Alternator, cooling boot ? Options

[luskesq]

I’m replacing the alternator in my ’70 1.7 teener. The cooling boot/vent whatever it is called was missing (99.9% of it). I located an alternator air exhaust elbow on-line that I think attaches to the port on the back of the alternator but I’m not certain where the other end goes. There doesn’t appear to be a place for it to attach to. This elbow is only about 3.5-3” overall so either it isn’t the right part or I’m missing something, figuratively and literally such as more tin. There is a small port slightly below the alt. pivot bolt area coming out of the fan housing. It has a rectangular opening of about 2” x ¾” but for all I know that is part of the heating system and the elbow I have won’t stretch that far.
Would anyone have a picture of what this “boot” is supposed to look like and how it hooks up? Comments & pics are much appreciated.
keith

[jk76.914]

Here's a picture of mine. Ignor the ground wire. The elbow goes from the flattened nipple on the sheetmetal cap on the alternator, and terminates in the fan impeller housing. I think it's pretty clear in the pic. The thing I learned when I was reassembling, and I had heaps of misc parts piled about, is that there are two versions. One is much smaller than the other at the fan housing end. I suspect the smaller one is the earlier one, and it was opened up to improve cooling, maybe when the exhaust was rerouted forward under the alternator in '75? (someone chime in here)

Also, there is a wire oval ring that holds the end in the fan housing. It sits in a groove in the ID (or was it the OD?) of the elbow where it protrudes into the housing. I don't know if the elbow can be installed with the fan in because of this retainer ring. I replaced my rubber elbow with a new one. It was still available in 2002 when I was reassembling, and may still be available today.

The other comment- that sheetmetal "cap" on the alternator- it originally had a gasket under it, but it was NLA at least at the time.

Good luck.