Is the 3.0 an interference engine?
08-03-2005, 11:37 AM
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Is the 3.0 an interference engine?
Forgive my ignorance but I don't actually own an Audi. A friend crashed her A4 a few weeks ago and the body shop claims that she snapped her timing belt.
He's sending it to the dealer to be repaired but warned her that there may be more damage related to it. So is it an interference engine? I'm afraid she's already being hosed by this shop because the damage didn't appear too bad considering the amount of damage they're claiming was done to the engine. I'm probably just overly skeptical being used to driving an I6 iron block motor but I don't get how an accident that only creased the hood (granted it's a bad crease) can do this much damage to an engine. How would a collision snap a timing belt?
He's sending it to the dealer to be repaired but warned her that there may be more damage related to it. So is it an interference engine? I'm afraid she's already being hosed by this shop because the damage didn't appear too bad considering the amount of damage they're claiming was done to the engine. I'm probably just overly skeptical being used to driving an I6 iron block motor but I don't get how an accident that only creased the hood (granted it's a bad crease) can do this much damage to an engine. How would a collision snap a timing belt?
08-03-2005, 01:01 PM
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yes...if the collision snaps the belt (front end) and it forces the engine to stop then the valves
probably hit the piston head and bent a little. Obviously, if the engine was off when the collision happened or when the belt snapped then there wouldn't have been any damage.
08-03-2005, 08:21 PM
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Interference engines may be efficient, but if...
manufacturers already know the catastrophic effect this has on engine repair/replacement from a simple timing belt failure why can't they just avoid this design?
They can happily pass on the cost of the engine to the consumers. That's why. Not all consumers are aware of the consequences of not replacing a simple cost for a timing belt (relative to what a new engine will cost). Nor are they aware of what could happen if the belt snaps for an interference engine.
How much HP and fuel efficiency can they gain anyway from this design? And If it's that much HP and torque, why not just use a chain rather than rubber belt?
Just out of curiousity.
They can happily pass on the cost of the engine to the consumers. That's why. Not all consumers are aware of the consequences of not replacing a simple cost for a timing belt (relative to what a new engine will cost). Nor are they aware of what could happen if the belt snaps for an interference engine.
How much HP and fuel efficiency can they gain anyway from this design? And If it's that much HP and torque, why not just use a chain rather than rubber belt?
Just out of curiousity.
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