Do timing chains need to be changed?
The timing chain normally needs to be replaced between 80,000 and 120,000 miles unless there is a specific problem. If driving an older vehicle, or one with close to 100,000 miles, it is recommended to look for symptoms of the timing chain going bad or failing.
Do Audis have timing belts or chains?
Audi and Volkswagen originally made use of timing chains and moved to an external timing belt through the 80s, 90s and most of the 2000s (now returning to chain drive systems). On average, timing belts should be replaced every 80,000 miles or every 5 years.
How do you change the cam timing on a Porsche 911?
Start with the left side of the motor, and use vise-grips to clamp the end of the wheel sprocket lever arm to the edge of the chain housing. This is done to increase the tension on the chain and to get a more accurate reading. On the right side, it is a bit more difficult.
What are the chains on a Porsche 911?
The design of the 911 engine incorporates a dual-cam system that is driven by timing chains connected to the main crankshaft. One of the weak points of the early 911 motors (thru 1983) is the mechanical spring-loaded tensioners that maintain the tightness and accuracy of the chains.
How do you replace a Porsche timing chain tensioner?
Use a 27mm socket and ratchet to break loose the tensioner. Note that the tensioner has lots of threads; therefore, it will take a lot of turning to remove it. Replace one tensioner at a time. Prime the new tensioner. Soak the new tensioner in engine oil; while it is soaked in oil, pump it a few times to prime it.
Do you have to change timing chain in front wheel drive car?
No such luck if you have a modern front-wheel drive car with a transversely-mounted engine, as the space in the engine compartment could be very tight. To avoid timing chain problems you should maintain your engine properly and have the engine oil changed at recommended intervals. Using premium quality engine oils and oil filters will also help.