Daewoo timing belt

Old 07-28-07, 10:32 PM
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Unhappy Daewoo timing belt

The timing belt broke in our 2001 Daewoo Nubira. The mechanic says we need a whole new engine. Is this true? How can we prevent this from happening in the future?

We have a 1988 Subaru and the timing belt has broke twice, all we had to do was replace the timing belt.
Old 07-29-07, 04:42 AM
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Most asian engines are whats called "interference" engines.......meaning that valves and pistons COULD try to occupy the same space at the top of the combustion chamber if the timing belt were to break..........
If the belt broke while the engine ws running, and the piston/pistons made contact with the valve/valves............you would, as a bare minimum, need to R&R the cyl head and have it overhauled............with a possibility that one or more of those bent valves may have poked holes in the pistons which would lead to an engine replacement
Unfortunately, either way, you have a lot of work in front of you
Old 07-29-07, 08:16 AM
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I'd never buy a car with an engine like this. And buyers should be told that their car engine has that, before they buy the new car! I look at this as poor engineering, and manufacturer shoud be held accountable. I don't know how they were even allowed to make such engines. Once the warrantee runs out, you are going to be SOL. But even if they tell you to replace the belt every X miles. Still a bad system if you ask me.

Do interference engines give better gas mileage than non-interference engines? And if that is not it, then why do they design them that way?
Old 07-29-07, 08:21 AM
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It comes down to money. This motor was probably the cheapest they could put in to keep the price tag low.
Old 07-29-07, 08:44 AM
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I wouldn't say "most" Asian engines, but many are and a fair number of domestic ones as well are "valve benders". Theoretically there is some perfomance/economy gain in the design, but I'm with ecman; I would never own one.

Here's a good link to what's what:


You didn't mention how many miles, but from the charts it looks as though 72,000 miles would have been a good time to do it. If you have your vehicles serviced regularly at a reputable facility, someone should have noticed and mentioned it.
Old 07-29-07, 03:37 PM
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bottom line

Here is the bottom line if the maintenance schedule says replace timing belt at a specified mileage you had better have it complied with or suffer the result of a totaled engine.

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