519 trans ratios

Mr. OGPaint · Posted: Sun Sep 27, 2015 6:48 pm Post subject: 519 trans ratios

I have a 519 in my car, what gear ratios would this transaxle most likely have?

tom coughlin · Posted: Mon Sep 28, 2015 5:22 am Post subject: 519 ratios

Does it have four letters cast into the case like BBAB or BBBC? If yes, from that you can decode the gear ratios originally installed.

Mr. OGPaint · Posted: Mon Sep 28, 2015 7:53 am Post subject:

I will look for the letters, where would I find this info? I'm suprised the numbers would be cast in, as these started as vw castings

tom coughlin · Posted: Mon Sep 28, 2015 8:03 am Post subject: 519

I should have said stamped in. Tom

tom coughlin · Posted: Mon Sep 28, 2015 8:08 am Post subject:

Here is a link for a picture of a 644 but I think its in the area. http://convertibledregistry.com/images/engine_trans_number_locations/644_TransSerialNo.jpg

Mr. OGPaint · Posted: Mon Sep 28, 2015 9:34 am Post subject:

Thank you so much Tom_Coughlin, I'll report what I find

James Davies · Posted: Mon Sep 28, 2015 10:19 am Post subject:

Information on the 519 transaxle can be found in the 1954 Porsche Service Manual, page R1:

Mr. OGPaint · Posted: Wed Sep 30, 2015 6:09 am Post subject:

It's very greasy but the numbers I've found so far are 3887, it's stamped on both case halves, one is near the starter pad and the other is on the rib on the bottom of the trans. Is this a serial number?

Image may have been reduced in size. Click image to view fullscreen.

And here is a pic of the vent near the starter

James Davies · Posted: Wed Sep 30, 2015 8:37 am Post subject:

Yes, that's the serial number. That's the reinforced (ribbed) case version of the 519, used from mid-1954 onward. Based on the serial number, I would think it was on a car built in late '54?

Mr. OGPaint · Posted: Wed Sep 30, 2015 3:19 pm Post subject:

Mr. OGPaint · Posted: Tue May 17, 2016 11:04 pm Post subject: Re: 519 trans ratios

So guys, earlier in the thread we have the gear ratios....does anyone know the ring and pinion ratio?
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tom coughlin · Posted: Fri May 20, 2016 8:35 am Post subject: Re: 519 trans ratios

The 1954 shop manual states on page D3:

"Rear axle drive ratio
1.4.375 or 1.4.428"

On page R2 it states:
"Crown wheel and pinion gear 1.4.375 (8:35) i.e. 1.4.428 (7.3)."

I hope that helps. Tom


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