emccomas

A few years ago I recall seeing an alternator bracket adjustment plate.

My alternator (I am going to say on my Vette to keep this On Topic) does not exactly line up with the other two pulleys,

My pullery / accessory system is as such from front to back is (based off of the three groove crankshaft pulley):

Forward pulley setup: Crankshaft pulley to Power steering pump
Middle pulley setup: Crankshaft pulley to water pump pulley to Vintage Air compressor
Back pulley setup: Crankshaft pullet to water pump pulley to alternator pulley

The alternator pulley mount arrangement is just like that on a 1963 Corvette with A/C (left side mounted alternator), with the alternator bracket mount cast into the exhaust manifold.

The problem is that the alternator is about 1/2 inch behind where it should be The pulley is about 1/2 inch behind alignment on the crankshaft and water pump pulleys.

Given that the other pulleys / accessories all line up properly.

So, I know that I have odd assortment of parts for pulleys on just about everything.

Now to the part in question. I recall seeing that part that adjusted the position of the alternator either forward or backward about 1/2 inch (depending on how it is mounted.)

The plate is about 3/16 inch thick steel, and looks sort of like this...


Any ideas where I can locate this plate.

As an alternative, what is out of alignments?

Muttley

C1s use a plate like that to mount the generator, and there are a couple of different ones depending on application. I may have one laying around, and if so I can measure the offset tomorrow.

Chuck Gongloff

Here's one from ZIP. Says "FI". Not sure if there are others with different offsets.

https://www.zip-corvette.com/58-61-6...unt-plate.html

mrichard

If you can come up with some accurate dimensions, I will make it for you for free. This is a simple part to make. I can slot the bolt holes which will give you some room to line things up as needed...Change the dimensions on this drawing to fit your car. I just drew this up as an example. I hate to see someone struggle with something like this. I have CNC equipment and I have already made this model in Solidworks for you. There is no catch to this BTW.
Michael

leif.anderson93

Now, there's a hell of an offer I wouldn't pass on. Very nice of you Michael.

Muttley

Ed:

The spare one I have is actually the non-FI plate shown here:

https://www.zip-corvette.com/62-gene...te-non-fi.html

The hole pairs on this one have different spacing; referencing the photo in the link,the upper two holes are approx. 4 1/8 in. apart, and the lower holes are approx. 3 1/4 in. apart. So, this one may not meet your needs, although if it does you are welcome to it. Otherwise, I'd also say Michael's offer seems pretty good.

emccomas

mrichard;

Here is an updated diagram with dimensions. The plate is 1/4 inch thick steel.

The only dimension that is critical is the distance between holes A and B.

Thanks so much for this kind offer.

Please let me know if I can compensate you in any way?

Ed

mrichard

Ed, 3.675" seems like an odd dim for an old C2. Are you sure, could it be 3.687 (3 11/16") or something else? I would suggest that both the slots and bolt holes be 13/32" (.406) for normal clearance using 3/8" bolts. OK?
Also need dim from centerline top slots to centerline bottom holes.

mrichard

Revised model. Note that these are real world measured dimensions based on 5.250 length (5 1/4"). You can't get 3/4" to the edge of top R.H slot based on your sketch. Seems OK to me as is. The slots could be considerably longer if you think you may need more adjustment. The machine don't care, it will make them what ever I model up.

mrichard

Ed, I came up with this drawing of the L.H. exhaust manifold for a 327. It looks like the mounting dimension for the alternator 3.71 on the drawing. See attached pic. Should we go with this dimension or do you want to use your earlier dim of 3.675. I can make the part today or when you make a decision. Kindly private message to me your address and I will send it to you by USPS priority mail.

emccomas

I like your modes, and use the dimensions on the exhaust manifold drawing.

You are obviously talented at this, and I really appreciate it. Go with it.

Ed

mrichard

Here is the finished bracket. I put it into the blast cabinet so that it will take paint nicely. I will take it to Post Office tomorrow during non peak hours in order to avoid the Covid-19 non believers.