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PostPosted: Mon Jun 19, 2017 9:27 am 
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Turbo EFI
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Are there any advantages/disadvantages to the cast or fabricated alternator brackets?

Ins/outs/catches?

Specifically, I'm thinking of using the cast bracket on '76 block in my '64 Valiant.

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1964 Valiant V200, 225/Pushbutton 904
BBS, CAI, HEI, LBP, AC, AM/FM/USB, EIEIO


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PostPosted: Mon Jun 19, 2017 10:36 am 
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I believe the A bodies used the same alternator bracket from at least 64-76. Cast iron. The F-bodies had a thick bent sheet sheet metal bracket that sat the alternator a bit farther away from the block. B series vans (in most aplications) used a cast iron bracket on most applications that tucked the alternator the closest to the block of any bracket used on the slant. The 100 amp alternator bracket for b series slant six vans is a fabricated sheet metal piece.

I recommend sticking with the stock cast iron A body piece or going with the van bracket. A body engine bays are tight, and every little bit of space helps.


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PostPosted: Mon Jun 19, 2017 11:31 am 
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'60 Valiants had a bracket that put the alternator on the manifold side of the engine—one kind for nonpower steering, a different kind for power steering. '61 cars used a stamped steel bracket on the distributor side of the engine. '62 through at least '76 cars and trucks used a cast-iron bracket that put the alternator on the distributor side. A-100/A-108 vans used brackets for the manifold side, but not the same as the '60 Valiant brackets. As Reed says, various other brackets were used on various other models. All of them work; use a bracket setup in good condition that puts the alternator where you need/want it.

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Last edited by SlantSixDan on Mon Jun 19, 2017 3:46 pm, edited 1 time in total.

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PostPosted: Mon Jun 19, 2017 1:32 pm 
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Turbo EFI
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Best Upgrade I ever made to my 64' Dart!
Alternator mount from an A-100 van (on the manifold side, down low.)
Image
Image

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PostPosted: Mon Jun 19, 2017 1:43 pm 
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Turbo EFI
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Thanks for the information.

The bracket that's been on the '64 since I got it 30 years ago is fabricated. Until today, I would have bet that it came with the car.

I'll probably try out the cast piece.

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"When you find a big kettle of crazy, it's best not to stir it." - Pointy-haired Boss



1964 Valiant V200, 225/Pushbutton 904

BBS, CAI, HEI, LBP, AC, AM/FM/USB, EIEIO


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PostPosted: Mon Jun 19, 2017 3:39 pm 
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Turbo EFI
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Danarchy wrote:
Best Upgrade I ever made to my 64' Dart!
Alternator mount from an A-100 van (on the manifold side, down low.)

Image


I like that!

It might take some work to clear my AC brackety/pulley/belt arrangement. That sure would make the other side a little nicer for tune-ups, etc.

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"When you find a big kettle of crazy, it's best not to stir it." - Pointy-haired Boss



1964 Valiant V200, 225/Pushbutton 904

BBS, CAI, HEI, LBP, AC, AM/FM/USB, EIEIO


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 Post subject: Either works...
PostPosted: Mon Jun 19, 2017 4:14 pm 
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Either one works, I have both the cast units used with my dusters, and a couple of stamped units (the one on the Aspen, and another off an 80's truck)... one thing to know is if you have done a generous cut on the head (.100+), you may need to buy slightly longer mounting bolts/studs and some washers to shim the cast unit as the head mounting hole geometry will change enough that you may need to slide a couple washers behind it to make things right or risk cracking an ear off when you cinch it down.

One minor irritation I noticed is the change in the alternator pivot point for both mounts, and the size of belt used cast/duster vs. stamped/aspen/little longer than duster.

The stamped unit will be slightly lighter, but also the stamped unit only needs a through bolt for the alternator as it has an integral nut... the cast unit will need a through bolt, washers, lock washer, and a nut..


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PostPosted: Tue Jun 20, 2017 3:56 am 
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I like the cast mount, as it is easier to modify, for a nippendenso alt.

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PostPosted: Tue Jun 20, 2017 6:27 am 
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I had one of the stamped ones break once due to fatigue so I prefer the cast ones. Duster Idiot's observations about the misalignment created by significant head milling is something to be aware of.

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 Post subject:
PostPosted: Tue Jun 20, 2017 6:25 pm 
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Supercharged

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Isn't cast iron brittle?

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 Post subject: Depends on the alloy...
PostPosted: Tue Jun 20, 2017 8:25 pm 
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Quote:
Isn't cast iron brittle?


Depends on the alloy... but yes if stressed and one section of the part takes abuse (say a bolt hole) it will crack that section (like the ears on our exhaust manifolds....)

I will have to dig through my pile, I know there is a third very heavy cast alt bracket that is found on early trucks if I remember right....


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PostPosted: Tue Jun 20, 2017 8:27 pm 
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Good grief, folks, c'mon. Alternator brackets, whether stamped steel or cast iron, usually don't break. Use the one that puts the alternator where you want it. Use the one you have. Don't fret about whether cast iron is brittle, stamped steel is subject to fatigue, etc. On any given car there are enough real problems to solve; no need to make up imaginary ones.

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 Post subject: Lol...
PostPosted: Tue Jun 20, 2017 8:33 pm 
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Quote:
no need to make up imaginary ones.


You mean alternating current isn't angels and demons chasing each other back and forth on the conductor and if they catch each other it let's the magic smoke out....!?!?!??!?!!!!!!


:lol:


Or maybe that was just one wire other brand alternating current....

:roll:

Of course if I drive the car through a deluge of liquid nitrogen... then would the entire car become brittle....


I think that wake up call from the oil pan to the head is causing a misfire in my ignition....

:shock:


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 Post subject: Re: Lol...
PostPosted: Wed Jun 21, 2017 10:42 am 
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DusterIdiot wrote:
You mean alternating current isn't angels and demons chasing each other back and forth on the conductor and if they catch each other it let's the magic smoke out....!?!?!??!?!!!!!!


That mostly happens only if you use DC wire instead of AC wire. Mostly.

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Too many people who were born on third base actually believe they've hit a triple.

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 Post subject: Re: Lol...
PostPosted: Wed Jun 21, 2017 5:31 pm 
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Turbo Slant 6
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"DC wire instead of AC wire"

Aren't very many I haven't heard, that's one. :lol:

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