|
Registered
Join Date: Jun 2004
Location: Rio Rancho, New Mexico
Posts: 1,325
|
Mike,
It looks like your cams are running about 3 degrees retarded from the Porsche spec. Jerry Woods spec of 1.0mm is spot on to open the intake valve at 0 degrees TDC, crossover. This would be with zero valve lash, not the 0.10mm you set the valve lash once the motor is all together.
Timing chain stretch plus normal tolerances account for the 0.65mm you are reading.
Good catch and question,
__________________
DOUG
'76 911S 2.7, webers, solex cams, JE pistons, '74 exhaust, 23 & 28 torsion bars, 930 calipers & rotors, Hoosiers on 8's & 9's.
'85 911 Carrera, stock, just painted, Orient Red
|