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| Alternative Alternator? https://slantsix.org/forum/viewtopic.php?t=13342 |
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| Author: | Pierre [ Sun Jun 12, 2005 10:09 pm ] |
| Post subject: | Alternative Alternator? |
Has anyone tried one of these or have any info on them? http://www.partsamerica.com/ProductDeta ... 11&ptset=A Kragen lists it as an oversized option. It appears to be a different non-mopar case. I wonder what its output at idle is..... |
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| Author: | Eric W [ Sun Jun 12, 2005 11:20 pm ] |
| Post subject: | |
Might be an alternator that was used in police cars...can't tell without seeing the front. They looked kinda like GM units. Another alternative is a Nippondenso alternator. Seen several on both slants and V8's. You can ( I believe) find the V belt pully types on early '90's Chrysler mini-vans and I think late '80's Toyota pickup/4 Runners. Don't ask me how they are wired up though....I hate working on wiring. |
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| Author: | Craig [ Mon Jun 13, 2005 6:49 am ] |
| Post subject: | Re: Alternative Alternator? |
Quote: Has anyone tried one of these or have any info on them?
The picture in that link looks like the Chrysler 100 amp alternator. It was used on the bigger cars that had power everything (windows, seats, rear window defrost grid, etc.) I don't know if a slant ever had one or not, maybe a very rare fleet slant. Those alternators use a different mounting bracket setup. They also have rubber grommets in all the mounting holes.http://www.partsamerica.com/ProductDeta ... 11&ptset=A Kragen lists it as an oversized option. It appears to be a different non-mopar case. I wonder what its output at idle is..... I'm sure there are modern alternators today that can put out as much but in a much smaller package. |
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| Author: | SlantSixDan [ Mon Jun 13, 2005 7:47 am ] |
| Post subject: | |
There was a bracket for the monster Chrysler 100A large-frame alternator for the slant. Won't fit in the earlier applications (hits the car body!). And yes, there are much smaller, lighter units now available that do the same job. The Nippondenso units used on many Chrysler products since 1989, for instance. |
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| Author: | Pierre [ Mon Jun 13, 2005 7:31 pm ] |
| Post subject: | |
Long story short - some may of seen pictures of my monster 200A powermaster setup - I had to get rid of it because output at idle in gear (5-600rpm) was 0, it didn't triger until about 800 rpm. Ended up at napa getting one of their "premium" line units for an 89 dodge truck 318 - it came stock with v-belts (Also picekd up an echlin regulator, stock for a 71 duster, vr38 I believe). It was a 90a unit - I opted for this one over the 120A units because I know typically the higher you go amperage wise the more you lose at the bottom end - I may be mistaken, perhaps these nippondenso setups are more efficient at booth ends. The v-belt pulley it came with was big... well, relative bigger then the stock chrysler pulley at least. 3" diameter I believe.... this worked ok, but again, only at rpm's exceeding 800 or so, under that it would not hold up to all the accessroies on - I put on a pulley that was about 2.3" diameter, and now with the electric fan, msd 6a, efi, heater motor and highbeams it runs at 13.2v on 500 engine rpm's. The alternator was $130 (3 year warranty) + $50 core. I may go get a core from a junkyard to give back to napa - perhaps I'll try it on the car to see what its characteristics at idle are, I know Dan mentions often times the parts store rebuilds are lacking in the lower end. |
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| Author: | Pierre [ Mon Jun 13, 2005 8:57 pm ] |
| Post subject: | |
I take that back, I just went for a drive... at 13.2V with all accessories on must of been more closer to 600... I was dataloging, and with the car idling and just the electric fan running, @ 500rpm, we were back down to battery voltage. Hmm, must fiddle with idle so its at least 600 in gear with everything on, a solid steady 600 that is heh. |
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| Author: | 440_Magnum [ Wed Jun 22, 2005 8:38 am ] |
| Post subject: | |
That's just a Chrysler "100-amp" alternator, used in heavy-duty applications including copcars and the big C-body luxo-barges with power everything. IMO, its one of the best all-around alternators ever built- well OVER 100 amps of output current at speed, and holds 70-80 amps pretty much down to idle. They're also tough as nails. I have one each on my '73 Satellite and on my '66 Dodge, plus about 3 or 4 of them for "cores" to get rebuilt when I need to. The downsides: 1) they require different brackets than the Chrysler finned alternator. Gotta scrounge junkyards for the correct brackets for your engine, and I don't know how many (if any!) were ever supplied on /6 cars. 2) They're physically big with a big-honkin fan behind the pulley, which gets audibly noisy at high speeds, but BOY does it pump the air through them! A big part of their reliability. Interestingly, its not actually much heavier (just a couple pounds) than the regular Chrysler finned-case alternator. If you're going custom with brackets and everything, a better bet would probably be a Bosch or Nippondenso alternator off a '90s Ram truck or similar. They're smaller and quieter, have the same output, and are almost as reliable. |
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