We're in the process of fine tuning our Carrera 2.7 engine after some work we've done during the winter but we're a little puzzled: apparently there is some mismatch between the indications of the tech specs booklet and those of the workshop manual: according to our reading, in the former (booklet), the ignition timing at idle should be at 5deg atdc, whereas in the latter (w/s manual) is shall be at the tdc (i.e. at Z1). Are we missing something? Last time we did it maybe it was 12 years ago ... can't recall exactly how we did it ...

Thanks for you help

Name:  i4^cimgpsh_orig.jpg
Views: 700
Size:  95.8 KB

Name:  911S_1.jpg
Views: 585
Size:  82.8 KB