Re: Upgrade to High Amp alternator on my 65...Advice?
[Re: Pool Fixer]
#1093811
10/17/11 02:11 PM
10/17/11 02:11 PM
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Posts: 68 Colorado
68FuryIIIColo
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any dual field from 69 and up works with this one. Napa has the reg and the special connector for it. Here is a thread with pics I did on another site from 10 years ago
130 amp denso alternator conversion
The 130amp denso from a dodge does fit a big block without having to move it. I had to use a nut and grind a spacer with my dremel but that was it.
The bracket for my old Poly motor is a solid bracket, real heavy cast stuff. I'll end up using the angle grinder and thinning out the mount a bit to make it physically fit. I am now left with the question about the regulator...A couple months back I bought one of these: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330597499396&viewitem=&vxp=mtr It's a solid state electronic regulator but not sure if it will work with the higher amp alternator. Right now my square back alternator has one field grounded to the case. Does the new alternator get wired up the same way if may current voltage regulator will work?
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Re: Upgrade to High Amp alternator on my 65...Advice?
[Re: feets]
#1093812
10/17/11 02:33 PM
10/17/11 02:33 PM
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Posts: 68 Colorado
68FuryIIIColo
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The regulator doesn't care what kind of amperage the alternator makes. It's not even in that loop. The only thing it's concerned with is a 12 volt DC current.
You can use either style of old Mopar regulator with new alternators.
Thanks! I must have posted at the same time you did. I just hate buying new parts just to make them obsolete.
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Re: Upgrade to High Amp alternator on my 65...Advice?
[Re: 451Mopar]
#1093813
10/17/11 02:46 PM
10/17/11 02:46 PM
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68FuryIIIColo
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Big block or small block? I put a 130 Amp alternator on my big block, but had to re-locate it because it was too deep to fit in the stock location. I think the 90-amp denso alternators are smaller, and I also think the alternator has more room depth wise on a small block than on a big block. My alternator was off a newer truck with the serpintne belt, but the pulley is keyed and held on with a nut and washer, not press fit like the old original style alternators so it is easy to replace. I went to an alternator repair shop and get a v-belt pulley for less than $20 so it's not that big a deal. One issue may be the spacing between the belts on a multi "v" belt pulley, if you are using two belts? The electrical part is pretty easy. I would switch to an electronic voltage regulator, but the stock mechanical one should work if you ground one field wire (the other connected to the mechanical regulator.) With the electronic regulator the +12 volt switched power that went to the mechanical regulator would now connect to the new electronic regulator AND one of the alternator field connections. The other field connection would run back to the regulator. The Alternator output terminal, connect the stock output wiring and add another 10-AWG wire that connects back to the battery positive (or Starter safety relay BATT connection) through a fuseable link. Thats really all you need. For high draw loads like the radiator fan, you should add another connection/wire to the alternator output stud to get power directly from the alternator.
Not sure where your at in Colorado, but if your around the Denver area I could give you a hand if you need help.
Sounds like I am getting all the answers now. Thanks! I think I have all I need now. Someone at some point upgraded to a square back alternator at some point. I have found the pulley I need too (early 90's van & truck), they are just a B*&%$h to get off in the u-pull yard. Since you mentioned I'll check out the spacing on the actual new pulley and see if it's spaced the same as the original one. I'm down in Parker, not too far from you in Aurora. I may take you up on your offer! I'll keep you posted.
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Re: Upgrade to High Amp alternator on my 65...Advice?
[Re: 451Mopar]
#1093815
10/17/11 07:51 PM
10/17/11 07:51 PM
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68FuryIIIColo
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I was just at the Kaiser Medical building in Parker. Got a sinus infection - yuck. Anyhow, post a photo if the back of the alternator. It should have the two wire plug in connector? Either regulator will work, they just wire up a bit different. Here's a photo of how I mounted my alternator.
Nice looking setup! My alternator has 2 post with nuts holding on the big black connector then one thicker post for the battery/relay feed. I'll post a pic when I get home...on the downside of this Monday at work. ![](/ubbthreads/images/graemlins/thumbs.gif)
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Re: Upgrade to High Amp alternator on my 65...Advice?
[Re: Andrewh]
#1093818
10/19/11 03:58 PM
10/19/11 03:58 PM
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68FuryIIIColo
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so take the field wire from your vr and wire it to one of the field wires.
take another wire and wire it to the other field wire and ground it somewhere. some people ground to the case.
and big wire to charge the battery as normal.
Well cool. That is just how my squareback is set up now. Thanks,
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Re: Upgrade to High Amp alternator on my 65...Advice?
[Re: Andrewh]
#1093819
10/19/11 10:18 PM
10/19/11 10:18 PM
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Joined: May 2008
Posts: 5,399 Aurora, Colorado
451Mopar
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so take the field wire from your vr and wire it to one of the field wires.
take another wire and wire it to the other field wire and ground it somewhere. some people ground to the case.
and big wire to charge the battery as normal.
That should work ![](/ubbthreads/images/graemlins/thumbs.gif)
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Re: Upgrade to High Amp alternator on my 65...Advice?
[Re: 68FuryIIIColo]
#1093821
11/22/11 04:03 PM
11/22/11 04:03 PM
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Joined: Jan 2003
Posts: 27,474 So Cal
autoxcuda
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Those Denso alternators are great. 146 amp is overkill IMHO. But I guess you are planning adding a lot of electrical draw. I went with and internal regulated Denso off a Suzuki Samuari. Advertised at 45-50 amps. Super easy wiring. I was able to modify a stock alternator bracket and just make the right spacers. Mine is awesome at idle at night with all my electrical on. Not even a flicker. ![](/ubbthreads/images/graemlins/thumbs.gif)
Last edited by autoxcuda; 11/22/11 04:07 PM.
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Re: Upgrade to High Amp alternator on my 65...Advice?
[Re: 451Mopar]
#1093826
11/23/11 01:37 AM
11/23/11 01:37 AM
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Looks nice! Hows that Poly 318 run?
I love my Poly! Allot of guys are critical about keeping the old Poly instead of a LA or Magnum motor in it's place. It starts and runs great, keeps up with traffic on the highway and just runs. I put an a518 overdrive behind it and sits at 2100 RPM at 70 mph. Next is a Holley Pro Jection TB with a Megasquirt. The Poly motors have to be uncorked so I put a 4bbl on it for now and have the headers ready to go in it.
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