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From another forum:
"There is no reliable source who has explained reasons for T7 piston failures. Or maybe I've missed something? T7 engine has different design philosophy compared to T5 engine ( lighter internals, lower friction, better materials for example in nimonic exhaust valves etc. ) as a whole. For example piston rings locations are different ( T5 vs. T7 ) because of the emission regulations. One has to remember as well that T5 pistons are heavier than T7 pistons."
There a was a green push in the 1990's plus GM only had 50% stake in Saab until 2000. Hardly controlling interest to dictate what pistons go in a car.
Besides there was not a single manufacturer through mid-2000's that didn't try to cut corners. Look at the number late 2000 cars Toyota has recalled, almost everyone of them has been recalled for something. Many recalled for multiple things.
Your hersay of the anti-GM drum beaters doesn't hold wait.
posted by 74.82.64...
Posts in this Thread:
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- LOUD knocking..., patrick in ABQ, Tue, 14 Aug 2012 13:47:42
- Saab Parts of North America at SOC 12, Stephen Goldberger, Wed, 15 Aug 2012 04:48:17
- my 2001 Aero did the same thing, saabsince 93b , Tue, 14 Aug 2012 18:25:04
- Re: LOUD knocking..., dtechakacheaptech, Tue, 14 Aug 2012 15:41:24
- Re: LOUD knocking..., SWEDECAR , Tue, 14 Aug 2012 15:05:49
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