914/6 2nd question of the day. Voltage regulators? Options

[Tdskip]

Second question mid build, as I mentioned on the other thread I’ve got a 2.4 L 911 engine going into my 1974 914. The 1974 9/11 would’ve originally had an external voltage regulator, I’m not familiar enough with my 911 set up to know if it also had an external regulator or if it was internal to the alternator..

Anyone able to drop some knowledge on that?

Thanks!

[lesorubcheek]

The '73 2.4 E engine I'm planning to use in our 914 presently has an external regulator. Started researching options for an alternator with an internal regulator and so far haven't found the definitive resource that explains all the 911 alternator ins and outs. Looks like there's the wosp high output alternators, but they're pushing 1k. At some point the diameter of the shaft changed, so I don't think it's just as easy as getting a later model one with integral regulator and slapping it in unless you have an appropriate fan that'll fit. May even need the housing, but not sure. The rear air channel piece also looks like changed, and haven't found out if it can be easily modified or if a new one would be needed. This is all from memory when I was researching a few weeks ago.

Dan