fury fan
Senior Member
Anyone retrofitted a V8 pre-Magnum-style Denso alternator to their bigblock? Not the 60amp Toyota mini-alternator that Mancini, AR Engineering, etc, sell as a kit, but the alternator used on late 80s Diplomat, truck, van with V-belts.
Reasons:
I've done some mockup evaluation and it just doesn't fall into place. The battery stud on the rear is in a bad spot, it buries it in the back against the block. It has a shield around it, so not an elec short issue (unless in a hard collision) but I'm not sold on that yet. Also - it's so close to the block that the alt can only rotate a little bit until that shield hits other bosses on the block.
Using other mounting bosses on the block (for the long pivot bolt) simply moves this connection to other bad spots. There's one boss that looks promising, it mounts the alt a little high like a 65-older AC setup, but that boss is on the 516 heads (my mockup) and I want to install on 906 and 452 -- and there's a freeze plug there on those heads.
It does not look like the elec connections on the alt should be clocked, as then the 2-ear pinching on the long pivot bolt would be lost, and would require a complex bracket to tie the halves together (there are only 4 small screws holding the case together). I feel like mounting the alt via the front case and having the rear float on those 4 screws is asking for durability issues down the road.
Any thoughts/ideas/experience?
Reasons:
- for the cost involved, I want more than 60 amps total of the Toyota 'mini' kit.
- Some of the vendors of the kit mention it has a 'correct' pulley
- I want a parts-store alt with a warranty - not a more-expensive mail-order one.
- I could buy just the conversion brackets, but I don't know if the parts-store Toyota pulley is spaced correctly, the Rock Auto pulley is different than what is shown in the mini-kit pictures.
- from what I see of the Toyota alt, it maybe was only used for a few years in the mid-80s (as a V-belt anyway)
- The Mopar Denso is avail with a V-belt in the late 80s and then with serp all thru the Magnum years, so it'll be available for a long time still
- I believe the pulley spacing of the Mopar alternator will work as a straight-shot to my water housing (still needs verified, though).
- And the Mopar alt is available in 90 amps (or 120 with a larger case)
I've done some mockup evaluation and it just doesn't fall into place. The battery stud on the rear is in a bad spot, it buries it in the back against the block. It has a shield around it, so not an elec short issue (unless in a hard collision) but I'm not sold on that yet. Also - it's so close to the block that the alt can only rotate a little bit until that shield hits other bosses on the block.
Using other mounting bosses on the block (for the long pivot bolt) simply moves this connection to other bad spots. There's one boss that looks promising, it mounts the alt a little high like a 65-older AC setup, but that boss is on the 516 heads (my mockup) and I want to install on 906 and 452 -- and there's a freeze plug there on those heads.
It does not look like the elec connections on the alt should be clocked, as then the 2-ear pinching on the long pivot bolt would be lost, and would require a complex bracket to tie the halves together (there are only 4 small screws holding the case together). I feel like mounting the alt via the front case and having the rear float on those 4 screws is asking for durability issues down the road.
Any thoughts/ideas/experience?