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Mr. OGPaint Samba Member
Joined: September 24, 2010 Posts: 823 Location: Oregon
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Posted: Sun Sep 27, 2015 6:48 pm Post subject: 519 trans ratios |
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I have a 519 in my car, what gear ratios would this transaxle most likely have? |
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tom coughlin Samba Member
Joined: February 16, 2008 Posts: 67 Location: near Boston
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Posted: Mon Sep 28, 2015 5:22 am Post subject: 519 ratios |
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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.
Last edited by tom coughlin on Mon Sep 28, 2015 2:01 pm; edited 1 time in total |
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Mr. OGPaint Samba Member
Joined: September 24, 2010 Posts: 823 Location: Oregon
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Posted: Mon Sep 28, 2015 7:53 am Post subject: |
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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 |
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tom coughlin Samba Member
Joined: February 16, 2008 Posts: 67 Location: near Boston
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Posted: Mon Sep 28, 2015 8:03 am Post subject: 519 |
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I should have said stamped in. Tom |
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tom coughlin Samba Member
Joined: February 16, 2008 Posts: 67 Location: near Boston
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Mr. OGPaint Samba Member
Joined: September 24, 2010 Posts: 823 Location: Oregon
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Posted: Mon Sep 28, 2015 9:34 am Post subject: |
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Thank you so much Tom_Coughlin, I'll report what I find |
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James Davies Samba Member
Joined: September 24, 2013 Posts: 141 Location: Baltimore, USA
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Posted: Mon Sep 28, 2015 10:19 am Post subject: |
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Information on the 519 transaxle can be found in the 1954 Porsche Service Manual, page R1:
Code: |
gear ratio teeth g1 teeth g2
1st 1:3.182 11 35
2nd 1:1.765 17 30
3rd 1:1.130 23 26
4th 1:0.815 27 22
Rev 1:3.56
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This was standard for coupes and cabs. Closer ratio gears were standard on Speedsters and available to racers.
What year is your car? Is the transaxle ribbed or a smooth-case? |
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Mr. OGPaint Samba Member
Joined: September 24, 2010 Posts: 823 Location: Oregon
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Posted: Wed Sep 30, 2015 6:09 am Post subject: |
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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?
And here is a pic of the vent near the starter |
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James Davies Samba Member
Joined: September 24, 2013 Posts: 141 Location: Baltimore, USA
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Posted: Wed Sep 30, 2015 8:37 am Post subject: |
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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? |
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Mr. OGPaint Samba Member
Joined: September 24, 2010 Posts: 823 Location: Oregon
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Posted: Wed Sep 30, 2015 3:19 pm Post subject: |
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James Davies wrote: |
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? |
Thanks for this info and all the help so far guys _________________ https://instagram.com/mr.ogpaint
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Patrick Hall |
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Mr. OGPaint Samba Member
Joined: September 24, 2010 Posts: 823 Location: Oregon
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Posted: Tue May 17, 2016 11:04 pm Post subject: Re: 519 trans ratios |
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So guys, earlier in the thread we have the gear ratios....does anyone know the ring and pinion ratio? _________________ https://instagram.com/mr.ogpaint
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Patrick Hall |
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tom coughlin Samba Member
Joined: February 16, 2008 Posts: 67 Location: near Boston
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Posted: Fri May 20, 2016 8:35 am Post subject: Re: 519 trans ratios |
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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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