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-   -   73 911 Speedometer questions? (http://forums.pelicanparts.com/porsche-911-technical-forum/1079321-73-911-speedometer-questions.html)

Steve Marshall 11-27-2020 06:35 PM

73 911 Speedometer questions?
 
It appears that my 73 911 has been converted from a cable driven speedometer to an electronic speedometer. What looks like the end of speedometer cable, that has fittings that would connect to the back of a gauge, is laying in the frunk. When I pulled the speedo to get access to the wiper assembly I noticed there was some speaker wire and other none OE looking wires connected.

Does it sound like this has been converted? If so, is there any documentation out there?

Would you at this point return it to cable driven for originality? Or keep it as is? It is working.

manbridge 74 11-27-2020 06:40 PM

Post your transmission serial and type number. It’s likely that a later model transmission has been installed. Porsche switched to a electric speedo sometime in mid 75 I think....

Arne2 11-27-2020 07:03 PM

Converting back to cable driven will likely require a different transmission...

Steve Marshall 11-28-2020 06:48 AM

Quote:

Originally Posted by manbridge 74 (Post 11120208)
Post your transmission serial and type number. It’s likely that a later model transmission has been installed. Porsche switched to a electric speedo sometime in mid 75 I think....


That has to be what happened. There is a wire running to the transmission. The SN is half rubbed off the boss.

Partial serial number.

http://forums.pelicanparts.com/uploa...1606578389.jpg

Wire coming from the transmission.

http://forums.pelicanparts.com/uploa...1606578389.jpg

911 SLANT 11-28-2020 08:14 AM

Thats your speedo sensor on the side of transmission

E Sully 11-29-2020 04:48 AM

Definitely not the original transmission.


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