Alternator Upgrade Situation

[Moki]

Here are my readings at different idle speeds, the volts really jump when I am around 1400 rpm or higher.

[spharis]

What RPM is the charging kicking in. It looks low in the 750 RPM range, but there could be a blower running or something too. Mine starts to output heavy around 850 RPM, but my engine also idles there. There must be a blower running b/c the 1400RPM is down about .4 volts.

[Moki]

Mine doesn't really kick in the full 14.4 until I am around 1600 rpm. No blower was running - battery was nearly dead - I don't know if that would make a difference or not. Mine idles at 750. I was hoping that the smaller pulley would create more power at lower rpms. Any ideas on what is going on or any suggestions?

Here is the reading at lower rpm:

[Moki]

Glad it worked out for you!

Thanks Dogbert!!! I appreciate that coming from the site's top dog!

[spharis]

I think you need a smaller pulley. Call DB and ask.

[Domsz06]

i agree with sp.

Glad you did get it all working.

[Razzman]

Hey Moki, now that you've got your spacing correct i would make a solid one piece spacer larger in diameter than what you have to support the assembly better, less room for flex.

[Domsz06]

Razz you took the words out of mymouth.

[Razzman]

Sorry dude! Yeah i'm worried Moki's going to get a lot of flex as there are a lot of flex points with all those washers there. Which in turn will allow the belt to flucuate.

[Domsz06]

yeah I see that being a huge problem. Belt wear stinks too!

[Moki]

Razz,
Good suggestion. Do you have any Ideas on what I could use as a spacer?

Spharis:
I think that I have the smallest pulley, but I will ask.

Dom:
Thanks for your comments as well.

[Domsz06]

Moki,

Could you use some steel pipe? for a spacer? or maybe some square tubing?

[Razzman]

If it was me i'd try and use a piece of round stock aluminum and just bore a hole in the center. A machine shop could make you one for around $20 or so. If you can't find that then you could use some heavy gauge galvanized plumbing pipe and just cut to length.

[Razzman]

Square tubing would work as well. It's not the shape but the rigidity that counts. The more material against the block and alt the better, within reason of course.

[Razzman]

Hey Moki, I just remembered that some of your larger auto parts stores carry spacers as well in various sizes. I'd try something like a Napa store or such.