Does anyone no anything about Porsche engines?

Question

When a timing belt tears up, what does it do to your engine?

Answer 1

Depends on whether it's an interference engine. Some older Porsches have non-interference engines (early 924s), so you probably won't do much damage - you'll just have to have the belt changed if it breaks.

924S, 944, 928 have interference engines. On an interference engine, the valves basically move out of the way of the piston as it moves. If the timing belt breaks, the valves and pistons get out of synch and will collide. This is known in the industry as Ka-Boom.

Edit - Here's a list of which engines are/aren't interference-type: http://www.forparts.com/daycoporsche.htm

Answer 2

Depends on which Porsche you have. The 911's have a chain system, and I doubt you could break it up. The 924's and the 944's use a timing belt. I had it break on a 924 one time and it didn't do any damage at all. I have been told however, that on the 944's that the valve clearance/timing is such that if the belt breaks that you run into danger of a piston hitting the valve, and that means big $'s.

Answer 3

When your timing belt breaks, your car should immediately stop running. Your engine won't be able to operate without the timing belts.