket was sufficient to react it properly for long term reliability.

To be clear, Den11 also did a rear brace (a custom one that mimics the factory version, just shorter). I didn't have the equipment to duplicate what he did, but I think this gets the job done.

PaulyC

Hmmm, somebody went to college huh?

ULTM8Z

lol.... mechanical engineering, yeah

PaulyC

I saw it from a mile away! You are not alone...

ULTM8Z

lol... yep.... I don't live a normal life...

ULTM8Z

I must have got a bum alternator. Cheap NAPA reman.... noisy as hell and only putting out 13.4V at idle... 130 amp my a$$.... My old CS130 did better than that!

Guess I'll be taking it off and returning it...

ULTM8Z

Ended up ordering a factory delco alternator, should be here on Tuesday. I never seem to learn my lesson with these cheap-a$$ remans...

ULTM8Z

Got the Delco installed today... Thanks to Den11 for pioneering this swap!

Simply awesome... The factory Delco alternator is smooth as silk and quiet as a mouse. So yeah, I've bought my last "reman" anything...

The idle output is phenomenal. With everything on... A/C on high with auxilliary condenser fan, stereo, headlights, Taurus two-speed radiator fan on high, and the EFI system itself, I'm getting 14.3V at the back of the alternator.

My old CS130 would barely keep up... getting around 13.1V.

Ironmike77

Would it be possible to get a bracket like that made for me? I’ll pay for time and the hardware. Thanks!