Why? Because I can.
I have leftover pieces parts from the 85 rebuild, so rather than let them go to waste, I figure I'll just go ahead and buy a few more sundry items and run the gambit on rebuilding a mid-year 1984 78A alternator as well. This is the alternator which was on my 84 H/O when I got it. It wasn't even made until after the H/Os were built that year, so I know it isn't the original. I won't be replacing the rotor and stator with new, however, as I cannot find any NOS ones. But the rotor/stator checked out fine electrically on the 85 original pieces with 60K miles, so I'm rolling with those. It won't be quite as detailed as the other thread, but again, there will be comparison pics done. I've got almost $300 in the restoration of the other one, but that was including the big bracket and prepping/refinishing the fasteners too. So far, I'll have MAYBE $110 bucks or so give or take on this one. We'll see which one turned out better looking.
I tore down the 84 unit to parade rest:
And these will be sent out for cleaning/blasting. Now, before you get your panties in a wad about blasting aluminum, the main point of this exercise was that I let someone else do all the refurb on the case last time. For what he charged, plus getting his stodgy attitude for free, I suppose, I figured I'd try this out myself for a LOT LOT less. Granted, I had some fasteners cleaned and plated as well at the time, but I'm still saving a ton. Plus, I have the "AR" stamp already...
The casing is being sent to a guy that does "vapor honing" or basically, water blasting with fine media. The process "seals" the metal so you don't necessarily have to hit it with clear or anything, and no residual media is left over, nothing to clean up really, and it's really a great way to go with aluminum because it's super-gentle on the soft metals. And, for about $65 (includes shipping both ways) for getting this alternator case done...well worth it IMO. It's going out in today's mail.
Examples:
Corvette aluminum valve cover started with the process:
Top cover vapor honed, the bottom two are NOS right out of the box:
Looks pretty good.
And the Corvette alternator case...I was sold.
We'll see where this ends up.
I have leftover pieces parts from the 85 rebuild, so rather than let them go to waste, I figure I'll just go ahead and buy a few more sundry items and run the gambit on rebuilding a mid-year 1984 78A alternator as well. This is the alternator which was on my 84 H/O when I got it. It wasn't even made until after the H/Os were built that year, so I know it isn't the original. I won't be replacing the rotor and stator with new, however, as I cannot find any NOS ones. But the rotor/stator checked out fine electrically on the 85 original pieces with 60K miles, so I'm rolling with those. It won't be quite as detailed as the other thread, but again, there will be comparison pics done. I've got almost $300 in the restoration of the other one, but that was including the big bracket and prepping/refinishing the fasteners too. So far, I'll have MAYBE $110 bucks or so give or take on this one. We'll see which one turned out better looking.
The time has come. I finally took the original code AR alternator out of the 60K mile 85 442. It's going to get a makeover with mostly Delco parts. The casing halves will be refinished and reused. Because-originality to the car.
I will be reusing the internal fastener screws/nuts, front bearing reatiner, and replating and reusing the casing through-bolts, but pretty much everything else will be new GM/Delco parts. I even have new Aptiv (formerly Delphi) correct regulator plastic connector in the semi-transparent cream color.
The new triple diode, resistor, rectifier, rotor, and stator...
I will be reusing the internal fastener screws/nuts, front bearing reatiner, and replating and reusing the casing through-bolts, but pretty much everything else will be new GM/Delco parts. I even have new Aptiv (formerly Delphi) correct regulator plastic connector in the semi-transparent cream color.
The new triple diode, resistor, rectifier, rotor, and stator...
- 69hurstolds
- Replies: 28
- Forum: Restoration
I tore down the 84 unit to parade rest:
And these will be sent out for cleaning/blasting. Now, before you get your panties in a wad about blasting aluminum, the main point of this exercise was that I let someone else do all the refurb on the case last time. For what he charged, plus getting his stodgy attitude for free, I suppose, I figured I'd try this out myself for a LOT LOT less. Granted, I had some fasteners cleaned and plated as well at the time, but I'm still saving a ton. Plus, I have the "AR" stamp already...
The casing is being sent to a guy that does "vapor honing" or basically, water blasting with fine media. The process "seals" the metal so you don't necessarily have to hit it with clear or anything, and no residual media is left over, nothing to clean up really, and it's really a great way to go with aluminum because it's super-gentle on the soft metals. And, for about $65 (includes shipping both ways) for getting this alternator case done...well worth it IMO. It's going out in today's mail.
Examples:
Corvette aluminum valve cover started with the process:
Top cover vapor honed, the bottom two are NOS right out of the box:
Looks pretty good.
And the Corvette alternator case...I was sold.
We'll see where this ends up.