What is the timing setting on a Porsche 911?
One of the most important and basic tasks to perform on your 911 is the setting of the ignition timing. The timing setting is what determines when the spark is going to be fired for each particular spark plug. If the timing is a bit off (retarded or advanced), then your car may not perform at its maximum efficiency and power.
What does 964 CAMs do to a 911?
The effect of the 964 cams is to move the engine’s power curve toward the top end of the RPM range, along with slightly increasing the engine’s power. Where stock CIS engines are out of breath by 5,000 RPMs, with 964 cams they pull strongly straight up to redline.
How to change the camshaft on a Porsche 911?
In order to change the value that the camshaft is currently set at, simply remove the small alignment pin, and rotate the camshaft until the dial gauge reads the specified amount. Then replace the alignment pin, attach the large spring washer, and tighten down the large cam nut, but not to the final torque specification.
What does the series letter mean on a Porsche 911?
The series letter is used by Porsche to indicate the revision for production cars. It often changes annually to reflect changes for the new model year. Not all of the Porsche 911 models produced are mentioned here. The listed models are notable for their role in the advancements in technology and their influence on other vehicles from Porsche.
How to timing camshafts on a Porsche 911 engine?
Please try again later. Cam timing on a Porsche 911 engine is a critical step in any rebuild. This video shows the process using STOMSKI RACING’s SR098 (Cam Timing Fixture) and other tools. Directions provide easy to follow procedures to ensure easy and very precise setting of the camshafts to ensure optimal performance.
When is the best time to change the cam timing?
Obviously, the best time to set the cams is when the motor is being rebuilt. However, the cam timing can be changed and altered with the engine in the car. Quite a few things need to be removed or placed out of the way: engine mounts, A/C compressor, spark plugs, valve covers, some heater hoses, fuel injection components: but it is indeed possible.
What kind of wrench does a Porsche 911 use?
When all the timing is set, and you are convinced that it’s correct, tighten the nut to its final torque using a torque wrench, the 46mm crows foot wrench, and Porsche tool P202. This is a task that cannot be done without the use of these two tools, as the final torque for the cam nut is extremely high (150 Nm for the early 911SCs).
Where is the dial indicator on a Porsche 911?
The dial indicator gauge can be installed using the special Porsche tool holder (sometimes called a Z-block), or if you have a flexible holder, you might get away with clamping it to one of the studs on the cam tower. Make sure that the gauge is parallel to the valve, and not cocked at an angle.