Belgium trouble guy

Is there on your magnificent cite who can help me with.....yes camspecs. I have a 911sc 3.000cc from 10/80 I did the top end rebuild of my engine and I want to put him back in the car but I only need to set the CAMTIMING right but I am not sure of the best measurements for my car is it 1.15mm liftheight from the mark on the fan of cyl 1 doing 1 compleet turn of the fan until it alligns again with the mark, and schoud I do the same for cyl 4, with the same TDC mark. Please help me out of this guy's. Thanks in advance. Rafael

rafi,

There have been three basic different settings in use ove the years by the factory for the 3.0 CIS engine, ranging from 0.9 mm to 1.7 mm. The lowest setting is called the 'retarded cam timing' setting and is most beneficial to so-called 'low-end' or 'bottom-end' torque, such as accelerating from a stop. The highest setting is called the 'advanced cam timing,' and is beneficial to higher rpm torque at cruising or overtaking speed on the higthway.

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Warren Hall
1973 911S Targa

Warren, thanks for the info. On what spec schoud i put mine for daily use of the car, and also run smoothly and powerfull. Warren you and the other guy's helpt me a lot on the rebuild of my engine, I will let you know how the car will run. Thanks

Rafi,

You are quite welcome!

I would suggest the 0.9 mm setting for the best low-end torque. Several 3.0 owners have reported preferring that setting and the resulting torque taking off from rest.



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Warren Hall
1973 911S Targa

Does this means that I will have more power on low rpm. than in High rpm. Can you confirm me also if the procedure for the right bank setting (cyl 4.5.6.) is this with the same TDC mark as for the right bank (cyl 1.2.3.)Thanks guy's