Quote:
Originally Posted by 928SROCK
Why didn't porsche have enough smarts to use a timing chain? I mean for something as critical as this you would think that they would of. Even American cars back then used timing chains. I'm not to impressed with porsche and there belt design. Its to bad a car that cost that much is that sensitive to a major motor break down even after replacing the belt I hear the tensioner could still screw things up and the belt could still have problems. It makes me not want to drive it knowing it could break and cost the same or more then what you could by a older used 928 for. I herd of people changing theres just because there afraid of it breaking and then they still have problems and the car never runs right again. Does anyone else have the same thoughts?
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When GM was in the planning stages for Saturn, they did a lot of research about timing belts versus timing chains.
Their conclusion was that even though there is more noise (however slight) associated with chains, the reliability was hands down in favor of the chain.
That said, if you look at what's involved with encasing the chain (TB) with a 928 V8, the cost would have been substantial.
As with most car manufacturers, reliability isn't always the most profitable way to go.......
Frankly, I would have preferred a "gear drive".
--Russ