Which heads, etc., with the aluminium 3.0L block? 2.4L, 2.8L, 2.7L or RS4 ???
10-17-2006, 04:47 PM
#251
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I believe the journals are identical in the 2.7L, 2.8L and 3.0L
The journals in the RS4 are slightly larger. The fact that they beefed up the crank for just that one specific application tells you something..
Stephen
Stephen
10-17-2006, 05:06 PM
#256
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Where did you get your figure for the stroke of the 3.0L ???
It's wrong. It should be 92.8 mm/3.65 in.
154 / 92.8 = 1.66 ratio.
That makes more sense.
Bore is supposed to be 82.5 mm.
Stephen<ul><li><a href="https://www.audiworld.com/model/a4/05/05A4Sedan_TechSpecs.pdf">https://www.audiworld.com/model/a4/05/05A4Sedan_TechSpecs.pdf</a</li></ul>
154 / 92.8 = 1.66 ratio.
That makes more sense.
Bore is supposed to be 82.5 mm.
Stephen<ul><li><a href="https://www.audiworld.com/model/a4/05/05A4Sedan_TechSpecs.pdf">https://www.audiworld.com/model/a4/05/05A4Sedan_TechSpecs.pdf</a</li></ul>
10-17-2006, 05:08 PM
#258
I just dont think 8000rpm is really pushing things that hard provided quality components are used
high end conrods, stiff valvesprings, high end fasteners and balanced rotating assembly should keep things together just fine.
plenty of japanese make turbo cars pushing 9k and higher. i believe tony@epl turns 8100 on his 1.8T with valvesprings only as well.
plenty of japanese make turbo cars pushing 9k and higher. i believe tony@epl turns 8100 on his 1.8T with valvesprings only as well.
10-17-2006, 05:15 PM
#260
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What is the mean piston speed at 8000 RPM?
(92.8 / 1000) * 2 * (8000 / 60) = 24.8 m/s
(or 4870 ft/min)
That's really pushing it!
No doubt you can do it but how often will you need to rebuild? It is also hell on the piston rings.
Stephen
(or 4870 ft/min)
That's really pushing it!
No doubt you can do it but how often will you need to rebuild? It is also hell on the piston rings.
Stephen
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