Audi -put the new S8 engine into the next RS4
10-24-2011, 01:41 PM
#21
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It might not be a key priority, but it is relevant. And even ignoring the customers, car manufacturers have the average efficiency of their fleet to worry about. Shareholders and politicians like that kind of ****.
10-24-2011, 02:12 PM
#23
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https://secure-www.audi.com/us/brand...ner=layerModal
We can always contact Audi and see if we get anything. I contacted them about the lack of bluetooth streaming and they were at least nice enough to call back and acknowledge that it was a problem they needed to work on.
We can always contact Audi and see if we get anything. I contacted them about the lack of bluetooth streaming and they were at least nice enough to call back and acknowledge that it was a problem they needed to work on.
10-24-2011, 02:21 PM
#24
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So my Audiworld buddies here argue against an RS4 V10 because of the anticipated cost and fuel economy of the potent beast. No, I won't call anyone here wimpy, but there may be a couple Obama voters in the group! 
Two quick counterpoints:
1. According to that article, the 4.0 TFSI for the S8 generates 520 hp and 479.42 lb-ft of torque, while the R8's V10 generates 525 hp and 491 lb-ft of torque. So how much more expensive could the V10 vs the V8 possibly be?
2. The R8 V10 is, by definition, a low volume model. If you used more of those V10s by putting them in RS models, wouldn't that bring the overall cost of that engine down; perhaps making R8 V10s, themselves, (relatively) more affordable?
Two quick counterpoints:
1. According to that article, the 4.0 TFSI for the S8 generates 520 hp and 479.42 lb-ft of torque, while the R8's V10 generates 525 hp and 491 lb-ft of torque. So how much more expensive could the V10 vs the V8 possibly be?
2. The R8 V10 is, by definition, a low volume model. If you used more of those V10s by putting them in RS models, wouldn't that bring the overall cost of that engine down; perhaps making R8 V10s, themselves, (relatively) more affordable?
Another reason would probably be fuel consumption and taxes.
Another reason would be cost still because the 4.0T is used in the S6 and S8 and other cars possibly in the future. So if you use the R8 V10 in the RS4 then it would drive up the cost of the 4.0T engines in other cars if you don't use it in the RS4 if that is what they are planning on.
Another reason may be size and the balance of the car?
Another reason is why would you use a special V10 engine in a RS4. I would figure if they use that engine it would be in the RS6 but not an RS4.
Last reason and the most important one for us enthusiasts would be why would you want the V10 instead of the 4.0T since it is much more mod friendly.
10-25-2011, 03:14 AM
#25
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If there is a B8 RS 4, just like the RS 5, the B8 RS 4 will have the normally aspirated gasoline DOHC 32V 4.2L FSI V8 (with or without valve-lift) producing 444/450/331 SAE hp/DIN hp/kw @ 8,250 RPM (the red-line) and 317/430 lbs-ft of torque/nm (@ 3,500 RPM, if I am not mistaken), mated exclusively to the Borg Warner DL750 (with a maximum capacity of 553/750 lbs-ft of torque/nm) seven-speed S Tronic direct shift gearbox (DSG) transmission.
10-25-2011, 08:36 AM
#26
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If there is a B8 RS 4, just like the RS 5, the B8 RS 4 will have the normally aspirated gasoline DOHC 32V 4.2L FSI V8 (with or without valve-lift) producing 444/450/331 SAE hp/DIN hp/kw @ 8,250 RPM (the red-line) and 317/430 lbs-ft of torque/nm (@ 3,500 RPM, if I am not mistaken), mated exclusively to the Borg Warner DL750 (with a maximum capacity of 553/750 lbs-ft of torque/nm) seven-speed S Tronic direct shift gearbox (DSG) transmission.
) in order to compete with M3 and especially the C63...I mean our S4s have more torque..... so why would I buy something with that engine
10-26-2011, 03:48 AM
#28
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I read something the other day saying the next gen M3 would probably be a twin turbo six - I about fell out of my chair.
The M3's V8 is a beautiful thing and I'd hate to see it go.. The M3 interior sucks, yes, but I'd love to have that engine in my car.
The M3's V8 is a beautiful thing and I'd hate to see it go.. The M3 interior sucks, yes, but I'd love to have that engine in my car.
10-27-2011, 12:15 PM
#29
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I just don't think it cannot be done. If there is a will there is a way.
Somebody is just hitting the snooze button at GmbH....
take look at this little monster - hats off to Nissan:
http://blog.caranddriver.com/nissan-...ctably-insane/
Somebody is just hitting the snooze button at GmbH....
take look at this little monster - hats off to Nissan:
http://blog.caranddriver.com/nissan-...ctably-insane/
10-27-2011, 02:08 PM
#30
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Sure most anything can be done, but there is a cost to benefit ratio - and a return on investment thing ya know?
Seen the new 2013 M5? Dropped the V10 for a lower RPM V8 - 4.4L TT. Amazing tech in this new engine. 560HP and 502lb/ft out of a 268 cu inch engine, each intake and exhaust valve as well as the injector can be actuated independantly per cylinder, effectively giving a throttle to each cylinder individually. They have the intakes on the outside of the block, and the exhaust coming out the top in the Vee - to allow the turbos to sid in the Vee. Water to air intercooling like we have on the S4, so no large airmass to cool causing turbo lag. They designed a trick criss-cross exhaust manifold to not only maintain constant spin on the turbos - again to eliminate spool lag - but also to reduce backpressure where exhaust is more fully exited on each cylinder per stroke. Water cooled turbos as well now.
They really did this little engine right, peak Tq from 1,500 RPMs, though since it spools so low, it bleeds Tq off after 6K and redlines at 7.2K so you will have to short shift to keep in the power.
Seen the new 2013 M5? Dropped the V10 for a lower RPM V8 - 4.4L TT. Amazing tech in this new engine. 560HP and 502lb/ft out of a 268 cu inch engine, each intake and exhaust valve as well as the injector can be actuated independantly per cylinder, effectively giving a throttle to each cylinder individually. They have the intakes on the outside of the block, and the exhaust coming out the top in the Vee - to allow the turbos to sid in the Vee. Water to air intercooling like we have on the S4, so no large airmass to cool causing turbo lag. They designed a trick criss-cross exhaust manifold to not only maintain constant spin on the turbos - again to eliminate spool lag - but also to reduce backpressure where exhaust is more fully exited on each cylinder per stroke. Water cooled turbos as well now.
They really did this little engine right, peak Tq from 1,500 RPMs, though since it spools so low, it bleeds Tq off after 6K and redlines at 7.2K so you will have to short shift to keep in the power.