Long Brush Regulators?

[JHZR2]

Hi,

Looking at alternators and regulators for w123 cars, I ventured over to see what would be available for an equivalent w107.

They do have a 70A alternator with the standard spade connectors like the OR w123 alternators... AL-68-X-INT (006-154-61-02-88), which I assume fits...



But what interests me is the voltage regulator sold on the same Pelican page:
1982 Mercedes-Benz 380SL Convertible - Charging System & Battery - Page 1

The Bosch is marked 14V, and the Hella is marked 14.1V. Ive used the Hella one in the Bosch alternator in my E30 BMW, and it took the voltage up a bit over the stock Bosch. But 14.1V is roughly what you will get slightly below freezing (and it will go a bit higher at colder temps), as a voltage regulator should do.

But what is interesting is the Huco regulator:



Notice the specification - 14.6V! Its only $14.25 as well.

Thing is, these regulators are listed as "long brush".

Now, going to the page for my 82 300CD:

1982 Mercedes-Benz 300CD Coupe - Charging System & Battery - Page 1

THe regulators, which look identical, are called "short brush". Does anyone know anything about this? It sure looks to me like the regulators for the AL-40 or whatever the OE w123 alternator is look like these long brush variants for the higher output alternators.

Heck, the "short brush" regulators shown on the w123 page look like the brushes are longer than the "long brush" ones on the w107...



I cant imagine there are many variations here on the full line of older Bosch alternators....

I may just buy an AL68 or 69, but my alternator seems to be fine. I just want a few more tenths of a volt for battery purposes... I dont have big draw loads in my car that demand a >100A alternator.

But Id sure like that 0.5V from something as simple as a drop-in regulator!!!

Any thoughts on this?

Also does anyone know if the AL-68 and 69 bolt right up to the OM616/617? Are the cases identical and bolt-up? There is so much talk about the 129 versions, but I dont need that capacity I dont think...

Thanks!