Maybe ALL 16V are on the good side - Saab 900 Bulletin Board - Saabnet.com


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Maybe ALL 16V are on the good side
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Posted by mag [Email] (#1906) [Profile/Gallery] (more from mag) on Sun, 12 Jul 2009 15:24:31 Share Post by Email
In Reply to: experience, saab86, Sun, 12 Jul 2009 03:11:03
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These (incomplete list) CIS components changed part numbers from 1985 to 1986:

- Filler neck;
- fuel pump screen;
- fuel pump mounting bellows;
- fuel pump check valve O-Rings;
- filter sealing rings fuel line from filter to rail;
- Fuel injector rail. (This is determined from two online catalogs, not from the parts CD.)

There are not widespread reports of failures of 16V failures running on E6 or E10 (gasohol), other than widespread complaints about fuel level senders and questionable mileage. that leads me to thing that the CIS components in all 16V are generally quite tolerant of minor blends of ethanol.

Maybe the Bosch and Saab engineers were looking ahead to ethanol, or maybe they looked back 40-50 years to a time when ethanol was more readily available than petrol, and simply thought it wasn't hard to tolerate both hydrocarbon and carbohydrate solvents, so just do it. Maybe it's because the European engineers weren't in bed with the oil companies the way the big American motor corps (or corpses) were, and perhaps the US companies deliberately chose ethanol intolerance. Or maybe the materials designers just happened to provide great plastics and seals materials. I somehow doubt dumb luck.

I'm speculating that if the relevant 1985 or 1986 OEM parts were ever ethanol intolerant, those materials have been re-specified by now.

While "absence of loud complaint" is not the same thing as "documented materials sciences proof", it is a useful pragmatic indicator.

Maybe the answer to my original question is "there isn't a watershed year for 16V because they were all ethanol tolerant.


posted by 69.12.207...

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