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Re: Comparable O2 sensors?
Posted by Dean (more from Dean) on Tue, 14 Jan 2003 16:53:50
In Reply to: Re: Comparable O2 sensors?, BrooksG, Tue, 14 Jan 2003 15:47:15
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I don't think that steel is ever used, and iron is the standard. With wet or dry liners, the iron can be centrifically cast and alloyed to an extent that would be uneconomic for a complete iron block. These sleeves are then finer grained as well I expect.
Cast iron is an alloy, relatively high in carbon. Steel has much less carbon. So steel is closer to pure iron than cast iron.
For a given cast iron chemistry, the properties can vary greatly. The melt can be 'inoculated' with chemicals that produce nodular or ductile iron, which has different properties than common or grey iron.
Last I heard of running pistons in aluminum bores, it was the GM ?Vega? engine. A complete and total disaster!. High silicon alloy, machined and honed, then acid etched to leave the silicon above the matrix of aliminum. They all failed. I can't believe that anyone would attempt this again.
I had a 78 Volvo 264 with the aluminum V6, with wet liners. Worked great for me. Was called the PRV engine, a joint project with Peugot, Renault and Volvo. The engine was rumoured to be a 'leaker' but is stayed dry for me. It had twin throttle plates that had to be synchronized. The dealers did this by sampling ports in the two exhaust down pipes and an exhaust gas analyser. I showed them how to put a clear tube with some water over the two PVC orifices and balance the water level. They loved that one! And if it was ever off, just clean the throttles and it went back to balance every time.
posted by 208.24.179...
Posts in this Thread:
- O2 sensor, dip, Mon, 13 Jan 2003 12:47:06
- thanks for information, dip, Tue, 14 Jan 2003 23:45:12
- Re: O2 sensor, Dean, Mon, 13 Jan 2003 14:19:16
- TheSaabsite has them for $140 (US), Sniggle, Mon, 13 Jan 2003 14:04:13
- Re: O2 sensor, dtech, Mon, 13 Jan 2003 13:14:00
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