716 Nose Cone

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Peter Silten
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716 Nose Cone

#1 Post by Peter Silten » Sun Sep 08, 2019 10:50 pm

Can someone please provide a photograph of a nose cone for a 716 transmission. What is the nose cone's part number? Thanks.

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Vic Skirmants
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Re: 716 Nose Cone

#2 Post by Vic Skirmants » Mon Sep 09, 2019 7:36 am

Looks just like a 644, but has a seal inside.

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Peter Silten
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Re: 716 Nose Cone

#3 Post by Peter Silten » Mon Sep 09, 2019 10:54 am

Thanks Vic. Is it the same nose cone just with the added seal?

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Re: 716 Nose Cone

#4 Post by Jon Bunin » Mon Sep 09, 2019 1:32 pm

The front cover with an oil seal, that was used on 716 transmissions, was introduced in Nov 58 as a 644 part, as of 644 transmission number 22996.
From the outside, it looks the same as the previous 644 front cover, and has the same part number and casting number.
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Peter Silten
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Re: 716 Nose Cone

#5 Post by Peter Silten » Mon Sep 09, 2019 2:04 pm

Thanks Jon.

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Eric Wills
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Re: 716 Nose Cone

#6 Post by Eric Wills » Mon Sep 09, 2019 4:38 pm

Some photos of a 644 nose cone, 716 nose cone and a 644 modified by Mike Robbins. The 716 sealed nose cone was a one year only item, so I thought it would be good to include some pictures in this thread.....I have looked into an external modification using a 924/944 shift selector seal. It seems most 644 shift selectors are too rusty or scratched to make it worthwhile to bother......
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Jon Bunin
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Re: 716 Nose Cone

#7 Post by Jon Bunin » Mon Sep 09, 2019 6:51 pm

The 716 front cover in Eric's photos is from a different casting supplier to Porsche, which is why the number and logo look different than the others.
But the numbers are all the same, 644.20.114.

Here are two that I have on hand, and a photocopy of the factory bulletin announcing the change...
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Vic Skirmants
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Re: 716 Nose Cone

#8 Post by Vic Skirmants » Mon Sep 09, 2019 7:59 pm

One drawback to the seal being inside; the shift finger can get dry and start to bind over time. I had two gearboxes in here last year that had that problem.

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Re: 716 Nose Cone

#9 Post by C J Murray » Mon Sep 09, 2019 8:28 pm

Can the VW outer repair bushing/seal be adapted to the various Porsche cones?
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Re: 716 Nose Cone

#10 Post by Jon Bunin » Mon Sep 09, 2019 8:50 pm

C J Murray wrote:
Mon Sep 09, 2019 8:28 pm
Can the VW outer repair bushing/seal be adapted to the various Porsche cones?
Yes, the earlier 356 covers can be modified to accept one, but the VW seal carriers currently available have quality issues.
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