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-   -   CIS Heads?? (http://forums.pelicanparts.com/911-engine-rebuilding-forum/242950-cis-heads.html)

James Renfroe 09-26-2005 04:44 AM
CIS Heads??
 
Needs help to ID these heads on Ebay:

http://cgi.ebay.com/ebaymotors/Porsche-911-T-2-4L-Heads-1973-5-CIS-NR-914_W0QQitemZ8001969883QQcategoryZ33617QQrdZ1QQcmd ZViewItem

These are listed as 73 and a half cis heads. These look like MFI heads to me, can anyone confirm or deny?

Thx!

jluetjen 09-26-2005 05:44 AM
The link doesn't seem to work at the eBay end.

Ian Donkin 09-26-2005 06:20 AM
On the 73.5 2.4T's, the injectors plug directly to the heads like the MFI cars (or at least they do on mine).

I believe this changed for the 2.7 CIS models where they moved the injectors to the inlet manifold.

From studying Bruce Andersons book, I'm sure the 73.5 CIS heads also have a unique (smaller) inlet and exhaust port diameter.


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