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-   -   Some specs needed (http://forums.pelicanparts.com/911-engine-rebuilding-forum/99227-some-specs-needed.html)

farleyd 02-22-2003 09:16 AM

Some specs needed
 
Hi, i am rebuilding my 2.7 to 2.7RS specs minus the MFI, using Webers.

Id need the specs of the following:

angle for 3-angle valve job
valve seat specs
valve measurements (tolerance) specs

Thanks!

jgparker 02-22-2003 11:04 AM

valve seat angles: 30,45,75
valve seat specs: 1.5+/-0.1mm contact surface, and
47.5mm valve stem end to shim cavity length

valve specs: (head diameter, stem diameter, length)
intake: 46+/-0.1mm, 8.97-0.012mm, 114+/-0.1mm
exhaust: 40+/-0.1mm, 8.95-0.012mm, 113.5+/-0.1mm
I don't have the head margin spec handy.


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