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Daily banter For everything, and anything that doesnt fit in elsewhere |
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#1
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Thanks MJ, your write ups are fascinating and I love seeing how you renew these cars.
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A journey of a thousand+ (epic) miles, begins with a single step, (to the door of an 8). Lau Tzu |
#2
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MJ
Do you get so heavily involved with the D3 S8? Engine replacements etc...... Anyway wonderfully informing posts, I love following these threads.
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'09 D3 S8 - Most of the bells and whistles (B&O, Audi Exclusive brown interior and exterior paint, soft close, ACC etc) de-flapped manifold! |
#3
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Exclusively D2s
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#4
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2002 D2 S8 – Ming Blue, Valcona leather, Vavona wood insert, solar sunroof (to be fitted), Heated rear seats, extended leather pack, 18” Avus, ski hatch, Bose, auto dim rear view mirror, rear blind. |
#5
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Interesting LPG injector adaptors, look very neat but my first thought was that it is likely to affect petrol injectors with a possibility that petrol could end up on adaptor walls and run down instead of properly evaporating and mixing with air. It's just a theory but could be possible that liquid petrol ends up on cylinder walls and wash down oil making high oil consumption on otherwise healthy engine. I guess it's unlikely as petrol should evaporate well due to engine temperature anyway. If it was direct injection petrol or diesel engine I would be more worried but still something to consider.
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Currently 8less 2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D 8 history: 2006 A8 Sport 4.2TDI quattro SOLD, 1997 S8, reached end of life with gearbox failure |
#6
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Hmm that's food for thought. In that scenario, would you expect it to cause permanently high oil consumption, or only when running on petrol? If its doing it temporarily as a consequence of disrupting the injector spray pattern then I would expect it would not burn oil when running on LPG (on the basis that the LPG doesn't wash the bores).
Given that it uses oil regardless of which fuel it's on, but only at low rpm, I wonder if it has been washing the bores when running on petrol and disrupted proper ring seal? That would be bad as it'll do it to the same to the new engine ![]() That said, dodgy rings doesn't really correlate with the old engine being able to hit vmax. Wouldn't it be low on compression in that case and so also be down on power? |
#7
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I don't know, it was just a theory as those LPG adaptors cought my eye. I guess it could be just oil rings that are worn and compression rings still fine.
Oil consumption only on low revs is interesting, isn't it usually the other way round that oil consumption goes up with revs? ![]() ![]()
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Currently 8less 2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D 8 history: 2006 A8 Sport 4.2TDI quattro SOLD, 1997 S8, reached end of life with gearbox failure |
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